vlOd2

C: Client
S: Server

== ClassiCube Login ==

C: Makes blank GET request to https://www.classicube.net/api/login/
S: Server responds with {"authenticated":false,"errors":[],"token":<random token>,"username":null} and sets a useless session cookie
C: Makes POST request to https://www.classicube.net/api/login/ with the useless session cookie and the following post data: username=<username>&password=<password>&token=<random token from previos response>&login_code=<login code (if required) or empty>
S: Replies with either {"authenticated":true,"errors":[],"token":"","username":"<username>"} (success) or {"authenticated":true,"errors":[<error1>,<error2> etc],"token":"","username":"<username>"} (failure)
S: Sets the proper session cookie on success

vlOd2

This guide explains how to install .NET Framework 4.0 and 4.5 on VS 2022, as it doesn't support these versions out of the box.
Microsoft says these versions are outdated but many people still need them to maintain legacy apps.

Requirements:
- VS 2022
- 7-zip (I haven't tested WinRar)

Notes:
- When .NET 4.0 is mentioned, it means .NET Framework 4.0
- When it's mentioned to open as an archive or un-zip, use 7-zip