10-30-2022, 12:35 PM
As I understood, there is no way to "hash" an encrypted zip file; rather, the entire compressed file has to be checksummed for each password try. Therefore, if the encrypted file is bigger then 8k, we're out of luck. The zip2john operation basically just converts the binary zip file structure to ASCII but doesn't do any "hashing".
Is this still the case or is there any workaround, maybe using a truncated portion of the original file? Because I've got a ~17MB archive (pkzip2) with just a single file in it and a generously constrained keyspace... Even if hashcat would remove the 8k limit, it won't be feasible to checksum many MB of data for a single guess.
Is this still the case or is there any workaround, maybe using a truncated portion of the original file? Because I've got a ~17MB archive (pkzip2) with just a single file in it and a generously constrained keyspace... Even if hashcat would remove the 8k limit, it won't be feasible to checksum many MB of data for a single guess.