diff --git a/Scylla/ApiReader.cpp b/Scylla/ApiReader.cpp index 4a4dd0a..97a4974 100644 --- a/Scylla/ApiReader.cpp +++ b/Scylla/ApiReader.cpp @@ -1,1225 +1,1225 @@ #include "ApiReader.h" #include "Scylla.h" #include "Architecture.h" #include "SystemInformation.h" #include "StringConversion.h" #include "PeParser.h" stdext::hash_multimap ApiReader::apiList; //api look up table std::map * ApiReader::moduleThunkList; //store found apis DWORD_PTR ApiReader::minApiAddress = 0xFFFFFFFF; DWORD_PTR ApiReader::maxApiAddress = 0; //#define DEBUG_COMMENTS void ApiReader::readApisFromModuleList() { if (Scylla::config[APIS_ALWAYS_FROM_DISK].isTrue()) { readExportTableAlwaysFromDisk = true; } else { readExportTableAlwaysFromDisk = false; } for (unsigned int i = 0; i < moduleList.size();i++) { setModulePriority(&moduleList[i]); if (moduleList[i].modBaseAddr + moduleList[i].modBaseSize > maxValidAddress) { maxValidAddress = moduleList[i].modBaseAddr + moduleList[i].modBaseSize; } Scylla::windowLog.log(L"Module parsing: %s",moduleList[i].fullPath); if (!moduleList[i].isAlreadyParsed) { parseModule(&moduleList[i]); } } #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"Address Min " PRINTF_DWORD_PTR_FULL L" Max " PRINTF_DWORD_PTR_FULL L"\nimagebase " PRINTF_DWORD_PTR_FULL L" maxValidAddress " PRINTF_DWORD_PTR_FULL, minApiAddress, maxApiAddress, targetImageBase ,maxValidAddress); #endif } void ApiReader::parseModule(ModuleInfo *module) { module->parsing = true; if (isWinSxSModule(module)) { parseModuleWithMapping(module); } else if (isModuleLoadedInOwnProcess(module)) //this is always ok { parseModuleWithOwnProcess(module); } else { if (readExportTableAlwaysFromDisk) { parseModuleWithMapping(module); } else { parseModuleWithProcess(module); } } module->isAlreadyParsed = true; } void ApiReader::parseModuleWithMapping(ModuleInfo *moduleInfo) { LPVOID fileMapping = 0; PIMAGE_NT_HEADERS pNtHeader = 0; PIMAGE_DOS_HEADER pDosHeader = 0; fileMapping = createFileMappingViewRead(moduleInfo->fullPath); if (fileMapping == 0) return; pDosHeader = (PIMAGE_DOS_HEADER)fileMapping; pNtHeader = (PIMAGE_NT_HEADERS)((DWORD_PTR)fileMapping + (DWORD_PTR)(pDosHeader->e_lfanew)); if (isPeAndExportTableValid(pNtHeader)) { parseExportTable(moduleInfo, pNtHeader, (PIMAGE_EXPORT_DIRECTORY)((DWORD_PTR)fileMapping + pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress), (DWORD_PTR)fileMapping); } UnmapViewOfFile(fileMapping); } inline bool ApiReader::isApiForwarded(DWORD_PTR rva, PIMAGE_NT_HEADERS pNtHeader) { if ((rva > pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress) && (rva < (pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress + pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size))) { return true; } else { return false; } } void ApiReader::handleForwardedApi(DWORD_PTR vaStringPointer,char * functionNameParent, DWORD_PTR rvaParent, WORD ordinalParent, ModuleInfo *moduleParent) { size_t dllNameLength = 0; WORD ordinal = 0; ModuleInfo *module = 0; DWORD_PTR vaApi = 0; DWORD_PTR rvaApi = 0; char dllName[100] = {0}; WCHAR dllNameW[100] = {0}; char *fordwardedString = (char *)vaStringPointer; char *searchFunctionName = strchr(fordwardedString, '.'); if (!searchFunctionName) return; dllNameLength = searchFunctionName - fordwardedString; if (dllNameLength >= 99) { return; } else { strncpy_s(dllName, fordwardedString, dllNameLength); } searchFunctionName++; //Windows 7 if (!strncmp(dllName,"api-ms-win-", 11)) { /* Info: http://www.nirsoft.net/articles/windows_7_kernel_architecture_changes.html */ FARPROC addy = GetProcAddress(GetModuleHandleA(dllName), searchFunctionName); if (addy != 0) { addApi(functionNameParent,0, ordinalParent, (DWORD_PTR)addy, (DWORD_PTR)addy - (DWORD_PTR)GetModuleHandleA(dllName), true, moduleParent); } return; } strcat_s(dllName, ".dll"); StringConversion::ToUTF16(dllName, dllNameW, _countof(dllNameW)); if (!_wcsicmp(dllNameW, moduleParent->getFilename())) { module = moduleParent; } else { module = findModuleByName(dllNameW); } if (module != 0) // module == 0 -> can be ignored { /*if ((module->isAlreadyParsed == false) && (module != moduleParent)) { //do API extract if (module->parsing == true) { //some stupid circle dependency printf("stupid circle dependency %s\n",module->getFilename()); } else { parseModule(module); } }*/ if (strchr(searchFunctionName,'#')) { //forwarding by ordinal searchFunctionName++; ordinal = (WORD)atoi(searchFunctionName); findApiByModuleAndOrdinal(module, ordinal, &vaApi, &rvaApi); } else { findApiByModuleAndName(module, searchFunctionName, &vaApi, &rvaApi); } if (rvaApi == 0) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"handleForwardedApi :: Api not found, this is really BAD! %S",fordwardedString); #endif } else { addApi(functionNameParent,0, ordinalParent, vaApi, rvaApi, true, moduleParent); } } } ModuleInfo * ApiReader::findModuleByName(WCHAR *name) { for (unsigned int i = 0; i < moduleList.size(); i++) { if (!_wcsicmp(moduleList[i].getFilename(), name)) { return &moduleList[i]; } } return 0; } void ApiReader::addApiWithoutName(WORD ordinal, DWORD_PTR va, DWORD_PTR rva,bool isForwarded, ModuleInfo *moduleInfo) { addApi(0, 0, ordinal, va, rva, isForwarded, moduleInfo); } void ApiReader::addApi(char *functionName, WORD hint, WORD ordinal, DWORD_PTR va, DWORD_PTR rva, bool isForwarded, ModuleInfo *moduleInfo) { ApiInfo *apiInfo = new ApiInfo(); if ((functionName != 0) && (strlen(functionName) < _countof(apiInfo->name))) { strcpy_s(apiInfo->name, functionName); } else { apiInfo->name[0] = 0x00; } apiInfo->ordinal = ordinal; apiInfo->isForwarded = isForwarded; apiInfo->module = moduleInfo; apiInfo->rva = rva; apiInfo->va = va; apiInfo->hint = hint; setMinMaxApiAddress(va); moduleInfo->apiList.push_back(apiInfo); apiList.insert(API_Pair(va, apiInfo)); } BYTE * ApiReader::getHeaderFromProcess(ModuleInfo * module) { BYTE *bufferHeader = 0; DWORD readSize = 0; if (module->modBaseSize < PE_HEADER_BYTES_COUNT) { readSize = module->modBaseSize; } else { readSize = PE_HEADER_BYTES_COUNT; } bufferHeader = new BYTE[readSize]; if(!readMemoryFromProcess(module->modBaseAddr, readSize, bufferHeader)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getHeaderFromProcess :: Error reading header"); #endif delete[] bufferHeader; return 0; } else { return bufferHeader; } } BYTE * ApiReader::getExportTableFromProcess(ModuleInfo * module, PIMAGE_NT_HEADERS pNtHeader) { DWORD readSize = 0; BYTE *bufferExportTable = 0; readSize = pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size; if (readSize < (sizeof(IMAGE_EXPORT_DIRECTORY) + 8)) { //Something is wrong with the PE Header #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"Something is wrong with the PE Header here Export table size %d", readSize); #endif readSize = sizeof(IMAGE_EXPORT_DIRECTORY) + 100; } if (readSize) { bufferExportTable = new BYTE[readSize]; if (!bufferExportTable) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"Something is wrong with the PE Header here Export table size %d", readSize); #endif return 0; } if(!readMemoryFromProcess(module->modBaseAddr + pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress, readSize, bufferExportTable)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getExportTableFromProcess :: Error reading export table from process"); #endif delete[] bufferExportTable; return 0; } else { return bufferExportTable; } } else { return 0; } } void ApiReader::parseModuleWithProcess(ModuleInfo * module) { PIMAGE_NT_HEADERS pNtHeader = 0; PIMAGE_DOS_HEADER pDosHeader = 0; BYTE *bufferHeader = 0; BYTE *bufferExportTable = 0; PeParser peParser(module->modBaseAddr, false); if (!peParser.isValidPeFile()) return; pNtHeader = peParser.getCurrentNtHeader(); if (peParser.hasExportDirectory()) { bufferExportTable = getExportTableFromProcess(module, pNtHeader); if(bufferExportTable) { parseExportTable(module,pNtHeader,(PIMAGE_EXPORT_DIRECTORY)bufferExportTable, (DWORD_PTR)bufferExportTable - pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress); delete[] bufferExportTable; } } } void ApiReader::parseExportTable(ModuleInfo *module, PIMAGE_NT_HEADERS pNtHeader, PIMAGE_EXPORT_DIRECTORY pExportDir, DWORD_PTR deltaAddress) { DWORD *addressOfFunctionsArray = 0,*addressOfNamesArray = 0; WORD *addressOfNameOrdinalsArray = 0; char *functionName = 0; DWORD_PTR RVA = 0, VA = 0; WORD ordinal = 0; WORD i = 0, j = 0; bool withoutName; addressOfFunctionsArray = (DWORD *)((DWORD_PTR)pExportDir->AddressOfFunctions + deltaAddress); addressOfNamesArray = (DWORD *)((DWORD_PTR)pExportDir->AddressOfNames + deltaAddress); addressOfNameOrdinalsArray = (WORD *)((DWORD_PTR)pExportDir->AddressOfNameOrdinals + deltaAddress); #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"parseExportTable :: module %s NumberOfNames %X", module->fullPath, pExportDir->NumberOfNames); #endif for (i = 0; i < pExportDir->NumberOfNames; i++) { functionName = (char*)(addressOfNamesArray[i] + deltaAddress); ordinal = (WORD)(addressOfNameOrdinalsArray[i] + pExportDir->Base); RVA = addressOfFunctionsArray[addressOfNameOrdinalsArray[i]]; VA = addressOfFunctionsArray[addressOfNameOrdinalsArray[i]] + module->modBaseAddr; #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"parseExportTable :: api %S ordinal %d imagebase " PRINTF_DWORD_PTR_FULL L" RVA " PRINTF_DWORD_PTR_FULL L" VA " PRINTF_DWORD_PTR_FULL, functionName, ordinal, module->modBaseAddr, RVA, VA); #endif if (!isApiBlacklisted(functionName)) { if (!isApiForwarded(RVA,pNtHeader)) { addApi(functionName, i, ordinal,VA,RVA,false,module); } else { //printf("Forwarded: %s\n",functionName); handleForwardedApi(RVA + deltaAddress,functionName,RVA,ordinal,module); } } } /*Exports without name*/ if (pExportDir->NumberOfNames != pExportDir->NumberOfFunctions) { for (i = 0; i < pExportDir->NumberOfFunctions; i++) { withoutName = true; for (j = 0; j < pExportDir->NumberOfNames; j++) { if(addressOfNameOrdinalsArray[j] == i) { withoutName = false; break; } } if (withoutName && addressOfFunctionsArray[i] != 0) { ordinal = (WORD)(i+pExportDir->Base); RVA = addressOfFunctionsArray[i]; VA = (addressOfFunctionsArray[i] + module->modBaseAddr); if (!isApiForwarded(RVA,pNtHeader)) { addApiWithoutName(ordinal,VA,RVA,false,module); } else { handleForwardedApi(RVA + deltaAddress,0,RVA,ordinal,module); } } } } } void ApiReader::findApiByModuleAndOrdinal(ModuleInfo * module, WORD ordinal, DWORD_PTR * vaApi, DWORD_PTR * rvaApi) { findApiByModule(module,0,ordinal,vaApi,rvaApi); } void ApiReader::findApiByModuleAndName(ModuleInfo * module, char * searchFunctionName, DWORD_PTR * vaApi, DWORD_PTR * rvaApi) { findApiByModule(module,searchFunctionName,0,vaApi,rvaApi); } void ApiReader::findApiByModule(ModuleInfo * module, char * searchFunctionName, WORD ordinal, DWORD_PTR * vaApi, DWORD_PTR * rvaApi) { if (isModuleLoadedInOwnProcess(module)) { HMODULE hModule = GetModuleHandle(module->getFilename()); if (hModule) { if (vaApi) { if (ordinal) { *vaApi = (DWORD_PTR)GetProcAddress(hModule, (LPCSTR)ordinal); } else { *vaApi = (DWORD_PTR)GetProcAddress(hModule, searchFunctionName); } *rvaApi = (*vaApi) - (DWORD_PTR)hModule; *vaApi = (*rvaApi) + module->modBaseAddr; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"findApiByModule :: vaApi == NULL, should never happen %S", searchFunctionName); #endif } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"findApiByModule :: hModule == NULL, should never happen %s", module->getFilename()); #endif } } else { //search api in extern process findApiInProcess(module,searchFunctionName,ordinal,vaApi,rvaApi); } } bool ApiReader::isModuleLoadedInOwnProcess(ModuleInfo * module) { for (unsigned int i = 0; i < ownModuleList.size(); i++) { if (!