> 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
Notas de SSRF básico contra un sistema interno para laboratorios de PortSwigger Web Security Academy, incluido el flujo de explotación, pruebas de payloads, validación con Burp Suite y contexto de remediación.
## SSRF básico contra otro sistema 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 eliminar al usuario carlos.
#### **Análisis y explotación**
* El **stockApi** el parámetro se envía a **Intruder** para automatizar la prueba de direcciones internas:
```javascript
stockApi=http://192.168.0.§1§:8080/admin
```
Se lleva a cabo un ataque de fuerza bruta sobre el **254 direcciones posibles** del rango interno, todas con la ruta /admin.
Se descarga un diccionario de valores para alimentar el ataque:
```bash
wget https://gist.githubusercontent.com/danielthall/09b8f173b5c0b84065d8e211def83c0b/raw/20d713765b3fa620c09aebd36e41ce69debef865/0-1000.txt
```
* Después de lanzar el ataque, el **192.168.0.14** la dirección devuelve un \*\*código HTTP 200\*\*, lo que indica que la interfaz de administración es accesible.
#### **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
```
---
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