#include BOOL APIENTRY DllMain(HMODULE Base, DWORD Callback, LPVOID Param) { switch (Callback) { case DLL_PROCESS_ATTACH: break; case DLL_PROCESS_DETACH: break; default: break; } } extern "C" __declspec(dllexport) int FunEntry() { return MessageBoxA(0, "Hello from C2", 0, 0); }