Here's the GT-I9505 and I9500 Root , Also mostly old root like Cofface's CWM Recovery root won't work on 4.3 , And some apps like GameCIH Don't support the Android 4.3
Also , Here you go!
http://xdaforums.com/showthread.php?t=2219803
(Next time please use google!)
I used kingo to root. I know that i may not talk about it here. Didnt trip my knox counter.... it will when i flash custom recovery i think.
Sent from my GT-I9505 using xda app-developers app