Is it illegal to track down a scammer's IP address for the greater good.

Just as what the question says, I have been scammed and I really want to track down the scammer's address. Since I am still a college student and I don't have sufficient money to take legal actions and to put that scammer to jail, I would like to know what I should do going forward so that the scammer will get what he deserves. I heard that it is illegal to track down a scammer's IP address and if I need to do it I require the aid of a lawyer that could be expensive. Please give me advice on what I should do. I feel that I need to do something rather than sit idly by and let him go. My country is in Indonesia and I am not sure if the police will do anything about it.