yariza's SHA256 = Secure?

Author:
yariza

Language:
C/C++

Upload:
2023-03-26 20:23

Download

Platform:
Unix/linux etc.

Difficulty:
4.5

Quality:
3.5

Arch:
x86-64

Downloads:
14

Size:
16.20 KB

Writeups:
0

Comments:
7

Description

Since i used SHA256 to generate my keys, no one should be able to crack my program now!

Comments (7)
Writeups (0)

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brugne92 on 2023-03-27 17:20: Useless, file is not even an executable

yariza on 2023-03-27 17:52: Maybe you should take a look at the info of the crackme where it says "Platform: Unix/linux etc", not windows, not mac, Linux

RedXen on 2023-03-28 12:00: Nice try ;). I actually once made an app with a license system that generated the keys using the input username and SHA256. Very bad idea. I only took the substring of the hex of it for first 15 characters too lmao.

alexisreen0 on 2023-03-31 14:17: can you give more ideas how to approach your problem?

oijfiweojfowe on 2023-04-23 22:56: it's my first time doing ctfs, please help me hahaha i'm using ghidra, tought to create a python script to generate the key, what am i doing wrong? https://pastebin.com/jAQuw0LH

mdenials on 2023-04-28 15:31: Cracked, because the HEAP contain PLAIN TEXT KEY

friday on 2025-05-25 06:19: set a breakpoint just after function call. then examine the registers. (eax/rax holds the return value). correct me if i am wrong.

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crackmes.one

crackmes.one

yariza's SHA256 = Secure?