Cracking → Cracking Tutorials → Beginners cracking tutorial (DirtBike 3D) w/ new link

08 Aug 2009, 08:24

This is a reup of a previous tutorial with a new link to the files using a different file host.

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c0rk007hck 13 Aug 2009, 09:04 #

Thanks, I cracked it so:
Change entry 00415EC7 'JNZ SHORT 00415EF4' to 'JMP SHORT 00415EF4'

P@ckR@t 13 Aug 2009, 09:46 #

You're welcome. Yeah...there's several ways to crack this one. It's a rather weak program. I figured it was perfect for beginners. Kinda fun to play, too

BigPimpin 13 Aug 2009, 23:54 #

Hey im trying to do this on another program and the hiew32 keeps saying read only mode when I try to make a change. Sup wit dat?

Bio666 16 Aug 2009, 08:26 #

i need help i cant open the file, when i try to open it my comp tries to go to an internet page but its some other crap any suggestions?

P@ckR@t 17 Aug 2009, 00:16 #

@BigPimpin
If you have the execute file opened in another program, hiew will only let you have access in read only. You just have to make sure it's closed then hiew will allow you to edit it.

P@ckR@t 17 Aug 2009, 00:21 #

@Bio666
What file are you trying to open when it does this? I'm puzzled as to why it would try to navigate you to an internet page.

XLNC 29 Aug 2009, 15:26 #

One quick question

How do you know which code to change because theres so many
you have:
00415EEF |. /E9 01010000 JMP DirtBike.00415FF5
00415EC7 |. /75 2B JNZ SHORT DirtBike.00415EF4 (the one that c0rk007hck pointed out)
00415F20 |. /E9 85000000 |JMP DirtBike.00415FAA

How do I know that changing 2nd one (JNZ SHORT DirtBike.00415EF4) will yield the correct result and others wont?

Please do help.

Many thanks.

P@ckR@t 30 Aug 2009, 03:32 #

JMP and JNZ are unconditional and conditional jumps respectively. Meaning...an uncoditional jump will go to the desired memory location regardless of any set values whereas a conditional jump must match (or not match) a set value in order to make the jump. I'll be uploading a few manuals on Assembly Language soon. I think most of the one's I have are available free on the internet but I'll post them for convenience. Knowing which values to change is where a bit of Assembly Language knowledge comes in. If you know what a routine/subroutine does, you'll know whether or not you want to make a jump or under what conditions to make a jump. I don't mean to make it sound like you have to be able to program in assembly, but the more you know, the better off you are.

camachousa 17 Oct 2009, 10:55 #

thank you

nastyme008 19 Oct 2009, 12:52 #

please could you be so kind as to teach me how to crack.... i'm really interested in this course its fun.....

sharanurs 20 Oct 2009, 20:11 #

P@ckR@t can you please put those assembly tutorials soon and give some examples of cracking some software for educational purpose I want to know how things work... how cracking is done... I am lot interested in computer science. Can you please explain which conditional jump should I modify as there are many how to find the right one and how to use the debuggers effectively am very new to cracking I have downloaded hiew and windasm from internet but I need to learn a lot. When I opened a .exe using windasm it shows so many pages of codes I didnt understand where to start from..... can you please tell how to execute that one step by step and halt it at a specified instruction and check

thanks in advance madan2madan123@yahoo.com

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