草庐IT

Vulnhub之Mhz_c1f靶机详细测试过程

Jason_huawen 2023-04-11 原文

Mhz_c1f

作者: jason huawen

靶机信息

名称：mhz_cxf: c1f

地址：

https://www.vulnhub.com/entry/mhz_cxf-c1f,471/

识别目标主机IP地址

 sudo netdiscover -i eth1 -r 192.168.56.0/24
Currently scanning: 192.168.56.0/24   |   Screen View: Unique Hosts                                                                                        
                                                                                                                                                            
 3 Captured ARP Req/Rep packets, from 3 hosts.   Total size: 180                                                                                            
 _____________________________________________________________________________
   IP            At MAC Address     Count     Len  MAC Vendor / Hostname      
 -----------------------------------------------------------------------------
 192.168.56.1    0a:00:27:00:00:11      1      60  Unknown vendor                                                                                           
 192.168.56.100  08:00:27:64:18:1b      1      60  PCS Systemtechnik GmbH                                                                                   
 192.168.56.249  08:00:27:02:7b:29      1      60  PCS Systemtechnik GmbH

利用Kali Linux的netdiscover工具识别目标主机的IP地址为192.168.56.249

NMAP扫描

┌──(kali㉿kali)-[~/Desktop/Vulnhub/MH]
└─$ sudo nmap -sS -sV -sC -p- 192.168.56.249 -oN nmap_full_scan
Starting Nmap 7.92 ( https://nmap.org ) at 2023-04-07 02:18 EDT
Nmap scan report for localhost (192.168.56.249)
Host is up (0.00013s latency).
Not shown: 65533 closed tcp ports (reset)
PORT   STATE SERVICE VERSION
22/tcp open  ssh     OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   2048 38:d9:3f:98:15:9a:cc:3e:7a:44:8d:f9:4d:78:fe:2c (RSA)
|   256 89:4e:38:77:78:a4:c3:6d:dc:39:c4:00:f8:a5:67:ed (ECDSA)
|_  256 7c:15:b9:18:fc:5c:75:aa:30:96:15:46:08:a9:83:fb (ED25519)
80/tcp open  http    Apache httpd 2.4.29 ((Ubuntu))
|_http-title: Apache2 Ubuntu Default Page: It works
|_http-server-header: Apache/2.4.29 (Ubuntu)
MAC Address: 08:00:27:02:7B:29 (Oracle VirtualBox virtual NIC)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 9.20 seconds

NMAP扫描结果表明目标主机有2个开放端口：22（ssh)、80(http)

获得Shell

─$ curl http://192.168.56.249/robots.txt
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL was not found on this server.</p>
<hr>
<address>Apache/2.4.29 (Ubuntu) Server at 192.168.56.249 Port 80</address>
</body></html>


└─$ nikto -h http://192.168.56.249
- Nikto v2.1.6
---------------------------------------------------------------------------
+ Target IP:          192.168.56.249
+ Target Hostname:    192.168.56.249
+ Target Port:        80
+ Start Time:         2023-04-07 02:19:53 (GMT-4)
---------------------------------------------------------------------------
+ Server: Apache/2.4.29 (Ubuntu)
+ The anti-clickjacking X-Frame-Options header is not present.
+ The X-XSS-Protection header is not defined. This header can hint to the user agent to protect against some forms of XSS
+ The X-Content-Type-Options header is not set. This could allow the user agent to render the content of the site in a different fashion to the MIME type
+ No CGI Directories found (use '-C all' to force check all possible dirs)
+ Server may leak inodes via ETags, header found with file /, inode: 2aa6, size: 5a40b796e2191, mtime: gzip
+ Apache/2.4.29 appears to be outdated (current is at least Apache/2.4.37). Apache 2.2.34 is the EOL for the 2.x branch.
+ Allowed HTTP Methods: GET, POST, OPTIONS, HEAD 
+ OSVDB-3233: /icons/README: Apache default file found.
+ /notes.txt: This might be interesting...
+ 7915 requests: 0 error(s) and 8 item(s) reported on remote host
+ End Time:           2023-04-07 02:20:17 (GMT-4) (24 seconds)
---------------------------------------------------------------------------
+ 1 host(s) tested
                                                                                                                                                             
