Monday, February 18, 2013

Blind SQLi Detection and How to Inject it

Hello all,

So, today I want to share with you guys on how to detect if the website is vulnerable to Blind SQLi or not.
Before, do note that I'm not an expert in this security/hacking scene. This sharing based on my own understanding from articles/discussions among of these great people

  • Mario Heiderich
  • Miroslav Stampar 
  • R4x0r4x
  • Nurfed
  • Reiners
  • benzi
  • and more :)
In this article, I'll use OWASP Broken Web Applications Project as example. You guys can get it Here. Hope you guys already have a basic in SQLi so this wont be hard on you guys :
Ok lets move on.
In Blind SQLi, we need to understand correctly on how the server/website response based on TRUE or FALSE condition.There are 2 ways (afaik based on my knowledge) to detect it.

  1. Quotes
It can be either single quote (') , double quotes (")  or backtick ( ` )
Refer example below.


A normal page condition ( TRUE condition )

The page become blank (FALSE condition) once we put a single quote

The page back to normal condition (TRUE) once we put another single quote.
We can use these method as well to check the TRUE/FALSE condition under this way of detection.

    2. Numeric Operators
 Use a simple math! Check the example shown below where pic_id is vulnerable to SQLi

Normal page loaded. Because the condition is true. 1=1 is TRUE

The admin word is missing. This shows a FALSE condition since 1=2 is FALSE.
Another way is by using simple calculation. The current page loaded fine on pic_id=13.

The page loaded fine but it shows another page. This is because we added 1 in the pic_id where it'll become 13+1=14 so the page will loaded the pic_id=14

Here are some other method under this technique.

So, how are we going to proceed with our Blind SQLi?
Each dbms have a different techniques but quite similar. In this article, I'll show some common technique used in MySQL dbms.

i. Common technique
id=1 and 1=1
id=1 and (put our sql query here)=(put our expectation here)
as  example we want to query the current version,
id=1 and substring(@@version,1,1)=4
so, if the current MySQL version used by the website started with 4 the page will load fine (TRUE condition) else the page will be error/blank (FALSE condition)

Example shown below.
Testing if the MySQL used is version 4.*. Page error,shows that the website is not using that version.

Testing if the MySQL used is version 5.*. Page loaded fine,shows the current version used is 5.*


ii. Using a Case statement
id=1 and 1
id=1 and (CASE when (our sql query here) THEN 1 else 0 END)
If the query is TRUE,it'll resulting 1 where 1 is TRUE condition. Else, it'll resulting 0 where 0 is FALSE condition.

1=2 is wrong,so it'll resulting 0,FALSE.
1=1 is correct,so it'll resulting 1,TRUE.

iii. Time Based
Yup,this is another technique of Blind SQLi based on the server time response.
This technique already explained in my previous post here

and there are more techniques in SQLi out there. Do have some read and research on them as well. You might find a new way on exploiting, who knows right? :D

That's all guys! Hope this article can help you guys a little bit. I'm sorry if the article is not meet your expectation. Tried my best! -__-"

Thanks,
@yappare




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Sunday, February 17, 2013

Shit Bypasser

Tired with those short URL when downloading part by part?!
Here's a nice bypasser made by Shahril and Munajaf from Tbd.my


<?php
/*
* Rebuild by Shahril and Munajaf
* Learning Regex trololololo
* Coded By Shahril 
* Styled, Cut,Paste every random shit by Munajaf
* Some Shit From http://pastebin.com/7aE0ZCYk
*
* 1.0 - adf.ly,q.gs,linkbucks,tinybucks,urlcash,lix.in,anonym.to, adik beradik goo.gl pn bole!
*     - Example1 : http://lix.in/-ceec7a
*       - Example2 : http://goo.gl/e4SPw
*
* 1.1 - added anonymz.com,adfoc.us some bug fix
*     - http://adfoc.us/x19219978
*     - http://www.anonymz.com/?http://google.com/
*
*
* 1.0 - 15/2/2013
* 1.1 - 17/2/2013
*
* 
*/

$CounT = true; //set this to true if you want it to count the link have been skiped, " else " put it false
if(!file_exists('link.txt'))
{
    fwrite(fopen('link.txt','w'), "0");
}

if(!in_array("curl", @get_loaded_extensions()))
{
    die('Curl Is Not Supported!');
}

