[Reversing] Nostalgia

Hi all, very good Challenge :)

HTB{HappyHacking}

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  • Any resolve this yet?

    HTB{HappyHacking}

  • edited May 2020

    My advise is to use an emulator with a built in debugger. I used mGBA. If emulator does not work check that you have opengl installed and check video settings in the emulator. I spent ages before the emulator started to work as expected.

    EDIT: no$gba debugger appears to be alright as well

    EDIT2: tried https://github.com/SiD3W4y/GhidraGBA plugin for ghidra, it works alright

    joeblogg801

  • I just solved it in an unintended way using NO$BA debugger on windows, now I'm trying to understand the right way to solve if someone want to discuss it can PM me

    Hack The Box

  • :) thanks dudes, it's works

    HTB{HappyHacking}

  • Hi guys, if you're interested or like to reverse more GBA ROMs. I tried to write a Ghidra loader which additionally parses the header structure of GBA ROM files. :)
    https://github.com/pudii/gba-ghidra-loader

  • hi all;
    as you advised, i have tried:

    mGBA
    no$gba
    

    as emulators.
    And tried both IDA Pro and Ghidra with the given loaders above. The only thing that i have come so far is the video memory address of the letters that printing on!

    When you press one of the buttons of the console -like a or b- it prints itself on screen. My question is; do i need to find the "right sequence of buttons" then press enter to get the flag??? Am i right or i am missing something?

    Thank you =)

  • hello guys again
    any hint/help will welcome
    i really stuck on this!

  • Ok finally pwned
    https://github.com/pudii/gba-ghidra-loader
    ghidra loader is better then the ida pro loader

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