help to find bug

hello my friends at blackhat forum i want to find bug in this cms how can i find vulnerable bugs in this cms: http://80.191.210.252/ or in this site http://www.iaut.ac.ir
i am a c++ programmer
please help me to find bug in this cms
what programming language this cms wriitten?
how to find bug in this cms?
i havent source code of this cms?
if you have article about find bug please presentation me that article with download link
very thx

why you don't help me?
plz help me

The site is written in ASP (part of the Microsoft .NET network). Besides of that it's hard for us to find bugs in a site that's written in a language which most of us probably don't understand. Since you program C++ you should be able to learn ASP, but finding the exact bug without having the sourcecode is really hard.

is this site vulnerable for sql injection? or xxs?