目錄

• 源碼
• 思路
• 題解
• 總結

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源碼

<?php/* # -*- coding: utf-8 -*- # @Author: h1xa # @Date: 2020-12-02 17:44:47 # @Last Modified by: h1xa # @Last Modified time: 2020-12-02 19:29:02 # @email: h1xa@ctfer.com # @link: https://ctfer.com*/error_reporting(0); highlight_file(__FILE__); include('flag.php');class ctfShowUser{public $username='xxxxxx';public $password='xxxxxx';public $isVip=false;public function checkVip(){return $this->isVip;}public function login($u,$p){if($this->username===$u&&$this->password===$p){$this->isVip=true;}return $this->isVip;}public function vipOneKeyGetFlag(){if($this->isVip){global $flag;echo "your flag is ".$flag;}else{echo "no vip, no flag";}} }$username=$_GET['username']; $password=$_GET['password'];if(isset($username) && isset($password)){$user = new ctfShowUser();if($user->login($username,$password)){if($user->checkVip()){$user->vipOneKeyGetFlag();}}else{echo "no vip,no flag";} }

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思路

很基礎的題
只要讓username和password值為xxxxxx就好了

題解

?username=xxxxxx&password=xxxxxx

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總結

水題

總結

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