Custom DFIR

Hi guys, so as a part of my project I’m building a custom DFIR for various OS’ .
I’m writing a python script for all operations.
For windows I was a little stuck trying to access the registry hives. So far I’ve tried using regipy and winreg but I keep running into an error stating “permission denied”
I read there is a way to access hives through the system account but I’m not sure how far that would be feasible …

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