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IATReferenceScan.h
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IATReferenceScan.h
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#pragma once
#include <vector>
#include "ProcessAccessHelp.h"
#include "PeParser.h"
#include "Logger.h"
#include "ApiReader.h"
enum IATReferenceType {
IAT_REFERENCE_PTR_JMP,
IAT_REFERENCE_PTR_CALL,
IAT_REFERENCE_DIRECT_JMP,
IAT_REFERENCE_DIRECT_CALL,
IAT_REFERENCE_DIRECT_MOV,
IAT_REFERENCE_DIRECT_PUSH,
IAT_REFERENCE_DIRECT_LEA
};
class IATReference
{
public:
DWORD_PTR addressVA; //Address of reference
DWORD_PTR targetPointer; //Place inside IAT
DWORD_PTR targetAddressInIat; //WIN API?
BYTE instructionSize;
IATReferenceType type;
};
class IATReferenceScan
{
public:
IATReferenceScan()
{
apiReader = 0;
IatAddressVA = 0;
IatSize = 0;
ImageBase = 0;
ImageSize = 0;
iatBackup = 0;
ScanForDirectImports = false;
ScanForNormalImports = true;
}
~IATReferenceScan()
{
iatReferenceList.clear();
iatDirectImportList.clear();
if (iatBackup)
{
free(iatBackup);
}
}
bool ScanForDirectImports;
bool ScanForNormalImports;
bool JunkByteAfterInstruction;
ApiReader * apiReader;
void startScan(DWORD_PTR imageBase, DWORD imageSize, DWORD_PTR iatAddress, DWORD iatSize);
//void patchNewIatBaseMemory(DWORD_PTR newIatBaseAddress);
//void patchNewIatBaseFile(DWORD_PTR newIatBaseAddress);
void patchNewIat(DWORD_PTR stdImagebase, DWORD_PTR newIatBaseAddress, PeParser * peParser);
void patchDirectJumpTable( DWORD_PTR imageBase, DWORD directImportsJumpTableRVA, PeParser * peParser, BYTE * jmpTableMemory, DWORD newIatBase);
void patchDirectImportsMemory(bool junkByteAfterInstruction);
int numberOfFoundDirectImports();
int numberOfFoundUniqueDirectImports();
int numberOfDirectImportApisNotInIat();
int getSizeInBytesOfJumpTableInSection();
static FileLog directImportLog;
void printDirectImportLog();
void changeIatBaseOfDirectImports( DWORD newIatBaseAddressRVA );
DWORD addAdditionalApisToList();
private:
DWORD_PTR NewIatAddressRVA;
DWORD_PTR IatAddressVA;
DWORD IatSize;
DWORD_PTR ImageBase;
DWORD ImageSize;
DWORD_PTR * iatBackup;
std::vector<IATReference> iatReferenceList;
std::vector<IATReference> iatDirectImportList;
void scanMemoryPage( PVOID BaseAddress, SIZE_T RegionSize );
void analyzeInstruction( _DInst * instruction );
void findNormalIatReference( _DInst * instruction );
void getIatEntryAddress( IATReference* ref );
void findDirectIatReferenceCallJmp( _DInst * instruction );
bool isAddressValidImageMemory( DWORD_PTR address );
void patchReferenceInMemory( IATReference * ref );
void patchReferenceInFile( IATReference* ref );
void patchDirectImportInMemory( IATReference * iter );
DWORD_PTR lookUpIatForPointer( DWORD_PTR addr );
void findDirectIatReferenceMov( _DInst * instruction );
void findDirectIatReferencePush( _DInst * instruction );
void checkMemoryRangeAndAddToList( IATReference * ref, _DInst * instruction );
void findDirectIatReferenceLea( _DInst * instruction );
void patchDirectImportInDump32( int patchPreFixBytes, int instructionSize, DWORD patchBytes, BYTE * memory, DWORD memorySize, bool generateReloc, DWORD patchOffset, DWORD sectionRVA );
void patchDirectImportInDump64( int patchPreFixBytes, int instructionSize, DWORD_PTR patchBytes, BYTE * memory, DWORD memorySize, bool generateReloc, DWORD patchOffset, DWORD sectionRVA );
void patchDirectJumpTableEntry(DWORD_PTR targetIatPointer, DWORD_PTR stdImagebase, DWORD directImportsJumpTableRVA, PeParser * peParser, BYTE * jmpTableMemory, DWORD newIatBase );
};
/*
PE64
----------
000000013FF82D87 FF15 137C0A00 CALL QWORD [RIP+0xA7C13]
Result: 000000014002A9A0
000000013F65C952 FF25 F8EA0B00 JMP QWORD [RIP+0xBEAF8]
Result: 000000013F71B450
PE32
----------
0120FFA5 FF15 8C6D2601 CALL DWORD [0x01266D8C]
0120FF52 FF25 D4722601 JMP DWORD [0x012672D4]
*/

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Tue, Feb 10, 12:43 PM (1 d, 16 h)
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Storage Handle
f4/3c/a34fab6df6252a5adfdd01e0ddf3

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