Pokemon Go Xposed - Let it trust, let it trust!
This Xposed module takes care of always letting the Pokemon Go app think it's in its trusted surrounding. Whatever trust chain is actually established when connecting to the API, it will be replaced with the one expected by the app.
This makes MITM thingies like pokemon-go-mitm work again :)
Additionally it lets you set a custom API endpoint instead of the hardcoded one, making community servers like POGOserver usable.