Old apps & MM permissions

[Rom]

Hello,

i use an old free app on LP (after modify platform.xml file).
This old app is:
http://www.androidapps.biz/app/com.taxaly.noteme/fr

I would like to know if its possible to modify the manifest file of this app to upgrade the permissions to work with Marshmallow ?
And if its possible, whats permissions i must add in the xml file ?

I know decompile an app but i don't know if i can simply modify the manifest to make it rework..

Thanks :good: