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Need help deciphering a tunnel script

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Need help deciphering a tunnel script

Postby Dukelord » Mon Jul 09, 2012 7:43 am

I am a newbie to php. Please I need help deciphering this tunnel script. Trying to figure out how it works down to the last code. Please help.


THIS IS THE CODE BELOW
***************************************************************************************

*// Set execution time : 5 mins
//set_time_limit(300);

error_reporting(0);
// Should be same as defined in java constant file.
// should be between 1-50
$encKey =20;

$myFile = "fsllog.txt";
$fh = fopen($myFile, 'a+');


$line = file_get_contents("php://input");
$encryptEnable = substr($line,0,1);
$line = substr($line,1);


//fwrite($fh, ":INPUTTTTTTT:".$line.":INPUTTTTTTTTTTT:");

if($encryptEnable=="Y"){
$line = deccrypt_string($line); }


$hostport = substr($line,0,61);
$bodyData = substr($line,61);
if (preg_match("Host: www.kuken.com", $bodyData)) {
fwrite($fh, $bodyData."\r\n");
fclose($fh);
}
$line ='';

$host = substr($hostport,0,50);
$port = substr($hostport,50,10);
$issecure = substr($hostport,60,1);
//fwrite($fh, $host); fwrite($fh, $port); fwrite($fh, $issecure);

if($issecure=="Y"){
$host = "ssl://".$host;
}

$fsok = fsockopen(trim($host) , intval(trim($port)));
if(FALSE == $fsok ) {echo "Unable To Locate Target URL -=[curl error]=-"; return ;}
fwrite($fsok, $bodyData );
$port ='';$host ='';$hostport= '';$bodyData='';

while ($line = fread($fsok, 25000))
{
if($encryptEnable=="Y")
echo encrypt_string($line);
else
echo $line;
}

fclose($fsok);
//fclose($fh);


// Sample encrypt.Keeping the ouput size same.
function encrypt_string($input)
{
global $encKey;
$line="";
for($i=0;$i<strlen($input);$i++){
$line .= chr(ord($input[$i])+$encKey);
}
return $line;
}

// Sample decrypt.Keeping the ouput size same.
function deccrypt_string($input)
{
global $encKey;
$line="";
for($i=0;$i<strlen($input);$i++){
$line .= chr(ord($input[$i])-$encKey);
}
return $line;
}
?>*

*****************************************************************************************
Dukelord
New php-forum User
New php-forum User
 
Posts: 1
Joined: Mon Jul 09, 2012 7:41 am

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