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<?php 

/* 
# -*- coding: utf-8 -*- 
# @Author: h1xa 
# @Date:   2020-09-05 20:49:30 
# @Last Modified by:   h1xa 
# @Last Modified time: 2020-09-05 22:32:47 
# @email: h1xa@ctfer.com 
# @link: https://ctfer.com 

*/ 


if(isset($_GET['c'])){ 
    $c=$_GET['c']; 
    if(!preg_match("/\;|cat|flag| |[0-9]|\\$|\*|more|less|head|sort|tail|sed|cut|awk|strings|od|curl|\`|\%|\x09|\x26/i", $c)){ 
        system($c." >/dev/null 2>&1"); 
    } 
}else{ 
    highlight_file(__FILE__); 
}

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<?php

/*
# -*- coding: utf-8 -*-
# @Author: h1xa
# @Date:   2020-09-05 20:49:30
# @Last Modified by:   h1xa
# @Last Modified time: 2020-09-05 22:42:52
# @email: h1xa@ctfer.com
# @link: https://ctfer.com

*/


if(isset($_GET['c'])){
    $c=$_GET['c'];
    if(!preg_match("/\;|cat|flag| |[0-9]|\\$|\*|more|less|head|sort|tail|sed|cut|tac|awk|strings|od|curl|\`|\%|\x09|\x26/i", $c)){
        system($c." >/dev/null 2>&1");
    }
}else{
    highlight_file(__FILE__);
}