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Level : 3/10
OS : windows
Language : C++

OK, here we are again with a new series of challenges, which will start with number 10. This one isn’t that difficult but it requires that you consider new options. I left half of this challenge easy to help you along, so you can solve this one two ways, the tough way and the easier way. Here’s a tip: read all the code, there isn’t much.

Earlier today I was asked for a way how to write self modifying code. I remember I had once written a small crackme using this technique, and against all odds I was able to digg up the source code :)

So without further delay, a very small example of how you can write self modifying code :

Level : beginner

one thing: save the humanity!

tools: softice for all:))

Crackme download here

essay:
ok, it's time to save the planet!!!
read the story and take a look to the reference manual:))
here is our task:
1 enable the security mode
2 start the pacman bot
3 flush the battery of the bot
4 start the firewall

Level : beginner

DETTEN CRACKME #10 download here
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Tools: Softice, Procdump, LordPE, Hexeditor, Filescanner
Level 1-10: 4



The first part of this tutorial is about unpacking Aspack 1.08.04 by hand to get the program's listing. Then we reverse the algorithm and finally code a keygenerator.