i am releasing here my pzunpack software do decompress .pack files
Virustotal: https://www.virustotal.com/ru/file/7da8380a5af32c69e552eef1bfbc9f6a2646fdbfd49c72662b14751f517856d4/analysis/1466948014/
Source :
https://github.com/konrad2503
PZDepack.exe