[KeygenMe] T.P.o.D.T #2

[mrexodia]

Hello everyone,

I had some time and in that time I decided to write a small KeygenMe challenge...

You need to find a name/serial combination (multiple serials for one name are possible) and it would be nice if you create a small tutorial and not say: "this is weak because: [list of weak places]" this is not really nice for the users who are still trying to solve it

Don't expect many special things, the only real protection is the (lame) anti-referenced text strings feature.

Solutions (with tutorial) can be send to mr.exodia.tpodt@gmail.com/by pm and will be placed on my website..

Download here (failed to attach)

Greetings,

Mr. eXoDia

PS Forgive me for the GFX, art not my best subject

[ChOoKi]

http://www.2shared.com/file/qsRl3uRn/solution.html

So what's the name of the software?

Thanks for the challenge.

Edited December 18, 2011 by ChOoKi

[mrexodia]

  On 12/18/2011 at 4:39 AM, ChOoKi said:

http://www.2shared.com/file/qsRl3uRn/solution.html

So what's the name of the software?

Thanks for the challenge.

Congratulations! Now could you please tell me which level (1-10) you would rate this...

Greetings,

Mr. eXoDia

[ChOoKi]

Based on my findings

Difficulty : 3/10 (simple yet cheeky, what you find in today's softwares)

Implementation/Code : 6/10

+6 : mixed order of checks

-2 : bug/feature (you decide) @ 0040154C MOVSX EDX,DL

-1 : name box length changing to suite display despite algo shows 40 chrs (10 xors)

-1 : GetDlgItem grabbing 39 of 40 name chrs

GFX : 5/10

SFX : 5/10

I must admit I enjoyed it though, a good exercise especially when coding a keygen for it, so many ways, hard to choose

[ghsafsdfsdhfghfgjhgkj]

Patch:

https://rapidshare.com/files/93992971/Patch_dup2.exe

[ChOoKi]

And a tut. Over & Out...

Tut.zip

Edited December 18, 2011 by ChOoKi

[beBoss™]

Seem hard to me...

[mrexodia]

The original idea is based on a 4x4 sudoku with a 2x2 field in the middle... I have to say the name checksum thing is kinda badly implemented... At first I wanted to do some 2.000.000 round sha+md5 hash which would be the checksum (just like in armadillo) but solving such an algo takes waays to long and therefore I decided to leave that

@Chooki: Thanks for the tut, I'll put it on my website if you don't mind... And you can have the sources if you bother looking at my crappy coded c code

@Mixuss:

Your patch isn't working properly...

@BeBoss: Keep trying, you'll solve it some day..

Greetz,

Mr. eXoDia

Edited December 21, 2011 by Mr. eXoDia

[DimitarSerg]

One man from Russian community reversed it, made keygen and wrote the state about it.

His nickname is Veliant.

http://habrahabr.ru/blogs/asm/134817/

His source:

http://pastebin.com/dQWdgRhS

Edited December 29, 2011 by DimitarSerg

[mrexodia]

  On 12/29/2011 at 2:23 PM, DimitarSerg said:

One man from Russian community reversed it, made keygen and wrote the state about it.

His nickname is Veliant.

http://habrahabr.ru/blogs/asm/134817/

His source:

http://pastebin.com/dQWdgRhS

His tutorial looks interesting (Google translate for life!) great to hear it wasn't too easy

Greetings

[mrexodia]

Attached the keygenme (+ sources).

Greetings,

Mr. eXoDia

KeygenMe2_TPoDT.rar

KeygenMe2_TPoDT_src.rar

[ChOoKi]

A new step-by-step presentation on how to solve this challenge, hope someone finds it useful.

p.s: For further info, please refer to the tutorial posted earlier (above) .

 

@eXoDia: Still waiting here for the name of the software

Sol2014.7z

[mrexodia]

@ChOoKi: I designed the algorithm 100% by myself, so there is no software linked to it. If I recall correctly I found inspiration on a 4x4 sudoku

Greetings