TL:DR:Recreation of this [hacktrick](https://book.hacktricks.xyz/pentesting/pentesting-web/werkzeug)
1. Don’t use Werkzeug debugger lol2. Give the `?animal=` GET parameter something unexpected (`?animal=blah`) and get yourself a traceback with a python console (Werkzeug lol)3. Oh wait it’s PIN protected4. Nevermind you can generate the pin yourself5. Directory-traversal though `?animal=` parameter for linux files (like `?animal=%2F..%2F../sys/class/net/eth0/address`)6. Cat flag but in a python shell