This was a project I worked on in 2003.
The original CVS Repo can be retrieved using the following command
rsync -ai a.cvs.sourceforge.net::cvsroot/dmca/ .
At the core, this tool manipulated a elf32 binary so that it isn't recognizable by libBFD utilities such as gdb, objdump, etc.
Back in the day IDApro also had issues identifying a maladjusted binary.
Sadly, current day IDApro can identify the elf for what it is.
Luckily, libBFD tools are still in the dark!
Shoutout to #MD2600 & Lawless
I still have some tricks up my sleave and I wanted to see what I can do. Sometime in the future I'll return to this repo and continue the research.