[STEGO] Image Processing 101

Can anybody gime me a hint for this stego challenge? I have tried almost everything but still no results...

Comments

  • Following with interest! As the challenge description says, this ain't no script kiddie one.

  • Type your comment> @davidlightman said:

    Following with interest! As the challenge description says, this ain't no script kiddie one.

    Sure

  • I saw something suspicious around the edges of the image but I can't put my finger on it. Also, I can't seem to find any images on reverse image search engines that matched its dimensions.

    limbernie
    Write-ups of retired machines

  • I also noticed the strange squares...

  • don't try extract the flag with a simple tool may be need search for many methods of steganography like FFT, in this way you know how to proces the image and got the flag.

    this challenges isn't for 20 point :)

    Try Harder!

  • edited October 4

    @Mataya said:
    don't try extract the flag with a simple tool may be need search for many methods of steganography like FFT, in this way you know how to proces the image and got the flag.

    this challenges isn't for 20 point :)

    Try Harder!

    Excellent hint

    limbernie
    Write-ups of retired machines

  • I've managed to get some kind of flag in HTB{} format.
    Not sure if I'm not typing it correctly or it's a rabbit hole and I should go deeper?
  • Edit:
    Not a rabbit hole. Just me typing badly.

    Got the flag.

    PM me for hints.
  • edited October 4

    Thanks @joshibeast for the nudge. This challenge is too obscure for just 20 points, I have struggled more with this challenge than "Massacre" or "Not Art".

    EDIT: I think I should just refer to Mataya's comment, it's all you need.

    @Mataya said:
    don't try extract the flag with a simple tool may be need search for many methods of steganography like FFT, in this way you know how to proces the image and got the flag.

    this challenges isn't for 20 point :)

    Try Harder!

  • Thanks @joshibeast for the hint. Too difficult for 20 points IMO.

  • can someone confirm my flag?

    azeroth

  • Just submit your flag, if it is accepted than the flag is good :-)

    HKLM

  • i am not able to find the flag i did almost everything can anyone give a some kind of hint

  • If anything i just had a hard time reading it!!! lol But i am curious if anyone will PM me if that used a certain program that if they had problems installing on linux? this was what i spent all my time on. because i wanted to be able to have a plugin run properly and it never worked! so i used an alternative to solve it.

  • edited October 13

    I got the HTB{} flag but I'm having trouble reading it so I'm apparently typing it in wrong. Can someone PM me to help? I'll PM what I think it's saying

    EDIT: Nvm I got it. For anyone else having trouble reading it, try doing some image enhancements. Maybe "re-exposing" it might help.

  • Not sure if anyone else went the python scripting route, but I just used a single function in a python scipy package. Worked great. Nice, simple challenge.

    snuggles

  • I'm totally lost here. Not even the FFT hint helping out here.

  • Wasted 30min for this because of misleading hint with not to be a script kiddy. For every one here is the hint: Be a script kiddy

  • edited October 20

    Got this one. kinda easy if you have the right tools. like @Tristate said...

  • edited October 30

    well i am completely stuck. steg***vle didnt say to me anything so i decided to search for some hidden files. with bin***k i have figured that there is some z**b ar***ve, but i cannot decompress it due to some header (i guess) error.
    am i in a rabbit hole?

  • @HolyPanda said:

    well i am completely stuck. steg***vle didnt say to me anything so i decided to search for some hidden files. with bin***k i have figured that there is some z**b ar***ve, but i cannot decompress it due to some header (i guess) error.
    am i in a rabbit hole?

    Sometimes binwalk just gives false positives.

  • Well, what can I say? As someone else said, be a script kiddie. Or think about FFT. Easy and quick challenge.

    Sociaslkas

  • is there any guide how to use these stego scripts? im total newbie in stego :/

  • This was simple with the fft hint..

    Hack The Box

  • @mikensen 0xrick has this pretty good list of which can be refered to in general. i am not sure it will help you much in this one, but its worth bookmarking

    https://0xrick.github.io/lists/stego/

    -All hail the Potato-

  • edited December 2

    Ok, after FFT hint I though I found the solution, but the text is almost unreadable and it is very difficult to distinguish various letters because the text is really confused..... am I missing something?

  • @Ketil thank you very much, very helpfull link!

    im trying to find something like that about FFT, any ideas ? some good tools or smthng?

  • Very nice challenge, interesting use of tools and technology. :)

    Thanks for the tips!
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