?>
<title>Random Shit Bypasser 1.1</title>
<style>
@import url(http://fonts.googleapis.com/css?family=Fredoka+One);@import url(http://fonts.googleapis.com/css?family=Alike);
body {background:url('http://goo.gl/ZHzmP'); font: 75%/170% Arial, Helvetica, sans-serif;}
a:visited {COLOR: #0066cc;text-decoration: none;cursor:pointer;}
a:link {COLOR: rgb(6, 118, 146);text-decoration: none;cursor:pointer;}
textarea{font-family: 'Fredoka One', cursive;font-weight:200;font-size: 14px;padding:5px;box-shadow: rgba(255, 255, 255, .75) 0px 0px 9px 1px;background-color:rgba(0, 0, 0, .25);    color: rgb(6, 118, 146);;border-radius:5px;height: 198px; width: 887px;margin-top: 20px;margin-bottom: 5px;}
.link{font-size:12px;}
.shittendstohappen{font-size:12px; color:red}
.head{color: #FFF;font-family: 'Fredoka One', cursive;font-size: 50px;font-weight:400;}
.foot{font-family: 'Fredoka One', cursive;padding: 2px;border-top: 1px solid #EBEBEB;background-color: #FFF;bottom:0;position:fixed;width:100%;height: 20px;font-size: 15px;}
.number{ font-size:15px; color:#fff;}
.button {display: inline;position: relative;font-size: 15px;font-weight: bold;text-align: center;text-decoration: none;color: white;border-radius: 5px;padding: 14px 80px;}
.bypass {margin: 20px;background-color: #333;text-shadow: 0 -1px -1px #1B3D82;}
.bypass:hover {background-color: rgb(6, 118, 146);box-shadow: rgba(255, 255, 255, .75) 0px 0px 9px 1px;}
</style>
<?php
echo '<center><br /><br />
<div class="head">Random Shit Bypasser</div> <br /> <br />
<form method="post">
<textarea name="urllist">'.htmlspecialchars($_POST['urllist'], ENT_QUOTES).'</textarea>
<br />
<input type=submit name="sub" class="button bypass" value="Bypass"/>
</form><br />';


if(isset($_POST['urllist']) && !empty($_POST['urllist'])){
    $array = array();
    $i = 1;
    $_POST['urllist'] = str_replace("\r", "", html_entity_decode($_POST['urllist']));
    $list = explode("\n", $_POST['urllist']);
    echo '<table border="1">';
    echo '<tr><th><font color="#fff">No .</font></th><th><font color="#fff">Link</font></th></tr>';
    foreach($list as $a)
    {
        if(empty($a)){
            continue;
        }

        else
        {
            $exp = get($a);
            if($exp === "ShitHappen1"){
                echo '<tr><th><font class="number">'.$i++.'</font></th><th>&nbsp;&nbsp;&nbsp;<font class="shittendstohappen">Can\'t bypass that link!</font>&nbsp;&nbsp;</th></tr>';
            }
            elseif($exp === "ShitHappen2"){
                echo '<tr><th><font class="number">'.$i++.'</font></th><th>&nbsp;&nbsp;&nbsp;<font class="shittendstohappen">Link provide is offline or not exist!</font>&nbsp;&nbsp;</th></tr>';
            }
            else {
                array_push($array, $exp);
                echo '<tr><th><font class="number">'.$i++.'</font></th><th>&nbsp;&nbsp;&nbsp;<a href="'.$exp.'"><font class="link">'.$exp.'</font></a>&nbsp;&nbsp;&nbsp;</th></tr>';}
            }
        }
        
          echo '</table>';
      
        # -- Count Random Shit Bypassed -- #
        if($CounT){
            $count = count($array);
            $handle = fopen('link.txt', "r");
            $num = fread($handle, filesize('link.txt'));
            fclose($handle);
            $numoflink = ($num + $count);
                        
            $handle = fopen('link.txt', "w");
            fwrite($handle, (int)$numoflink);
            fclose($handle);
        }

        # -- Count Random Shit Bypassed -- #
}

echo "<br /><br /><br />";
# -- Count Random Shit Bypassed -- #
if ($CounT) echo "<center><div class='foot'>Number Of SHIT Bypassed on ".$_SERVER["HTTP_HOST"]." is <b><u>".countLink()."</u></b></div></center>";

function countLink()
{
    if($handle = fopen('link.txt', "r"))
    {
        $realnumoflink = fread($handle, filesize('link.txt'));
        fclose($handle);
        return $realnumoflink;}

