Aura HD Need help ignoring broken area of display.

Hello,

I recently dropped my dear Kobo. Now the screen is broken in one place. (Thread here)

Someone told me that maybe there is a way to fool the software to make it ignore the broken place of the display.

Can it be done? Can I modify maybe KOReader for this?

I'm a IT student and I've looked at KOReader source code but Lua is unfamiliar language and I have no idea how to do it yet.