┌──(kali㉿kali)-[~/Desktop/Vulnhub/MH]
└─$ curl http://192.168.56.249/notes.txt 
1- i should finish my second lab 
2- i should delete the remb.txt file and remb2.txt

notes.txt提示可能有两个文件：remb.txt, remb2.txt

┌──(kali㉿kali)-[~/Desktop/Vulnhub/MH]
└─$ curl http://192.168.56.249/remb.txt  
first_stage:flagitifyoucan1234
                                                                                                                                                             
┌──(kali㉿kali)-[~/Desktop/Vulnhub/MH]
└─$ curl http://192.168.56.249/remb2.txt
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL was not found on this server.</p>
<hr>
<address>Apache/2.4.29 (Ubuntu) Server at 192.168.56.249 Port 80</address>
</body></html>

remb.txt是不是ssh用户名和密码，尝试一下：(remb2.txt文件不存在)

──(kali㉿kali)-[~/Desktop/Vulnhub/MH]
└─$ ssh first_stage@192.168.56.249                             
The authenticity of host '192.168.56.249 (192.168.56.249)' can't be established.
ED25519 key fingerprint is SHA256:Jxm0b2xUhxb2N50E9UVsgn5u7Pow8xX6o12kZDGlTlg.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.56.249' (ED25519) to the list of known hosts.
first_stage@192.168.56.249's password: 
Welcome to Ubuntu 18.04.4 LTS (GNU/Linux 4.15.0-96-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Fri Apr  7 06:33:12 UTC 2023

  System load:  0.0               Processes:             90
  Usage of /:   38.2% of 9.78GB   Users logged in:       0
  Memory usage: 16%               IP address for enp0s3: 192.168.56.249
  Swap usage:   0%


23 packages can be updated.
0 updates are security updates.


Last login: Fri Apr 24 18:18:07 2020 from 192.168.5.253
$ id
uid=1001(first_stage) gid=1001(first_stage) groups=1001(first_stage)
$ bash -i
first_stage@mhz_c1f:~$ 


first_stage@mhz_c1f:~$ cat user.txt 
HEEEEEY , you did it 
that's amazing , good job man

so just keep it up and get the root bcz i hate low privileges ;)

#mhz_cyber

将mhz_ctf家目录的图片下载到Kali Linux本地进行分析，其中一个图片可以破解密码从而解密内容：

                                                                                                                                                             
┌──(kali㉿kali)-[~/Desktop/Vulnhub/MH]
└─$ stegseek spi.jpeg            
StegSeek 0.6 - https://github.com/RickdeJager/StegSeek

[i] Found passphrase: ""
[i] Original filename: "remb2.txt".
[i] Extracting to "spi.jpeg.out".

                                                                                                                                                             
┌──(kali㉿kali)-[~/Desktop/Vulnhub/MH]
└─$ cat spi.jpeg.out                          
ooh , i know should delete this , but i cant' remember it 
screw me 

mhz_c1f:1@ec1f


first_stage@mhz_c1f:/home/mhz_c1f/Paintings$ su - mhz_c1f 
Password: 
mhz_c1f@mhz_c1f:~$ id
uid=1000(mhz_c1f) gid=1000(mhz_c1f) groups=1000(mhz_c1f),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),108(lxd)
mhz_c1f@mhz_c1f:~$ sudo -l
[sudo] password for mhz_c1f: 
Matching Defaults entries for mhz_c1f on mhz_c1f:
    env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin\:/snap/bin

