This document is intended to provide detailed instructions for bypassing certificate pinning via a custom Root CA. It covers all the required topics for understanding this method.
You can download it from the following link: https://packetstormsecurity.com/files/download/158928/bypassing-pinning.pdf
Source: https://packetstormsecurity.com/files/158928/Bypassing-Certificate-Pinning-In-Modern-Android-Application-Via-Custom-Root-CA.html