downloadbrowseblzbb's Keygenme#1.BlZbB

Download Keygenme#1.BlZbB.zip, 1 kb (password: crackmes.de)
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this is a my first and very simple keygenme
i write in assembly language
so i hope newbie like myself to RE enjoy it ;)

the goal is writing a keygen
serial not unique, it's mean every
user have more than one correct serial

BlZbB

Difficulty: 1 - Very easy, for newbies
Platform: Windows
Language: Assembler

Published: 23. Jan, 2010
Downloads: 1362

Rating

Votes: 6
Crackme is nothing special.

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Solutions

Solution by Dionosis, published 01. feb, 2010; download (36 kb), password: crackmes.de or browse.

Dionosis has rated this crackme as quite nice.

Solution by DjH2oo7, published 26. jan, 2010; download (30 kb), password: crackmes.de or browse.

DjH2oo7 has rated this crackme as quite nice.

Solution by electrofant, published 26. jan, 2010; download (875 kb), password: crackmes.de or browse.

electrofant has rated this crackme as quite nice.

The submission of solutions is closed.

Discussion and comments

fenoloji
24. Jan 2010
Name: fenoloji
Serial: 12-D98E-C4DF
Dionosis
24. Jan 2010
Ok for me, I'll write a solution + keygen.

Name: Dionosis
Serial: :)-898E-34DF
electrofant
24. Jan 2010
Very nice for newbies like me ;)
I have submitted solution and keygen
blzbb
Author
24. Jan 2010
thanks to work on my keygenme
i wait for your solution and keygen
DjH2oo7
25. Jan 2010
After three years I returned to reversing. This keygenme was a good start, thank you. I have sent my solution with keygen.
manivelox
25. Jan 2010
mnvlxxx
12-CB8E-74DF

Nice!
Dionosis
25. Jan 2010
Ow, I just figured out a point with some special names.
I correct my solution and send it again. :)
DigitalAcid
26. Jan 2010
DigitalAcid
DA-FF8E-F5DF
blzbb
Author
26. Jan 2010
@Dionosis, @DjH2oo7, @electrofant thanks for your solution.
next time i try to make keygenme a little harder.
Dionosis
30. Jan 2010
Hi,

I took time this evening to write the new solution I was talking about.

It fixes the long names problem :
Name: DionosisDionosisDionosisDionosisDionosisDionosisDionosisDionosisDionosisDionosis
Serials : SR-AFEE-18DF or CO-41EE-78DF or FJ-C1EE-D8DF ...

And it fixes the accentuated names problem :
Name: NoëlCéBo
Serial: XP-198E-74DF

And of course it fixes also the long accentuated names problem.

Just look at the new "Going further" section, and the new C source code.
blzbb
Author
30. Jan 2010
well i guess no one have more than 80 char name. :)
corte
08. Feb 2010
Nice one! First keygen I've ever successfully created :).

Name: corte
Serial: 1--F18E-64DF
madmaurice
12. Jul 2010
@Dionosis
How can 1 name have several serials?
the serial is calculated from the ascii values of the username.
sure there are several usernames that have the same serial, but afai can see every username has only one serial.
eltiren
22. Jul 2010
Nice for me.

eltiren
00-0C8E-E4DF
ladyskill
25. Nov 2010
oh yeah!
you can make many serial from one name:
EX: abcdef
serial 1: 12-9F8E-34DF
serial 2:21-9F8E-34DF
.....
pluxi
11. Jun 2012
Phew. I figured out the algorithm in C just now and about to make the keygen. I have to say that this was pretty confusing considering this is my 4th keygenme that I solved. The first algorithm you run across is rather convoluted and confusing and took me maybe 10 minutes to figure out what it was doing. And the way the functions are laid out was a little confusing as well, but the actual hashing algorithm isn't difficult to understand.

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