I am trying to recover a 7z file, but have forgotten the password. It's completely AES-256 encrypted (i.e. not even the filenames are available).
- Generated hash file with
- Ran a mask attack using
hashcat -a 3 -m 11600 my.hash masks\rockyou-7-2592000.hcmask
- After ~55 hours, hashcat completed with status
- The password identified in the
hashcat.potfileis rejected by 7-zip
I found a discussion on hash collisions with old Office files here: https://security.stackexchange.com/a/211924
Is 7zip similarly vulnerable to hash collisions?
I would just try the steps in the linked post and see if I could generate more passwords, but given it could tie up my GPU for weeks, I'd appreciate any thoughts!