downloadbrowselilcw's just a simple xor encryption

Download crackme.zip, 7 kb (password: crackmes.de)
Browse contents of crackme.zip

get the magic keyword!
all you need to do is find the password =]

and yes its tested and its working fine!

Difficulty: 3 - Getting harder
Platform: Windows
Language: Assembler

Published: 28. Sep, 2007
Downloads: 564

Rating

Waiting for at least 3 votes
(we have only 2).

Rate this crackme:

Send a message to lilcw »

View profile of lilcw »

Solutions

Solution by simpleuser, published 09. oct, 2007; download (3 kb), password: crackmes.de or browse.

simpleuser has not rated this crackme yet.

Solution by MR.HAANDI, published 03. oct, 2007; download (425 kb), password: crackmes.de or browse.

MR.HAANDI has not rated this crackme yet.

Submit your solution »

Discussion and comments

XzzX
28. Sep 2007
You can assemble everything you want at 4012DB with the right password.
So how should I find out what you want?
Since you use the password for encryption commonness analysis won't help either.

ec2b8a6264 as string assembles "call ExitProcess".
lilcw
Author
28. Sep 2007
anything isnt correct at all
you only got the chars you can insert with your keyboard
and just 1 pw shows a msg ;]
TiGa
28. Sep 2007
This is why the difficulty was reduced from 9 to what it is now, because of all the "workaround" solutions possible.
XzzX
28. Sep 2007
Oooh i can input many chars via alt+num ;-)
So if you tell me what you want I can tell you the corresponding password. ;-)
lilcw
Author
28. Sep 2007
like i said: get 'the magic keyword'
just try to find it =]
sd333221
28. Sep 2007
Is it longer than 4 chars?
I maybe write a bruteforce solution if not..
Because 4 chars lowercase+numbers are already
approx. 2.560.000 possible Solutions, no chance to bruteforce something like 6 characters
sd333221
28. Sep 2007
>and just 1 pw shows a msg
I don't think that... :-)
MR.HAANDI
28. Sep 2007
haha, too easy, and the author actually thinks that nobody will ever (whenver ever) know anyway ;)
to solve this you don't need to bruteforce.
MR.HAANDI
28. Sep 2007
*btw I think I will describe the author's mistakes in a detailed tutorial ;)
sd333221
28. Sep 2007
MR.HAANDI, I think I know what you mean, but does your key consist of letters from a-z & 1-9?
Greetings
sd333221
29. Sep 2007
Did you search for the password by looking for the known pattern to the jump to?

"push 0"
"Call messageBox"
MR.HAANDI
29. Sep 2007
yes, that is exactly the right point to start ;)
lilcw
Author
29. Sep 2007
hmm actually u dont need to bruteforce
since those ppl rated it level 3 i gave some hints that will allow to solve it without any bruteattack

pw is 18 chars
a-z 0-9 only ;]
lilcw
Author
29. Sep 2007
mr.haandi: i removed your entry since i dont think we want to spoil too much at all ;]
human_thought
30. Sep 2007
typical smc crackme with key used in decryption.

nice attempt though,i suppose you just need to form a messagebox,which is pretty trivial.

Smc along with seh really can create great protections, watch at +q's references for that purpose.
lilcw
Author
30. Sep 2007
what does smc mean ?
cyclops
Moderator
30. Sep 2007
smc==self modifying code!
lilcw
Author
03. Oct 2007
MR.HAANDI: congrats =]
want one crypted with the other options enabled?
like encryption of the original app, iat faking and some anti debugging?

You may leave your comment, thoughts and discuss this crackme with other reversers here.
Acting childish will not be tolerated.
HTML and such will be left as-is, so don't try.