参考:NPUCTF2020 验证🐎-(弱类型比较、hash绕过、构造函数执行任意代码) | Xiao Leung's Blog (plasf.cn) [WMCTF2020]Make PHP Great Again 知识点: 1.require_once 绕过不能重复包含文件的限制 2.利用PHP_SESSION_UPLOAD_PROGRESS进行文件包含 解题过程 给出源码,看起来挺短,但是设计的知识点还是挺复杂的:...
BUUCTF部分Web题目分析# WMCTF2020 Make PHP Great Again题目背景: 这道题目主要是考察PHP中的`require_once()`函数的使用以及如何利用符号链接来读取文件。核心知识点:1. `require_once()`函数: 在PHP中,`require_o
'Windows NT')){// Determine OS and execute the ping command.// var_dump($target);$target=str_replace(array_keys($substitutions),$substitutions,$target);// Remove any of the
require_once'flag.php';if(isset($_GET['mash'])andisset($_GET['hash'])){$res=sanitize($_GET['mash']);$hash=sanitize($_GET['hash']);$secretValue=(rand(5,5555)*555+55555555555);if(($res!=false)and($hash!=false)){if($res.$secretValue==md5($_GET['hash'])){echo $flag;}e...
require_once 'welcome/welcome.php'; }else{ if(!file_exists("./import/$file.php")){ die("The file does not exit !"); }elseif(!system("php ./import/$file.php")){ die('Something was wrong ! But it is ok! ignore it :)'); } } ?> waf.php 1 2 3 4 5 6 7 8 9 10 11...
这个题长得跟web3很相似,但是实际上内容不同,得到flag的姿势也是各不相同。 打开题目界面,依旧是老样子,上边光秃秃的就一句include ...结合上题目的知识很清晰的判断出是文件包含漏洞。“PHP:include(), include_once(), require(), require_once()等 老姿势 , url=/etc/passwd &nb... Python...
get the flag; error_reporting(0); require'db.inc.php'; function clean($str{ (get_magic_quotes_gpc)){ $str=stripslashes($str) } return htmlentities(str ENT_QUOTES); } $username = @cleanstring$_GET['username']); $password = @clean((string$_GET['password']...
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available. WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL modul...
if(isset($rce)){ if(!preg_match("/cat|more|less|head|tac|tail|nl|od|vi|vim|sort|flag| |\;|[0-9]|\*|\`|\%|\>|\<|\'|\"/i",$rce)){ system($rce); }else{ echo"hhhhhhacker!!!"."\n"; } }else{ highlight_file(__FILE__); ...
uint40 commitLastBlock, uint commit, bytes32 r, bytes32 s, uint8 v, uint reveal) public { game = _game; bytes32 signatureHash = keccak256(abi.encodePacked(commitLastBlock, commit)); require (croupier == ecrecover(signatureHash, v, r, s), "signature is not valid."); require (commit...