Cheat Engine

coder sal

You should make a crackme step-by-step tutorial. I mean I've cracked things before with OllyDbg, Notepad, VB Decompiler, Delphi Decompiler, and Flash (Sothink SWF Decompiler). But I really don't understand how you cracked other encrypted stuff with Ollydbg, you kind of patched and messed around with the code, I don't get that complex stuff. Can you possibly post a tutorial? I would so +rep you and even advertise your blog, I would do anything if you posted a "How to crack Crackme's tutorial". I'd bet it'd be pinned and you would get +repped by almost everyone on CEF. It'd be a benefit for everyone, and it would be really great.

Flyte · Posted: Mon Mar 10, 2008 7:40 pm Post subject:

The whole purpose of a crackme is to present a new and unique challenge to the reverse engineer. So a crackme tutorial is almost an oxymoron. However, most of the shit here is generic breakpoint and phish, so he could just teach you how to use Reflector. Rolling Eyes

coder sal · Posted: Mon Mar 10, 2008 7:46 pm Post subject:

I need help with crackme's like these:
http://forum.cheatengine.org/viewtopic.php?t=210097
Not with reflection though, ollydbg. I just simply need
a good step-by-step explanation on how to crack it.

Flyte · Posted: Mon Mar 10, 2008 7:49 pm Post subject:

atom0s · Posted: Mon Mar 10, 2008 10:09 pm Post subject:

@Flyte: The last link coder linked to was not a generic breakpoint and phish. I keygened it via reversing the code. Yes most of the things posted here are basic but thats because most of the people that post the crackmes are new to programming. I've done other crackmes posted on various other sites as well, but as you also said, the purpose of a crackme is to show new protections.

@Coder: I have written tons of tutorials for a lot of random things before, but cracking things hasn't been my specialty, ever. Theres nothing I can write about that isn't already on the internet that you can find and read as well. Like Flyte said, theres no way to write a tutorial that will make you able to crack anything. Different software use different protections, so any tutorial I write will just show you one single method.

The only method basically used here is breaking on certain calls and looking at the stacks. Along with that some fishing and tracing of functions and so on. Nothing major.

I suggest if you want to learn things for cracking, check out http://www.tuts4you.com they have tons of tutorials and a ton of starter things for anyone just learning.

PS: I don't, nor ever have, used Reflector.

coder sal · Posted: Tue Mar 11, 2008 5:02 am Post subject:

Pseudo Xero · Posted: Tue Mar 11, 2008 8:01 am Post subject:

Labyrnth · Moderator Reputation: 9 Joined: 28 Nov 2006 Posts: 6285

A method that takes a long time is doing a step method.
But like wicc said you have to go into calls and look.
No one method works on all applications.
Study your target before even opening it in Olly is essential. Also check and see if it is packed with anything.
Some people say looking for string references is noobie.
I disagree on this point, simply because if the application can be dealt with doing it that way then do it. Unless of course if your trying to learn a certain method pretending there are now strings and are targeting certain API's it uses.

There are hundreds of applications that have the most noobiest things that you do and can crack it. So dont ever overlook the simplest things.