User mhz_c1f may run the following commands on mhz_c1f:
    (ALL : ALL) ALL
mhz_c1f@mhz_c1f:~$ sudo /bin/bash
root@mhz_c1f:~# cd /root
root@mhz_c1f:/root# ls -alh
total 32K
drwx------  3 root root 4.0K Apr 24  2020 .
drwxr-xr-x 24 root root 4.0K Apr 13  2020 ..
-rw-------  1 root root   54 Apr 24  2020 .bash_history
-rw-r--r--  1 root root 3.1K Apr  9  2018 .bashrc
-rw-r--r--  1 root root  148 Aug 17  2015 .profile
-rw-r--r--  1 root root  124 Apr 24  2020 .root.txt
drwx------  2 root root 4.0K Apr 13  2020 .ssh
-rw-------  1 root root  833 Apr 24  2020 .viminfo
root@mhz_c1f:/root# cat .root.txt
OwO HACKER MAN :D

Well done sir , you have successfully got the root flag.
I hope you enjoyed in this mission.

#mhz_cyber
root@mhz_c1f:/root#

至此得到了root shell以及root flag

经验教训

  1. 在得到shell后提权时方向是对的，因为检查其他的提权漏洞都没有发现，可疑的就是mhz_ctf用户目录下的几个图片文件，但是在检查了2个图片后就中止，以为方向问题，其实答案就在第4个图片文件中，所以需要坚持的精神
VulnhubMhz_cltgtamp

有关Vulnhub之Mhz_c1f靶机详细测试过程的更多相关文章

  1. ruby-on-rails - 使用 Ruby on Rails 进行自动化测试 - 最佳实践 - 2

    很好奇，就使用ruby​​onrails自动化单元测试而言，你们正在做什么？您是否创建了一个脚本来在cron中运行rake作业并将结果邮寄给您？git中的预提交Hook？只是手动调用？我完全理解测试，但想知道在错误发生之前捕获错误的最佳实践是什么。让我们理所当然地认为测试本身是完美无缺的，并且可以正常工作。下一步是什么以确保他们在正确的时间将可能有害的结果传达给您？ 最佳答案 不确定您到底想听什么，但是有几个级别的自动代码库控制:在处理某项功能时，您可以使用类似autotest的内容获得关于哪些有效，哪些无效的即时反馈。要确保您的提

  2. ruby - 使用 C 扩展开发 ruby​​gem 时，如何使用 Rspec 在本地进行测试？ - 2

    我正在编写一个包含C扩展的gem。通常当我写一个gem时，我会遵循TDD的过程，我会写一个失败的规范，然后处理代码直到它通过，等等......在“ext/mygem/mygem.c”中我的C扩展和在gemspec的“扩展”中配置的有效extconf.rb，如何运行我的规范并仍然加载我的C扩展？当我更改C代码时，我需要采取哪些步骤来重新编译代码？这可能是个愚蠢的问题，但是从我的gem的开发源代码树中输入“bundleinstall”不会构建任何native扩展。当我手动运行rubyext/mygem/extconf.rb时，我确实得到了一个Makefile(在整个项目的根目录中)，然后当

  3. ruby - Ruby 的 Hash 在比较键时使用哪种相等性测试？ - 2

    我有一个围绕一些对象的包装类，我想将这些对象用作散列中的键。包装对象和解包装对象应映射到相同的键。一个简单的例子是这样的:classAattr_reader:xdefinitialize(inner)@inner=innerenddefx;@inner.x;enddef==(other)@inner.x==other.xendenda=A.new(o)#oisjustanyobjectthatallowso.xb=A.new(o)h={a=>5}ph[a]#5ph[b]#nil,shouldbe5ph[o]#nil,shouldbe5我试过==、===、eq?并散列所有无济于事。

