Crack Program Using Ollydbg 2
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How to Crack a program using OllyDbg 2. In this tutorial i show you how to turn a program into a keygen for itself, as promised in the last video.:) if you have any. Sep 01, 2016 how to crack program with ollydbg part 2. How to crack program with ollydbg part 5. How to crack program using ollydbg.
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• Nov 15, 2009 in this tutorial i show you how to turn a program into a keygen for itself, as promised in the last video.:) if you have any questions shoot me a message:) • Mar 02, 2011 Come check out my blog at: to save the code, right click the code -) copy to executable -) all modifications. Then in the new window. • Nov 09, 2008 In this tutorial I will be showing you how to reverse engineer a program so that the serial key you enter is always right. This video was made for. • Aug 30, 2016 - 9 min - Uploaded by Anastasis Vasileiadis5:44 How To Crack A Software Using Ollydbg 2017 Latest - Duration: 7:37. GnH guy 47,539. • Jun 04, 2015 ollydbg, how to crack software using ollydbg, ollydbg crack software, ollydbg reverse engineering.
How to crack a program using OllyDbg - Duration. The objective of writing this paper is to explain how to crack an executable without peeping at its source code by using the OllyDbg tool. • Nov 16, 2009 - 9 min - Uploaded by Give Academythis is the first of my tutorials in using olly debugger and cracking a program. How to Crack a. • in this tutorial i show you how to turn a program into a keygen for itself, as promised in the last video.:) if you have any questions shoot me a message.
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• May 30, 2017 - 8 min - Uploaded by GnH guyHow To Crack A Software Using Ollydbg 2017 Latest. Tutorial you'll learn to crack software. • How to Crack a program using OllyDbg 2 - in this tutorial i show you how to turn a program into a keygen for itself, as promised in the last video.:) if you have. • Note: Below are the only tools which are installed by default in PentestBox.
But you can also install other tools through ToolsManager. To know the list of tools. • Jul 16, 2017 - 14 min - Uploaded by Samuel Andrade9:01. How To Hack/Register Program using OllyDBG - Duration: 2:36. Technical Knowledge 1.
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I think everyone has heard of this one, recently evolved into the 4.x series. Nmap (“Network Mapper”) is a free open source. • Sep 30, 2013. This post is focus on show you some techniques using OllyDbg.
It is only a game to. Please, don't contact me to crack programs, it is illegal. • Aug 30, 2012 Hey dudes lets start Cracking today and lets see in the real world how Crackers phishing Serial from software.
Our target is a protected program that ask. • Jan 6, 2012. Using this, you can completely bypass the registration process by making it skip the.
Open up the program you wish to bypass with ollydbg. • How to Crack a program using OllyDbg 2. In this tutorial i show you how to turn a program into a keygen for itself.
How to crack program using ollydbg part 11 (2017) • Jun 22, 2014 - 2 minHow to crack a progam easy and safe, take and download the crack from the link 1 or 2, ist. • Jun 21, 2014 How to crack a progam easy and safe, take and download the crack from the link 1 or 2, ist working 100% no virus Link 1:Link 2:http.
Hey dudes lets start Cracking today and lets see in the real world how Crackers phishing Serial from software. Our target is a protected program that ask for serial Download Target bellow The Tools that we need: OllyDbg, PEiD, W32dasm, HexWorkshop The Protection: Serial Protection Other Information: In This is a tutorial we will cover serial fishing with Olly. Let us first get set up and ready to crack.
Go to target folder in our case c: program files worldtv and make a quick backup that we can work on without fear of screwing up the file. Lets name it worldtv2.exe we will refer to it later It has become habit to first examine a target with PEiD to determine the packer or protector. Open up PEiD and drag worldtv2.exe into it. The result: “Microsoft Visual C++ 5.0”. Surprisingly, the target is not packed or protected.
That will make it all the easier to crack. Knowing that we will not need to unpack the executable lets us do a little examination of the protection scheme. Open up worldtv. It goes directly into the nag screen letting us know that it is not registered. That is important to note because it lets us know that it is checking for a registration key (maybe a keyfile or registry key) before the program even loads. Try putting in a random key. Ahh, we get a nice little messagebox telling us “Invalid Registration Code”.
Let’s write that little message down and save it. Press Okay for Exit.
Finding the Bytes: Lets first try the easy way. We are going to patch the jump that returns the invalid registration box. Run w32dasm and use it to open up WorldTV.exe. We are opening the original WorldTV.exe file so we can work on the copy that we made. After the file has been disassembled, we will look for the string from the messagebox. To do this click on the String References button at the top of w32dasm.
