legal reasons? Seriously, has the DRM mafia cowed people so much? What the hell is wrong with sharing public software tools with others?

Here's one option you might try (no connection to it but it seems to be one of the most recently usable, trustworthy versions) https://github.com/noDRM/DeDRM_tools

Is it illegal to charge a URL on your country? You might want to try to share a Google search

Noting that the newer books require additional modules to get around the KFX encryption

Even then I’ve found around 5% don’t decrypt