Web57
[!IMPORTANT] $(())=0构造 0x01 访问靶场，回显源码 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 <?php /* # -*- coding: utf-8 -*- # @Author: h1xa # @Date: 2020-09-05 20:49:30 # @Last Modified by: h1xa # @Last Modified time: 2020-09-08 01:02:56 # @email: h1xa@ctfer.com # @link: https://ctfer.com */ // 还能炫的动吗？ //flag in 36.php if(isset($_GET['c'])){ $c=$_GET['c']; if(!preg_match("/\;|[a-z]|[0-9]|\`|\|\#|\'|\"|\`|\%|\x09|\x26|\x0a|\>|\<|\.|\,|\?|\*|\-|\=|\[/i", $c)){ system("cat ".$c.".php"); } }else{ highlight_file(__FILE__); } 0x02 [!NOTE] ...