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- Cracking Tutorial #3 By SiONiDE
-
- Hi fellow Crackers. I write these tutorials in short amounts of time. Therefore I apologise
- for any grammatical errors in this essay. Enjoy the Tut!
-
- Removing NAG Screens Using only A Hex Editor:
-
- Difficulty Level: Easy [X] Medium [ ] Hard [ ] Expert [ ]
-
- Toolz Required:
- hIEW...............A good Cracking Web Site.
- Brain..............Ummm....Head maybe??
- Computer...........You're on one now!
-
- Step 1:
-
- Lets find a target, something easy that has an annoying nag when you run the program.
- First lets have a look at it, run the program and note down a few words from the NAG
- screen. E.G "You can purchase this software....blah blah blah". Now open target.exe
- with the Hex Editor (hIEW) which is the most common for crackers. Load it up and
- press "ENTER" once to put it in HEX mode. Now you press "F7" to do a search, type in
- the ASCII value for one of the words, E.G purchase, but you "MUST" put a double zero
- between each number.
-
- E.G.
-
- 230075007200630068006100730065
- | | | | | | | |
- P u r c h a s e
-
-
- You should then come to something that looks like the below:
-
- 0000 0E00 0000 0000 0000 0000 2300 7500 ............P.u.--------> The code you searched for.
- 7200 6300 6800 6100 7300 6500 0000 0000 r.c.h.a.s.e.....
- 0000 0000 0100 0000 0100 0250 0700 0700 ................
- 0000 0000 0000 0000 0000 0000 0000 0000 ................
- 0000 0000 0000 0000 0000 0000 0000 0000 ................--------> This part will be replaced
- 0000 0000 0000 0000 0000 0000 0000 0000 ................--------> with the rest of the NAG
- 0000 0000 0000 0000 0000 0000 0000 0000 ................ Message. I've just used full
- 0000 0000 0000 0000 0000 0000 0000 0000 ................ stops. I'm Lazy. :)
-
- Step 2:
-
- Once you have found the message. You will need to search for a HEX value of "FFFF82", so
- press "F7" and click in the HEX box, type in the value. As said in ACiD_BuRN's NAG tutorial,
- we have no idea why to search for this value, but should always work!!! Once you have found
- it, you will need to replace the 82 with 7E, so FFFF82 becomes FFFF7E. Press F3 to edit,
- make sure that read-only is switched off in the properties and enter the new HEX value.
- Press F9 to update/save the file. Exit and run the program, walla No More NAG Screen!!!
-
- Step 3:
-
- If you want to make a patch of this routine, d/l a byte matcher and compare the NAG-Free file
- with the oiginal. Then make sure you pack your patch before you upload it, this will make it
- harder for "fake" crackers to still your work then HEX out your name and fill in theirs!
- One more thing..... Before you distibute a patch on the internet, make sure it works, if there
- is one thing I hated when I couldn't crack was downloading a crack that doesn't work. Now I save
- myself the trouble, and you should too.
-
-