How to code an unlock all tool in Call of duty Warzone

Is there any chance to create an unlock-all tool for a video game named Call of Duty: Warzone?

The tool should give the player in-game the ability to access all weapons, skins, and upgrades that are normally hidden behind an XP Wall and currency Wall.

How would I go on about analyzing the code, then look for a way to access these "hidden" aspects of the game, and then write an executable for a simple in-game UI that is displayed over the "normal UI" of the game?