#X32dbg download how to
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As you can see EAX is set 004479A4 by the value and that value is set by EDI 004479A1. From the comment we can see that we like to make the selected line jump, to do that EAX need to be вЂњ0вЂќ.

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However this time it is only a small part of the code This is not always the best way because it can take a lot of time.

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Note: I just loaded the program without the patch and looked where it jumped. This way I can see how the program loads the right way! These comments tell us how the program runs if it was not patched. Now you should see this:ДЄs you can see I have put in some comments. Place a breakpoint 004479A9 and restart the program (remember to import the patch) and let it run to our new breakpoint. Scroll past all the badboys until you get here: Now you get here:ДЄs you can see we landed just after the call to the messageBox and our badboy strings has been loaded 00447B70, so we are in the right routine but we need to scroll up. Select the line 00BCE5BC (the first line with our main module idman) and press Enter to follow. Then hit pause and look into the call stack and you should see this. Let the program run until you see the badboy. Restart the program and import the patch. This time we will use the call stack approach on the new badboy. The only reason for this second check is to make it harder to Patch, but that will not stop us. Shit, so this program runs another check also, not only the pointer. If you press вЂќOkвЂќ you will see this again So restart the target and import the patch and run the program. In x32dbg we have to export the patches and restart the target and then import the patches again. Note: We do that because x32dbg canвЂ™t remember the patch when we restart (In Olly they were remembered but disabled, and you could just enable them). So that pointer is вЂњ01вЂќ let us change the point to вЂњ00вЂќ and export the patch. If you select the top line and follow in dump. As you can see (at the top line) EAX is set by a pointer The JE jump 00449D84 decides to write вЂњTrialвЂќ 00449D90 or (if it jumps) вЂњFullвЂќ 00449DA6. Now this is more like it, here we can play =) Once again we break in this line of calls so remove the breakpoint at let the program run again. Remove the breakpoints at let the program run again. This cannot be the right place (there are no way to avoid the string). Well, as you can see we have just braked in a line of calls. Hmm this does not look good, but we just sets a breakpoint on every command, and let the program run. So just run the program and it should break here 005D891F вЂњEntry BreakpointвЂќ: I assume that you have disabled the вЂњBreak on System BreakpointвЂќ in the вЂњoptionsвЂќ and вЂњpreferenceвЂќ menu. Let us fire it up in x32dbg, and decide where to start our attack First attack with x32dbg Okay we see the text вЂњtrialвЂќ, вЂњUnregistered VersionвЂќ and an active вЂњRegistrationвЂќ button. Select вЂњAboutвЂќ in the вЂњHelpвЂќ menu and you see this: Now a days I always fire up Fiddler and disconnect from the internet when investigate a target but this time you do not have to. Internet Download Manager 6.26 Build 2 (x32)ДЈ0 days trial, Anti Cracking tricks Investigate the Target Remember, the best way to learn is to try to patch the program yourself first, if you do not succeed (or if you would like to see another approach) then read this tutorial. Do I have to say вЂњ This is only for learning so please: if you do like it, pay for it!вЂќ

#X32dbg download how to

I assume that you know x32dbg and how to change the flags, edit the asm code, search for constants and so on, just some basic knowledge. If you never worked with Code Caves before please read вЂњ Complete Guide to Code CavesвЂќ, because i will not go into how to find a place for a code cave or how it works. I recommend you to read the tutorial вЂњgoing deep working with pointersвЂќ before you jump into this one if you have not worked with pointers before.

#X32dbg download registration

We will also trick the program to write a registration key for us in the register. After that we will also have to bypass some anti cracking nags, to make the final patch we will make use of a small Code Cave. We need the string search the call stack and using what we now know about pointers. In this program, we will take a look into a program that is a little harder to crack.

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In this tutorial, we will be cracking a registration scheme from a вЂrealвЂ™ program with a Serial check. вЂњ#19 Patching Internet Download Manager v6.26(x32)вЂќ by XOR06 Intro