Author:
pranav

Language:
Assembler

Upload:
5:00 PM 05/11/2021

Download

Platform
Windows

Difficulty:
1.6

Quality:
4.7

Arch:
x86

Description

A simple crackme that is written on Assembly, but also uses C library and Win32 functions. You are required to 'bring the grid Online'. All needed info is on the readme.txt along with a story for time-pass. A hint is also provided in __guide__optional.pdf, in the form of a guide(not recommended to open first). Do not paste the solution in comments. Upload a writeup. You can post questions and feedback in comments, or also contact me at PranavAppu007 at crackmes.one discord server https://discord.gg/2pPV3yq

• Comments
• Solutions

4epuxa on 6:11 PM 05/14/2021: Awesome and unusual challenge

z3n on 1:38 AM 05/15/2021: lmao i don't even know how to start (first time)

pranav on 1:28 PM 05/15/2021: z3n well although it's L1, it's meant for people learning assembly. However, you can start by finding a good debugger and start analyzing the code.

rxdax on 6:18 PM 06/05/2021: I need a password to access the file

nonorganic on 3:15 PM 06/06/2021: I am new to asm mov ecx, eax not ecx inc ecx If eax = 16, 16 is hex or dec after inc ecx value? And after that in comparing algorithm: what ecx+60h means? I try to add to -16 in hex for example or -11 and i have addresses of variables which i think using in library functions. Sorry if this spoiler :(

nonorganic on 4:17 PM 06/06/2021: (If eax = 16, -16 is hex or dec after inc ecx value?)* mistake

puelo on 6:50 PM 06/26/2021: Great CrackMe. I've learned a lot of new stuff about Ghidra and ASM in general with this. Thanks for that!

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