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Thread: Making Crunch create random non repeating letters

  1. #1

    Making Crunch create random non repeating letters

    Hi,
    Basically, what im trying to do (and failing miserably) is make Crunch create random letters in a way that they dont repeat in the 8 digit password.
    I am piping the wordlist directly into Aircrack-ng and my problem is that i can only get it to output :

    AAAAAAAA
    AAAAAAAB
    AAAAAAAC
    ... and so on

    Whereas, what im really looking for is:

    HFVLUSAR
    PUNGDCVN
    WFUNCJLT

    Doing the wordslist the way i am only able to output, it will take 30 days just to check every possible password beginning with the letter A and another 30 days for B etc.......(@3000 keys per second)
    I figure doing random, non-repeating words may be a faster solution.

    This is the command im issuing:

    Code:
    crunch  8  8  ABCDEFGHIJKLMNOPQRSTUVWXYZ  -t  @@@@@@@@  |  aircrack-ng  --bssid  00:11:22:33:44:55  -w-  UPC925.cap
    Can anyone help me with this?

    Thanks in advance

  2. #2
    Join Date
    2013-Oct
    Posts
    321
    Quote Originally Posted by TTG TriCkSh0tZz View Post
    Hi,
    Basically, what im trying to do (and failing miserably) is make Crunch create random letters in a way that they dont repeat in the 8 digit password.
    I am piping the wordlist directly into Aircrack-ng and my problem is that i can only get it to output :

    AAAAAAAA
    AAAAAAAB
    AAAAAAAC
    ... and so on

    Whereas, what im really looking for is:

    HFVLUSAR
    PUNGDCVN
    WFUNCJLT

    Doing the wordslist the way i am only able to output, it will take 30 days just to check every possible password beginning with the letter A and another 30 days for B etc.......(@3000 keys per second)
    I figure doing random, non-repeating words may be a faster solution.

    This is the command im issuing:

    Code:
    crunch  8  8  ABCDEFGHIJKLMNOPQRSTUVWXYZ  -t  @@@@@@@@  |  aircrack-ng  --bssid  00:11:22:33:44:55  -w-  UPC925.cap
    Can anyone help me with this?

    Thanks in advance
    Code:
    crunch  8  8  ABCDEFGHIJKLMNOPQRSTUVWXYZ  -t  @@@@@@@@  |  perl -ne 'print unless /([A-Z]).*\1/' | aircrack-ng  --bssid  00:11:22:33:44:55  -w-  UPC925.cap
    
    or
    
    crunch  8  8  ABCDEFGHIJKLMNOPQRSTUVWXYZ  -t  @@@@@@@@  | perl -ne 'print unless /([A-Z]).*\1/' > wordlist.txt

    The perl command "perl -ne 'print unless /([A-Z]).*\1/'" will remove all lines that have repeated characters.

    Hope that helps.
    Last edited by slim76; 2014-07-10 at 15:48.

  3. #3
    Hi there!
    Thanks for replying but im still getting the same output.
    Ive tried the exact code that you have displayed and ive played around with it but to no avail.
    Is it just that Crunch cant do that?

  4. #4
    Join Date
    2013-Oct
    Posts
    321
    Quote Originally Posted by TTG TriCkSh0tZz View Post
    Hi there!
    Thanks for replying but im still getting the same output.
    Ive tried the exact code that you have displayed and ive played around with it but to no avail.
    Is it just that Crunch cant do that?
    There must be some sort of problem with your setup or you're doing something wrong, the above commands work for me.

    Sorry I couldn't be more helpful.

  5. #5
    No worries, ill keep tinkering with it
    I really appreciate the help!

  6. #6
    Join Date
    2016-Oct
    Posts
    1
    Hi,

    Forgive me for reviving this thread, I'm unable to post this question in its own topic, and it is sort-of similar to this post.

    I am trying to generate a wordlist in crunch for a very specific purpose, but haven't quite worked out what parameters I would require to achieve it.

    I'm trying to acheive a similar result to the OP, with some specific parameters I have no idea how to filter out.

    My desired parameters are as follows;

    - 8 characters
    - UPPER CASE Alpha
    - No character repeated more than twice, anywhere.
    - No more than 3 characters in alpabetical order.

    For example, the following examples would be incorrect;

    OOOIRFCP - Contains a string of consecutive characters that are the same
    AUAIEAOC - Contains a character which features more than twice
    ACWVABCD - Contains a string of 4 characters in alphabetical order

    The following examples would be correct;

    WVABVSTD
    ODBIRFCP
    AUAIEWOC
    TCWAYBES
    CWVYCDDQ

    The best I've been able to do thus far is create a list which repeats no characters and produces results like;

    ABCDEFGH
    ABCDEFGI
    ABCDEFGJ
    ABCDEFGK
    etc..

    But for obvious reasons I would like to eliminate results like those, but also include results which may feature one double character e.g. AA or a character that features twice e.g. AUAIEWOC.

    Forgive me if I've over-complicated this explanation, I'm trying to translate this into a string which will be understood by crunch and I'm having a hard time of it.

    Any help would be much appreciated.

    Thank you!

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