  4. ruby - RSpec - 使用测试替身作为 block 参数 - 2

    我有一些Ruby代码，如下所示:Something.createdo|x|x.foo=barend我想编写一个测试，它使用double代替block参数x，这样我就可以调用:x_double.should_receive(:foo).with("whatever").这可能吗？ 最佳答案 specify'something'dox=doublex.should_receive(:foo=).with("whatever")Something.should_receive(:create).and_yield(x)#callthere

  5. ruby - Sinatra:运行 rspec 测试时记录噪音 - 2

    Sinatra新手；我正在运行一些rspec测试，但在日志中收到了一堆不需要的噪音。如何消除日志中过多的噪音？我仔细检查了环境是否设置为:test，这意味着记录器级别应设置为WARN而不是DEBUG。spec_helper:require"./app"require"sinatra"require"rspec"require"rack/test"require"database_cleaner"require"factory_girl"set:environment,:testFactoryGirl.definition_file_paths=%w{./factories./test/

  6. ruby-on-rails - 迷你测试错误 : "NameError: uninitialized constant" - 2

    我遵循MichaelHartl的“RubyonRails教程:学习Web开发”，并创建了检查用户名和电子邮件长度有效性的测试(名称最多50个字符，电子邮件最多255个字符)。test/helpers/application_helper_test.rb的内容是:require'test_helper'classApplicationHelperTest在运行bundleexecraketest时，所有测试都通过了，但我看到以下消息在最后被标记为错误:ERROR["test_full_title_helper",ApplicationHelperTest,1.820016791]test

  7. ruby - 即使失败也继续进行多主机测试 - 2

    我已经构建了一些serverspec代码来在多个主机上运行一组测试。问题是当任何测试失败时，测试会在当前主机停止。即使测试失败，我也希望它继续在所有主机上运行。Rakefile:namespace:specdotask:all=>hosts.map{|h|'spec:'+h.split('.')[0]}hosts.eachdo|host|begindesc"Runserverspecto#{host}"RSpec::Core::RakeTask.new(host)do|t|ENV['TARGET_HOST']=hostt.pattern="spec/cfengine3/*_spec.r

  8. ruby-on-rails - 如何使辅助方法在 Rails 集成测试中可用？ - 2

    我在app/helpers/sessions_helper.rb中有一个帮助程序文件，其中包含一个方法my_preference，它返回当前登录用户的首选项。我想在集成测试中访问该方法。例如，这样我就可以在测试中使用getuser_path(my_preference)。在其他帖子中，我读到这可以通过在测试文件中包含requiresessions_helper来实现，但我仍然收到错误NameError:undefinedlocalvariableormethod'my_preference'.我做错了什么？require'test_helper'require'sessions_hel

  9. ruby-on-rails - Cucumber 是否只是 rspec 的包装器以帮助将测试组织成功能？ - 2

    只是想确保我理解了事情。据我目前收集到的信息，Cucumber只是一个“包装器”，或者是一种通过将事物分类为功能和步骤来组织测试的好方法，其中实际的单元测试处于步骤阶段。它允许您根据事物的工作方式组织您的测试。对吗？ 最佳答案 有点。它是一种组织测试的方式，但不仅如此。它的行为就像最初的Rails集成测试一样，但更易于使用。这里最大的好处是您的session在整个Scenario中保持透明。关于Cucumber的另一件事是您(应该)从使用您的代码的浏览器或客户端的角度进行测试。如果您愿意，您可以使用步骤来构建对象和设置状态，但通常您

  10. ruby-on-rails - 如何调试 cucumber 测试？ - 2

    我有:When/^(?:|I)follow"([^"]*)"(?:within"([^"]*)")?$/do|link,selector|with_scope(selector)doclick_link(link)endend我打电话的地方:Background:GivenIamanexistingadminuserWhenIfollow"CLIENTS"我的HTML是这样的:CLIENTS我一直收到这个错误:.F-.F--U-----U(::)failedsteps(::)nolinkwithtitle,idortext'CLIENTS'found(Capybara::Element

随机推荐