╖ How To Calculate A Valid Serial for CrackMe v2.0 ╖

© 1998 by Cruehead / MiB
Software: CrackMe v2.0
Tools: Softice

Hello there again!

 Here it is, the "how-to-find-the-correct-password-for-crackme v2.0" tutorial. It's pretty easy, so you should be able to follow without any problems.

Manipulations on the entered password
First of all, we upcase the entered password. So if you wrote "Cruehead", it will be upcased and look like "CRUEHEAD".
Then we XOR every char in "CRUEHEAD" with the string "Messing_in_bytes", so it will look like this:

The ascii values for CRUEHEAD is "43,52,55,45,48,45,41,44"
The ascii values for Messing_in_bytes is "4D,65,73,73,69,6E,67,5F,69,6E,5F,62,79,74,65,73"

43 XOR 4D = 0E
52 XOR 65=37
55 XOR73=26
45 XOR73=36
48 XOR69=21
45 XOR6E=2B
41 XOR67=26
44 XOR5F=1B

Now, we got 8 values calculated from our entered password. These values are compared with some other bytes, and if they match, we have the correct password:

Values from entered password: 0E 37 26 36 21 2B 26 1B 00 00 00 00 00 00 00 00
Values from correct password: 1F 2C 37 36 3B 3D 28 19 3D 26 1A 31 2D 3B 37 3E

As you see, they dont match, so CRUEHEAD isnt the correct password (you really thought it would be THAT simple???).
Now you know how it's done, so go ahead and try to find the correct password yourself. If you give up, take a look at my solution.

This is my email: Cruehead_@hotmail.com
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Copyright © MiB 1998. All rights reversed.