Abusing callback to run shellcode.
Eksekusi shellcode dengan mmioInstallIOProc.
LPMMIOPROC mmioInstallIOProc (FOURCC fccIOProc, LPMMIOPROC pIOProc, DWORD dwFlags);
MCIERROR mciSendString (LPCTSTR lpszCommand, LPTSTR lpszReturnString, UINT cchReturn, HANDLE hwndCallback);