lodsb's Grandfather Clock

Author:
lodsb

Language:
C/C++

Upload:
2021-06-29 19:30

Download

Platform:
Unix/linux etc.

Difficulty:
2.8

Quality:
4.9

Arch:
x86-64

Downloads:
24

Size:
6.39 KB

Writeups:
5

Comments:
8

Description

Just a classic reverse engineering CTF, grab the executable, figure out how it works, decrypt the flag. Source code included.

Comments (8)
Writeups (5)

You must be logged in to post a comment

pr0fdr4c on 2021-07-04 09:32: Good oscillations of harmony there!

dev0 on 2021-07-04 17:46: Interesting little twist and algorithm used.

ghsi10 on 2021-07-13 18:41: very nice one :) thanks

Wolfgang7 on 2021-08-01 10:39: Very easy, but nice!

chillywilly on 2021-08-04 02:13: Clever algorithm! Struggled a bit, but really enjoyed this one :)

BitFriends on 2021-09-14 13:05: nice and easy

amitsirius on 2021-10-29 10:31: reverse and hop

MM on 2022-01-16 17:59: great fun doing that! thanks!

You must be logged in to submit a writeup

Solution by dev0 on 2021-07-04 17:44:
Write up with a C source solution.

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Solution by shinlos on 2021-07-08 13:53:
write up with ghidra decompilation

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Solution by jixun on 2021-07-11 18:09:
half reverse, half guessing...

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Solution by MANA624 on 2021-10-16 17:56:
A slightly different flavor than many of the other puzzles. You can be highly analytical, or do a little guesswork. Either way it's rewarding

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Solution by MM on 2022-01-16 17:59:
Write-up for the challenge with disassembly by radare2

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crackmes.one

crackmes.one

lodsb's Grandfather Clock