Rooting Samsung Galaxy S3 version 4.3

Fortunately I found this link How to enable hidden developer options on your samsung galaxy S4 and the same instructions work for the S3.
Simply follow these steps:
  • Go to SettingsMoreAbout Device
  • Scroll down to Build Number
  • Tap it repeatedly (It'll show a message telling you how many more times you need to tap it to enable developer mode).
  • See the Developer options menu under SettingsMore
 Next you want the full version of SK's tool.