Software Repcking?? Very likely commercial methods available in 20 years and via called in NetOpsystem FEAD Optimizer... Widely used old times via Adobe Reader and McAffe VirScan installers.. (and more programs?)
First versions called in: FEAD Recomposer / FEAD II Optimizer (2002 to ~2006-2007)
Next called in: NOSSO (~2007-08? to 2015-2017?)
Last called in: bitWrapper (2015 to 2023)
Totally unavailable, not leaked the whole programs.
Discussions:
https://encode.su/threads/140-Nosso-...ion-technology and
https://encode.su/threads/323-Chasing-NOSSO
Documents:
http://web.archive.org/web/200603140...AD(R)_1004.pdf
http://web.archive.org/web/200212112...p?topic=feed_e
http://web.archive.org/web/200608111...ish/index.html
This FEAD compression techniques used in many game demos/trials called in FEED from circa ~2005 years to unknown times... Likely find "FEED SFX"-ed package any demo games and compare it latest repack techniques.