_wcsicmp(module->fullPath, ownModuleList[i].fullPath)) { //printf("isModuleLoadedInOwnProcess :: %s %s\n",module->fullPath,ownModuleList[i].fullPath); return true; } } return false; } void ApiReader::parseModuleWithOwnProcess( ModuleInfo * module ) { PIMAGE_NT_HEADERS pNtHeader = 0; PIMAGE_DOS_HEADER pDosHeader = 0; HMODULE hModule = GetModuleHandle(module->getFilename()); if (hModule) { pDosHeader = (PIMAGE_DOS_HEADER)hModule; pNtHeader = (PIMAGE_NT_HEADERS)((DWORD_PTR)hModule + (DWORD_PTR)(pDosHeader->e_lfanew)); if (isPeAndExportTableValid(pNtHeader)) { parseExportTable(module, pNtHeader, (PIMAGE_EXPORT_DIRECTORY)((DWORD_PTR)hModule + pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress), (DWORD_PTR)hModule); } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"parseModuleWithOwnProcess :: hModule is NULL"); #endif } } bool ApiReader::isPeAndExportTableValid(PIMAGE_NT_HEADERS pNtHeader) { if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) { Scylla::windowLog.log(L"-> IMAGE_NT_SIGNATURE doesn't match."); return false; } else if ((pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress == 0) || (pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size == 0)) { Scylla::windowLog.log(L"-> No export table."); return false; } else { return true; } } void ApiReader::findApiInProcess(ModuleInfo * module, char * searchFunctionName, WORD ordinal, DWORD_PTR * vaApi, DWORD_PTR * rvaApi) { PIMAGE_NT_HEADERS pNtHeader = 0; PIMAGE_DOS_HEADER pDosHeader = 0; BYTE *bufferHeader = 0; BYTE *bufferExportTable = 0; bufferHeader = getHeaderFromProcess(module); if (bufferHeader == 0) return; pDosHeader = (PIMAGE_DOS_HEADER)bufferHeader; pNtHeader = (PIMAGE_NT_HEADERS)((DWORD_PTR)bufferHeader + (DWORD_PTR)(pDosHeader->e_lfanew)); if (isPeAndExportTableValid(pNtHeader)) { bufferExportTable = getExportTableFromProcess(module, pNtHeader); if(bufferExportTable) { findApiInExportTable(module,(PIMAGE_EXPORT_DIRECTORY)bufferExportTable, (DWORD_PTR)bufferExportTable - pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress,searchFunctionName,ordinal,vaApi,rvaApi); delete[] bufferExportTable; } } delete[] bufferHeader; } bool ApiReader::findApiInExportTable(ModuleInfo *module, PIMAGE_EXPORT_DIRECTORY pExportDir, DWORD_PTR deltaAddress, char * searchFunctionName, WORD ordinal, DWORD_PTR * vaApi, DWORD_PTR * rvaApi) { DWORD *addressOfFunctionsArray = 0,*addressOfNamesArray = 0; WORD *addressOfNameOrdinalsArray = 0; char *functionName = 0; DWORD i = 0, j = 0; addressOfFunctionsArray = (DWORD *)((DWORD_PTR)pExportDir->AddressOfFunctions + deltaAddress); addressOfNamesArray = (DWORD *)((DWORD_PTR)pExportDir->AddressOfNames + deltaAddress); addressOfNameOrdinalsArray = (WORD *)((DWORD_PTR)pExportDir->AddressOfNameOrdinals + deltaAddress); if (searchFunctionName) { for (i = 0; i < pExportDir->NumberOfNames; i++) { functionName = (char*)(addressOfNamesArray[i] + deltaAddress); if (!strcmp(functionName,searchFunctionName)) { *rvaApi = addressOfFunctionsArray[addressOfNameOrdinalsArray[i]]; *vaApi = addressOfFunctionsArray[addressOfNameOrdinalsArray[i]] + module->modBaseAddr; return true; } } } else { for (i = 0; i < pExportDir->NumberOfFunctions; i++) { if (ordinal == (i+pExportDir->Base)) { *rvaApi = addressOfFunctionsArray[i]; *vaApi = (addressOfFunctionsArray[i] + module->modBaseAddr); return true; } } } return false; } void ApiReader::setModulePriority(ModuleInfo * module) { const WCHAR *moduleFileName = module->getFilename(); //imports by kernelbase don't exist if (!_wcsicmp(moduleFileName, L"kernelbase.dll")) { module->priority = -1; } else if (!_wcsicmp(moduleFileName, L"ntdll.dll")) { module->priority = 0; } else if (!_wcsicmp(moduleFileName, L"shlwapi.dll")) { module->priority = 0; } else if (!_wcsicmp(moduleFileName, L"ShimEng.dll")) { module->priority = 0; } else if (!_wcsicmp(moduleFileName, L"kernel32.dll")) { module->priority = 2; } else if (!_wcsnicmp(moduleFileName, L"api-ms-win-", 11)) { module->priority = 0; } else { module->priority = 1; } } bool ApiReader::isApiAddressValid(DWORD_PTR virtualAddress) { return apiList.count(virtualAddress) > 0; } ApiInfo * ApiReader::getApiByVirtualAddress(DWORD_PTR virtualAddress, bool * isSuspect) { stdext::hash_multimap::iterator it1, it2; size_t c = 0; size_t countDuplicates = apiList.count(virtualAddress); int countHighPriority = 0; ApiInfo *apiFound = 0; if (countDuplicates == 0) { return 0; } else if (countDuplicates == 1) { //API is 100% correct *isSuspect = false; it1 = apiList.find(virtualAddress); // Find first match. return (ApiInfo *)((*it1).second); } else { it1 = apiList.find(virtualAddress); // Find first match. //any high priority with a name apiFound = getScoredApi(it1,countDuplicates,true,false,false,true,false,false,false,false); if (apiFound) return apiFound; *isSuspect = true; //high priority with a name and ansi/unicode name apiFound = getScoredApi(it1,countDuplicates,true,true,false,true,false,false,false,false); if (apiFound) return apiFound; //priority 2 with no underline in name apiFound = getScoredApi(it1,countDuplicates,true,false,true,false,false,false,true,false); if (apiFound) return apiFound; //priority 1 with a name apiFound = getScoredApi(it1,countDuplicates,true,false,false,false,false,true,false,false); if (apiFound) return apiFound; //With a name apiFound = getScoredApi(it1,countDuplicates,true,false,false,false,false,false,false,false); if (apiFound) return apiFound; //any with priority, name, ansi/unicode apiFound = getScoredApi(it1,countDuplicates,true,true,false,true,false,false,false,true); if (apiFound) return apiFound; //any with priority apiFound = getScoredApi(it1,countDuplicates,false,false,false,true,false,false,false,true); if (apiFound) return apiFound; //has prio 0 and name apiFound = getScoredApi(it1,countDuplicates,false,false,false,false,true,false,false,true); if (apiFound) return apiFound; } //is never reached Scylla::windowLog.log(L"getApiByVirtualAddress :: There is a api resolving bug, VA: " PRINTF_DWORD_PTR_FULL, virtualAddress); for (size_t c = 0; c < countDuplicates; c++, it1++) { apiFound = (ApiInfo *)((*it1).second); Scylla::windowLog.log(L"-> Possible API: %S ord: %d ", apiFound->name, apiFound->ordinal); } return (ApiInfo *) 1; } ApiInfo * ApiReader::getScoredApi(stdext::hash_multimap::iterator it1,size_t countDuplicates, bool hasName, bool hasUnicodeAnsiName, bool hasNoUnderlineInName, bool hasPrioDll,bool hasPrio0Dll,bool hasPrio1Dll, bool hasPrio2Dll, bool firstWin ) { ApiInfo * foundApi = 0; ApiInfo * foundMatchingApi = 0; int countFoundApis = 0; int scoreNeeded = 0; int scoreValue = 0; size_t apiNameLength = 0; if (hasUnicodeAnsiName || hasNoUnderlineInName) { hasName = true; } if (hasName) scoreNeeded++; if (hasUnicodeAnsiName) scoreNeeded++; if (hasNoUnderlineInName) scoreNeeded++; if (hasPrioDll) scoreNeeded++; if (hasPrio0Dll) scoreNeeded++; if (hasPrio1Dll) scoreNeeded++; if (hasPrio2Dll) scoreNeeded++; for (size_t c = 0; c < countDuplicates; c++, it1++) { foundApi = (ApiInfo *)((*it1).second); scoreValue = 0; if (hasName) { if (foundApi->name[0] != 0x00) { scoreValue++; if (hasUnicodeAnsiName) { apiNameLength = strlen(foundApi->name); if ((foundApi->name[apiNameLength - 1] == 'W') || (foundApi->name[apiNameLength - 1] == 'A')) { scoreValue++; } } if (hasNoUnderlineInName) { if (!strrchr(foundApi->name, '_')) { scoreValue++; } } } } if (hasPrioDll) { if (foundApi->module->priority >= 1) { scoreValue++; } } if (hasPrio0Dll) { if (foundApi->module->priority == 0) { scoreValue++; } } if (hasPrio1Dll) { if (foundApi->module->priority == 1) { scoreValue++; } } if (hasPrio2Dll) { if (foundApi->module->priority == 2) { scoreValue++; } } if (scoreValue == scoreNeeded) { foundMatchingApi = foundApi; countFoundApis++; if (firstWin) { return foundMatchingApi; } } } if (countFoundApis == 1) { return foundMatchingApi; } else { return (ApiInfo *)0; } } void ApiReader::setMinMaxApiAddress(DWORD_PTR virtualAddress) { if (virtualAddress < minApiAddress) { minApiAddress = virtualAddress - 1; } if (virtualAddress > maxApiAddress) { maxApiAddress = virtualAddress + 1; } } void ApiReader::readAndParseIAT(DWORD_PTR addressIAT, DWORD sizeIAT, std::map &moduleListNew) { moduleThunkList = &moduleListNew; BYTE *dataIat = new BYTE[sizeIAT]; if (readMemoryFromProcess(addressIAT,sizeIAT,dataIat)) { parseIAT(addressIAT,dataIat,sizeIAT); } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"ApiReader::readAndParseIAT :: error reading iat " PRINTF_DWORD_PTR_FULL, addressIAT); #endif } delete[] dataIat; } void ApiReader::parseIAT(DWORD_PTR addressIAT, BYTE * iatBuffer, SIZE_T size) { ApiInfo *apiFound = 0; ModuleInfo *module = 0; bool isSuspect = false; int countApiFound = 0, countApiNotFound = 0; DWORD_PTR * pIATAddress = (DWORD_PTR *)iatBuffer; SIZE_T sizeIAT = size / sizeof(DWORD_PTR); for (SIZE_T i = 0; i < sizeIAT; i++) { //Scylla::windowLog.log(L"%08X %08X %d von %d", addressIAT + (DWORD_PTR)&pIATAddress[i] - (DWORD_PTR)iatBuffer, pIATAddress[i],i,sizeIAT); if (!isInvalidMemoryForIat(pIATAddress[i])) { if ( (pIATAddress[i] > minApiAddress) && (pIATAddress[i] < maxApiAddress) ) { apiFound = getApiByVirtualAddress(pIATAddress[i], &isSuspect); if (apiFound == 0) { Scylla::windowLog.log(L"getApiByVirtualAddress :: No Api found " PRINTF_DWORD_PTR_FULL, pIATAddress[i]); } if (apiFound == (ApiInfo *)1) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"apiFound == (ApiInfo *)1 -> " PRINTF_DWORD_PTR_FULL, pIATAddress[i]); #endif } else if (apiFound) { countApiFound++; #ifdef DEBUG_COMMENTS Scylla::debugLog.log(PRINTF_DWORD_PTR_FULL L" %s %d %s", apiFound->va, apiFound->module->getFilename(), apiFound->ordinal, apiFound->name); #endif if (module != apiFound->module) { module = apiFound->module; addFoundApiToModuleList(addressIAT + (DWORD_PTR)&pIATAddress[i] - (DWORD_PTR)iatBuffer, apiFound, true, isSuspect); } else { addFoundApiToModuleList(addressIAT + (DWORD_PTR)&pIATAddress[i] - (DWORD_PTR)iatBuffer, apiFound, false, isSuspect); } } else { countApiNotFound++; addNotFoundApiToModuleList(addressIAT + (DWORD_PTR)&pIATAddress[i] - (DWORD_PTR)iatBuffer, pIATAddress[i]); //printf("parseIAT :: API not found %08X\n", pIATAddress[i]); } } else { //printf("parseIAT :: API not found %08X\n", pIATAddress[i]); countApiNotFound++; addNotFoundApiToModuleList(addressIAT + (DWORD_PTR)&pIATAddress[i] - (DWORD_PTR)iatBuffer, pIATAddress[i]); } } } Scylla::windowLog.log(L"IAT parsing finished, found %d valid APIs, missed %d APIs", countApiFound, countApiNotFound); } void ApiReader::addFoundApiToModuleList(DWORD_PTR iatAddressVA, ApiInfo * apiFound, bool isNewModule, bool isSuspect) { if (isNewModule) { addModuleToModuleList(apiFound->module->getFilename(), iatAddressVA - targetImageBase); } addFunctionToModuleList(apiFound, iatAddressVA, iatAddressVA - targetImageBase, apiFound->ordinal, true, isSuspect); } bool ApiReader::addModuleToModuleList(const WCHAR * moduleName, DWORD_PTR firstThunk) { ImportModuleThunk module; module.firstThunk = firstThunk; wcscpy_s(module.moduleName, moduleName); (*moduleThunkList).insert(std::pair(firstThunk,module)); return true; } void ApiReader::addUnknownModuleToModuleList(DWORD_PTR firstThunk) { ImportModuleThunk module; module.firstThunk = firstThunk; wcscpy_s(module.moduleName, L"?"); (*moduleThunkList).insert(std::pair(firstThunk,module)); } bool ApiReader::addFunctionToModuleList(ApiInfo * apiFound, DWORD_PTR va, DWORD_PTR rva, WORD ordinal, bool valid, bool suspect) { ImportThunk import; ImportModuleThunk * module = 0; std::map::iterator iterator1; if ((*moduleThunkList).size() > 1) { iterator1 = (*moduleThunkList).begin(); while (iterator1 != (*moduleThunkList).end()) { if (rva >= iterator1->second.firstThunk) { iterator1++; if (iterator1 == (*moduleThunkList).end()) { iterator1--; module = &(iterator1->second); break; } else if (rva < iterator1->second.firstThunk) { iterator1--; module = &(iterator1->second); break; } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"Error iterator1 != (*moduleThunkList).end()"); #endif break; } } } else { iterator1 = (*moduleThunkList).begin(); module = &(iterator1->second); } if (!module) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"ImportsHandling::addFunction module not found rva " PRINTF_DWORD_PTR_FULL, rva); #endif return false; } import.suspect = suspect; import.valid = valid; import.va = va; import.rva = rva; import.apiAddressVA = apiFound->va; import.ordinal = ordinal; import.hint = (WORD)apiFound->hint; wcscpy_s(import.moduleName, apiFound->module->getFilename()); strcpy_s(import.name, apiFound->name); module->thunkList.insert(std::pair(import.rva, import)); return true; } void ApiReader::clearAll() { minApiAddress = -1; maxApiAddress = 0; for ( stdext::hash_map::iterator it = apiList.begin(); it != apiList.end(); ++it ) { delete it->second; } apiList.clear(); if (moduleThunkList != 0) { (*moduleThunkList).clear(); } } bool ApiReader::addNotFoundApiToModuleList(DWORD_PTR iatAddressVA, DWORD_PTR apiAddress) { ImportThunk import; ImportModuleThunk * module = 0; std::map::iterator iterator1; DWORD_PTR rva = iatAddressVA - targetImageBase; if ((*moduleThunkList).size() > 0) { iterator1 = (*moduleThunkList).begin(); while (iterator1 != (*moduleThunkList).end()) { if (rva >= iterator1->second.firstThunk) { iterator1++; if (iterator1 == (*moduleThunkList).end()) { iterator1--; //new unknown module if (iterator1->second.moduleName[0] == L'?') { module = &(iterator1->second); } else { addUnknownModuleToModuleList(rva); module = &((*moduleThunkList).find(rva)->second); } break; } else if (rva < iterator1->second.firstThunk) { iterator1--; module = &(iterator1->second); break; } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"Error iterator1 != (*moduleThunkList).end()\r\n"); #endif break; } } } else { //new unknown module addUnknownModuleToModuleList(rva); module = &((*moduleThunkList).find(rva)->second); } if (!module) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"ImportsHandling::addFunction module not found rva " PRINTF_DWORD_PTR_FULL,rva); #endif return false; } import.suspect = true; import.valid = false; import.va = iatAddressVA; import.rva = rva; import.apiAddressVA = apiAddress; import.ordinal = 0; wcscpy_s(import.moduleName, L"?"); strcpy_s(import.name, "?"); module->thunkList.insert(std::pair(import.rva, import)); return true; } bool ApiReader::isApiBlacklisted( const char * functionName ) { if (SystemInformation::currenOS < WIN_VISTA_32) { if (!strcmp(functionName, "RestoreLastError")) { return true; } else { return false; } } else { return false; } /*#ifdef _WIN64 else if (SystemInformation::currenOS == WIN_XP_64 && !strcmp(functionName, "DecodePointer")) { return true; } #endif*/ } bool ApiReader::isWinSxSModule( ModuleInfo * module ) { if (wcsstr(module->fullPath, L"\\WinSxS\\")) { return true; } else if (wcsstr(module->fullPath, L"\\winsxs\\")) { return true; } else { return false; } } bool ApiReader::isInvalidMemoryForIat( DWORD_PTR address ) { if (address == 0) return true; if (address == -1) return true; MEMORY_BASIC_INFORMATION memBasic = {0}; if (VirtualQueryEx(ProcessAccessHelp::hProcess, (LPCVOID)address, &memBasic, sizeof(MEMORY_BASIC_INFORMATION))) { - if((memBasic.State == MEM_COMMIT) && ProcessAccessHelp::isPageExecutable(memBasic.Protect)) + if((memBasic.State == MEM_COMMIT) && ProcessAccessHelp::isPageAccessable(memBasic.Protect)) { return false; } else { return true; } } else { return true; } } diff --git a/Scylla/MainGui.cpp b/Scylla/MainGui.cpp index 6d91608..07c44f3 100644 --- a/Scylla/MainGui.cpp +++ b/Scylla/MainGui.cpp @@ -1,1709 +1,1716 @@ #include "MainGui.h" #include "Architecture.h" //#include "PluginLoader.h" //#include "ConfigurationHolder.h" #include "PeParser.h" #include "DllInjectionPlugin.h" #include "DisassemblerGui.h" #include "PickApiGui.h" //#include "NativeWinApi.h" #include "ImportRebuilder.h" #include "SystemInformation.h" #include "Scylla.h" #include "AboutGui.h" #include "DonateGui.h" #include "OptionsGui.h" #include "TreeImportExport.h" extern CAppModule _Module; // o_O const WCHAR MainGui::filterExe[] = L"Executable (*.exe)\0*.exe\0All files\0*.*\0"; const WCHAR MainGui::filterDll[] = L"Dynamic Link Library (*.dll)\0*.dll\0All files\0*.*\0"; const WCHAR MainGui::filterExeDll[] = L"Executable (*.exe)\0*.exe\0Dynamic Link Library (*.dll)\0*.dll\0All files\0*.*\0"; const WCHAR MainGui::filterTxt[] = L"Text file (*.txt)\0*.txt\0All files\0*.*\0"; const WCHAR MainGui::filterXml[] = L"XML file (*.xml)\0*.xml\0All files\0*.*\0"; const WCHAR MainGui::filterMem[] = L"MEM file (*.mem)\0*.mem\0All files\0*.*\0"; MainGui::MainGui() : selectedProcess(0), isProcessSuspended(false), importsHandling(TreeImports), TreeImportsSubclass(this, IDC_TREE_IMPORTS) { /* Logger::getDebugLogFilePath(); ConfigurationHolder::loadConfiguration(); PluginLoader::findAllPlugins(); NativeWinApi::initialize(); SystemInformation::getSystemInformation(); if(ConfigurationHolder::getConfigObject(DEBUG_PRIVILEGE)->isTrue()) { processLister.setDebugPrivileges(); } ProcessAccessHelp::getProcessModules(GetCurrentProcessId(), ProcessAccessHelp::ownModuleList); */ hIcon.LoadIcon(IDI_ICON_SCYLLA); hMenuImports.LoadMenu(IDR_MENU_IMPORTS); hMenuLog.LoadMenu(IDR_MENU_LOG); accelerators.LoadAccelerators(IDR_ACCELERATOR_MAIN); hIconCheck.LoadIcon(IDI_ICON_CHECK, 16, 16); hIconWarning.LoadIcon(IDI_ICON_WARNING, 16, 16); hIconError.LoadIcon(IDI_ICON_ERROR, 16, 16); } BOOL MainGui::PreTranslateMessage(MSG* pMsg) { if(accelerators.TranslateAccelerator(m_hWnd, pMsg)) { return TRUE; // handled keyboard shortcuts } else if(IsDialogMessage(pMsg)) { return TRUE; // handled dialog messages } return FALSE; } void MainGui::InitDllStartWithPreSelect( PGUI_DLL_PARAMETER guiParam ) { ComboProcessList.ResetContent(); std::vector& processList = Scylla::processLister.getProcessListSnapshotNative(); int newSel = -1; for (size_t i = 0; i < processList.size(); i++) { if (processList[i].PID == guiParam->dwProcessId) newSel = (int)i; swprintf_s(stringBuffer, L"%04d - %s - %s", processList[i].PID, processList[i].filename, processList[i].fullPath); ComboProcessList.AddString(stringBuffer); } if (newSel != -1) { ComboProcessList.SetCurSel(newSel); processSelectedActionHandler(newSel); if (guiParam->mod) //init mod { //select DLL size_t len = ProcessAccessHelp::moduleList.size(); newSel = -1; for (size_t i = 0; i < len; i++) { if (ProcessAccessHelp::moduleList.at(i).modBaseAddr == (DWORD_PTR)guiParam->mod) { newSel = (int)i; break; } } if (newSel != -1) { //get selected module ProcessAccessHelp::selectedModule = &ProcessAccessHelp::moduleList.at(newSel); ProcessAccessHelp::targetImageBase = ProcessAccessHelp::selectedModule->modBaseAddr; ProcessAccessHelp::targetSizeOfImage = ProcessAccessHelp::selectedModule->modBaseSize; DWORD modEntryPoint = ProcessAccessHelp::getEntryPointFromFile(ProcessAccessHelp::selectedModule->fullPath); EditOEPAddress.SetValue(modEntryPoint + ProcessAccessHelp::targetImageBase); Scylla::windowLog.log(L"->>> Module %s selected.", ProcessAccessHelp::selectedModule->getFilename()); Scylla::windowLog.log(L"Imagebase: " PRINTF_DWORD_PTR_FULL L" Size: %08X EntryPoint: %08X", ProcessAccessHelp::selectedModule->modBaseAddr, ProcessAccessHelp::selectedModule->modBaseSize, modEntryPoint); } } } } BOOL MainGui::OnInitDialog(CWindow wndFocus, LPARAM lInitParam) { if (SystemInformation::currenOS == UNKNOWN_OS) { if(IDCANCEL == MessageBox(L"Operating System is not supported\r\nContinue anyway?", L"Scylla", MB_ICONWARNING | MB_OKCANCEL)) { SendMessage(WM_CLOSE); return FALSE; } } // register ourselves to receive PreTranslateMessage CMessageLoop* pLoop = _Module.GetMessageLoop(); pLoop->AddMessageFilter(this); setupStatusBar(); DoDataExchange(); // attach controls DlgResize_Init(true, true); // init CDialogResize Scylla::windowLog.setWindow(ListLog); appendPluginListToMenu(hMenuImports.GetSubMenu(0)); appendPluginListToMenu(CMenuHandle(GetMenu()).GetSubMenu(MenuImportsOffsetTrace)); enableDialogControls(FALSE); setIconAndDialogCaption(); if (lInitParam) { InitDllStartWithPreSelect((PGUI_DLL_PARAMETER)lInitParam); } return TRUE; } void MainGui::OnDestroy() { PostQuitMessage(0); } void MainGui::OnSize(UINT nType, CSize size) { StatusBar.SendMessage(WM_SIZE); SetMsgHandled(FALSE); } void MainGui::OnContextMenu(CWindow wnd, CPoint point) { switch(wnd.GetDlgCtrlID()) { case IDC_TREE_IMPORTS: DisplayContextMenuImports(wnd, point); return; case IDC_LIST_LOG: DisplayContextMenuLog(wnd, point); return; } SetMsgHandled(FALSE); } void MainGui::OnCommand(UINT uNotifyCode, int nID, CWindow wndCtl) { // Handle plugin trace menu selection if(uNotifyCode == 0 && !wndCtl.IsWindow()) // make sure it's a menu { if ((nID >= PLUGIN_MENU_BASE_ID) && (nID <= (int)(Scylla::plugins.getScyllaPluginList().size() + Scylla::plugins.getImprecPluginList().size() + PLUGIN_MENU_BASE_ID))) { pluginActionHandler(nID); return; } } SetMsgHandled(FALSE); } LRESULT MainGui::OnTreeImportsDoubleClick(const NMHDR* pnmh) { if(TreeImports.GetCount() < 1) return 0; // Get item under cursor CTreeItem over = findTreeItem(CPoint(GetMessagePos()), true); if(over && importsHandling.isImport(over)) { pickApiActionHandler(over); } return 0; } LRESULT MainGui::OnTreeImportsKeyDown(const NMHDR* pnmh) { const NMTVKEYDOWN * tkd = (NMTVKEYDOWN *)pnmh; switch(tkd->wVKey) { case VK_RETURN: { CTreeItem selected = TreeImports.GetFocusItem(); if(!selected.IsNull() && importsHandling.isImport(selected)) { pickApiActionHandler(selected); } } return 1; case VK_DELETE: deleteSelectedImportsActionHandler(); return 1; } SetMsgHandled(FALSE); return 0; } UINT MainGui::OnTreeImportsSubclassGetDlgCode(const MSG * lpMsg) { if(lpMsg) { switch(lpMsg->wParam) { case VK_RETURN: return DLGC_WANTMESSAGE; } } SetMsgHandled(FALSE); return 0; } void MainGui::OnTreeImportsSubclassChar(UINT nChar, UINT nRepCnt, UINT nFlags) { switch(nChar) { case VK_RETURN: break; default: SetMsgHandled(FALSE); break; } } void MainGui::OnProcessListDrop(UINT uNotifyCode, int nID, CWindow wndCtl) { fillProcessListComboBox(ComboProcessList); } void MainGui::OnProcessListSelected(UINT uNotifyCode, int nID, CWindow wndCtl) { int index = ComboProcessList.GetCurSel(); if (index != CB_ERR) { processSelectedActionHandler(index); } } void MainGui::OnPickDLL(UINT uNotifyCode, int nID, CWindow wndCtl) { pickDllActionHandler(); } void MainGui::OnOptions(UINT uNotifyCode, int nID, CWindow wndCtl) { optionsActionHandler(); } void MainGui::OnDump(UINT uNotifyCode, int nID, CWindow wndCtl) { dumpActionHandler(); } void MainGui::OnDumpMemory(UINT uNotifyCode, int nID, CWindow wndCtl) { dumpMemoryActionHandler(); } void MainGui::OnDumpSection(UINT uNotifyCode, int nID, CWindow wndCtl) { dumpSectionActionHandler(); } void MainGui::OnFixDump(UINT uNotifyCode, int nID, CWindow wndCtl) { dumpFixActionHandler(); } void MainGui::OnPERebuild(UINT uNotifyCode, int nID, CWindow wndCtl) { peRebuildActionHandler(); } void MainGui::OnDLLInject(UINT uNotifyCode, int nID, CWindow wndCtl) { dllInjectActionHandler(); } void MainGui::OnDisassembler(UINT uNotifyCode, int nID, CWindow wndCtl) { disassemblerActionHandler(); } void MainGui::OnIATAutoSearch(UINT uNotifyCode, int nID, CWindow wndCtl) { iatAutosearchActionHandler(); } void MainGui::OnGetImports(UINT uNotifyCode, int nID, CWindow wndCtl) { getImportsActionHandler(); } void MainGui::OnInvalidImports(UINT uNotifyCode, int nID, CWindow wndCtl) { showInvalidImportsActionHandler(); } void MainGui::OnSuspectImports(UINT uNotifyCode, int nID, CWindow wndCtl) { showSuspectImportsActionHandler(); } void MainGui::OnClearImports(UINT uNotifyCode, int nID, CWindow wndCtl) { clearImportsActionHandler(); } void MainGui::OnInvalidateSelected(UINT uNotifyCode, int nID, CWindow wndCtl) { invalidateSelectedImportsActionHandler(); } void MainGui::OnCutSelected(UINT uNotifyCode, int nID, CWindow wndCtl) { deleteSelectedImportsActionHandler(); } void MainGui::OnSaveTree(UINT uNotifyCode, int nID, CWindow wndCtl) { saveTreeActionHandler(); } void MainGui::OnLoadTree(UINT uNotifyCode, int nID, CWindow wndCtl) { loadTreeActionHandler(); } void MainGui::OnAutotrace(UINT uNotifyCode, int nID, CWindow wndCtl) { // TODO } void MainGui::OnExit(UINT uNotifyCode, int nID, CWindow wndCtl) { if (isProcessSuspended) { int msgboxID = MessageBox(L"Process is suspended. Do you want to terminate the process?