objobf is an ELF obfuscator written by scut.
https://web.archive.org/web/20040217131820/http://www.team-teso.net/projects/objobf/
This project references a dissertation by Gregory Wroblewski titled “General Method of Program Code Obfuscation”
https://web.archive.org/web/20040218074641/http://www.mysz.org/papers/obfuscation.pdf