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Create GetProcAddressSuperFastHash.cpp

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vxunderground
2022-07-15 12:53:28 -05:00
committed by GitHub
parent ad143c940f
commit 92f1de7ddb
1 changed files with 26 additions and 0 deletions
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Windows API/Library Loading/GetProcAddressSuperFastHash.cpp
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DWORD64 __stdcall GetProcAddressSuperFastHash(DWORD64 ModuleBase, DWORD64 Hash)
{
PBYTE pFunctionName;
PIMAGE_DOS_HEADER Dos;
PIMAGE_NT_HEADERS Nt;
PIMAGE_FILE_HEADER File;
PIMAGE_OPTIONAL_HEADER Optional;
RtlLoadPeHeaders(&Dos, &Nt, &File, &Optional, (PBYTE*)&ModuleBase);
IMAGE_EXPORT_DIRECTORY* ExportTable = (PIMAGE_EXPORT_DIRECTORY)(ModuleBase + Optional->DataDirectory[0].VirtualAddress);
PDWORD FunctionNameAddressArray = (PDWORD)((LPBYTE)ModuleBase + ExportTable->AddressOfNames);
PDWORD FunctionAddressArray = (PDWORD)((LPBYTE)ModuleBase + ExportTable->AddressOfFunctions);
PWORD FunctionOrdinalAddressArray = (PWORD)((LPBYTE)ModuleBase + ExportTable->AddressOfNameOrdinals);
for (DWORD dwX = 0; dwX < ExportTable->NumberOfNames; dwX++)
{
pFunctionName = FunctionNameAddressArray[dwX] + (PBYTE)ModuleBase;
DWORD dwFunctionHash = HashStringSuperFastHashA((PCHAR)pFunctionName);
if (Hash == dwFunctionHash)
return ((DWORD64)ModuleBase + FunctionAddressArray[FunctionOrdinalAddressArray[dwX]]);
}
return 0;
}