\r\n\r\nYES = Terminate Process\r\nNO = Try to resume the process\r\nCancel = Do nothing", L"Information", MB_YESNOCANCEL|MB_ICONINFORMATION); switch (msgboxID) { case IDYES: ProcessAccessHelp::terminateProcess(); break; case IDNO: ProcessAccessHelp::resumeProcess(); break; default: break; } } DestroyWindow(); } void MainGui::OnAbout(UINT uNotifyCode, int nID, CWindow wndCtl) { showAboutDialog(); } void MainGui::OnDonate(UINT uNotifyCode, int nID, CWindow wndCtl) { showDonateDialog(); } void MainGui::setupStatusBar() { StatusBar.Create(m_hWnd, NULL, L"", WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | SBARS_TOOLTIPS, NULL, IDC_STATUS_BAR); CRect rcMain, rcStatus; GetClientRect(&rcMain); StatusBar.GetWindowRect(&rcStatus); const int PARTS = 4; int widths[PARTS]; widths[PART_COUNT] = rcMain.Width() / 5; widths[PART_INVALID] = widths[PART_COUNT] + rcMain.Width() / 5; widths[PART_IMAGEBASE] = widths[PART_INVALID] + rcMain.Width() / 3; widths[PART_MODULE] = -1; StatusBar.SetParts(PARTS, widths); ResizeClient(rcMain.Width(), rcMain.Height() + rcStatus.Height(), FALSE); } void MainGui::updateStatusBar() { // Rewrite ImportsHandling so we get these easily unsigned int totalImports = importsHandling.thunkCount(); unsigned int invalidImports = importsHandling.invalidThunkCount(); // \t = center, \t\t = right-align swprintf_s(stringBuffer, L"\tImports: %u", totalImports); StatusBar.SetText(PART_COUNT, stringBuffer); if(invalidImports > 0) { StatusBar.SetIcon(PART_INVALID, hIconError); } else { StatusBar.SetIcon(PART_INVALID, hIconCheck); } swprintf_s(stringBuffer, L"\tInvalid: %u", invalidImports); StatusBar.SetText(PART_INVALID, stringBuffer); if(selectedProcess) { DWORD_PTR imageBase = 0; const WCHAR * fileName = 0; if(ProcessAccessHelp::selectedModule) { imageBase = ProcessAccessHelp::selectedModule->modBaseAddr; fileName = ProcessAccessHelp::selectedModule->getFilename(); } else { imageBase = selectedProcess->imageBase; fileName = selectedProcess->filename; } swprintf_s(stringBuffer, L"\tImagebase: " PRINTF_DWORD_PTR_FULL, imageBase); StatusBar.SetText(PART_IMAGEBASE, stringBuffer); StatusBar.SetText(PART_MODULE, fileName); StatusBar.SetTipText(PART_MODULE, fileName); } else { StatusBar.SetText(PART_IMAGEBASE, L""); StatusBar.SetText(PART_MODULE, L""); } } bool MainGui::showFileDialog(WCHAR * selectedFile, bool save, const WCHAR * defFileName, const WCHAR * filter, const WCHAR * defExtension, const WCHAR * directory) { OPENFILENAME ofn = {0}; // WTL doesn't support new explorer styles on Vista and up // This is because it uses a custom hook, we could remove it or derive // from CFileDialog but this solution is easier and allows more control anyway (e.g. initial dir) if(defFileName) { wcscpy_s(selectedFile, MAX_PATH, defFileName); } else { selectedFile[0] = L'\0'; } ofn.lStructSize = sizeof(ofn); ofn.hwndOwner = m_hWnd; ofn.lpstrFilter = filter; ofn.lpstrDefExt = defExtension; // only first 3 chars are used, no dots! ofn.lpstrFile = selectedFile; ofn.lpstrInitialDir = directory; ofn.nMaxFile = MAX_PATH; ofn.Flags = OFN_PATHMUSTEXIST | OFN_HIDEREADONLY; /* *OFN_EXPLORER is automatically used, it only has to be specified *if using a custom hook *OFN_LONGNAMES is automatically used by explorer-style dialogs */ if(save) ofn.Flags |= OFN_OVERWRITEPROMPT; else ofn.Flags |= OFN_FILEMUSTEXIST; if(save) return 0 != GetSaveFileName(&ofn); else return 0 != GetOpenFileName(&ofn); } void MainGui::setIconAndDialogCaption() { SetIcon(hIcon, TRUE); SetIcon(hIcon, FALSE); SetWindowText(APPNAME L" " ARCHITECTURE L" " APPVERSION); } void MainGui::pickDllActionHandler() { if(!selectedProcess) return; PickDllGui dlgPickDll(ProcessAccessHelp::moduleList); if(dlgPickDll.DoModal()) { //get selected module ProcessAccessHelp::selectedModule = dlgPickDll.getSelectedModule(); ProcessAccessHelp::targetImageBase = ProcessAccessHelp::selectedModule->modBaseAddr; ProcessAccessHelp::targetSizeOfImage = ProcessAccessHelp::selectedModule->modBaseSize; DWORD modEntryPoint = ProcessAccessHelp::getEntryPointFromFile(ProcessAccessHelp::selectedModule->fullPath); EditOEPAddress.SetValue(modEntryPoint + ProcessAccessHelp::targetImageBase); Scylla::windowLog.log(L"->>> Module %s selected.", ProcessAccessHelp::selectedModule->getFilename()); Scylla::windowLog.log(L"Imagebase: " PRINTF_DWORD_PTR_FULL L" Size: %08X EntryPoint: %08X", ProcessAccessHelp::selectedModule->modBaseAddr, ProcessAccessHelp::selectedModule->modBaseSize, modEntryPoint); } else { ProcessAccessHelp::selectedModule = 0; } updateStatusBar(); } void MainGui::pickApiActionHandler(CTreeItem item) { if(!importsHandling.isImport(item)) return; // TODO: new node when user picked an API from another DLL? PickApiGui dlgPickApi(ProcessAccessHelp::moduleList); if(dlgPickApi.DoModal()) { const ApiInfo* api = dlgPickApi.getSelectedApi(); if(api && api->module) { importsHandling.setImport(item, api->module->getFilename(), api->name, api->ordinal, api->hint, true, api->isForwarded); } } updateStatusBar(); } void MainGui::startDisassemblerGui(CTreeItem selectedTreeNode) { if(!selectedProcess) return; DWORD_PTR address = importsHandling.getApiAddressByNode(selectedTreeNode); if (address) { BYTE test; if(!ProcessAccessHelp::readMemoryFromProcess(address, sizeof(test), &test)) { swprintf_s(stringBuffer, L"Can't read memory at " PRINTF_DWORD_PTR_FULL, address); MessageBox(stringBuffer, L"Failure", MB_ICONERROR); } else { DisassemblerGui dlgDisassembler(address, &apiReader); dlgDisassembler.DoModal(); } } } void MainGui::processSelectedActionHandler(int index) { std::vector& processList = Scylla::processLister.getProcessList(); Process &process = processList.at(index); selectedProcess = 0; clearImportsActionHandler(); Scylla::windowLog.log(L"Analyzing %s", process.fullPath); if (ProcessAccessHelp::hProcess != 0) { ProcessAccessHelp::closeProcessHandle(); apiReader.clearAll(); } if (!ProcessAccessHelp::openProcessHandle(process.PID)) { enableDialogControls(FALSE); Scylla::windowLog.log(L"Error: Cannot open process handle."); updateStatusBar(); return; } ProcessAccessHelp::getProcessModules(ProcessAccessHelp::hProcess, ProcessAccessHelp::moduleList); apiReader.readApisFromModuleList(); Scylla::windowLog.log(L"Loading modules done."); //TODO improve ProcessAccessHelp::selectedModule = 0; ProcessAccessHelp::targetImageBase = process.imageBase; ProcessAccessHelp::targetSizeOfImage = process.imageSize; process.imageSize = (DWORD)ProcessAccessHelp::targetSizeOfImage; Scylla::windowLog.log(L"Imagebase: " PRINTF_DWORD_PTR_FULL L" Size: %08X", process.imageBase, process.imageSize); process.entryPoint = ProcessAccessHelp::getEntryPointFromFile(process.fullPath); EditOEPAddress.SetValue(process.entryPoint + process.imageBase); selectedProcess = &process; enableDialogControls(TRUE); updateStatusBar(); } void MainGui::fillProcessListComboBox(CComboBox& hCombo) { hCombo.ResetContent(); std::vector& processList = Scylla::processLister.getProcessListSnapshotNative(); for (size_t i = 0; i < processList.size(); i++) { swprintf_s(stringBuffer, L"%04d - %s - %s", processList[i].PID, processList[i].filename, processList[i].fullPath); hCombo.AddString(stringBuffer); } } /* void MainGui::addTextToOutputLog(const WCHAR * text) { if (m_hWnd) { ListLog.SetCurSel(ListLog.AddString(text)); } } */ void MainGui::clearOutputLog() { if (m_hWnd) { ListLog.ResetContent(); } } bool MainGui::saveLogToFile(const WCHAR * file) { const BYTE BOM[] = {0xFF, 0xFE}; // UTF-16 little-endian const WCHAR newLine[] = L"\r\n"; bool success = true; HANDLE hFile = CreateFile(file, GENERIC_WRITE, FILE_SHARE_READ, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); if(hFile != INVALID_HANDLE_VALUE) { ProcessAccessHelp::writeMemoryToFileEnd(hFile, sizeof(BOM), BOM); WCHAR * buffer = 0; size_t bufsize = 0; for(int i = 0; i < ListLog.GetCount(); i++) { size_t size = ListLog.GetTextLen(i); size += _countof(newLine)-1; if(size+1 > bufsize) { bufsize = size+1; delete[] buffer; try { buffer = new WCHAR[bufsize]; } catch(std::bad_alloc&) { buffer = 0; success = false; break; } } ListLog.GetText(i, buffer); wcscat_s(buffer, bufsize, newLine); ProcessAccessHelp::writeMemoryToFileEnd(hFile, (DWORD)(size * sizeof(WCHAR)), buffer); } delete[] buffer; CloseHandle(hFile); } return success; } void MainGui::showInvalidImportsActionHandler() { importsHandling.selectImports(true, false); GotoDlgCtrl(TreeImports); } void MainGui::showSuspectImportsActionHandler() { importsHandling.selectImports(false, true); GotoDlgCtrl(TreeImports); } void MainGui::deleteSelectedImportsActionHandler() { CTreeItem selected = TreeImports.GetFirstSelectedItem(); while(!selected.IsNull()) { if(importsHandling.isModule(selected)) { importsHandling.cutModule(selected); } else { importsHandling.cutImport(selected); } selected = TreeImports.GetNextSelectedItem(selected); } updateStatusBar(); } void MainGui::invalidateSelectedImportsActionHandler() { CTreeItem selected = TreeImports.GetFirstSelectedItem(); while(!selected.IsNull()) { if(importsHandling.isImport(selected)) { importsHandling.invalidateImport(selected); } selected = TreeImports.GetNextSelectedItem(selected); } updateStatusBar(); } void MainGui::loadTreeActionHandler() { if(!selectedProcess) return; WCHAR selectedFilePath[MAX_PATH]; getCurrentModulePath(stringBuffer, _countof(stringBuffer)); if(showFileDialog(selectedFilePath, false, NULL, filterXml, NULL, stringBuffer)) { TreeImportExport treeIO(selectedFilePath); DWORD_PTR addrOEP = 0; DWORD_PTR addrIAT = 0; DWORD sizeIAT = 0; if(!treeIO.importTreeList(importsHandling.moduleList, &addrOEP, &addrIAT, &sizeIAT)) { Scylla::windowLog.log(L"Loading tree file failed %s", selectedFilePath); MessageBox(L"Loading tree file failed.", L"Failure", MB_ICONERROR); } else { EditOEPAddress.SetValue(addrOEP); EditIATAddress.SetValue(addrIAT); EditIATSize.SetValue(sizeIAT); importsHandling.displayAllImports(); updateStatusBar(); Scylla::windowLog.log(L"Loaded tree file %s", selectedFilePath); Scylla::windowLog.log(L"-> OEP: " PRINTF_DWORD_PTR_FULL, addrOEP); Scylla::windowLog.log(L"-> IAT: " PRINTF_DWORD_PTR_FULL L" Size: " PRINTF_DWORD_PTR, addrIAT, sizeIAT); } } } void MainGui::saveTreeActionHandler() { if(!selectedProcess) return; WCHAR selectedFilePath[MAX_PATH]; getCurrentModulePath(stringBuffer, _countof(stringBuffer)); if(showFileDialog(selectedFilePath, true, NULL, filterXml, L"xml", stringBuffer)) { TreeImportExport treeIO(selectedFilePath); DWORD_PTR addrOEP = EditOEPAddress.GetValue(); DWORD_PTR addrIAT = EditIATAddress.GetValue(); DWORD sizeIAT = EditIATSize.GetValue(); if(!treeIO.exportTreeList(importsHandling.moduleList, selectedProcess, addrOEP, addrIAT, sizeIAT)) { Scylla::windowLog.log(L"Saving tree file failed %s", selectedFilePath); MessageBox(L"Saving tree file failed.", L"Failure", MB_ICONERROR); } else { Scylla::windowLog.log(L"Saved tree file %s", selectedFilePath); } } } void MainGui::iatAutosearchActionHandler() { DWORD_PTR searchAddress = 0; DWORD_PTR addressIAT = 0, addressIATAdv = 0; DWORD sizeIAT = 0, sizeIATAdv = 0; IATSearch iatSearch; if(!selectedProcess) return; if(EditOEPAddress.GetWindowTextLength() > 0) { searchAddress = EditOEPAddress.GetValue(); if (searchAddress) { if (Scylla::config[USE_ADVANCED_IAT_SEARCH].isTrue()) { if (iatSearch.searchImportAddressTableInProcess(searchAddress, &addressIATAdv, &sizeIATAdv, true)) { Scylla::windowLog.log(L"IAT Search Adv: IAT VA " PRINTF_DWORD_PTR_FULL L" RVA " PRINTF_DWORD_PTR_FULL L" Size 0x%04X (%d)", addressIATAdv, addressIATAdv - ProcessAccessHelp::targetImageBase, sizeIATAdv, sizeIATAdv); } else { Scylla::windowLog.log(L"IAT Search Adv: IAT not found at OEP " PRINTF_DWORD_PTR_FULL L"!", searchAddress); } } if (iatSearch.searchImportAddressTableInProcess(searchAddress, &addressIAT, &sizeIAT, false)) { Scylla::windowLog.log(L"IAT Search Nor: IAT VA " PRINTF_DWORD_PTR_FULL L" RVA " PRINTF_DWORD_PTR_FULL L" Size 0x%04X (%d)", addressIAT, addressIAT - ProcessAccessHelp::targetImageBase, sizeIAT, sizeIAT); } else { Scylla::windowLog.log(L"IAT Search Nor: IAT not found at OEP " PRINTF_DWORD_PTR_FULL L"!", searchAddress); } if (addressIAT != 0 && addressIATAdv == 0) { setDialogIATAddressAndSize(addressIAT, sizeIAT); } else if (addressIAT == 0 && addressIATAdv != 0) { setDialogIATAddressAndSize(addressIATAdv, sizeIATAdv); } else if (addressIAT != 0 && addressIATAdv != 0) { if (addressIATAdv != addressIAT || sizeIAT != sizeIATAdv) { int msgboxID = MessageBox(L"Result of advanced and normal search is different. Do you want to use the IAT Search Advanced result?", L"Information", MB_YESNO|MB_ICONINFORMATION); if (msgboxID == IDYES) { setDialogIATAddressAndSize(addressIATAdv, sizeIATAdv); } else { setDialogIATAddressAndSize(addressIAT, sizeIAT); } } else { setDialogIATAddressAndSize(addressIAT, sizeIAT); } } } } } void MainGui::getImportsActionHandler() { if(!selectedProcess) return; DWORD_PTR addressIAT = EditIATAddress.GetValue(); DWORD sizeIAT = EditIATSize.GetValue(); if (addressIAT && sizeIAT) { apiReader.readAndParseIAT(addressIAT, sizeIAT, importsHandling.moduleList); importsHandling.displayAllImports(); updateStatusBar(); if (Scylla::config[SCAN_DIRECT_IMPORTS].isTrue()) { iatReferenceScan.ScanForDirectImports = true; iatReferenceScan.ScanForNormalImports = false; iatReferenceScan.apiReader = &apiReader; iatReferenceScan.startScan(ProcessAccessHelp::targetImageBase, (DWORD)ProcessAccessHelp::targetSizeOfImage, addressIAT, sizeIAT); Scylla::windowLog.log(L"DIRECT IMPORTS - Found %d possible direct imports with %d unique APIs!", iatReferenceScan.numberOfFoundDirectImports(), iatReferenceScan.numberOfFoundUniqueDirectImports()); if (iatReferenceScan.numberOfFoundDirectImports() > 0) { if (iatReferenceScan.numberOfDirectImportApisNotInIat() > 0) { Scylla::windowLog.log(L"DIRECT IMPORTS - Found %d additional api addresses!", iatReferenceScan.numberOfDirectImportApisNotInIat()); DWORD sizeIatNew = iatReferenceScan.addAdditionalApisToList(); Scylla::windowLog.log(L"DIRECT IMPORTS - Old IAT size 0x%08X new IAT size 0x%08X!", sizeIAT, sizeIatNew); EditIATSize.SetValue(sizeIatNew); importsHandling.scanAndFixModuleList(); importsHandling.displayAllImports(); } iatReferenceScan.printDirectImportLog(); if (Scylla::config[FIX_DIRECT_IMPORTS_NORMAL].isTrue() && (Scylla::config[FIX_DIRECT_IMPORTS_UNIVERSAL].isTrue() == false)) { int msgboxID = MessageBox(L"Direct Imports found. I can patch only direct imports by JMP/CALL (use universal method if you don't like this) but where is the junk byte?\r\n\r\nYES = After Instruction\r\nNO = Before the Instruction\r\nCancel = Do nothing", L"Information", MB_YESNOCANCEL|MB_ICONINFORMATION); if (msgboxID != IDCANCEL) { bool isAfter; if (msgboxID == IDYES) { isAfter = true; } else { isAfter = false; } iatReferenceScan.patchDirectImportsMemory(isAfter); Scylla::windowLog.log(L"DIRECT IMPORTS - Patched! Please dump target."); } } } } if (isIATOutsidePeImage(addressIAT)) { Scylla::windowLog.log(L"WARNING! IAT is not inside the PE image, requires rebasing!"); } } } void MainGui::SetupImportsMenuItems(CTreeItem item) { bool isItem, isImport = false; isItem = !item.IsNull(); if(isItem) { isImport = importsHandling.isImport(item); } CMenuHandle hSub = hMenuImports.GetSubMenu(0); UINT itemOnly = isItem ? MF_ENABLED : MF_GRAYED; UINT importOnly = isImport ? MF_ENABLED : MF_GRAYED; hSub.EnableMenuItem(ID__INVALIDATE, itemOnly); hSub.EnableMenuItem(ID__DISASSEMBLE, importOnly); hSub.EnableMenuItem(ID__CUTTHUNK, importOnly); hSub.EnableMenuItem(ID__DELETETREENODE, itemOnly); } void MainGui::DisplayContextMenuImports(CWindow hwnd, CPoint pt) { if(TreeImports.GetCount() < 1) return; CTreeItem over, parent; if(pt.x == -1 && pt.y == -1) // invoked by keyboard { CRect pos; over = TreeImports.GetFocusItem(); if(over) { over.EnsureVisible(); over.GetRect(&pos, TRUE); TreeImports.ClientToScreen(&pos); } else { TreeImports.GetWindowRect(&pos); } pt = pos.TopLeft(); } else { // Get item under cursor over = findTreeItem(pt, true); } SetupImportsMenuItems(over); CMenuHandle hSub = hMenuImports.GetSubMenu(0); BOOL menuItem = hSub.TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_RETURNCMD, pt.x, pt.y, hwnd); if (menuItem) { if ((menuItem >= PLUGIN_MENU_BASE_ID) && (menuItem <= (int)(Scylla::plugins.getScyllaPluginList().size() + Scylla::plugins.getImprecPluginList().size() + PLUGIN_MENU_BASE_ID))) { //wsprintf(stringBuffer, L"%d %s\n",menuItem,pluginList[menuItem - PLUGIN_MENU_BASE_ID].pluginName); //MessageBox(stringBuffer, L"plugin selection"); pluginActionHandler(menuItem); return; } switch (menuItem) { case ID__INVALIDATE: if(importsHandling.isModule(over)) importsHandling.invalidateModule(over); else importsHandling.invalidateImport(over); break; case ID__DISASSEMBLE: startDisassemblerGui(over); break; case ID__EXPANDALLNODES: importsHandling.expandAllTreeNodes(); break; case ID__COLLAPSEALLNODES: importsHandling.collapseAllTreeNodes(); break; case ID__CUTTHUNK: importsHandling.cutImport(over); break; case ID__DELETETREENODE: importsHandling.cutModule(importsHandling.isImport(over) ? over.GetParent() : over); break; } } updateStatusBar(); } void MainGui::DisplayContextMenuLog(CWindow hwnd, CPoint pt) { if(pt.x == -1 && pt.y == -1) // invoked by keyboard { CRect pos; ListLog.GetWindowRect(&pos); pt = pos.TopLeft(); } CMenuHandle hSub = hMenuLog.GetSubMenu(0); BOOL menuItem = hSub.TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_RETURNCMD, pt.x, pt.y, hwnd); if (menuItem) { switch (menuItem) { case ID__SAVE: WCHAR selectedFilePath[MAX_PATH]; getCurrentModulePath(stringBuffer, _countof(stringBuffer)); if(showFileDialog(selectedFilePath, true, NULL, filterTxt, L"txt", stringBuffer)) { saveLogToFile(selectedFilePath); } break; case ID__CLEAR: clearOutputLog(); break; } } } void MainGui::appendPluginListToMenu(CMenuHandle hMenu) { std::vector &scyllaPluginList = Scylla::plugins.getScyllaPluginList(); std::vector &imprecPluginList = Scylla::plugins.getImprecPluginList(); if (scyllaPluginList.size() > 0) { CMenuHandle newMenu; newMenu.CreatePopupMenu(); for (size_t i = 0; i < scyllaPluginList.size(); i++) { newMenu.AppendMenu(MF_STRING, i + PLUGIN_MENU_BASE_ID, scyllaPluginList[i].pluginName); } hMenu.AppendMenu(MF_MENUBARBREAK); hMenu.AppendMenu(MF_POPUP, newMenu, L"Scylla Plugins"); } if (imprecPluginList.size() > 0) { CMenuHandle newMenu; newMenu.CreatePopupMenu(); for (size_t i = 0; i < imprecPluginList.size(); i++) { newMenu.AppendMenu(MF_STRING, scyllaPluginList.size() + i + PLUGIN_MENU_BASE_ID, imprecPluginList[i].pluginName); } hMenu.AppendMenu(MF_MENUBARBREAK); hMenu.AppendMenu(MF_POPUP, newMenu, L"ImpREC Plugins"); } } void MainGui::dumpMemoryActionHandler() { WCHAR selectedFilePath[MAX_PATH]; DumpMemoryGui dlgDumpMemory; if(dlgDumpMemory.DoModal()) { getCurrentModulePath(stringBuffer, _countof(stringBuffer)); if(showFileDialog(selectedFilePath, true, dlgDumpMemory.dumpFilename, filterMem, L"mem", stringBuffer)) { if (ProcessAccessHelp::writeMemoryToNewFile(selectedFilePath,dlgDumpMemory.dumpedMemorySize,dlgDumpMemory.dumpedMemory)) { Scylla::windowLog.log(L"Memory dump saved %s", selectedFilePath); } else { Scylla::windowLog.log(L"Error! Cannot write memory dump to disk"); } } } } void MainGui::dumpSectionActionHandler() { WCHAR selectedFilePath[MAX_PATH] = {0}; WCHAR defaultFilename[MAX_PATH] = {0}; DumpSectionGui dlgDumpSection; const WCHAR * fileFilter; const WCHAR * defExtension; PeParser * peFile = 0; dlgDumpSection.entryPoint = EditOEPAddress.GetValue(); if (ProcessAccessHelp::selectedModule) { //dump DLL fileFilter = filterDll; defExtension = L"dll"; dlgDumpSection.imageBase = ProcessAccessHelp::selectedModule->modBaseAddr; //get it from gui wcscpy_s(dlgDumpSection.fullpath, ProcessAccessHelp::selectedModule->fullPath); } else { fileFilter = filterExe; defExtension = L"exe"; dlgDumpSection.imageBase = ProcessAccessHelp::targetImageBase; //get it from gui wcscpy_s(dlgDumpSection.fullpath, selectedProcess->fullPath); } if(dlgDumpSection.DoModal()) { getCurrentDefaultDumpFilename(defaultFilename, _countof(defaultFilename)); getCurrentModulePath(stringBuffer, _countof(stringBuffer)); if(showFileDialog(selectedFilePath, true, defaultFilename, fileFilter, defExtension, stringBuffer)) { checkSuspendProcess(); if (Scylla::config[USE_PE_HEADER_FROM_DISK].isTrue()) { peFile = new PeParser(dlgDumpSection.fullpath, true); } else { peFile = new PeParser(dlgDumpSection.imageBase, true); } std::vector & sectionList = dlgDumpSection.getSectionList(); if (peFile->dumpProcess(dlgDumpSection.imageBase, dlgDumpSection.entryPoint, selectedFilePath, sectionList)) { Scylla::windowLog.log(L"Dump success %s", selectedFilePath); } else { Scylla::windowLog.log(L"Error: Cannot dump image."); MessageBox(L"Cannot dump image.", L"Failure", MB_ICONERROR); } delete peFile; } } } void MainGui::dumpActionHandler() { if(!selectedProcess) return; WCHAR selectedFilePath[MAX_PATH] = {0}; WCHAR defaultFilename[MAX_PATH] = {0}; const WCHAR * fileFilter; const WCHAR * defExtension; DWORD_PTR modBase = 0; DWORD_PTR entrypoint = 0; WCHAR * filename = 0; PeParser * peFile = 0; if (ProcessAccessHelp::selectedModule) { fileFilter = filterDll; defExtension = L"dll"; } else { fileFilter = filterExe; defExtension = L"exe"; } getCurrentModulePath(stringBuffer, _countof(stringBuffer)); getCurrentDefaultDumpFilename(defaultFilename, _countof(defaultFilename)); if(showFileDialog(selectedFilePath, true, defaultFilename, fileFilter, defExtension, stringBuffer)) { entrypoint = EditOEPAddress.GetValue(); checkSuspendProcess(); if (ProcessAccessHelp::selectedModule) { //dump DLL modBase = ProcessAccessHelp::selectedModule->modBaseAddr; filename = ProcessAccessHelp::selectedModule->fullPath; } else { //dump exe modBase = ProcessAccessHelp::targetImageBase; filename = selectedProcess->fullPath; } if (Scylla::config[USE_PE_HEADER_FROM_DISK].isTrue()) { peFile = new PeParser(filename, true); } else { peFile = new PeParser(modBase, true); } - if (peFile->dumpProcess(modBase, entrypoint, selectedFilePath)) + if (peFile->isValidPeFile()) { - Scylla::windowLog.log(L"Dump success %s", selectedFilePath); + if (peFile->dumpProcess(modBase, entrypoint, selectedFilePath)) + { + Scylla::windowLog.log(L"Dump success %s", selectedFilePath); + } + else + { + Scylla::windowLog.log(L"Error: Cannot dump image."); + MessageBox(L"Cannot dump image.", L"Failure", MB_ICONERROR); + } } else { - Scylla::windowLog.log(L"Error: Cannot dump image."); - MessageBox(L"Cannot dump image.", L"Failure", MB_ICONERROR); + Scylla::windowLog.log(L"Error: Invalid PE file or invalid PE header. Try reading PE header from disk/process."); } delete peFile; } } void MainGui::peRebuildActionHandler() { DWORD newSize = 0; WCHAR selectedFilePath[MAX_PATH]; getCurrentModulePath(stringBuffer, _countof(stringBuffer)); if(showFileDialog(selectedFilePath, false, NULL, filterExeDll, NULL, stringBuffer)) { if (Scylla::config[CREATE_BACKUP].isTrue()) { if (!ProcessAccessHelp::createBackupFile(selectedFilePath)) { Scylla::windowLog.log(L"Creating backup file failed %s", selectedFilePath); } } DWORD fileSize = (DWORD)ProcessAccessHelp::getFileSize(selectedFilePath); PeParser peFile(selectedFilePath, true); if (!peFile.isValidPeFile()) { Scylla::windowLog.log(L"This is not a valid PE file %s", selectedFilePath); MessageBox(L"Not a valid PE file.", L"Failure", MB_ICONERROR); return; } if (peFile.readPeSectionsFromFile()) { peFile.setDefaultFileAlignment(); if (Scylla::config[REMOVE_DOS_HEADER_STUB].isTrue()) { peFile.removeDosStub(); } peFile.alignAllSectionHeaders(); peFile.fixPeHeader(); if (peFile.savePeFileToDisk(selectedFilePath)) { newSize = (DWORD)ProcessAccessHelp::getFileSize(selectedFilePath); if (Scylla::config[UPDATE_HEADER_CHECKSUM].isTrue()) { Scylla::windowLog.log(L"Generating PE header checksum"); if (!PeParser::updatePeHeaderChecksum(selectedFilePath, newSize)) { Scylla::windowLog.log(L"Generating PE header checksum FAILED!"); } } Scylla::windowLog.log(L"Rebuild success %s", selectedFilePath); Scylla::windowLog.log(L"-> Old file size 0x%08X new file size 0x%08X (%d %%)", fileSize, newSize, ((newSize * 100) / fileSize) ); } else { Scylla::windowLog.log(L"Rebuild failed, cannot save file %s", selectedFilePath); MessageBox(L"Rebuild failed. Cannot save file.", L"Failure", MB_ICONERROR); } } else { Scylla::windowLog.log(L"Rebuild failed, cannot read file %s", selectedFilePath); MessageBox(L"Rebuild failed. Cannot read file.", L"Failure", MB_ICONERROR); } } } void MainGui::dumpFixActionHandler() { if(!selectedProcess) return; if (TreeImports.GetCount() < 2) { Scylla::windowLog.log(L"Nothing to rebuild"); return; } WCHAR newFilePath[MAX_PATH]; WCHAR selectedFilePath[MAX_PATH]; const WCHAR * fileFilter; DWORD_PTR modBase = 0; DWORD_PTR entrypoint = EditOEPAddress.GetValue(); if (ProcessAccessHelp::selectedModule) { modBase = ProcessAccessHelp::selectedModule->modBaseAddr; fileFilter = filterDll; } else { modBase = ProcessAccessHelp::targetImageBase; fileFilter = filterExe; } getCurrentModulePath(stringBuffer, _countof(stringBuffer)); if (showFileDialog(selectedFilePath, false, NULL, fileFilter, NULL, stringBuffer)) { wcscpy_s(newFilePath, selectedFilePath); const WCHAR * extension = 0; WCHAR* dot = wcsrchr(newFilePath, L'.'); if (dot) { *dot = L'\0'; extension = selectedFilePath + (dot - newFilePath); //wcsrchr(selectedFilePath, L'.'); } wcscat_s(newFilePath, L"_SCY"); if(extension) { wcscat_s(newFilePath, extension); } ImportRebuilder importRebuild(selectedFilePath); if (Scylla::config[IAT_FIX_AND_OEP_FIX].isTrue()) { importRebuild.setEntryPointRva((DWORD)(entrypoint - modBase)); } if (Scylla::config[OriginalFirstThunk_SUPPORT].isTrue()) { importRebuild.enableOFTSupport(); } if (Scylla::config[SCAN_DIRECT_IMPORTS].isTrue() && Scylla::config[FIX_DIRECT_IMPORTS_UNIVERSAL].isTrue()) { if (iatReferenceScan.numberOfFoundDirectImports() > 0) { importRebuild.iatReferenceScan = &iatReferenceScan; importRebuild.BuildDirectImportsJumpTable = true; } } if (Scylla::config[CREATE_NEW_IAT_IN_SECTION].isTrue()) { importRebuild.iatReferenceScan = &iatReferenceScan; DWORD_PTR addressIAT = EditIATAddress.GetValue(); DWORD sizeIAT = EditIATSize.GetValue(); importRebuild.enableNewIatInSection(addressIAT, sizeIAT); } if (importRebuild.rebuildImportTable(newFilePath, importsHandling.moduleList)) { Scylla::windowLog.log(L"Import Rebuild success %s", newFilePath); } else { Scylla::windowLog.log(L"Import Rebuild failed %s", selectedFilePath); MessageBox(L"Import Rebuild failed", L"Failure", MB_ICONERROR); } } } void MainGui::enableDialogControls(BOOL value) { BOOL valButton = value ? TRUE : FALSE; GetDlgItem(IDC_BTN_PICKDLL).EnableWindow(valButton); GetDlgItem(IDC_BTN_DUMP).EnableWindow(valButton); GetDlgItem(IDC_BTN_FIXDUMP).EnableWindow(valButton); GetDlgItem(IDC_BTN_IATAUTOSEARCH).EnableWindow(valButton); GetDlgItem(IDC_BTN_GETIMPORTS).EnableWindow(valButton); GetDlgItem(IDC_BTN_SUSPECTIMPORTS).EnableWindow(valButton); GetDlgItem(IDC_BTN_INVALIDIMPORTS).EnableWindow(valButton); GetDlgItem(IDC_BTN_CLEARIMPORTS).EnableWindow(valButton); CMenuHandle menu = GetMenu(); UINT valMenu = value ? MF_ENABLED : MF_GRAYED; menu.EnableMenuItem(ID_FILE_DUMP, valMenu); menu.EnableMenuItem(ID_FILE_DUMPMEMORY, valMenu); menu.EnableMenuItem(ID_FILE_DUMPSECTION, valMenu); menu.EnableMenuItem(ID_FILE_FIXDUMP, valMenu); menu.EnableMenuItem(ID_IMPORTS_INVALIDATESELECTED, valMenu); menu.EnableMenuItem(ID_IMPORTS_CUTSELECTED, valMenu); menu.EnableMenuItem(ID_IMPORTS_SAVETREE, valMenu); menu.EnableMenuItem(ID_IMPORTS_LOADTREE, valMenu); menu.EnableMenuItem(ID_MISC_DLLINJECTION, valMenu); menu.EnableMenuItem(ID_MISC_DISASSEMBLER, valMenu); menu.GetSubMenu(MenuImportsOffsetTrace).EnableMenuItem(MenuImportsTraceOffsetScylla, MF_BYPOSITION | valMenu); menu.GetSubMenu(MenuImportsOffsetTrace).EnableMenuItem(MenuImportsTraceOffsetImpRec, MF_BYPOSITION | valMenu); //not yet implemented GetDlgItem(IDC_BTN_AUTOTRACE).EnableWindow(FALSE); menu.EnableMenuItem(ID_TRACE_AUTOTRACE, MF_GRAYED); } CTreeItem MainGui::findTreeItem(CPoint pt, bool screenCoordinates) { if(screenCoordinates) { TreeImports.ScreenToClient(&pt); } UINT flags; CTreeItem over = TreeImports.HitTest(pt, &flags); if(over) { if(!(flags & TVHT_ONITEM)) { over.m_hTreeItem = NULL; } } return over; } void MainGui::showAboutDialog() { AboutGui dlgAbout; dlgAbout.DoModal(); } void MainGui::showDonateDialog() { DonateGui dlgDonate; dlgDonate.DoModal(); } void MainGui::dllInjectActionHandler() { if(!selectedProcess) return; WCHAR selectedFilePath[MAX_PATH]; HMODULE hMod = 0; DllInjection dllInjection; getCurrentModulePath(stringBuffer, _countof(stringBuffer)); if (showFileDialog(selectedFilePath, false, NULL, filterDll, NULL, stringBuffer)) { hMod = dllInjection.dllInjection(ProcessAccessHelp::hProcess, selectedFilePath); if (hMod && Scylla::config[DLL_INJECTION_AUTO_UNLOAD].isTrue()) { if (!dllInjection.unloadDllInProcess(ProcessAccessHelp::hProcess, hMod)) { Scylla::windowLog.log(L"DLL unloading failed, target %s", selectedFilePath); } } if (hMod) { Scylla::windowLog.log(L"DLL Injection was successful, target %s", selectedFilePath); } else { Scylla::windowLog.log(L"DLL Injection failed, target %s", selectedFilePath); } } } void MainGui::disassemblerActionHandler() { DWORD_PTR oep = EditOEPAddress.GetValue(); DisassemblerGui disGuiDlg(oep, &apiReader); disGuiDlg.DoModal(); } void MainGui::optionsActionHandler() { OptionsGui dlgOptions; dlgOptions.DoModal(); } void MainGui::clearImportsActionHandler() { importsHandling.clearAllImports(); updateStatusBar(); } void MainGui::pluginActionHandler( int menuItem ) { if(!selectedProcess) return; DllInjectionPlugin dllInjectionPlugin; std::vector &scyllaPluginList = Scylla::plugins.getScyllaPluginList(); std::vector &imprecPluginList = Scylla::plugins.getImprecPluginList(); menuItem -= PLUGIN_MENU_BASE_ID; dllInjectionPlugin.hProcess = ProcessAccessHelp::hProcess; dllInjectionPlugin.apiReader = &apiReader; if (menuItem < (int)scyllaPluginList.size()) { //scylla plugin dllInjectionPlugin.injectPlugin(scyllaPluginList[menuItem], importsHandling.moduleList,selectedProcess->imageBase, selectedProcess->imageSize); } else { #ifndef _WIN64 menuItem -= (int)scyllaPluginList.size(); //imprec plugin dllInjectionPlugin.injectImprecPlugin(imprecPluginList[menuItem], importsHandling.moduleList,selectedProcess->imageBase, selectedProcess->imageSize); #endif } importsHandling.scanAndFixModuleList(); importsHandling.displayAllImports(); updateStatusBar(); } bool MainGui::getCurrentModulePath(WCHAR * buffer, size_t bufferSize) { if(!selectedProcess) return false; if(ProcessAccessHelp::selectedModule) { wcscpy_s(buffer, bufferSize, ProcessAccessHelp::selectedModule->fullPath); } else { wcscpy_s(buffer, bufferSize, selectedProcess->fullPath); } WCHAR * slash = wcsrchr(buffer, L'\\'); if(slash) { *(slash+1) = L'\0'; } return true; } void MainGui::checkSuspendProcess() { if (Scylla::config[SUSPEND_PROCESS_FOR_DUMPING].isTrue()) { if (!ProcessAccessHelp::suspendProcess()) { Scylla::windowLog.log(L"Error: Cannot suspend process."); } else { isProcessSuspended = true; Scylla::windowLog.log(L"Suspending process successful, please resume manually."); } } } void MainGui::setDialogIATAddressAndSize( DWORD_PTR addressIAT, DWORD sizeIAT ) { EditIATAddress.SetValue(addressIAT); EditIATSize.SetValue(sizeIAT); swprintf_s(stringBuffer, L"IAT found:\r\n\r\nStart: " PRINTF_DWORD_PTR_FULL L"\r\nSize: 0x%04X (%d) ", addressIAT, sizeIAT, sizeIAT); MessageBox(stringBuffer, L"IAT found", MB_ICONINFORMATION); } bool MainGui::isIATOutsidePeImage( DWORD_PTR addressIAT ) { DWORD_PTR minAdd = 0, maxAdd = 0; if(ProcessAccessHelp::selectedModule) { minAdd = ProcessAccessHelp::selectedModule->modBaseAddr; maxAdd = minAdd + ProcessAccessHelp::selectedModule->modBaseSize; } else { minAdd = selectedProcess->imageBase; maxAdd = minAdd + selectedProcess->imageSize; } if (addressIAT > minAdd && addressIAT < maxAdd) { return false; //inside pe image } else { return true; //outside pe image, requires rebasing iat } } bool MainGui::getCurrentDefaultDumpFilename( WCHAR * buffer, size_t bufferSize ) { if(!selectedProcess) return false; WCHAR * fullPath; if(ProcessAccessHelp::selectedModule) { fullPath = ProcessAccessHelp::selectedModule->fullPath; } else { fullPath = selectedProcess->fullPath; } WCHAR * temp = wcsrchr(fullPath, L'\\'); if(temp) { temp++; wcscpy_s(buffer, bufferSize, temp); temp = wcsrchr(buffer, L'.'); if (temp) { *temp = 0; if(ProcessAccessHelp::selectedModule) { wcscat_s(buffer, bufferSize, L"_dump.dll"); } else { wcscat_s(buffer, bufferSize, L"_dump.exe"); } } return true; } return false; } diff --git a/Scylla/ProcessAccessHelp.cpp b/Scylla/ProcessAccessHelp.cpp index 8a7a613..76e490d 100644 --- a/Scylla/ProcessAccessHelp.cpp +++ b/Scylla/ProcessAccessHelp.cpp @@ -1,942 +1,958 @@ #include "ProcessAccessHelp.h" #include "Scylla.h" #include "NativeWinApi.h" #include "PeParser.h" HANDLE ProcessAccessHelp::hProcess = 0; ModuleInfo * ProcessAccessHelp::selectedModule; DWORD_PTR ProcessAccessHelp::targetImageBase = 0; DWORD_PTR ProcessAccessHelp::targetSizeOfImage = 0; DWORD_PTR ProcessAccessHelp::maxValidAddress = 0; std::vector ProcessAccessHelp::moduleList; //target process module list std::vector ProcessAccessHelp::ownModuleList; //own module list _DInst ProcessAccessHelp::decomposerResult[MAX_INSTRUCTIONS]; unsigned int ProcessAccessHelp::decomposerInstructionsCount = 0; _CodeInfo ProcessAccessHelp::decomposerCi = {0}; _DecodedInst ProcessAccessHelp::decodedInstructions[MAX_INSTRUCTIONS]; unsigned int ProcessAccessHelp::decodedInstructionsCount = 0; BYTE ProcessAccessHelp::fileHeaderFromDisk[PE_HEADER_BYTES_COUNT]; //#define DEBUG_COMMENTS bool ProcessAccessHelp::openProcessHandle(DWORD dwPID) { if (dwPID > 0) { if (hProcess) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"openProcessHandle :: There is already a process handle, HANDLE %X", hProcess); #endif return false; } else { //hProcess = OpenProcess(PROCESS_CREATE_THREAD|PROCESS_VM_OPERATION|PROCESS_QUERY_INFORMATION|PROCESS_VM_READ|PROCESS_VM_WRITE, 0, dwPID); //if (!NT_SUCCESS(NativeWinApi::NtOpenProcess(&hProcess,PROCESS_CREATE_THREAD|PROCESS_VM_OPERATION|PROCESS_QUERY_INFORMATION|PROCESS_VM_READ|PROCESS_VM_WRITE,&ObjectAttributes, &cid))) hProcess = NativeOpenProcess(PROCESS_CREATE_THREAD|PROCESS_VM_OPERATION|PROCESS_QUERY_INFORMATION|PROCESS_VM_READ|PROCESS_VM_WRITE|PROCESS_SUSPEND_RESUME|PROCESS_TERMINATE, dwPID); if (hProcess) { return true; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"openProcessHandle :: Failed to open handle, PID %X", dwPID); #endif return false; } } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"openProcessHandle :: Wrong PID, PID %X", dwPID); #endif return false; } } HANDLE ProcessAccessHelp::NativeOpenProcess(DWORD dwDesiredAccess, DWORD dwProcessId) { HANDLE hProcess = 0; CLIENT_ID cid = {0}; OBJECT_ATTRIBUTES ObjectAttributes; NTSTATUS ntStatus = 0; InitializeObjectAttributes(&ObjectAttributes, 0, 0, 0, 0); cid.UniqueProcess = (HANDLE)dwProcessId; ntStatus = NativeWinApi::NtOpenProcess(&hProcess,dwDesiredAccess,&ObjectAttributes, &cid); if (NT_SUCCESS(ntStatus)) { return hProcess; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"NativeOpenProcess :: Failed to open handle, PID %X Error 0x%X", dwProcessId, NativeWinApi::RtlNtStatusToDosError(ntStatus)); #endif return 0; } } void ProcessAccessHelp::closeProcessHandle() { if (hProcess) { CloseHandle(hProcess); hProcess = 0; } moduleList.clear(); targetImageBase = 0; selectedModule = 0; } bool ProcessAccessHelp::readMemoryPartlyFromProcess(DWORD_PTR address, SIZE_T size, LPVOID dataBuffer) { DWORD_PTR addressPart = 0; DWORD_PTR readBytes = 0; DWORD_PTR bytesToRead = 0; MEMORY_BASIC_INFORMATION memBasic = {0}; bool returnValue = false; if (!hProcess) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryPartlyFromProcess :: hProcess == NULL"); #endif return returnValue; } if (!readMemoryFromProcess(address, size, dataBuffer)) { addressPart = address; do { if (!VirtualQueryEx(ProcessAccessHelp::hProcess,(LPCVOID)addressPart,&memBasic,sizeof(memBasic))) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryPartlyFromProcess :: Error VirtualQueryEx %X %X err: %u", addressPart,size, GetLastError()); #endif break; } bytesToRead = memBasic.RegionSize; if ( (readBytes+bytesToRead) > size) { bytesToRead = size - readBytes; } if (memBasic.State == MEM_COMMIT) { if (!readMemoryFromProcess(addressPart, bytesToRead, (LPVOID)((DWORD_PTR)dataBuffer + readBytes))) { break; } } else { ZeroMemory((LPVOID)((DWORD_PTR)dataBuffer + readBytes),bytesToRead); } readBytes += bytesToRead; addressPart += memBasic.RegionSize; } while (readBytes < size); if (readBytes == size) { returnValue = true; } } else { returnValue = true; } return returnValue; } bool ProcessAccessHelp::writeMemoryToProcess(DWORD_PTR address, SIZE_T size, LPVOID dataBuffer) { SIZE_T lpNumberOfBytesWritten = 0; if (!hProcess) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromProcess :: hProcess == NULL"); #endif return false; } return (WriteProcessMemory(hProcess,(LPVOID)address, dataBuffer, size,&lpNumberOfBytesWritten) != FALSE); } bool ProcessAccessHelp::readMemoryFromProcess(DWORD_PTR address, SIZE_T size, LPVOID dataBuffer) { SIZE_T lpNumberOfBytesRead = 0; DWORD dwProtect = 0; bool returnValue = false; if (!hProcess) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromProcess :: hProcess == NULL"); #endif return returnValue; } if (!ReadProcessMemory(hProcess, (LPVOID)address, dataBuffer, size, &lpNumberOfBytesRead)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromProcess :: Error ReadProcessMemory %X %X err: %u", address, size, GetLastError()); #endif if (!VirtualProtectEx(hProcess, (LPVOID)address, size, PAGE_READWRITE, &dwProtect)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromProcess :: Error VirtualProtectEx %X %X err: %u", address,size, GetLastError()); #endif returnValue = false; } else { if (!ReadProcessMemory(hProcess, (LPVOID)address, dataBuffer, size, &lpNumberOfBytesRead)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromProcess :: Error ReadProcessMemory %X %X err: %u", address, size, GetLastError()); #endif returnValue = false; } else { returnValue = true; } VirtualProtectEx(hProcess, (LPVOID)address, size, dwProtect, &dwProtect); } } else { returnValue = true; } if (returnValue) { if (size != lpNumberOfBytesRead) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromProcess :: Error ReadProcessMemory read %d bytes requested %d bytes", lpNumberOfBytesRead, size); #endif returnValue = false; } else { returnValue = true; } } return returnValue; } bool ProcessAccessHelp::decomposeMemory(BYTE * dataBuffer, SIZE_T bufferSize, DWORD_PTR startAddress) { ZeroMemory(&decomposerCi, sizeof(_CodeInfo)); decomposerCi.code = dataBuffer; decomposerCi.codeLen = (int)bufferSize; decomposerCi.dt = dt; decomposerCi.codeOffset = startAddress; decomposerInstructionsCount = 0; if (distorm_decompose(&decomposerCi, decomposerResult, sizeof(decomposerResult)/sizeof(decomposerResult[0]), &decomposerInstructionsCount) == DECRES_INPUTERR) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"decomposeMemory :: distorm_decompose == DECRES_INPUTERR"); #endif return false; } else { return true; } } bool ProcessAccessHelp::disassembleMemory(BYTE * dataBuffer, SIZE_T bufferSize, DWORD_PTR startOffset) { // Holds the result of the decoding. _DecodeResult res; // next is used for instruction's offset synchronization. // decodedInstructionsCount holds the count of filled instructions' array by the decoder. decodedInstructionsCount = 0; _OffsetType offset = startOffset; res = distorm_decode(offset, dataBuffer, (int)bufferSize, dt, decodedInstructions, MAX_INSTRUCTIONS, &decodedInstructionsCount); /* for (unsigned int i = 0; i < decodedInstructionsCount; i++) { #ifdef SUPPORT_64BIT_OFFSET printf("%0*I64x (%02d) %-24s %s%s%s\n", dt != Decode64Bits ? 8 : 16, decodedInstructions[i].offset, decodedInstructions[i].size, (char*)decodedInstructions[i].instructionHex.p, (char*)decodedInstructions[i].mnemonic.p, decodedInstructions[i].operands.length != 0 ? " " : "", (char*)decodedInstructions[i].operands.p); #else printf("%08x (%02d) %-24s %s%s%s\n", decodedInstructions[i].offset, decodedInstructions[i].size, (char*)decodedInstructions[i].instructionHex.p, (char*)decodedInstructions[i].mnemonic.p, decodedInstructions[i].operands.length != 0 ? " " : "", (char*)decodedInstructions[i].operands.p); #endif }*/ if (res == DECRES_INPUTERR) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"disassembleMemory :: res == DECRES_INPUTERR"); #endif return false; } else if (res == DECRES_SUCCESS) { //printf("disassembleMemory :: res == DECRES_SUCCESS\n"); return true; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"disassembleMemory :: res == %d", res); #endif return true; //not all instructions fit in buffer } } DWORD_PTR ProcessAccessHelp::findPattern(DWORD_PTR startOffset, DWORD size, BYTE * pattern, const char * mask) { DWORD pos = 0; size_t searchLen = strlen(mask) - 1; for(DWORD_PTR retAddress = startOffset; retAddress < startOffset + size; retAddress++) { if( *(BYTE*)retAddress == pattern[pos] || mask[pos] == '?' ) { if(mask[pos+1] == 0x00) { return (retAddress - searchLen); } pos++; } else { pos = 0; } } return 0; } bool ProcessAccessHelp::readHeaderFromCurrentFile(const WCHAR * filePath) { return readHeaderFromFile(fileHeaderFromDisk, sizeof(fileHeaderFromDisk), filePath); } LONGLONG ProcessAccessHelp::getFileSize(const WCHAR * filePath) { LONGLONG fileSize = 0; HANDLE hFile = CreateFile(filePath, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); if (hFile != INVALID_HANDLE_VALUE) { fileSize = getFileSize(hFile); CloseHandle(hFile); } return fileSize; } LONGLONG ProcessAccessHelp::getFileSize(HANDLE hFile) { LARGE_INTEGER lpFileSize = {0}; if ((hFile != INVALID_HANDLE_VALUE) && (hFile != 0)) { if (!GetFileSizeEx(hFile, &lpFileSize)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"ProcessAccessHelp::getFileSize :: GetFileSizeEx failed %u", GetLastError()); #endif return 0; } else { return lpFileSize.QuadPart; } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"ProcessAccessHelp::getFileSize hFile invalid"); #endif return 0; } } bool ProcessAccessHelp::readMemoryFromFile(HANDLE hFile, LONG offset, DWORD size, LPVOID dataBuffer) { DWORD lpNumberOfBytesRead = 0; DWORD retValue = 0; DWORD dwError = 0; if (hFile != INVALID_HANDLE_VALUE) { retValue = SetFilePointer(hFile, offset, NULL, FILE_BEGIN); dwError = GetLastError(); if ((retValue == INVALID_SET_FILE_POINTER) && (dwError != NO_ERROR)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromFile :: SetFilePointer failed error %u", dwError); #endif return false; } else { if (ReadFile(hFile, dataBuffer, size, &lpNumberOfBytesRead, 0)) { return true; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromFile :: ReadFile failed - size %d - error %u", size, GetLastError()); #endif return false; } } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readMemoryFromFile :: hFile invalid"); #endif return false; } } bool ProcessAccessHelp::writeMemoryToNewFile(const WCHAR * file,DWORD size, LPCVOID dataBuffer) { HANDLE hFile = CreateFile(file, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, 0, 0); if (hFile != INVALID_HANDLE_VALUE) { bool resultValue = writeMemoryToFile(hFile,0,size,dataBuffer); CloseHandle(hFile); return resultValue; } else { return false; } } bool ProcessAccessHelp::writeMemoryToFile(HANDLE hFile, LONG offset, DWORD size, LPCVOID dataBuffer) { DWORD lpNumberOfBytesWritten = 0; DWORD retValue = 0; DWORD dwError = 0; if ((hFile != INVALID_HANDLE_VALUE) && dataBuffer) { retValue = SetFilePointer(hFile, offset, NULL, FILE_BEGIN); dwError = GetLastError(); if ((retValue == INVALID_SET_FILE_POINTER) && (dwError != NO_ERROR)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"writeMemoryToFile :: SetFilePointer failed error %u", dwError); #endif return false; } else { if (WriteFile(hFile, dataBuffer, size, &lpNumberOfBytesWritten, 0)) { return true; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"writeMemoryToFile :: WriteFile failed - size %d - error %u", size, GetLastError()); #endif return false; } } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"writeMemoryToFile :: hFile invalid"); #endif return false; } } bool ProcessAccessHelp::writeMemoryToFileEnd(HANDLE hFile, DWORD size, LPCVOID dataBuffer) { DWORD lpNumberOfBytesWritten = 0; DWORD retValue = 0; if ((hFile != INVALID_HANDLE_VALUE) && (hFile != 0)) { SetFilePointer(hFile, 0, 0, FILE_END); if (WriteFile(hFile, dataBuffer, size, &lpNumberOfBytesWritten, 0)) { return true; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"writeMemoryToFileEnd :: WriteFile failed - size %d - error %u", size, GetLastError()); #endif return false; } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"writeMemoryToFileEnd :: hFile invalid"); #endif return false; } } bool ProcessAccessHelp::readHeaderFromFile(BYTE * buffer, DWORD bufferSize, const WCHAR * filePath) { DWORD lpNumberOfBytesRead = 0; LONGLONG fileSize = 0; DWORD dwSize = 0; bool returnValue = 0; HANDLE hFile = CreateFile(filePath, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); if( hFile == INVALID_HANDLE_VALUE ) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"readHeaderFromFile :: INVALID_HANDLE_VALUE %u", GetLastError()); #endif returnValue = false; } else { fileSize = getFileSize(hFile); if (fileSize > 0) { if (fileSize > bufferSize) { dwSize = bufferSize; } else { dwSize = (DWORD)(fileSize - 1); } returnValue = readMemoryFromFile(hFile, 0, dwSize, buffer); } CloseHandle(hFile); } return returnValue; } LPVOID ProcessAccessHelp::createFileMappingViewRead(const WCHAR * filePath) { return createFileMappingView(filePath, GENERIC_READ, PAGE_READONLY | SEC_IMAGE, FILE_MAP_READ); } LPVOID ProcessAccessHelp::createFileMappingViewFull(const WCHAR * filePath) { return createFileMappingView(filePath, GENERIC_ALL, PAGE_EXECUTE_READWRITE, FILE_MAP_ALL_ACCESS); } LPVOID ProcessAccessHelp::createFileMappingView(const WCHAR * filePath, DWORD accessFile, DWORD flProtect, DWORD accessMap) { HANDLE hFile = CreateFile(filePath, accessFile, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); if( hFile == INVALID_HANDLE_VALUE ) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"createFileMappingView :: INVALID_HANDLE_VALUE %u", GetLastError()); #endif return NULL; } HANDLE hMappedFile = CreateFileMapping(hFile, NULL, flProtect, 0, 0, NULL); CloseHandle(hFile); if( hMappedFile == NULL ) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"createFileMappingView :: hMappedFile == NULL"); #endif return NULL; } if (GetLastError() == ERROR_ALREADY_EXISTS) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"createFileMappingView :: GetLastError() == ERROR_ALREADY_EXISTS"); #endif return NULL; } LPVOID addrMappedDll = MapViewOfFile(hMappedFile, accessMap, 0, 0, 0); if( addrMappedDll == NULL ) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"createFileMappingView :: addrMappedDll == NULL"); #endif CloseHandle(hMappedFile); return NULL; } CloseHandle(hMappedFile); return addrMappedDll; } DWORD ProcessAccessHelp::getProcessByName(const WCHAR * processName) { DWORD dwPID = 0; HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); PROCESSENTRY32W pe32; pe32.dwSize = sizeof(PROCESSENTRY32W); if( !Process32FirstW( hProcessSnap, &pe32 ) ) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getProcessByName :: Error getting first Process"); #endif CloseHandle( hProcessSnap ); return 0; } do { if(!