Default [Q] How to install/push SU into system without using external SD card?

http://forum.xda-developers.com/andr...white-t2816701

i followed this procedure to root s7262. it worked. the CWM in working fine with no WHITE SCREEN ISSUES. But the problem i am facing is that my mobile external SD card slot is not working due to liquid damage. so is there any way to push SU without using external SD card? like adb commands?. i am new but i know all the basic rooting.