So, you want to know how to hack Pakistani web servers. Most probably, You are an Indian, and a noob also. Most of the kids, ask about such a question. There are no such things as Indian or Pakistani servers. Web server is web servers that work in the same way in all countries lol! It is not that every country has something special in the name of the servers. I think you should clear your definition of the server first.
First of all, the question is incomplete what type of servers do you want to hack. Server is mostly Linux based and a small amount of Windows-based servers are there. If you are serious, and you are not here with the question because you have seen some sci-fi hacking movie in recent days, which kinda hyped you. So, if you are ready to know how to hack web servers. Check out these posts: