Author:
NomanProdhan

Language:
C/C++

Upload:
3:47 AM 02/12/2022

Platform
Unix/linux etc.

Difficulty:
1.8

Quality:
4.1

Arch:
x86-64

Description

This binary is for beginners to practice reversing. Don't patch the binary, try to create a keygen to solve it.

• Comments
• Solutions

Shelldon on 12:49 PM 02/16/2022: Very easy crackme. Thanks!

bartp on 3:36 PM 02/17/2022: Enjoyed solving it =)

Q8U on 10:19 PM 02/18/2022: password file zip ????

dev0 on 11:49 AM 02/19/2022: I believe there is a subtle bug in this. Use a key with a 1 or 0x31 byte value as the last letter and see what happens. It appears the address space between the byte for the character and unsigned int are problematic when using the atoi function.

_Umiko on 1:23 PM 02/24/2022: This crackme was pretty hard to solve as a complete beginner :)

ne0n_c4lic0 on 5:27 PM 02/27/2022: Great binary, keep them coming NomanProdhan!

Shreyas on 8:45 PM 03/17/2022: Easy and Well Done

qwertyspark1 on 8:08 PM 03/25/2022: Confirming dev0's comment. There is a small bug. If the code ends in 0, 1, or 2, then the program does not recognize it as a valid license. Otherwise, works great! A fun challenge.

NaNraptor on 1:37 AM 04/03/2022: Thirding the issue with 0, 1, 2 as the last char causing invalid key. Fun challenge otherwise

abspwr on 10:17 PM 05/04/2022: This is the same binary like one posted here by different guy https://crackmes.one/crackme/62327b0433c5d46c8bcc0335.

jjsimpson on 5:49 PM 09/19/2023: Done, really cool challenge

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