_wcsicmp(pe32.szExeFile, processName)) { dwPID = pe32.th32ProcessID; break; } } while(Process32NextW(hProcessSnap, &pe32)); CloseHandle(hProcessSnap); return dwPID; } bool ProcessAccessHelp::getProcessModules(HANDLE hProcess, std::vector &moduleList) { ModuleInfo module; WCHAR filename[MAX_PATH*2] = {0}; DWORD cbNeeded = 0; bool retVal = false; DeviceNameResolver deviceNameResolver; moduleList.reserve(20); EnumProcessModules(hProcess, 0, 0, &cbNeeded); HMODULE* hMods=(HMODULE*)malloc(cbNeeded*sizeof(HMODULE)); if (hMods) { if(EnumProcessModules(hProcess, hMods, cbNeeded, &cbNeeded)) { for(unsigned int i = 1; i < (cbNeeded/sizeof(HMODULE)); i++) //skip first module! { module.modBaseAddr = (DWORD_PTR)hMods[i]; module.modBaseSize = (DWORD)getSizeOfImageProcess(hProcess, module.modBaseAddr); module.isAlreadyParsed = false; module.parsing = false; filename[0] = 0; module.fullPath[0] = 0; if (GetMappedFileNameW(hProcess, (LPVOID)module.modBaseAddr, filename, _countof(filename)) > 0) { if (!deviceNameResolver.resolveDeviceLongNameToShort(filename, module.fullPath)) { if (!GetModuleFileNameExW(hProcess, (HMODULE)module.modBaseAddr, module.fullPath, _countof(module.fullPath))) { wcscpy_s(module.fullPath, filename); } } } else { GetModuleFileNameExW(hProcess, (HMODULE)module.modBaseAddr, module.fullPath, _countof(module.fullPath)); } moduleList.push_back(module); } retVal = true; } free(hMods); } return retVal; } bool ProcessAccessHelp::getMemoryRegionFromAddress(DWORD_PTR address, DWORD_PTR * memoryRegionBase, SIZE_T * memoryRegionSize) { MEMORY_BASIC_INFORMATION memBasic; if (VirtualQueryEx(hProcess,(LPCVOID)address,&memBasic,sizeof(MEMORY_BASIC_INFORMATION)) != sizeof(MEMORY_BASIC_INFORMATION)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getMemoryRegionFromAddress :: VirtualQueryEx error %u", GetLastError()); #endif return false; } else { *memoryRegionBase = (DWORD_PTR)memBasic.BaseAddress; *memoryRegionSize = memBasic.RegionSize; return true; } } bool ProcessAccessHelp::getSizeOfImageCurrentProcess() { DWORD_PTR newSizeOfImage = getSizeOfImageProcess(ProcessAccessHelp::hProcess, ProcessAccessHelp::targetImageBase); if (newSizeOfImage != 0) { ProcessAccessHelp::targetSizeOfImage = newSizeOfImage; return true; } else { return false; } } SIZE_T ProcessAccessHelp::getSizeOfImageProcess(HANDLE processHandle, DWORD_PTR moduleBase) { SIZE_T sizeOfImage = 0, sizeOfImageNative = 0; MEMORY_BASIC_INFORMATION lpBuffer = {0}; sizeOfImageNative = getSizeOfImageProcessNative(processHandle, moduleBase); if (sizeOfImageNative) { return sizeOfImageNative; } WCHAR filenameOriginal[MAX_PATH*2] = {0}; WCHAR filenameTest[MAX_PATH*2] = {0}; GetMappedFileNameW(processHandle, (LPVOID)moduleBase, filenameOriginal, _countof(filenameOriginal)); do { moduleBase = (DWORD_PTR)((SIZE_T)moduleBase + lpBuffer.RegionSize); sizeOfImage += lpBuffer.RegionSize; if (!VirtualQueryEx(processHandle, (LPCVOID)moduleBase, &lpBuffer, sizeof(MEMORY_BASIC_INFORMATION))) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getSizeOfImageProcess :: VirtualQuery failed %X", GetLastError()); #endif lpBuffer.Type = 0; sizeOfImage = 0; } GetMappedFileNameW(processHandle, (LPVOID)moduleBase, filenameTest, _countof(filenameTest)); if (_wcsicmp(filenameOriginal,filenameTest) != 0)//problem: 2 modules without free space { break; } } while (lpBuffer.Type == MEM_IMAGE); //if (sizeOfImage != sizeOfImageNative) //{ // WCHAR temp[1000] = {0}; // wsprintfW(temp, L"0x%X sizeofimage\n0x%X sizeOfImageNative", sizeOfImage, sizeOfImageNative); // MessageBoxW(0, temp, L"Test", 0); //} return sizeOfImage; } DWORD ProcessAccessHelp::getEntryPointFromFile(const WCHAR * filePath) { PeParser peFile(filePath, false); return peFile.getEntryPoint(); } bool ProcessAccessHelp::createBackupFile(const WCHAR * filePath) { size_t fileNameLength = wcslen(filePath) + 5; //.bak + null BOOL retValue = 0; WCHAR * backupFile = new WCHAR[fileNameLength]; wcscpy_s(backupFile, fileNameLength, filePath); wcscat_s(backupFile, fileNameLength, L".bak"); retValue = CopyFile(filePath, backupFile, FALSE); if (!retValue) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"createBackupFile :: CopyFile failed with error 0x%X", GetLastError()); #endif } delete [] backupFile; return retValue != 0; } DWORD ProcessAccessHelp::getModuleHandlesFromProcess(const HANDLE hProcess, HMODULE ** hMods) { DWORD count = 30; DWORD cbNeeded = 0; bool notEnough = true; *hMods = new HMODULE[count]; do { if (!EnumProcessModules(hProcess, *hMods, count * sizeof(HMODULE), &cbNeeded)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getModuleHandlesFromProcess :: EnumProcessModules failed count %d", count); #endif delete [] *hMods; return 0; } if ((count * sizeof(HMODULE)) < cbNeeded) { delete [] *hMods; count = cbNeeded / sizeof(HMODULE); *hMods = new HMODULE[count]; } else { notEnough = false; } } while (notEnough); return cbNeeded / sizeof(HMODULE); } void ProcessAccessHelp::setCurrentProcessAsTarget() { ProcessAccessHelp::hProcess = GetCurrentProcess(); } bool ProcessAccessHelp::suspendProcess() { if (NativeWinApi::NtSuspendProcess) { if (NT_SUCCESS( NativeWinApi::NtSuspendProcess(ProcessAccessHelp::hProcess) )) { return true; } } return false; } bool ProcessAccessHelp::resumeProcess() { if (NativeWinApi::NtResumeProcess) { if (NT_SUCCESS( NativeWinApi::NtResumeProcess(ProcessAccessHelp::hProcess) )) { return true; } } return false; } bool ProcessAccessHelp::terminateProcess() { if (NativeWinApi::NtTerminateProcess) { if (NT_SUCCESS( NativeWinApi::NtTerminateProcess(ProcessAccessHelp::hProcess, 0) )) { return true; } } return false; } +bool ProcessAccessHelp::isPageAccessable( DWORD Protect ) +{ + if (Protect & PAGE_NOCACHE) Protect ^= PAGE_NOCACHE; + if (Protect & PAGE_GUARD) Protect ^= PAGE_GUARD; + if (Protect & PAGE_WRITECOMBINE) Protect ^= PAGE_WRITECOMBINE; + + if (Protect != PAGE_NOACCESS) + { + return true; + } + else + { + return false; + } +} + bool ProcessAccessHelp::isPageExecutable( DWORD Protect ) { if (Protect & PAGE_NOCACHE) Protect ^= PAGE_NOCACHE; if (Protect & PAGE_GUARD) Protect ^= PAGE_GUARD; if (Protect & PAGE_WRITECOMBINE) Protect ^= PAGE_WRITECOMBINE; switch(Protect) { case PAGE_EXECUTE: { return true; } case PAGE_EXECUTE_READ: { return true; } case PAGE_EXECUTE_READWRITE: { return true; } case PAGE_EXECUTE_WRITECOPY: { return true; } default: return false; } } SIZE_T ProcessAccessHelp::getSizeOfImageProcessNative( HANDLE processHandle, DWORD_PTR moduleBase ) { MEMORY_REGION_INFORMATION memRegion = {0}; SIZE_T retLen = 0; if (NativeWinApi::NtQueryVirtualMemory(processHandle, (PVOID)moduleBase, MemoryRegionInformation, &memRegion, sizeof(MEMORY_REGION_INFORMATION), &retLen) == STATUS_SUCCESS) { return memRegion.RegionSize; } return 0; } diff --git a/Scylla/ProcessAccessHelp.h b/Scylla/ProcessAccessHelp.h index 6bdb63b..5524a52 100644 --- a/Scylla/ProcessAccessHelp.h +++ b/Scylla/ProcessAccessHelp.h @@ -1,229 +1,230 @@ #pragma once #include #include #include /************************************************************************/ /* distorm */ /************************************************************************/ #include #include // The number of the array of instructions the decoder function will use to return the disassembled instructions. // Play with this value for performance... #define MAX_INSTRUCTIONS (200) /************************************************************************/ class ApiInfo; class ModuleInfo { public: WCHAR fullPath[MAX_PATH]; DWORD_PTR modBaseAddr; DWORD modBaseSize; bool isAlreadyParsed; bool parsing; /* for iat rebuilding with duplicate entries: ntdll = low priority kernelbase = low priority SHLWAPI = low priority kernel32 = high priority priority = 1 -> normal/high priority priority = 0 -> low priority */ int priority; std::vector apiList; ModuleInfo() { modBaseAddr = 0; modBaseSize = 0; priority = 1; isAlreadyParsed = false; parsing = false; } const WCHAR * getFilename() const { const WCHAR* slash = wcsrchr(fullPath, L'\\'); if(slash) { return slash+1; } return fullPath; } }; class ApiInfo { public: char name[MAX_PATH]; WORD hint; DWORD_PTR va; DWORD_PTR rva; WORD ordinal; bool isForwarded; ModuleInfo * module; }; class ProcessAccessHelp { public: static HANDLE hProcess; //OpenProcess handle to target process static DWORD_PTR targetImageBase; static DWORD_PTR targetSizeOfImage; static DWORD_PTR maxValidAddress; static ModuleInfo * selectedModule; static std::vector moduleList; //target process module list static std::vector ownModuleList; //own module list static const size_t PE_HEADER_BYTES_COUNT = 2000; static BYTE fileHeaderFromDisk[PE_HEADER_BYTES_COUNT]; //for decomposer static _DInst decomposerResult[MAX_INSTRUCTIONS]; static unsigned int decomposerInstructionsCount; static _CodeInfo decomposerCi; //distorm :: Decoded instruction information. static _DecodedInst decodedInstructions[MAX_INSTRUCTIONS]; static unsigned int decodedInstructionsCount; #ifdef _WIN64 static const _DecodeType dt = Decode64Bits; #else static const _DecodeType dt = Decode32Bits; #endif /* * Open a new process handle */ static bool openProcessHandle(DWORD dwPID); static HANDLE NativeOpenProcess(DWORD dwDesiredAccess, DWORD dwProcessId); static void closeProcessHandle(); /* * Get all modules from a process */ static bool getProcessModules(HANDLE hProcess, std::vector &moduleList); /* * file mapping view with different access level */ static LPVOID createFileMappingViewRead(const WCHAR * filePath); static LPVOID createFileMappingViewFull(const WCHAR * filePath); /* * Create a file mapping view of a file */ static LPVOID createFileMappingView(const WCHAR * filePath, DWORD accessFile, DWORD flProtect, DWORD accessMap); /* * Read memory from target process */ static bool readMemoryFromProcess(DWORD_PTR address, SIZE_T size, LPVOID dataBuffer); static bool writeMemoryToProcess(DWORD_PTR address, SIZE_T size, LPVOID dataBuffer); /* * Read memory from target process and ignore no data pages */ static bool readMemoryPartlyFromProcess(DWORD_PTR address, SIZE_T size, LPVOID dataBuffer); /* * Read memory from file */ static bool readMemoryFromFile(HANDLE hFile, LONG offset, DWORD size, LPVOID dataBuffer); /* * Write memory to file */ static bool writeMemoryToFile(HANDLE hFile, LONG offset, DWORD size, LPCVOID dataBuffer); /* * Write memory to new file */ static bool writeMemoryToNewFile(const WCHAR * file,DWORD size, LPCVOID dataBuffer); /* * Write memory to file end */ static bool writeMemoryToFileEnd(HANDLE hFile, DWORD size, LPCVOID dataBuffer); /* * Disassemble Memory */ static bool disassembleMemory(BYTE * dataBuffer, SIZE_T bufferSize, DWORD_PTR startOffset); static bool decomposeMemory(BYTE * dataBuffer, SIZE_T bufferSize, DWORD_PTR startAddress); /* * Search for pattern */ static DWORD_PTR findPattern(DWORD_PTR startOffset, DWORD size, BYTE * pattern, const char * mask); /* * Get process ID by process name */ static DWORD getProcessByName(const WCHAR * processName); /* * Get memory region from address */ static bool getMemoryRegionFromAddress(DWORD_PTR address, DWORD_PTR * memoryRegionBase, SIZE_T * memoryRegionSize); /* * Read PE Header from file */ static bool readHeaderFromFile(BYTE * buffer, DWORD bufferSize, const WCHAR * filePath); static bool readHeaderFromCurrentFile(const WCHAR * filePath); /* * Get real sizeOfImage value */ static SIZE_T getSizeOfImageProcess(HANDLE processHandle, DWORD_PTR moduleBase); /* * Get real sizeOfImage value current process */ static bool getSizeOfImageCurrentProcess(); static LONGLONG getFileSize(HANDLE hFile); static LONGLONG getFileSize(const WCHAR * filePath); static DWORD getEntryPointFromFile(const WCHAR * filePath); static bool createBackupFile(const WCHAR * filePath); static DWORD getModuleHandlesFromProcess(const HANDLE hProcess, HMODULE ** hMods ); static void setCurrentProcessAsTarget(); static bool suspendProcess(); static bool resumeProcess(); static bool terminateProcess(); static bool isPageExecutable( DWORD Protect ); + static bool isPageAccessable( DWORD Protect ); static SIZE_T getSizeOfImageProcessNative( HANDLE processHandle, DWORD_PTR moduleBase ); }; diff --git a/Scylla/Scylla.h b/Scylla/Scylla.h index d12c9b1..3b66b2b 100644 --- a/Scylla/Scylla.h +++ b/Scylla/Scylla.h @@ -1,35 +1,35 @@ #pragma once #include "ConfigurationHolder.h" #include "PluginLoader.h" #include "ProcessLister.h" #include "Logger.h" #define APPNAME_S "Scylla" -#define APPVERSION_S "v0.9.6" +#define APPVERSION_S "v0.9.6a" #define APPVERSIONDWORD 0x00009600 #define DONATE_BTC_ADDRESS "1GmVrhWwUhwLohaCLP4SKV5kkz8rd16N8h" #define APPNAME TEXT(APPNAME_S) #define APPVERSION TEXT(APPVERSION_S) class Scylla { public: static void initAsGuiApp(); static void initAsDll(); static ConfigurationHolder config; static PluginLoader plugins; static ProcessLister processLister; static FileLog debugLog; static ListboxLog windowLog; private: static const WCHAR DEBUG_LOG_FILENAME[]; };