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Thread: Cracking P/W protected .zip or .rar files?

  1. #1
    TexRyker
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    Default Cracking P/W protected .zip or .rar files?

    One of the folks at my work forgot her password to a zip file with some important docs in it. I checked to see if she had any copies of any of the contained docs outside of the zip and there are none. I have been given full permission to try to access this file.

    Can anyone suggest anything I can do to break into this file assuming she used a strong password? Backtrack 3 or otherwise?

    I have tried using some x86 based zip crackers with some password lists I have dug up and no luck as of yet.

    Thanks in advance... please move this if I posted this in the incorrect forum

  2. #2
    Junior Member imported_Yottabit's Avatar
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    Question

    in one terminal type:
    mkfifo crackpipe
    crunch 1 100 abcdefghijklmnopqrstuvwxyz0123456789 >> crackpipe
    in another terminal substitute the wordlist in the .zip cracker for crackpipe.

    it may take a while
    if a solution to a problem is stupid and works, it is not stupid.

    "Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates :rolleyes:

  3. #3
    TexRyker
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    Quote Originally Posted by Yottabit View Post
    it may take a while
    Hmm... might need to find a box I can put some extra ram in and start it up...

    Then check to see if it figured anything out by next month lol

    Thanks for the help!

  4. #4
    JMC31337
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    Quote Originally Posted by TexRyker View Post
    Hmm... might need to find a box I can put some extra ram in and start it up...

    Then check to see if it figured anything out by next month lol

    Thanks for the help!
    yup, sit there, brute-force the file, and come back next X-MAS

  5. #5
    Very good friend of the forum TAPE's Avatar
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    Default

    Did the poster ever get anywhere on this ? I for one would be interested to see what
    was used and how !

  6. #6
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    If the password is half way decent, cracking a file like this is going to take forever. Directions are in post #2.
    ThinkPad T400

  7. #7
    Very good friend of the forum TAPE's Avatar
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    well.. for interest's sake then

    I am having trouble figuring out exactly what is meant in post #2

    Have done quite a bit of searching on the forums and cant find any info on
    how a crack could be actvated on an archive file.

    I presume that a wordlist or the like could be included in one way or another ?

    Sure you can head down to elcomsoft.. but it would be a lot nicer if it can
    be done with command line no ?

    Just interested in the outcome !

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