downloadbrowse__imp__'s GeoMe

Download GeoMe.zip, 3 kb (password: crackmes.de)
Browse contents of GeoMe.zip

Well, this is yet another my crackme, though completely different from the previous ones.
Now your task is:

1. Draw a correct polygon.
2. Describe a class of correct polygons.
3. Write a tutorial.

Rules:

No patching!

How to use:

The left mouse button click places a vertex, the right button click checks the polygon.
All vertices are connected automatically in the order you've placed them.

Have a good cracking day!

__imp__

Difficulty: 4 - Needs special knowledge
Platform: Windows
Language: Assembler

Published: 29. Oct, 2007
Downloads: 442

Rating

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(we have only 1).

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Solutions

Solution by Trundle, published 18. nov, 2007; download (192 kb), password: crackmes.de or browse.

Trundle has not rated this crackme yet.

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Discussion and comments

EvOlUtIoN
30. Oct 2007		Sorry...maybe i didn't understand what to do!
I drawn a correct polygon and it is crashing on dx click...is it normal? What to do now?
__imp__
Author
30. Oct 2007		Now:
2. Describe a class of correct polygons.
This means: describe, what polygons are accepted by the program (shape, number of vertices, etc. - whatever the sufficient conditions are).
"...it is crashing on dx click..." On my computer it works OK, and I didn't use any machine-specific stuff here. Anyway, you should use only l and r button single clicks.
Does anybody else have this problem with crashing?
TiGa
30. Oct 2007		No crash even on Vista x64.
zairon
Moderator
30. Oct 2007		No crash on xp sp2.
Evo, tell us more about the crash.
__imp__
Author
01. Nov 2007		Is anybody working on this? It needs only some basic knowledge in geometry, and some time to reverse (or to identify) the algorithm(s).
simpleuser
01. Nov 2007		I had a long & interested look already. I'll definitely try and solve it. It's too original to be ignored IMO.
Shism
01. Nov 2007		It accepts 31 lines max ?
Trundle
01. Nov 2007		@Shism: Jep. Check the WM_LBUTTONDOWN-Handler:
.text:004011B1 cmp dwNumPoints, 1Fh
.text:004011B8 jbe short loc_4011D0

loc_4011D0:
;Add point...
Trundle
01. Nov 2007		Ok, I solved it. This crackme is pretty nice, although it is definitely not 4. I consider it best to give this one a 2 or 3.

Anyway, I will submit a tutorial as soon as possible (tomorrow?).

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