> 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/active-directory/kerberos/kerberos-observation-with-wireshark.md).

# Observando Kerberos con Wireshark

Notas de seguridad de Active Directory para Observando Kerberos con Wireshark, que cubren enumeración, Kerberos, credenciales, abuso de ACL, movimiento lateral, flujo de explotación y pasos de validación.

### Observando una autenticación

Abrimos Wireshark y luego nos conectamos con un usuario, por ejemplo:

```
user1
```

En Wireshark, puedes filtrar el tráfico Kerberos con:

```
kerberos
```

A continuación observamos los intercambios:

```bash
AS-REQ
AS-REP
TGS-REQ
TGS-REP
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-90df44f66d6cbc4719e40f3d26cd2b2673f97392%2F%7BBB1E1E17-1E72-4CFA-9A55-5C93C28496AC%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

### Ejemplo con acceso a un recurso compartido sin permisos

Desde `user2`, intentamos acceder a un recurso compartido administrativo:

```
cd //WS01/C$
```

En Wireshark, podemos observar:

```
TGS-REQ
TGS-REP
Acceso SMB denegado
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-353387bfc535308105528a3ae872608bf3f57671%2F%7BBEAA2E5F-3867-4FF0-8690-E2E5E50AF4F8%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

Esto significa que:

1. el usuario solicita un ticket de servicio;
2. el KDC emite el ticket;
3. el ticket se presenta al servidor;
4. el servidor deniega el acceso debido a permisos SMB o NTFS.

### Ticket y autenticador

Al acceder a un servicio, el cliente generalmente envía:

* un ticket de servicio;
* un autenticador.

El ticket demuestra que el KDC autorizó el acceso al servicio.

El autenticador demuestra que el cliente es realmente quien usa el ticket.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-48cdc3fab929a2114c6b35cc7d41f53cdb9cd9f0%2F%7B1F228000-B616-47CB-B34B-20A5DB584B21%7D.png?alt=media" alt=""><figcaption></figcaption></figure>


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