#Crack program using ollydbg 2 0 how to#
#Crack program using ollydbg 2 0 registration#
#Crack program using ollydbg 2 0 verification#
#Crack program using ollydbg 2 0 software#

You will have to get to know what lots of the stuff means.

Don’t be discouraged, what you’ll be looking at is the program’s “Assembly”. When you disassemble a file for the first time, you’ll look at the contents of your screen and think, “Oh dear…”. Go get this program now, and resume the tutorial when it’s installed. Just copy and paste that URL into your browser and you should start downloading. It disassembles files, so you can see how the program is set out, how it works etc. This is one of the tools you will use regularly when cracking. The first thing I think you should do is get “W32Dasm”. (BTW, you’d better read this with word wrap on, or you’ll have hell trying to follow the text!!!). It is the intention of this tutorial to teach *complete* newbies what I have learned so far. It should be noted therefore, lots of what I say may be incomplete or inaccurate. I have been cracking for about a month or 2, with mixed success. “Slightly edited and commented by CrackZ”.You notice the title. I hope FlOrEsTaN will go forward to enhance his knowledge further”. You should easily find the target programs and tools. “FlOrEsTaN has sent me this tutorial he wrote a few months back and imho its one of the best “how to get started” tutorials I’ve read, I’ll certainly be adding this to my recommended newbies reading list. And for proof it was registered to me:Ī Cracking Tutorial for Newbies by FlOrEsTaN Newbies ONLY

Resume the program again, and you will have successfully activated the program.

Right-click the EAX and change it in hex value to 1, instead of 0.

This means that if it is replaced with anything other than null, it will run. Upon examination, we can see that the EAX is checking for a number that is not equal to a null value. EAX is the return of a value, which means that a check is being performed here.

Press F8 back in the CPU window to force the next step until you get to the TEST EAX.

If the debugger breaks (pauses the program’s execution) after entering your key, then you know you found DLL in step 5.

#Crack program using ollydbg 2 0 software#

Resume the program and enter any software key you feel like.

Test to see which one works to break out of the activation loop by right clicking the DLL call and setting a breakpoint for all instances of that call.

#Crack program using ollydbg 2 0 registration#

By stepping into the function with the debugger, we can examine the registration specifically. GETDLGITEMTEXT, will be for dialog boxes, which get called when you try to enter a software key.

Right click the CPU window, and click Search For > All intermodular calls.

Click the play button to run the program with the debugger attached.

Open up the program you wish to bypass with ollydbg.

This is to verify that we can come up with the keys. (ollydbg will be used in examples)įirst, run the program that you are attempting to reverse engineer and try to activate it with a random key to verify that you need a valid software key to proceed.

A debugger installed: IDA, ollydbg, etc.

Windows (for examples only, debuggers exist across platforms).

At that point, it’s a test of your morals if you want to use your knowledge for good or bad.

#Crack program using ollydbg 2 0 how to#

I will not be walking you through how to actually crack a legitimate program, because I can’t just crack a program for demonstration, but the techniques applied to my examples should give you the foundation needed to create your own. This works because assembly allows you to speak directly to the processor and force a skip over the registration process.In this Blog, let’s go over how cracking could work in practice by looking at an example program (a program that serves no purpose other than for me to hack).

#Crack program using ollydbg 2 0 verification#

Using this, you can completely bypass the registration process by making it skip the application’s key code verification process without using a valid key. This is mainly due to computer processes’ ability to be completely manipulated by an assembly debugger. Even with today’s most advanced methods of defeating piracy in place, it is still relatively easy to crack almost any program in the world. If you’ve ever wondered how software pirates can take software and crack it time and time again, even with security in place, this small series is for you.