Medium Live

The Keymaker

50 points

22 Solves

Forensics

Medium

kcbowhunter ctflearn++ badge

Community Rating: 4.42 / 5

Jpeg comments can be very interesting.

First 10 Solvers


  • Noxtal

    Really cool challenge! There should be a lot more like that!

  • emo94

    any hint for what is iv and K?

    • kcbowhunter ctflearn++ badge

      you can DM me on Twitter for help, @kcbowhunter... otherwise how far did you get reading the comment blocks? The comments explain how to decode iv and K from within the jpeg

  • Caillou

    Protected

    [REDACTED] This comment is only shown to users who have solved this challenge.

    • kcbowhunter ctflearn++ badge

      https://wiki.openssl.org/index.php/Enc has information on using openssl enc with AES 256 CBC, I am also on twitter @kcbowhunter

      • Caillou

        Protected

        [REDACTED] This comment is only shown to users who have solved this challenge.

    • Caillou

      Where are you stuck? Did you understood the topics "hint"?

      • Dylanwu

        I found CTFlearn{TheKeymakerIsK00l} at the comment of the picture if that's what the hint is about. But it is not the correct flag.

        • Caillou

          You should check the others jpeg comments