assmbly/find de-cyrptor and create idc script

Need help analyzing some Assembly code that was provided to me in my malcode class. The assembly code is a dump output of a malicious file. We are supposed to find where the decryptor/encryptor section is and write an idc usable script to decode the malcode. I need someone to point out where the relevant section is in the assembly code and sample/usable code for an idc script as I am having trouble locating it. I can provide the provided assembly file. I have about two weeks left to finish/turn in this assignment at school, so I would need to have it completed within a few days so I can review it and figure out/learn what was done. FYI my budget is not too high around $50 or a little higher if that's what it take, I am not able to specify an actual price so I just wanted to be upfront before people start bidding. Thanks...