Cheat Engine

hodge-podge · Posted: Thu Dec 31, 2009 12:47 pm Post subject: Is it Encrypted? :O

As an opportunity to better understand coding and hacking, I've been trying to reverse engineer .upk files used in America's Army. I've researched the files and I am fairly certain that they are based off the Unreal files. Also, I am pretty sure that they used zlib for the compression (The headers match, the game uses the Unreal engine etc)

I've been trying to reverse it using a python script because it supports zlib decompression. As of now I am trying to get it to simply find where the compressed blocks begin, but I'm running into trouble, which I am afraid means that they could be encrypted. As I am fairly new to coding I would like to know if there is any method to determine if it is encrypted so I can save myself the time and effort.

On the other hand, I may be running into problems because of my mediocre coding skills, or my lack of understanding of what I'm up against.

Thanks

hodge-podge · Posted: Sun Jan 03, 2010 1:58 pm Post subject:

Hmm, I'm assuming that either no one knows much about this subject, or that no one wants to try answering it. Can anyone offer some insight into this?

Psy · Posted: Sun Jan 03, 2010 2:16 pm Post subject:

There's some info on people doing similar things over on the epidelphigames (<- grrr... forum parsing that wrong) forum (UT home). Might be worth a check. I don't know enough about this to help you, I know that much Smile

hodge-podge · Posted: Thu Jan 07, 2010 1:34 am Post subject:

Alright, Ill give it a looksee. Thanks for the help though.