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Thread: I somehow can't get fcrackzip to work

  1. #1
    Join Date
    Dec 2017
    Ubuntu Mate 20.04 Focal Fossa

    Question I somehow can't get fcrackzip to work

    For reasons I won't get into, I want to at least try to crack some encrypted zip files on my computer. No problem, I thought, I'll simply install fcrackzip (through synaptic). So I did. I tried it on one of the files, in brute-force mode. Of course, for any chance of success, I'd need patience.

    But after a while, I decided to test it, simply to see how it would look like if it found a password. So I made a little nonsensical test file and encrypted it as a zip archive with the worst password I could think of at the moment - the word "fish" (without the quotation marks). I tried a brute force of passwords with up to for letters:

    It found the text file inside, and told me it was testing all kinds of passwords, but the entire run didn't result in finding the password. But it must have tried "fish" during that run, so why didn't it crack the file?

    Then, for a dictionary attack, I made a little text file consisting only of the word "fish", and used that:

    Again, no result. Apparently, I am doing something wrong, but I have no idea what it could be. Any ideas?
    Last edited by QIII; August 4th, 2020 at 11:28 PM.

  2. #2
    Join Date
    Jul 2008
    The Left Coast of the USA

    Re: I somehow can't get fcrackzip to work

    Please refer to the Ubuntu Forums Rules, specifically:

    Cracking: Requests for help about any form of password or encryption "cracking" are not supported. Even though there are packages such as aircrack in the repositories, discussions about cracking or software related to cracking often lead to discussions about illegal activities. Such threads will be closed.
    Thread closed.
    Please read The Forum Rules and The Forum Posting Guidelines

    A thing discovered and kept to oneself must be discovered time and again by others. A thing discovered and shared with others need be discovered only the once.
    This universe is crazy. I'm going back to my own.

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