A new window opens up with a list of all strings found in the file. Scroll down until you find “Invalid Registration Code” and double click it. You should now be at the following lines: Looking at the code we see a test eax,eax followed by a jne 0041B54C We want to change the jne (jump if not equal) to jmp (jump) that way the program will register when you use any serial. To do this we will need to find where the jne instruction is located in WorldTv.exe.
That information is found at the bottom of the w32dasm window. You should see: Line:52558 Pg 657 and 658 of 1734 Code Data @:0041B521 @Offset 0001A915h in File WorldTV.exe We are interested in the Offset value of 0001A915h. Write this number down.
Ignore the “h” at the end it just means that the value is hexadecimal. Patching the Bytes: Open up WorldTV2.exe in HexWorkshop. Next press CTRL+G to bring up the Goto dialog box, Goto can also be found under Edit. We now want to type in the offset value that we wrote down, in this case 0001A915. Make sure the Hex option is checked and the Beginning of File option is checked. When you are ready press the Go button. This will take us to the location of our jne 0041B54C.
We know that 75 is the opcode for the instruction JNE and 74 is the opcode for instruction JE. In this case rather than jumping on bad serials we want the program to jump on ANY serial. We will replace 75 with EB which is the instruction for JMP. It Becomes: Save WorldTV2.exe, Now, find your newly patched WorldTV2.exe and run it. It asks for a serial! Give it any one you want, We will use 1234567.
Press Validate Registration and Success! Registration Code Accepted. Close WorldTV2.exe and open it back up again. It is still asking for a serial. Now, we could just put in a serial every time we use it but that is annoying. Instead, we are going to find a real serial.
Finding a Serial: To begin, review what we know about the program so far: 1. It checks for a serial when starting up 2. After registering with a bogus serial it is unregistered the next time you start it up This means that before the program even completely loads it is checking for the existence of a good serial. We need to find out where that serial is being stored.
There are usually two places a serial is stored! The registry and in a file. We are going to start with checking the registry. Start up WorldTV2.exe and put in 1234567 as the serial. Validate the serial and then close WorldTV. Go to your Start menu and find the Run command.
A box will open asking you to “Type the name of a program, folder, etc”. Type in “regedit”, without the quotes, and press enter. You will now be in the regedit window and see a two pane window with a list of folders in the left pane. Click on the plus sign in front of HKEY_CURRENT_USER. It will open, you now have another list of folders.
Click the plus sign in front of Software. Scroll down until you find WorldTV and click on the folder. In the right pane we have a key called RegCode with our bogus key: 1234567 stored in it. We now know that WorldTV checks the registry for a serial before loading. We are going to start by opening Ollydbg.
Using Ollydbg, open the original WorldTV.exe. Resized to 96% (was 630 x 31) – Click image to enlarge And ECX now holds the ASCII value “RegCode”. We know we are getting close because WorldTV just looked for the registration code. We are now going to step through the code and pay attention to the Registers. After a few steps we find that ESI is holding our bogus serial 1234567 and EDI is holding 000000-00000000. This is interesting, however I doubt that a bunch of zeros is the registration code.
Stepping through some more, we see that EDI is shortened to -000000. This still does not give us the serial. Continue to step through past where EDI is replaced by “C: Program Files WorldTV Scheduler.txt.tmp”. You will find soon after that point that you come to here: Notice that EAX, EBX, and EDX were all zeroed out.
Also we see an ASCII value moved into EDI. It is here we are going to start seeing our serial come together. After a little more stepping through we find that we are in a loop.
We can see that a serial is being made and can be seen at this address: MOV EDI,WorldTV.004C8950. Rather than stepping through the code line by line we are going to set a breakpoint on MOV EDI,WorldTV.004C8950 and watch our serial come together. Select the line and press F2 to set a breakpoint. Now press the Run button a few times and we can watch our serial build itself. Paying attention to EDI earlier we know that our serial is either 4 sets of 8 characters or 3 sets of eight characters. As you get near 3 full sets slow down or you will miss the serial.
When you only have 2 characters left to go stop pressing the Run button and just step through the code. When you step past the following line REP MOVS BYTE PTR ES:[EDI],BYTE PTR DS:[ESI] you will see the last two characters of your serial added on. Resized to 100% (was 606 x 123) – Click image to enlarge Go ahead and write this number down.
Press Run again to see if there is another set of characters to be added. Pressing Run again will start you through another loop where a separate serial is calculated (for what?
I am not sure because it would not register the program). Go ahead and close Ollydbg.
Open up the original WorldTV.exe and try registering with the serial we wrote down. Registration Code Accepted, we have successfully registered WorldTV with a real serial. No patching invloved!