diff --git a/Scylla/PeDump.cpp b/Scylla/PeDump.cpp index 41fca1f..8da6b6b 100644 --- a/Scylla/PeDump.cpp +++ b/Scylla/PeDump.cpp @@ -1,437 +1,383 @@ #include "PeDump.h" #include "ProcessAccessHelp.h" #include "Scylla.h" #include "Architecture.h" +#include "PeParser.h" bool PeDump::useHeaderFromDisk = true; bool PeDump::appendOverlayData = true; //#define DEBUG_COMMENTS bool PeDump::fillPeHeaderStructs(bool fromDisk) { DWORD dwSize = ProcessAccessHelp::PE_HEADER_BYTES_COUNT; if (dwSize > sizeOfImage) { dwSize = (DWORD)sizeOfImage; } headerData = new BYTE[dwSize]; if (!headerData) return false; if (fromDisk) { //from disk if (!ProcessAccessHelp::readHeaderFromFile(headerData, dwSize, fullpath)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"fillPeHeaderStructs -> ProcessAccessHelp::readHeaderFromFile failed - %X %s", dwSize, fullpath); #endif return false; } } else { //from memory if (!ProcessAccessHelp::readMemoryPartlyFromProcess(imageBase, dwSize, headerData)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"fillPeHeaderStructs -> ProcessAccessHelp::readMemoryFromProcess failed - " PRINTF_DWORD_PTR_FULL L" %X " PRINTF_DWORD_PTR_FULL, imageBase, dwSize, headerData); #endif return false; } } pDOSHeader = (PIMAGE_DOS_HEADER)headerData; pNTHeader = (PIMAGE_NT_HEADERS)((DWORD_PTR)headerData + (DWORD_PTR)pDOSHeader->e_lfanew); pSectionHeader = IMAGE_FIRST_SECTION(pNTHeader); return true; } bool PeDump::validateHeaders() { if ((pDOSHeader != 0) && (pDOSHeader->e_magic == IMAGE_DOS_SIGNATURE) && (pNTHeader->Signature == IMAGE_NT_SIGNATURE)) { #ifdef _WIN64 if (pNTHeader->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) #else if (pNTHeader->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) #endif { return true; } else { return false; } } else { return false; } } bool PeDump::dumpCompleteProcessToDisk(const WCHAR * dumpFilePath) { if (!fillPeHeaderStructs(useHeaderFromDisk)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"dumpCompleteProcessToDisk -> fillPeHeaderStructs failed"); #endif return false; } if (!validateHeaders()) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"dumpCompleteProcessToDisk -> validateHeaders failed"); #endif return false; } dumpData = new BYTE[sizeOfImage]; if (dumpData) { if (!ProcessAccessHelp::readMemoryPartlyFromProcess(imageBase,sizeOfImage,dumpData)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"dumpCompleteProcessToDisk -> readMemoryFromProcess failed"); #endif return false; } else { fixDump(dumpData); if (saveDumpToDisk(dumpFilePath, dumpData, (DWORD)sizeOfImage)) { if (appendOverlayData) { appendOverlayDataToDump(dumpFilePath); } //printf("dump success\n"); return true; } else { return false; } } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"dumpCompleteProcessToDisk -> new BYTE[sizeOfImage] failed %X", sizeOfImage); #endif return false; } } bool PeDump::appendOverlayDataToDump(const WCHAR *dumpFilePath) { DWORD_PTR offset = 0; DWORD size = 0; if (getOverlayData(fullpath,&offset,&size)) { if (offset == 0) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"appendOverlayDataToDump :: No overlay exists"); #endif return true; } else { if (copyFileDataFromOffset(fullpath, dumpFilePath, offset, size)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"appendOverlayDataToDump :: appending overlay success"); #endif return true; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"appendOverlayDataToDump :: appending overlay failed"); #endif return false; } } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"appendOverlayDataToDump :: getOverlayData failed"); #endif return false; } } bool PeDump::copyFileDataFromOffset(const WCHAR * sourceFile, const WCHAR * destFile, DWORD_PTR fileOffset, DWORD dwSize) { HANDLE hSourceFile, hDestFile; BYTE * dataBuffer = 0; bool retValue = false; hSourceFile = CreateFile(sourceFile, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); if(hSourceFile == INVALID_HANDLE_VALUE) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"copyFileDataFromOffset :: failed to open source file"); #endif return false; } hDestFile = CreateFile(destFile, GENERIC_WRITE, FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, 0); if(hSourceFile == INVALID_HANDLE_VALUE) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"copyFileDataFromOffset :: failed to open destination file"); #endif CloseHandle(hSourceFile); return false; } dataBuffer = new BYTE[dwSize]; if (ProcessAccessHelp::readMemoryFromFile(hSourceFile, (LONG)fileOffset, dwSize, dataBuffer)) { if (ProcessAccessHelp::writeMemoryToFileEnd(hDestFile,dwSize,dataBuffer)) { retValue = true; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"copyFileDataFromOffset :: writeMemoryToFileEnd failed"); #endif retValue = false; } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"copyFileDataFromOffset :: readMemoryFromFile failed to read from source file"); #endif retValue = false; } delete [] dataBuffer; CloseHandle(hSourceFile); CloseHandle(hDestFile); return retValue; } void PeDump::fixDump(BYTE * dumpBuffer) { int counter = 0; PIMAGE_DOS_HEADER pDos = (PIMAGE_DOS_HEADER)dumpBuffer; PIMAGE_NT_HEADERS pNt = (PIMAGE_NT_HEADERS)((DWORD_PTR)dumpBuffer + pDos->e_lfanew); PIMAGE_SECTION_HEADER pSec = IMAGE_FIRST_SECTION(pNt); fixNtHeaderForDump(pNt, pNTHeader); do { fixSectionHeaderForDump(pSec, pSectionHeader); pSectionHeader++; pSec++; counter++; } while (counter < pNt->FileHeader.NumberOfSections); } void PeDump::fixBadNtHeaderValues(PIMAGE_NT_HEADERS pNtHead) { //maybe imagebase in process is not real imagebase pNtHead->OptionalHeader.ImageBase = imageBase; pNtHead->OptionalHeader.AddressOfEntryPoint = (DWORD)(entryPoint - imageBase); pNtHead->OptionalHeader.SizeOfImage = sizeOfImage; } void PeDump::fixSectionHeaderForDump(PIMAGE_SECTION_HEADER oldSecHead, PIMAGE_SECTION_HEADER newSecHead) { memcpy_s(oldSecHead->Name, IMAGE_SIZEOF_SHORT_NAME, newSecHead->Name, IMAGE_SIZEOF_SHORT_NAME); oldSecHead->Characteristics = newSecHead->Characteristics; oldSecHead->Misc.VirtualSize = newSecHead->Misc.VirtualSize; oldSecHead->VirtualAddress = newSecHead->VirtualAddress; oldSecHead->SizeOfRawData = newSecHead->Misc.VirtualSize; oldSecHead->PointerToRawData = newSecHead->VirtualAddress; } void PeDump::fixNtHeaderForDump(PIMAGE_NT_HEADERS oldNtHead, PIMAGE_NT_HEADERS newNtHead) { //some special fixBadNtHeaderValues(newNtHead); //fix FileHeader oldNtHead->FileHeader.NumberOfSections = newNtHead->FileHeader.NumberOfSections; //fix OptionalHeader oldNtHead->OptionalHeader.ImageBase = newNtHead->OptionalHeader.ImageBase; oldNtHead->OptionalHeader.SizeOfImage = newNtHead->OptionalHeader.SizeOfImage; oldNtHead->OptionalHeader.BaseOfCode = newNtHead->OptionalHeader.BaseOfCode; oldNtHead->OptionalHeader.AddressOfEntryPoint = newNtHead->OptionalHeader.AddressOfEntryPoint; oldNtHead->OptionalHeader.SectionAlignment = newNtHead->OptionalHeader.SectionAlignment; oldNtHead->OptionalHeader.FileAlignment = newNtHead->OptionalHeader.SectionAlignment; //deleted in x64 PE #ifndef _WIN64 oldNtHead->OptionalHeader.BaseOfData = newNtHead->OptionalHeader.BaseOfData; #endif } bool PeDump::saveDumpToDisk(const WCHAR * dumpFilePath, BYTE *dumpBuffer, DWORD dumpSize) { DWORD lpNumberOfBytesWritten = 0; bool retValue = false; HANDLE hFile = CreateFile(dumpFilePath, GENERIC_WRITE, FILE_SHARE_WRITE, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); if(hFile == INVALID_HANDLE_VALUE) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"saveDumpToDisk :: INVALID_HANDLE_VALUE %u", GetLastError()); #endif retValue = false; } else { if (WriteFile(hFile, dumpBuffer, dumpSize, &lpNumberOfBytesWritten, 0)) { if (lpNumberOfBytesWritten != dumpSize) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"saveDumpToDisk :: lpNumberOfBytesWritten != dumpSize %d %d", lpNumberOfBytesWritten,dumpSize); #endif retValue = false; } else { retValue = true; } } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"saveDumpToDisk :: WriteFile failed %u",GetLastError()); #endif retValue = false; } CloseHandle(hFile); } return retValue; } bool PeDump::getOverlayData(const WCHAR * filepath, DWORD_PTR * overlayFileOffset, DWORD * overlaySize) { LONGLONG fileSize = 0; - DWORD dwSize = 0; - DWORD bufferSize = 1000; - BYTE *buffer = 0; - bool returnValue = 0; - PIMAGE_DOS_HEADER pDOSh = 0; - PIMAGE_NT_HEADERS pNTh = 0; - PIMAGE_SECTION_HEADER pSech = 0; - int counter = 0; + bool returnValue = false; DWORD calcSize = 0; - HANDLE hFile = CreateFile(filepath, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); + PeParser peFile(filepath); - if( hFile == INVALID_HANDLE_VALUE ) + if (peFile.isValidPeFile()) { -#ifdef DEBUG_COMMENTS - Scylla::debugLog.log(L"getOverlayData :: INVALID_HANDLE_VALUE %u", GetLastError()); -#endif - returnValue = false; - } - else - { - fileSize = ProcessAccessHelp::getFileSize(hFile); + fileSize = ProcessAccessHelp::getFileSize(fullpath); if (fileSize > 0) { - if (fileSize > bufferSize) - { - dwSize = bufferSize; - } - else - { - dwSize = (DWORD)(fileSize - 1); - } + calcSize = peFile.getSectionHeaderBasedFileSize(); - buffer = new BYTE[dwSize]; - - if (ProcessAccessHelp::readMemoryFromFile(hFile, 0, dwSize, buffer)) + if (calcSize < fileSize) { - pDOSh = (PIMAGE_DOS_HEADER)buffer; - pNTh = (PIMAGE_NT_HEADERS)((DWORD_PTR)buffer + pDOSh->e_lfanew); - - //first section - pSech = IMAGE_FIRST_SECTION(pNTh); - counter = 1; - - //get last section - while(counter < pNTh->FileHeader.NumberOfSections) - { - counter++; - pSech++; - } - - //printf("PointerToRawData %X\nSizeOfRawData %X\nfile size %X\n",pSech->PointerToRawData,pSech->SizeOfRawData,pSech->PointerToRawData+pSech->SizeOfRawData); - - calcSize = pSech->PointerToRawData + pSech->SizeOfRawData; - - if (calcSize < fileSize) - { - //overlay found - *overlayFileOffset = calcSize; - *overlaySize = (DWORD)(fileSize - calcSize); - } - else - { - *overlayFileOffset = 0; - *overlaySize = 0; - } - - returnValue = true; + //overlay found + *overlayFileOffset = calcSize; + *overlaySize = (DWORD)(fileSize - calcSize); } else { - returnValue = false; + *overlayFileOffset = 0; + *overlaySize = 0; } - delete [] buffer; - } - else - { - returnValue = false; + returnValue = true; } - CloseHandle(hFile); } return returnValue; } \ No newline at end of file diff --git a/Scylla/PeParser.cpp b/Scylla/PeParser.cpp index 180d542..d29dbb2 100644 --- a/Scylla/PeParser.cpp +++ b/Scylla/PeParser.cpp @@ -1,298 +1,410 @@ #include "PeParser.h" +#include "ProcessAccessHelp.h" +PeParser::PeParser() +{ + fileMemory = 0; + headerMemory = 0; + pDosHeader = 0; + pNTHeader32 = 0; + pNTHeader64 = 0; + filename = 0; + moduleBaseAddress = 0; +} PeParser::PeParser(const WCHAR * file, bool readSectionHeaders) { fileMemory = 0; headerMemory = 0; pDosHeader = 0; pNTHeader32 = 0; pNTHeader64 = 0; + moduleBaseAddress = 0; filename = file; - if (wcslen(filename) > 3) + if (filename && wcslen(filename) > 3) { - readPeHeader(readSectionHeaders); + readPeHeaderFromFile(readSectionHeaders); if (readSectionHeaders) { if (isValidPeFile()) { getSectionHeaders(); } } } } +PeParser::PeParser(const DWORD_PTR moduleBase, bool readSectionHeaders) +{ + fileMemory = 0; + headerMemory = 0; + pDosHeader = 0; + pNTHeader32 = 0; + pNTHeader64 = 0; + filename = 0; + + moduleBaseAddress = moduleBase; + + if (moduleBaseAddress) + { + readPeHeaderFromProcess(readSectionHeaders); + + if (readSectionHeaders) + { + if (isValidPeFile()) + { + getSectionHeaders(); + } + } + } + +} + PeParser::~PeParser() { if (headerMemory) { delete [] headerMemory; } if (fileMemory) { delete [] fileMemory; } listSectionHeaders.clear(); } bool PeParser::isPE64() { if (isValidPeFile()) { return (pNTHeader32->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC); } else { return false; } } bool PeParser::isPE32() { if (isValidPeFile()) { return (pNTHeader32->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC); } else { return false; } } bool PeParser::isTargetFileSamePeFormat() { #ifdef _WIN64 return isPE64(); #else return isPE32(); #endif } bool PeParser::isValidPeFile() { bool retValue = false; if (pDosHeader) { if (pDosHeader->e_magic == IMAGE_DOS_SIGNATURE) { if (pNTHeader32) { if (pNTHeader32->Signature == IMAGE_NT_SIGNATURE) { retValue = true; } } } } return retValue; } bool PeParser::hasDirectory(const int directoryIndex) { if (isPE32()) { return (pNTHeader32->OptionalHeader.DataDirectory[directoryIndex].VirtualAddress != 0); } else if (isPE64()) { return (pNTHeader64->OptionalHeader.DataDirectory[directoryIndex].VirtualAddress != 0); } else { return false; } } bool PeParser::hasExportDirectory() { return hasDirectory(IMAGE_DIRECTORY_ENTRY_EXPORT); } bool PeParser::hasTLSDirectory() { return hasDirectory(IMAGE_DIRECTORY_ENTRY_TLS); } bool PeParser::hasRelocationDirectory() { return hasDirectory(IMAGE_DIRECTORY_ENTRY_BASERELOC); } DWORD PeParser::getEntryPoint() { if (isPE32()) { return pNTHeader32->OptionalHeader.AddressOfEntryPoint; } else if (isPE64()) { return pNTHeader64->OptionalHeader.AddressOfEntryPoint; } else { return 0; } } -bool PeParser::readPeHeader(bool readSectionHeaders) +bool PeParser::readPeHeaderFromProcess(bool readSectionHeaders) { bool retValue = false; - DWORD readSize = sizeof(IMAGE_DOS_HEADER) + 200 + sizeof(IMAGE_NT_HEADERS64); DWORD correctSize = 0; - DWORD numberOfBytesRead = 0; - if (readSectionHeaders) + DWORD readSize = getInitialHeaderReadSize(readSectionHeaders); + + headerMemory = new BYTE[readSize]; + + if (ProcessAccessHelp::readMemoryPartlyFromProcess(moduleBaseAddress, readSize, headerMemory)) { - readSize += (10 * sizeof(IMAGE_SECTION_HEADER)); + retValue = true; + + getDosAndNtHeader(headerMemory, (LONG)readSize); + + if (isValidPeFile()) + { + correctSize = calcCorrectPeHeaderSize(readSectionHeaders); + + if (readSize < correctSize) + { + readSize = correctSize; + delete [] headerMemory; + headerMemory = new BYTE[readSize]; + + if (ProcessAccessHelp::readMemoryPartlyFromProcess(moduleBaseAddress, readSize, headerMemory)) + { + getDosAndNtHeader(headerMemory, (LONG)readSize); + } + } + } } + return retValue; +} + +bool PeParser::readPeHeaderFromFile(bool readSectionHeaders) +{ + bool retValue = false; + DWORD correctSize = 0; + DWORD numberOfBytesRead = 0; + + DWORD readSize = getInitialHeaderReadSize(readSectionHeaders); + headerMemory = new BYTE[readSize]; HANDLE hFile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); if (hFile != INVALID_HANDLE_VALUE) { if (ReadFile(hFile, headerMemory, readSize, &numberOfBytesRead, 0)) { retValue = true; - pDosHeader = (PIMAGE_DOS_HEADER)headerMemory; - if (pDosHeader->e_lfanew > 0 && pDosHeader->e_lfanew < (LONG)readSize) //malformed PE - { - pNTHeader32 = (PIMAGE_NT_HEADERS32)((DWORD_PTR)pDosHeader + pDosHeader->e_lfanew); - pNTHeader64 = (PIMAGE_NT_HEADERS64)((DWORD_PTR)pDosHeader + pDosHeader->e_lfanew); - } + getDosAndNtHeader(headerMemory, (LONG)readSize); if (isValidPeFile()) { - correctSize = pDosHeader->e_lfanew + 50; //extra buffer - - if (readSectionHeaders) - { - correctSize += getNumberOfSections() * sizeof(IMAGE_SECTION_HEADER); - } - - if (isPE32()) - { - correctSize += sizeof(IMAGE_NT_HEADERS32); - } - else if(isPE64()) - { - correctSize += sizeof(IMAGE_NT_HEADERS64); - } - else - { - correctSize = 0; //not valid pe - } + correctSize = calcCorrectPeHeaderSize(readSectionHeaders); if (readSize < correctSize) { readSize = correctSize; delete [] headerMemory; headerMemory = new BYTE[readSize]; SetFilePointer(hFile, 0, 0, FILE_BEGIN); - if (ReadFile(hFile,headerMemory,readSize,&numberOfBytesRead,0)) + if (ReadFile(hFile, headerMemory, readSize, &numberOfBytesRead, 0)) { - pDosHeader = (PIMAGE_DOS_HEADER)headerMemory; - if (pDosHeader->e_lfanew > 0 && pDosHeader->e_lfanew < (LONG)readSize) //malformed PE - { - pNTHeader32 = (PIMAGE_NT_HEADERS32)((DWORD_PTR)pDosHeader + pDosHeader->e_lfanew); - pNTHeader64 = (PIMAGE_NT_HEADERS64)((DWORD_PTR)pDosHeader + pDosHeader->e_lfanew); - } + getDosAndNtHeader(headerMemory, (LONG)readSize); } } } } CloseHandle(hFile); } return retValue; } bool PeParser::readFileToMemory() { bool retValue = false; DWORD numberOfBytesRead = 0; LARGE_INTEGER largeInt = {0}; const DWORD MaxFileSize = 500 * 1024 * 1024; // GB * MB * KB * B -> 500 MB HANDLE hFile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0); if (hFile != INVALID_HANDLE_VALUE) { if (GetFileSizeEx(hFile, &largeInt)) { if (largeInt.QuadPart > MaxFileSize) { //TODO handle big files retValue = false; } else { fileMemory = new BYTE[largeInt.LowPart]; if (ReadFile(hFile,fileMemory,largeInt.LowPart,&numberOfBytesRead,0)) { retValue = true; } else { delete [] fileMemory; fileMemory = 0; } } } CloseHandle(hFile); } return retValue; } bool PeParser::getSectionHeaders() { PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pNTHeader32); listSectionHeaders.clear(); listSectionHeaders.reserve(getNumberOfSections()); for (WORD i = 0; i < getNumberOfSections(); i++) { listSectionHeaders.push_back(*pSection); pSection++; } return true; } -bool PeParser::getSectionNameUnicode(const int sectionIndex, WCHAR * output, int outputLen) +bool PeParser::getSectionNameUnicode(const int sectionIndex, WCHAR * output, const int outputLen) { CHAR sectionNameA[IMAGE_SIZEOF_SHORT_NAME + 1] = {0}; output[0] = 0; - memcpy(sectionNameA, listSectionHeaders[sectionIndex].Name, IMAGE_SIZEOF_SHORT_NAME); + memcpy(sectionNameA, listSectionHeaders[sectionIndex].Name, IMAGE_SIZEOF_SHORT_NAME); //not null terminated return (swprintf_s(output, outputLen, L"%S", sectionNameA) != -1); } WORD PeParser::getNumberOfSections() { return pNTHeader32->FileHeader.NumberOfSections; } std::vector & PeParser::getSectionHeaderList() { return listSectionHeaders; } +void PeParser::getDosAndNtHeader(BYTE * memory, LONG size) +{ + pDosHeader = (PIMAGE_DOS_HEADER)memory; + + if (pDosHeader->e_lfanew > 0 && pDosHeader->e_lfanew < size) //malformed PE + { + pNTHeader32 = (PIMAGE_NT_HEADERS32)((DWORD_PTR)pDosHeader + pDosHeader->e_lfanew); + pNTHeader64 = (PIMAGE_NT_HEADERS64)((DWORD_PTR)pDosHeader + pDosHeader->e_lfanew); + } + else + { + pNTHeader32 = 0; + pNTHeader64 = 0; + } +} + +DWORD PeParser::calcCorrectPeHeaderSize(bool readSectionHeaders) +{ + DWORD correctSize = pDosHeader->e_lfanew + 50; //extra buffer + + if (readSectionHeaders) + { + correctSize += getNumberOfSections() * sizeof(IMAGE_SECTION_HEADER); + } + + if (isPE32()) + { + correctSize += sizeof(IMAGE_NT_HEADERS32); + } + else if(isPE64()) + { + correctSize += sizeof(IMAGE_NT_HEADERS64); + } + else + { + correctSize = 0; //not a valid PE + } + + return correctSize; +} + +DWORD PeParser::getInitialHeaderReadSize(bool readSectionHeaders) +{ + DWORD readSize = sizeof(IMAGE_DOS_HEADER) + 200 + sizeof(IMAGE_NT_HEADERS64); + + if (readSectionHeaders) + { + readSize += (10 * sizeof(IMAGE_SECTION_HEADER)); + } + + return readSize; +} + +DWORD PeParser::getSectionHeaderBasedFileSize() +{ + DWORD lastRawOffset = 0, lastRawSize = 0; + + //this is needed if the sections aren't sorted by their RawOffset (e.g. Petite) + for (WORD i = 0; i < getNumberOfSections(); i++) + { + if (listSectionHeaders[i].PointerToRawData > lastRawOffset) + { + lastRawOffset = listSectionHeaders[i].PointerToRawData; + lastRawSize = listSectionHeaders[i].SizeOfRawData; + } + } + + return (lastRawSize + lastRawOffset); +} + diff --git a/Scylla/PeParser.h b/Scylla/PeParser.h index 86b5c12..0512d8a 100644 --- a/Scylla/PeParser.h +++ b/Scylla/PeParser.h @@ -1,50 +1,58 @@ #pragma once #include #include class PeParser { public: PeParser(const WCHAR * file, bool readSectionHeaders = true); - //PeParser(HANDLE hProcess, DWORD_PTR moduleBase, bool readSectionHeaders = true); + PeParser(const DWORD_PTR moduleBase, bool readSectionHeaders = true); ~PeParser(); bool isValidPeFile(); bool isPE64(); bool isPE32(); bool isTargetFileSamePeFormat(); WORD getNumberOfSections(); std::vector & getSectionHeaderList(); bool hasExportDirectory(); bool hasTLSDirectory(); bool hasRelocationDirectory(); DWORD getEntryPoint(); - bool getSectionNameUnicode(const int sectionIndex, WCHAR * output, int outputLen); + bool getSectionNameUnicode(const int sectionIndex, WCHAR * output, const int outputLen); + + DWORD getSectionHeaderBasedFileSize(); private: + PeParser(); + const WCHAR * filename; + DWORD_PTR moduleBaseAddress; PIMAGE_DOS_HEADER pDosHeader; PIMAGE_NT_HEADERS32 pNTHeader32; PIMAGE_NT_HEADERS64 pNTHeader64; std::vector listSectionHeaders; BYTE * fileMemory; BYTE * headerMemory; - bool readPeHeader(bool readSectionHeaders); + bool readPeHeaderFromFile(bool readSectionHeaders); + bool readPeHeaderFromProcess(bool readSectionHeaders); bool readFileToMemory(); bool hasDirectory(const int directoryIndex); bool getSectionHeaders(); - bool readPeHeaderFromProcess( HANDLE hProcess, DWORD_PTR moduleBase ); + void getDosAndNtHeader(BYTE * memory, LONG size); + DWORD calcCorrectPeHeaderSize( bool readSectionHeaders ); + DWORD getInitialHeaderReadSize( bool readSectionHeaders ); }; diff --git a/Scylla/PluginLoader.cpp b/Scylla/PluginLoader.cpp index ac0c3aa..c935a50 100644 --- a/Scylla/PluginLoader.cpp +++ b/Scylla/PluginLoader.cpp @@ -1,326 +1,303 @@ #include "PluginLoader.h" #include "Logger.h" #include "ProcessAccessHelp.h" #include "StringConversion.h" #include #include "PeParser.h" const WCHAR PluginLoader::PLUGIN_DIR[] = L"Plugins\\"; const WCHAR PluginLoader::PLUGIN_SEARCH_STRING[] = L"*.dll"; const WCHAR PluginLoader::PLUGIN_IMPREC_DIR[] = L"ImpRec_Plugins\\"; const WCHAR PluginLoader::PLUGIN_IMPREC_WRAPPER_DLL[] = L"Imprec_Wrapper_DLL.dll"; //#define DEBUG_COMMENTS std::vector & PluginLoader::getScyllaPluginList() { return scyllaPluginList; } std::vector & PluginLoader::getImprecPluginList() { return imprecPluginList; } bool PluginLoader::findAllPlugins() { if (!scyllaPluginList.empty()) { scyllaPluginList.clear(); } if (!imprecPluginList.empty()) { imprecPluginList.clear(); } if (!buildSearchString()) { return false; } if (!searchForPlugin(scyllaPluginList, dirSearchString, true)) { return false; } #ifndef _WIN64 if (!buildSearchStringImprecPlugins()) { return false; } if (!searchForPlugin(imprecPluginList, dirSearchString, false)) { return false; } #endif return true; } bool PluginLoader::searchForPlugin(std::vector & newPluginList, const WCHAR * searchPath, bool isScyllaPlugin) { WIN32_FIND_DATA ffd; HANDLE hFind = 0; DWORD dwError = 0; Plugin pluginData; hFind = FindFirstFile(searchPath, &ffd); dwError = GetLastError(); if (dwError == ERROR_FILE_NOT_FOUND) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"findAllPlugins :: No files found"); #endif return true; } if (hFind == INVALID_HANDLE_VALUE) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"findAllPlugins :: FindFirstFile failed %d", dwError); #endif return false; } do { if ( !(ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ) { if ((ffd.nFileSizeHigh != 0) || (ffd.nFileSizeLow < 200)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"findAllPlugins :: Plugin invalid file size: %s", ffd.cFileName); #endif } else { pluginData.fileSize = ffd.nFileSizeLow; wcscpy_s(pluginData.fullpath, baseDirPath); wcscat_s(pluginData.fullpath, ffd.cFileName); #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"findAllPlugins :: Plugin %s", pluginData.fullpath); #endif if (isValidDllFile(pluginData.fullpath)) { if (isScyllaPlugin) { if (getScyllaPluginName(&pluginData)) { //add valid plugin newPluginList.push_back(pluginData); } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"Cannot get scylla plugin name %s", pluginData.fullpath); #endif } } else { if (isValidImprecPlugin(pluginData.fullpath)) { wcscpy_s(pluginData.pluginName, ffd.cFileName); newPluginList.push_back(pluginData); } } } } } } while (FindNextFile(hFind, &ffd) != 0); dwError = GetLastError(); FindClose(hFind); - if (dwError == ERROR_NO_MORE_FILES) - { - return true; - } - else - { - return false; - } - + return (dwError == ERROR_NO_MORE_FILES); } bool PluginLoader::getScyllaPluginName(Plugin * pluginData) { bool retValue = false; char * pluginName = 0; def_ScyllaPluginNameW ScyllaPluginNameW = 0; def_ScyllaPluginNameA ScyllaPluginNameA = 0; HMODULE hModule = LoadLibraryEx(pluginData->fullpath, 0, DONT_RESOLVE_DLL_REFERENCES); //do not call DllMain if (hModule) { ScyllaPluginNameW = (def_ScyllaPluginNameW)GetProcAddress(hModule, "ScyllaPluginNameW"); if (ScyllaPluginNameW) { wcscpy_s(pluginData->pluginName, ScyllaPluginNameW()); #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getPluginName :: Plugin name %s", pluginData->pluginName); #endif retValue = true; } else { ScyllaPluginNameA = (def_ScyllaPluginNameA)GetProcAddress(hModule, "ScyllaPluginNameA"); if (ScyllaPluginNameA) { pluginName = ScyllaPluginNameA(); StringConversion::ToUTF16(pluginName, pluginData->pluginName, _countof(pluginData->pluginName)); #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getPluginName :: Plugin name mbstowcs_s %s", pluginData->pluginName); #endif if (wcslen(pluginData->pluginName) > 1) { retValue = true; } - else - { - retValue = false; - } - } - else - { - retValue = false; } } FreeLibrary(hModule); return retValue; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getPluginName :: LoadLibraryEx failed %s", pluginData->fullpath); #endif return false; } } bool PluginLoader::buildSearchString() { ZeroMemory(dirSearchString, sizeof(dirSearchString)); ZeroMemory(baseDirPath, sizeof(baseDirPath)); if (!GetModuleFileName(0, dirSearchString, _countof(dirSearchString))) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"buildSearchString :: GetModuleFileName failed %d", GetLastError()); #endif return false; } //wprintf(L"dirSearchString 1 %s\n\n", dirSearchString); PathRemoveFileSpec(dirSearchString); //wprintf(L"dirSearchString 2 %s\n\n", dirSearchString); PathAppend(dirSearchString, PLUGIN_DIR); wcscpy_s(baseDirPath, dirSearchString); wcscat_s(dirSearchString, PLUGIN_SEARCH_STRING); //wprintf(L"dirSearchString 3 %s\n\n", dirSearchString); #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"dirSearchString final %s", dirSearchString); #endif return true; } bool PluginLoader::isValidDllFile( const WCHAR * fullpath ) { - PeParser peFile(fullpath,false); + PeParser peFile(fullpath, false); - if (peFile.isTargetFileSamePeFormat() && peFile.hasExportDirectory()) - { - return true; - } - else - { - return false; - } + return (peFile.isTargetFileSamePeFormat() && peFile.hasExportDirectory()); } bool PluginLoader::isValidImprecPlugin(const WCHAR * fullpath) { def_Imprec_Trace Imprec_Trace = 0; bool retValue = false; HMODULE hModule = LoadLibraryEx(fullpath, 0, DONT_RESOLVE_DLL_REFERENCES); //do not call DllMain if (hModule) { Imprec_Trace = (def_Imprec_Trace)GetProcAddress(hModule, "Trace"); if (Imprec_Trace) { retValue = true; } else { retValue = false; } FreeLibrary(hModule); return retValue; } else { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"isValidImprecPlugin :: LoadLibraryEx failed %s", pluginData->fullpath); #endif return false; } } bool PluginLoader::buildSearchStringImprecPlugins() { wcscpy_s(dirSearchString, baseDirPath); wcscat_s(dirSearchString, PLUGIN_IMPREC_DIR); wcscpy_s(baseDirPath, dirSearchString); //build imprec wrapper dll path wcscpy_s(imprecWrapperDllPath, dirSearchString); wcscat_s(imprecWrapperDllPath, PLUGIN_IMPREC_WRAPPER_DLL); if (!fileExists(imprecWrapperDllPath)) { return false; } wcscat_s(dirSearchString, PLUGIN_SEARCH_STRING); return true; } bool PluginLoader::fileExists(const WCHAR * fileName) { return (GetFileAttributesW(fileName) != INVALID_FILE_ATTRIBUTES); } diff --git a/Scylla/ProcessAccessHelp.cpp b/Scylla/ProcessAccessHelp.cpp index f7867f7..91aee0d 100644 --- a/Scylla/ProcessAccessHelp.cpp +++ b/Scylla/ProcessAccessHelp.cpp @@ -1,786 +1,785 @@ #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, 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() { 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::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 false; } } 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); - hFile = 0; } 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) && (hFile != 0)) { 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) { return writeMemoryToFile(hFile,0,size,dataBuffer); } 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) && (hFile != 0)) { 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(DWORD dwPID, std::vector &moduleList) { HANDLE hModuleSnap = INVALID_HANDLE_VALUE; MODULEENTRY32 me32; ModuleInfo module; // Take a snapshot of all modules in the specified process. hModuleSnap = CreateToolhelp32Snapshot( TH32CS_SNAPMODULE, dwPID ); if( hModuleSnap == INVALID_HANDLE_VALUE ) { return false; } // Set the size of the structure before using it. me32.dwSize = sizeof( MODULEENTRY32 ); // Retrieve information about the first module, // and exit if unsuccessful if( !Module32First( hModuleSnap, &me32 ) ) { CloseHandle( hModuleSnap ); return false; } // Now walk the module list of the process, // and display information about each module //the first is always the .exe if (!Module32Next(hModuleSnap, &me32)) { CloseHandle( hModuleSnap ); return false; } moduleList.reserve(20); do { //printf(L"\n MODULE NAME: %s", me32.szModule); module.modBaseAddr = (DWORD_PTR)me32.modBaseAddr; module.modBaseSize = me32.modBaseSize; module.isAlreadyParsed = false; module.parsing = false; wcscpy_s(module.fullPath, me32.szExePath); moduleList.push_back(module); } while(Module32Next(hModuleSnap, &me32)); CloseHandle( hModuleSnap ); return true; } 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; MEMORY_BASIC_INFORMATION lpBuffer = {0}; SIZE_T dwLength = sizeof(MEMORY_BASIC_INFORMATION); do { moduleBase = (DWORD_PTR)((SIZE_T)moduleBase + lpBuffer.RegionSize); sizeOfImage += lpBuffer.RegionSize; //printf("Query 0x"PRINTF_DWORD_PTR_FULL" size 0x%08X\n",moduleBase,sizeOfImage); if (!VirtualQueryEx(processHandle, (LPCVOID)moduleBase, &lpBuffer, dwLength)) { #ifdef DEBUG_COMMENTS Scylla::debugLog.log(L"getSizeOfImageProcess :: VirtualQuery failed %X", GetLastError()); #endif lpBuffer.Type = 0; sizeOfImage = 0; } /*else { printf("\nAllocationBase %X\n",lpBuffer.AllocationBase); printf("AllocationProtect %X\n",lpBuffer.AllocationProtect); printf("BaseAddress %X\n",lpBuffer.BaseAddress); printf("Protect %X\n",lpBuffer.Protect); printf("RegionSize %X\n",lpBuffer.RegionSize); printf("State %X\n",lpBuffer.State); printf("Type %X\n",lpBuffer.Type); }*/ } while (lpBuffer.Type == MEM_IMAGE); //printf("Real sizeOfImage %X\n",sizeOfImage); 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; }