//shellcode spawns a MessageBox, then exits process. made with msf
unsigned char buf[] = 
"\xd9\xeb\x9b\xd9\x74\x24\xf4\x31\xd2\xb2\x77\x31\xc9\x64"
"\x8b\x71\x30\x8b\x76\x0c\x8b\x76\x1c\x8b\x46\x08\x8b\x7e"
"\x20\x8b\x36\x38\x4f\x18\x75\xf3\x59\x01\xd1\xff\xe1\x60"
"\x8b\x6c\x24\x24\x8b\x45\x3c\x8b\x54\x28\x78\x01\xea\x8b"
"\x4a\x18\x8b\x5a\x20\x01\xeb\xe3\x34\x49\x8b\x34\x8b\x01"
"\xee\x31\xff\x31\xc0\xfc\xac\x84\xc0\x74\x07\xc1\xcf\x0d"
"\x01\xc7\xeb\xf4\x3b\x7c\x24\x28\x75\xe1\x8b\x5a\x24\x01"
"\xeb\x66\x8b\x0c\x4b\x8b\x5a\x1c\x01\xeb\x8b\x04\x8b\x01"
"\xe8\x89\x44\x24\x1c\x61\xc3\xb2\x08\x29\xd4\x89\xe5\x89"
"\xc2\x68\x8e\x4e\x0e\xec\x52\xe8\x9f\xff\xff\xff\x89\x45"
"\x04\xbb\x7e\xd8\xe2\x73\x87\x1c\x24\x52\xe8\x8e\xff\xff"
"\xff\x89\x45\x08\x68\x6c\x6c\x20\x41\x68\x33\x32\x2e\x64"
"\x68\x75\x73\x65\x72\x30\xdb\x88\x5c\x24\x0a\x89\xe6\x56"
"\xff\x55\x04\x89\xc2\x50\xbb\xa8\xa2\x4d\xbc\x87\x1c\x24"
"\x52\xe8\x5f\xff\xff\xff\x68\x6f\x78\x58\x20\x68\x61\x67"
"\x65\x42\x68\x4d\x65\x73\x73\x31\xdb\x88\x5c\x24\x0a\x89"
"\xe3\x68\x64\x21\x58\x20\x68\x70\x77\x6e\x65\x31\xc9\x88"
"\x4c\x24\x06\x89\xe1\x31\xd2\x52\x53\x51\x52\xff\xd0\x31"
"\xc0\x50\xff\x55\x08";