downloadbrowseZakne's Crackme:Crackme #2 by ZaKne

Download crackme.zip, 6 kb (password: crackmes.de)
Browse contents of crackme.zip

Crackme
find a serial
make a keygen
upload a solution.

Difficulty: 1 - Very easy, for newbies
Platform: Windows
Language: C/C++

Published: 28. Jun, 2009
Downloads: 1674

Rating

Votes: 3
Crackme is nothing special.

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Solutions

Solution by borut, published 07. jul, 2009; download (5 kb), password: crackmes.de or browse.

borut has not rated this crackme yet.

Solution by stranac, published 04. jul, 2009; download (2 kb), password: crackmes.de or browse.

stranac has not rated this crackme yet.

The submission of solutions is closed.

Discussion and comments

WarRock
28. Jun 2009
uii now bit harder :D
Zakne
Author
29. Jun 2009
it's pretty easy to find a serial for your name, but i need a keygen :)
WarRock
29. Jun 2009
yep if i have time i work on :) ... have done some work :D
Zero14x
29. Jun 2009
will give this one a go 2 :)
Zero14x
29. Jun 2009
umm,when i try it with any name and any key olly says before it reaches strcmp that the EIP address is not readable and the program stays running without any good or bad boy message , is this OS related?
KcDaRookie
29. Jun 2009
Which OS do u have Zero??
On XP SP3 no problem finding a serial for my nick...
Zero14x
29. Jun 2009
i have sp3 :S,and its not an anti debugger trick because in cmd it also stays jammed
WarRock
29. Jun 2009
xp sp2 works great
Zakne
Author
30. Jun 2009
Zero14x i have Sp3 too and no problem to find a serial for my name,i think something is wrong with your ollydbg, or OS.
Zakne
Author
30. Jun 2009
73 downloads and no keygen :|
The So;X
30. Jun 2009
@Zakne i have facing same problem as Zero14x.
The So;X
30. Jun 2009
@Zakne i have same problem as Zero14x.
Zero14x
30. Jun 2009
ok i have tested it on my laptop wich is sp2 and it works fine
i've found a key for my name so maybe i'll try to analyze it and make a keygen for it :)
Zero14x
30. Jun 2009
I know what it is now, its a buffer overflow , probably the generated key is to long for the program to handle , maybe it has something to do with my computer name because its kinda weird :P
Zakne
Author
30. Jun 2009
got it will fix it
Zero14x
30. Jun 2009
ok i'll try to keygen it after its fixed :)
Grepall
30. Jun 2009
I just submitted a keygen.

It just hack the original crackme file by replacing the strcmp call with a printf call.

I think it may not be a qualified KEYGEN. Anyway, I'll try to write the keygen algorithm by myself then.
Zakne
Author
30. Jun 2009
ok i uploaded a new version,fixed bug with buffer overflow,happy cracking:))
Zakne
Author
30. Jun 2009
by the way i had to replace some symbols, so the generation key is diffrent from the privious ,sorry
dakn
30. Jun 2009
done ^_^

modify crackme prg:

00401565| 890C24 |MOV DWORD PTR SS:[ESP],ECX
00401568| 90 |NOP
00401569| 90 |NOP
0040156A| 90 |NOP
0040156B| 90 |NOP
0040156C| E8 9F050000|CALL <JMP.&msvcrt.printf>

enter your name and wrong pwd to see right pwd ^_^
Zakne
Author
01. Jul 2009
paste a solution:)
br0ken
01. Jul 2009
Why are you guys struggling so much?
This one is pretty easy.
Just keep an eye on the big string (abcdef.....) and several smaller ones. ( QMD.W6..J8..D2.S4..B5..and so on..) and trace through the program.
You should be able to make a keygen easily.

PS : If I have said too much, you may remove this comment.
WarRock
01. Jul 2009
then im on the true way :) just need some time lol...busy :S
Horatio
01. Jul 2009
I uploaded a keygen written in python.
stranac
02. Jul 2009
I just made anice little tutorial + keygen. I hope it gets accepted
MCxCodex
02. Jul 2009
I think is better wait the new version uploaded by Zakne.
I wrote tutorial and keygen three days ago, but I prefer don't post until new version will be publicated. Anyway, this version works fine if name entered is <= 44 character
MCxCodex
02. Jul 2009
ops sorry a little mistake. forget <=44.. much less :)
WarRock
03. Jul 2009
shit need solution :S hmmmlol
Zakne
Author
03. Jul 2009
hmmm seems to be the submission of solutions is closed, very sad
:(((
stranac
03. Jul 2009
@WarRock
Here's a short version of mine: http://rapidshare.com/files/251573867/ZaKne_s_crackme__2_solution.zip
WarRock
04. Jul 2009
wow thank u man :)
Zakne
Author
08. Jul 2009
Thank's to all who cracked my crackme and made keygen's, i'll make a another crackme more harder:)))))
Symbol
10. Jul 2009
Oh damn, I'm too late, it's already cracked... :)
My friend sent me this and I keygened it, then I searched for it in here and luckly I found it. :P

Here's a download:
http://www.fileflyer.com/view/pfcsMA8

And source:
http://pastebin.com/f5edbefcd

~Symbol.
dragonuv
19. Oct 2009
im having a problem with the crackme, it reaches this line for me:
77c460c1: mov dword ptr ds:[edi],edx
and i dont know how it reaches there
qHF;
26. Oct 2009
I cracked it and wrote a nice keygen for it. Too bad the submissions are closed. I thought I keygened it right at first but you changed the way the second part of the key was made and I didn't catch it in time. I'll attempt your third crackme soon.
johnnycannuk
30. Aug 2010
Wow..don't do this on a computer with a full name and domain included...my pass was about 100 chars long!

Strong auth eh?

;-)
AdamF
25. Sep 2014
If crackme doesn't work then change line 004012C3
from: MOV DWORD PTR SS:[EBP-1C],10
to: MOV DWORD PTR SS:[EBP-1C],0F

And have a good fun! :)))

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