//===============================================================================================//
// Loads a PE image from memory into the address space of a host process via the image's exported ReflectiveLoader function
// Note: You must compile whatever you are injecting with REFLECTIVEDLLINJECTION_VIA_LOADREMOTELIBRARYR
// defined in order to use the correct RDI prototypes.
// Note: The hProcess handle must have these access rights: PROCESS_CREATE_THREAD | PROCESS_QUERY_INFORMATION |
// PROCESS_VM_OPERATION | PROCESS_VM_WRITE | PROCESS_VM_READ
// Note: If you are passing in an lpParameter value, if it is a pointer, remember it is for a different address space.
// Note: This function currently cant inject accross architectures, but only to architectures which are the
// same as the arch this function is compiled as, e.g. x86->x86 and x64->x64 but not x64->x86 or x86->x64.
HANDLE WINAPI LoadRemoteLibraryR( HANDLE hProcess, LPVOID lpBuffer, DWORD dwLength, LPVOID lpParameter )
{
BOOL bSuccess = FALSE;
LPVOID lpRemoteLibraryBuffer = NULL;
LPTHREAD_START_ROUTINE lpReflectiveLoader = NULL;
HANDLE hThread = NULL;
DWORD dwReflectiveLoaderOffset = 0;
DWORD dwThreadId = 0;
__try
{
do
{
if( !hProcess || !lpBuffer || !dwLength )
break;
// check if the library has a ReflectiveLoader...
dwReflectiveLoaderOffset = GetReflectiveLoaderOffset( lpBuffer );
if( !dwReflectiveLoaderOffset )
break;
// alloc memory (RWX) in the host process for the image...
lpRemoteLibraryBuffer = VirtualAllocEx( hProcess, NULL, dwLength, MEM_RESERVE|MEM_COMMIT, PAGE_EXECUTE_READWRITE );
if( !lpRemoteLibraryBuffer )
break;
// write the image into the host process...
if( !WriteProcessMemory( hProcess, lpRemoteLibraryBuffer, lpBuffer, dwLength, NULL ) )
break;
// add the offset to ReflectiveLoader() to the remote library address...
lpReflectiveLoader = (LPTHREAD_START_ROUTINE)( (ULONG_PTR)lpRemoteLibraryBuffer + dwReflectiveLoaderOffset );
// create a remote thread in the host process to call the ReflectiveLoader!
hThread = CreateRemoteThread( hProcess, NULL, 1024*1024, lpReflectiveLoader, lpParameter, (DWORD)NULL, &dwThreadId );
} while( 0 );
}
__except( EXCEPTION_EXECUTE_HANDLER )
{
hThread = NULL;
}
return hThread;
}
//===============================================================================================//
// Loads a DLL image from memory via its exported ReflectiveLoader function
HMODULE WINAPI LoadLibraryR(LPVOID lpBuffer, DWORD dwLength)
{
HMODULE hResult = NULL;
DWORD dwReflectiveLoaderOffset = 0;
DWORD dwOldProtect1 = 0;
DWORD dwOldProtect2 = 0;
REFLECTIVELOADER pReflectiveLoader = NULL;
DLLMAIN pDllMain = NULL;
if (lpBuffer == NULL || dwLength == 0)
return NULL;
__try
{
// check if the library has a ReflectiveLoader...
dwReflectiveLoaderOffset = GetReflectiveLoaderOffset(lpBuffer);
if (dwReflectiveLoaderOffset != 0)
{
pReflectiveLoader = (REFLECTIVELOADER)((UINT_PTR)lpBuffer + dwReflectiveLoaderOffset);
// we must VirtualProtect the buffer to RWX so we can execute the ReflectiveLoader...
// this assumes lpBuffer is the base address of the region of pages and dwLength the size of the region
if (VirtualProtect(lpBuffer, dwLength, PAGE_EXECUTE_READWRITE, &dwOldProtect1))
{
// call the librarys ReflectiveLoader...
pDllMain = (DLLMAIN)pReflectiveLoader();
if (pDllMain != NULL)
{
// call the loaded librarys DllMain to get its HMODULE
// Dont call DLL_METASPLOIT_ATTACH/DLL_METASPLOIT_DETACH as that is for payloads only.
if (!pDllMain(NULL, DLL_QUERY_HMODULE, &hResult))
hResult = NULL;
}
// revert to the previous protection flags...
//VirtualProtect(lpBuffer, dwLength, dwOldProtect1, &dwOldProtect2);
}
}
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
hResult = NULL;
}
return hResult;
}