}
# -- Count Random Shit Bypassed -- #

function get($link){
        if(!preg_match('/^(http|https)/', $link)){
                $link = "http://".$link;
        }
        if(check($link)){
                $first = bypass($link);
                if($first !== false){
                        for($i = 0;$i<100;$i++){
                                $test = bypass($first);
                                if($test === false){
                                        break;
                                }else{
                                        $first = $test;
                                }
                        }
                        return $first;
                }else{
                        return "ShitHappen1";
                }
        }else{
                return "ShitHappen2";
        }
}

function bypass($link){
        $get = curl($link);
        if(strpos($get, "Location:")){
                preg_match_all('/Location: (.*?)/U', $get, $out);
                return $out[1][0];
        }elseif(preg_match('/(http:\/\/|https:\/\/\|)(www\.)?(q.gs|adf.ly)\/.*/', $link) ){
                preg_match_all('/var zzz \= \'(.*?)\'\;/', $get, $out);
                return $out[1][0];
        }elseif(preg_match('/(http:\/\/|https:\/\/|)(www\.)?.*\.(linkbucks.com|tinybucks.net)/', $link) ){
                preg_match_all('/Lbjs\.TargetUrl \= \'(.*?)\'/', $get, $out);
                return $out[1][0];
        }elseif(preg_match('/(http:\/\/|https:\/\/|)(www\.)?go\.urlcash\.net\/.*/', $link)){
                preg_match_all('/linkDestUrl \= \'(.*?)\'/', $get, $out);
                return $out[1][0];
        }elseif(preg_match('/(http:\/\/|https:\/\/|)(www\.)?lix\.in\/.*/', $link)){
                preg_match('/name=\'tiny\' value=\'(.*?)\'/', $get, $out);
                $data = curl($link, "tiny=".$out[1]."&submit=continue&submit=submit");
                preg_match('/src\=\"(.*?)\"/', $data, $out);
                return $out[1];
        }elseif(preg_match('/(http:\/\/|https:\/\/|)(www\.)?anonym\.to\/\?.*/', $link)){
                preg_match('/<p id=\"url\"><a href=\"(.*?)\"/', $get, $out);
                return $out[1];
        }elseif(preg_match('/(http|https):\/\/(www\.)?anonymz\.com\/.*/', $link)){
                preg_match('/<meta http-equiv=\"refresh\" content=\"0\; url=(.*)\">/', $get, $out);
                return $out[1];
        }elseif(preg_match('/(http|https):\/\/(www\.)?adfoc\.us\/.*/', $link)){
                preg_match('/[^\/\/]var click_url \= \"(.*?)\"\;/', $get, $out);
                return $out[1];
        }else{
                return false;
        }
}
 
function check($url){
        $ch=curl_init();
        curl_setopt($ch,CURLOPT_URL,$url );
        curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch,CURLOPT_VERBOSE,false);
        curl_setopt($ch,CURLOPT_TIMEOUT, 1);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch,CURLOPT_SSLVERSION,3);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST, FALSE);
        $page=curl_exec($ch);
        $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        if($httpcode>=200 && $httpcode<402) return true;
        else return false;
}
 
function curl($url, $post = ""){
        $ch = @curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_HEADER, 1);
        curl_setopt($ch, CURLOPT_USERAGENT, base64_decode('TW96aWxsYS81LjAgKFdpbmRvd3MgTlQgNi4xKSBBcHBsZVdlYktpdC81MzcuMjggKEtIVE1MLCBsaWt???lIEdlY2tvKSBDaHJvbWUvMjYuMC4xMzk3LjIgU2FmYXJpLzUzNy4yOA=='));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt ($ch, CURLOPT_HTTPHEADER, array('Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'));
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        if($post){
                curl_setopt($ch, CURLOPT_POST, 1);
                curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
        }
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
        $page = curl_exec( $ch);
        curl_close($ch);
        return $page;
}
 ?>



so far
Supported : adf.ly,q.gs,linkbucks,tinybucks,urlcash,lix.in,anonym.to,goo.gl,anonymz.com,adfoc.us .
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Sunday, February 3, 2013

How I spent my free day

Ever heard about BugCrowd?
Just knew about this recently. Thanks God I noticed from someone's tweet mentioning about this program.

BugCrowd - A Bug Bounty Program 

Do they offer any reward if we found any bugs in their website?
NO! They run managed bug bounties as their business. If there's any organisation want to do some testing on their websites, this guy will come around!

How the program works?
They will email the details when there's any website available for testing. A worth reward will be given as well!

How you can join this program?
Just register in their official blog here http://blog.bugcrowd.com/ and just need to wait for their updates!
Fyi, there's already Beta 004 mode. So, it still not too late to join the program :D

Did they really give you the reward?
:) Just joined their Beta 003 recently and...



For more, follow their updates from their twitter @bugcrowd


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