How to root firmware 4.3
Required files:
1-Flash recovery with odin.(power off device,[hold volume down -home and power keys] ,insert usb cable to device,select file after click start button)
2-After put UPDATE-SuperSU-v2.37.zip to sdcard and flash with cwm recovery.
How to root firmware 4.4.2
1-Flash CF-Auto-Root-ms013g-ms013gxx-smg7102.tar.md5 with odin.(This file have Chainfire autoroot script)[All thanks for Chainfire]