[REVERSING] headache2

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  • This challenge will be the end of me Layle :)

  • Rather the end of me xD

    sig

  • LOOOOOL. mistakes happens all the time, don't worry about it.

  • edited November 2019

    I have absolutely no clue how to even begin tackling this. First thought it was bytecode, then shellcode, then thought it was a bootloader... all dead ends so far. Only hint is an embedded file that seems rust-based.

    Edit: Okay, so I have the flag from the unintended route, but still curious about the intended route since it seems really cool.

    In other news, this thing seems to have a lot of annoying false flags for everyone doing it the intended way.

    Xentropy
    Null | Nada- | Zip | Diddly | Zilch+

  • I'm stuck here too... any hint on how to start this challenge?

    Type your comment> @Xentropy said:
    > I have absolutely no clue how to even begin tackling this. First thought it was bytecode, then shellcode, then thought it was a bootloader... all dead ends so far. Only hint is an embedded file that seems rust-based.
  • edited November 2019

    Do you want a xmas-elf?

    limbernie
    Write-ups of retired machines

  • "xmas" can't find the entry point

  • edited November 2019

    so may i just ask does it run? do i need apple-darwin? all my file scanners say its just a data bin. but gdb says otherwise... tick tock

  • edited December 2019

    I found what is it ! but I am not able to execute it as it should be !

  • how to get started with this ?? i have absolutely no idea pls help :\

  • Look at the hex

  • still not catching ya :\ pm with a nudge

  • I have found something Rusty inside the file and extract it successfully (even though it faults at runtime).
    Now i am stuck analysing the remainder of the hex and the rusty thing at the same time.
    anyone could shed a light?

    badge
    profile: https://www.hackthebox.eu/home/users/profile/114435
    discord: Celesian#0558

  • Alright! Now i found a XMAS present through a quick google search.
    where does this lead to??

    badge
    profile: https://www.hackthebox.eu/home/users/profile/114435
    discord: Celesian#0558

  • pp
    edited January 9

    had fun on the first part, less on the second, I'm curious to read the > @Xentropy said:

    I have absolutely no clue how to even begin tackling this. First thought it was bytecode, then shellcode, then thought it was a bootloader... all dead ends so far. Only hint is an embedded file that seems rust-based.

    Edit: Okay, so I have the flag from the unintended route, but still curious about the intended route since it seems really cool.

    In other news, this thing seems to have a lot of annoying false flags for everyone doing it the intended way.

    I agree with you, first part is cool, the second one is a bit "messy". I'm very curious to see a writeup for the intended way (if there's one) or maybe the author can share it with us in PM :)

    EDIT: the challenge itself is not that difficult, but the way to reach the "standard reversing phase" was interesting enough for the new stuff learned not just about reversing :)

  • Spoiler Removed

  • edited January 12

    It starts alright with the right magic

    joeblogg801

  • Everyone is rating this challenge as easy......is it really that easy? I'm really confused.....

  • So I've managed to get it running, not finished it yet -- but if anyone wants a nudge for the legit way PM me.

  • I tried to extract file from binary file but seems like not right.... so confused. Pls give a hint! Thanks so much!

  • god damn it, @Layle
    idk how this was meant to be solved, but my way sure as hell gave me a headache...

    0x41

  • @0x41 gratz on the solve, DM me your method :)

    sig

  • Solved, very fun but went down so many wrong paths.

    Will give a nudge if you PM

    And yes there are many literal false flags

  • I have "login success" ? false flag too ?

  • Fun challenge , solved
  • i get 55AA. next step, please?

  • What is it -- 55AA?

  • Hey all, I'm a bit stuck atm. I've managed to extract the rust binary from the file. When i try to run it, it seg faults. I don't know much about rust. Can someone give me a hint on where to go from here?

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