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Riddled History: Hash Cracking and Reverse Engineering Challenge

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  • cycloneC Online
    cycloneC Online
    cyclone
    Admin Trusted
    wrote on last edited by
    #1

    Title: Riddled History
    Author: cyclone
    URL: https://github.com/cyclone-github/challenge/tree/main/RiddledHistory
    Description:

    • A fun challenge consisting of 4 main sets of challenges, each with their own set of hints, riddles and quests.
    • Challenge contains hints of fairy tails, classic movies and American history, all incorporated into hashes, encrypted files, and finishes strong with a simple, but challenging, reverse engineering "capture the flag".

    Experience Required:

    • hash cracking = Beginner / Intermediate
    • reverse engineering = Beginner / Intermediate

    Sysadmin by day | Hacker by night | Go Dev | hashpwn
    3x RTX 4090 3x RTX 2080ti
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    • A1131A Offline
      A1131A Offline
      A1131
      Trusted
      wrote on last edited by
      #2

      Funfacts in a fairy-tale atmosphere on this challange. I managed to break a few file hashes, although Dorothy's spreadsheet was not for me to look at... Just as well to see the contents of 100 SHA1-like hashes was not for my sensitive eyes. I did get to the july4th.bin file, but I have the system misconfiguration that I was unable to read the flag too. Should I try to decompile/recompile binary on a software so praised by the NSA? I rathergive up.

      Amateur of mycology and hashcracking | 1x3060Ti | 1x1050Ti
      PGP:4B0A386530D789157435DC7489138FB52FDD7FC1

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      • cycloneC Online
        cycloneC Online
        cyclone
        Admin Trusted
        wrote on last edited by
        #3

        july4th.bin hint:

        Decompiling is a great way to fine the flag. You're probably just a few digits off.

        Sysadmin by day | Hacker by night | Go Dev | hashpwn
        3x RTX 4090 3x RTX 2080ti
        Forum Rules

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        • A1131A Offline
          A1131A Offline
          A1131
          Trusted
          wrote on last edited by
          #4

          Tempting, but I'm going by the rule 'measure your strength by your intentions'. I am not familiar with software code and I think I will stay with my hobby of simpler hashes.

          Amateur of mycology and hashcracking | 1x3060Ti | 1x1050Ti
          PGP:4B0A386530D789157435DC7489138FB52FDD7FC1

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          • cycloneC Online
            cycloneC Online
            cyclone
            Admin Trusted
            wrote on last edited by
            #5

            Decompiling is pretty simple on july.bin, but you can also check the walk-through which contains its source code and also hash:plains for the challenge.

            Here's an online decompiler for july.bin:

            ||https://dogbolt.org/?id=f4642a6c-6910-47b5-9e54-283666003716||

            Sysadmin by day | Hacker by night | Go Dev | hashpwn
            3x RTX 4090 3x RTX 2080ti
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