KnoxPatcher

What is it?

KnoxPatcher is a program that allows Samsung 'secure' apps (so far only Secure Folder) to function on KNOX-tripped Samsung devices.

Instructions

You will need a GNU/Linux machine to use KnoxPatcher, although I am working on a flashable zip.

Deodex your services.jar and place it in the source directory.
Run ./patch.sh to patch it.
Reboot into TWRP, mount /system, and copy services.jar into /system/framework.
Edit /system/build.prop and remove / comment out ro.config.iccc_version.
Reboot.
???
Profit

Tested Devices

This is tested and working with Secure Folder on my Galaxy S9 (SM-G960F).