Author:
Cappybara

Language:
C/C++

Upload:
11:27 AM 01/13/2025

Platform
Unix/linux etc.

Difficulty:
1.3

Quality:
4.3

Arch:
x86-64

Description

You’ve just run across an old program, seemingly innocent at first. It asks for a password, and if you enter it correctly, you might think you've won. But there's more lurking beneath the surface. Something about this challenge doesn’t add up. The program not only demands the correct password, but also a secret code—one that isn’t easily discovered. Is it hidden within the code? Or perhaps something you’ll have to figure out for yourself? Resources If it's your first reverse challenge, this website should be helpful https://dogbolt.org/ this website tries to decompile the program for you. Other popular tool is ghidra https://ghidra-sre.org/

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donquixote on 4:33 PM 01/21/2025: as a basic learner, this was good. flag -- CTFlearn{W4s_1T_Th4T_H4rd?} pass -- Sup3rS3cr3tP455W0rd code -- 1337 you can also find the pass using strings command

curiocunngios on 9:41 AM 01/27/2025: tick

Cappybara on 2:04 PM 01/31/2025: Thx I'm glad you enjoyed it, wanted to upload it on CTFlearn but the site is dead i guess.

basmannetjeee on 12:14 AM 02/04/2025: From a complete beginner's standpoint: I found the password and code but am *completely* stuck on how to find the flag. Any guidance? P.S great quality, really makes this a lot more doable

basmannetjeee on 12:30 AM 02/04/2025: Nvm - did it! Casually left out 2/3 of the flag lmfao

kaali on 5:25 PM 02/09/2025: good one

false_promise on 3:51 PM 02/13/2025: Its my first challenge ind i can find the flag =) tnx for creating this challenge

Veazamir on 4:10 AM 02/23/2025: Thank you for the challenge, I very much enjoyed it. I had a blast trying to understand how the flag was made - XOR and pointer arithmetic behind the flag array.

c1nnamon on 12:00 AM 02/24/2025: Cracking without a secret code: strings babyrev | grep S Sup3rS3cr3tP455W0rd rizin -A babyrev [0x00001100] pdf @ main | grep "0x1270" │ ┌─ wa "jne 0x1270" ./babyrev Welcome to baby rev challenge Input the password: Sup3rS3cr3tP455W0rd Input the secret code now: i love cappybaras Correct! Here is your flag CTFlearn{W4s_1T_Th4T_H4rd?}⏎

omshingare on 8:34 PM 02/26/2025: Good, as ima beginner in rev eng. This was good, I love to solve such, maybe after this i'll be solving some great questions.

schoolwucks on 7:28 PM 04/26/2025: awesome crackme for beginners

kx05 on 8:16 AM 04/27/2025: straightforward...one look in Ghidra and you can solve it. Great challenge for beginners like me!

Kileris on 4:01 AM 05/20/2025: How do I even run it because in aint a exe file

4lmutairi1337 on 12:49 AM 06/06/2025: Great chall

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