If you're lucky, the developers will have used a standard format to store their assets and you can just use an existing asset extractor to do the dirty work for you: Unreal, Unity, and Flash (.swf) are some of the most popular ones. Source: 7 months ago

I recently found an awesome flash decompiler[0] and used it to get around site-locking on some swfs I downloaded years ago. Some swfs require files from the sites they are hosted on but I downloaded them and modified the swfs to find these files on a local server instead. So cool being able to modify the source code whereas back in the day I had to rely on hex editing to invert conditionals. [0] - Source: Hacker News / 11 months ago

You can use "inspect element" on the page in Chrome to find the swf. Once you've got it, you can use JPEXS to dump the sound files. Source: about 1 year ago

But if anyone finds this and is curious, JPEXS decompiler is by far the best option. https://github.com/jindrapetrik/jpexs-decompiler. Source: about 1 year ago

I wanted to change the art that is displayed on the loading screen and wanted to ask if I'm doing it the right way. So far the instructions I've found have directed me to use something called UNREALPAK to unpack the Game.pak file, then look for the loadingScreen.swf file and decompile it with this program. After that I should be able to replace the image and, I assume, recompile and repack the loadingScreen.swf... Source: about 1 year ago

Thanks! This is a great place to start. I also discovered that thieve.co has a tool that allows for a lot of this as well. Source: 7 months ago