No Entry Test is conducted by NUST. However, you must qualify GAT (General) with minimum 50 raw score conducted by NTS or Higher Education Aptitude Test (HAT) conducted by HEC, ETC for admission in MS Programs or GRE (General) conducted by ETS, USA with acceptable score. More details under the following link:

http://www.nust.edu.pk/Admissions/Masters-Programs/Pages/Frequently-Asked-Questions.aspx