Friday, June 26, 2020

Real Time Corruptor automation?




Corruptions, corruptions, corruptions. They can happen everywhere at the most critical moment, like copying important financial data from one place to another. But with backups we are safe, yay! But this is not about backups...

So what is Real Time Corruptor (RTC for short)? It's a piece of software that hooks into an emulator's* memory and modifies random bits to some other bits making the game run in unstable way and, in the worst case scenario, crash completely.

This is how it looks like:


But it's not about RTC either, it's about how you could possibly automate (or integrate) it with something that is not just "Start Auto-Corrupt". Well, with the magic of programming you can.

Lately I wrote a small console APP in C that can run desired intensity level by running this APP with a numeric parameter, being that intensity. "What for, you still need to run it manually," you may ask. Well, that's not really the case if you develop something else as well that can run shell APPs. For that Python is helpful. Without much of a hassle one can create Python script to run that application on a command, but what for? Python can be integrated in a lot of tools... *cough*  streaming software *cough*... and then controlled through those means for something outside triggering it to happen - there are those sensor things to developer boards. How about reading loudness and putting that as a corruption. What? You can do that? Yes!

Unfortunately both tools (the APP and the script) are currently closed-source and private, because they were developed with some purpose in mind (no, I'm not revealing it at this point). Buy hey, I can guarantee you that I had it working as a proof-of-concept. Don't believe me? Fine.

And no, I used plain C, not Autohotkey (hint, hint).


* - note that emulation in some countries may be banned. Always use the title you owned and the hardware you owned if you really need to do that (there is just no other way to test how game acts during corruption process)

Editing AHX music

 

This is what editing music in AHX format looks like. AHX are small files created in this tracker that gives the tune this unique chiptune vibe to it. In this tracker, however, you can define multiple notes and effects as an instrument itselfl, making those chiptune-like vibrations just by using the final, desired notes in tracker later without any other effects added (if you wish to).

If you want to try it yourself you would need an Amiga computer with hard drive installed or means to run it in software.

1. You need the proper Amiga running for this, I used Amiga 1200,
2. Connect hard drive to it and boot Workbench 3.0 floppy disk installing it on your hard drive,
3. Download AYS-A233.LHA from ahx and extract the archive,
4. Copy extracted files to your Amiga hard drive,
5. When in workbench, open the hard drive, pick view all files from menu (just browse a bit, you will find it),
6. Browse to the directory with AHX installed and double-click AHX-68000 (or AHX-68020 if you have an Amiga with suitable CPU for that),
7. You should be ready to go.

Remember that right mouse click shows menu on Amiga computers.

Sorry for not being detailed enough, I wanted to keep it brief, so you try and figure it out. I think it's always good to learn by trying things by yourself too, not just doing step-by-step instructions.

Also a small update, I minimized the amount of ADs to a minimum, because I hate those lagging sites that even on my Ryzen work like piece of junk... I hope it's OK to keep at least a bit of that content, right? We have those distractors everywhere nowadays... Oh, look... ADD... :)