The PingPong Root tool is the easiest way to root the Galaxy S6 and Galaxy S6 Edge all variants, and now it is the easiest way to root the HTC One M9! The base of this root method uses KingRoot to gain SuperSU, but also adds SuperSU instead of the shady Chinese KingUser app. This method is as simple as a click. Just download the app, install it, then run it. After a reboot you can enjoy your freshly rooted HTC One M9! The latest PingPong app also supports more than 66 roms and firmwares on the devices it supports! This is quickly becoming a one stop shop for legit root!
via XDA