Winzip Tut #3
Cracking using only a hexeditor by K-Boy

Tools Needed: 	HexEditor







Note by ?ferret:

This method works, but to understand how it works you'll have to go through 
and try the keygen tutorial. In my C++ code for the generation routine,
 this hex string shows up in the formatting for the text output ;-) 



Hi ?ferret, hi to all
Let me contribute to the good essays you wrote, at least if you permit.

Many people have reversed WINZIP, but i have NEVER seen a single
essay with the trick i'm to point out now. It's the easiest 
winzip reversing you'll ever come accross. It works perfectly 
with all versions of Winzip. I've tested it. It's an ideal to 
play with hex strings.

OK, here we go

You only need a Hexeditor like Hiew or any other good hex stuff 
for the tip. No sice, no Turbo D, no Trw2000, no Wdasm, no Ida 
pro... etc

1.) Open winzip32.exe with Hiew
2.) Search for the string %04X%04X
It is located near string %04u%04u (haven't tried the second 
string to see what it does).

Our target is %04X%04X which has 8 strings.
What can we do with this weird thing ? you may be wondering. 

3.) Simply change %04X%04X to anything you wish,
for e.g %04X%04X = 00000000 or 12345678.

3.) Close Hiew, run winzip and input any name with serial which 
is = the change you made,
either 00000000 or 12345678 and now winzip is regged and fully 
running.
cheers

K-BOY