downloadbrowser00ster's CrackMe #01

Download cm001.zip, 2 kb (password: crackmes.de)
Browse contents of cm001.zip

This crackme is really easy, i had written it for those who are making their first steps in the world of reversing. Those are the rules:

1. Please, try to find a valid serial instead of cracking it

2. There is a "bug" in this crackme that will prevent good-boy message in a certain condition. You must discover it and explain how it works.

3. OPTIONAL: write a keygen

I hope you will have fun!

Difficulty: 2 - Needs a little brain (or luck)
Platform: Windows
Language: Assembler

Published: 03. Apr, 2008
Downloads: 651

Rating

Votes: 4
Crackme is nothing special.

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Solutions

Solution by _HellDashX_, published 12. dec, 2008; download (8 kb), password: crackmes.de or browse.

_HellDashX_ has rated this crackme as nothing special.

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Discussion and comments

DigitalAcid
04. Apr 2008		Found the valid serial for my name ;).
Pretty easy algorithm.
Also found the bug.
Weird place to have a bug there.
I think i know why it happens =).
r00ster
Author
04. Apr 2008		Yeah, i think it was the easiest algorithm possible. As i said, it was just for starters, totally a no-match for seasoned reversers :-)
jvwarrior
10. Apr 2008		Hey I'm Nooby and have no clue how to disassemble this. Dot Net desnt work so I tryed Olly but I got no idea how to use it!!! AHHHH
r00ster
Author
10. Apr 2008		@jvwarrior: yea, it isn't written in .NET, as you can see is in ASM. I suggest you to read some papers about Olly, using it isn't so difficult.
indivisible_int
12. Apr 2008		I think using IDA and Olly together will be useful
apuromafo
13. Apr 2008		im noob but i think that is done, Your solution to this crackme is being reviewed by moderators.

but my english is basic sorry if are acepted..
indivisible_int
13. Apr 2008		my English is sorry too(heh-heh), but I can write it French or Russian :)
Crackme is really simple, but it is good practice for keygenning
apuromafo
13. Apr 2008		Your solution to this crackme is being reviewed by moderators.
SlayerOtf
14. Apr 2008		i sent an solution, it past one day but no answer
apuromafo
14. Apr 2008		maybe wait more solutions for not copy xD
r00ster
Author
22. Apr 2008		@indivisible_int: thanks for your appreciation ;-)

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