Perhaps from Age of Empires 2? Sorry for my bad english. Thanks for you comment, I really appreciate it!!! But the goal of this blog is sharing knowledge about the hackers techniques and some malware researches in order to know how we need to protect our networks Please, don't use the info of this blog to do illegal things This post is just an example of a something like hacker competition Yes I know.
And i want to learn Reserve Enginnering. I had Age of Empires 2 bought legal. Its just for the learn effect. If you want, you can read the next post I hope it help you Can you kindly share the same?
Sorry but I lost the file But you could try whit this one!!! Twitter RSS Hacking while you're asleep. BehindTheFirewalls is a blog where you can find all the latest information about hacking techniques, new trends in IT security and the recent products offered by security manufacturers. Monday, September 30, How to get the serial number of a program with OllyDbg.
One of the tests consisted of getting the serial key of a simple program. You can download this awesome tool from here: OllyDbg v1. The first thing I usually do in these cases is to check if the executable is compressed or not. Some programs pack some of their codes in order to limit our attempt to statically analyze it.
To achieve this purpose we are going to use PeID. If the file were compressed with UPX for example, the program would advise us about it and we could uncompress it with this tool. If we click on the "EP Section" bottom, we will see some executable's details. We can see the R. Size Raw Size "" and the V. Size Virtual Size "" are similar in ". If some day you detect that the R. Size is "0" and the V. Size is "" for example, it would be an indicator that the executable is compressed because in the disk it does not have any size it is packed and in the memory it has a size it is unpacked itself.
Now we have the assurance that the file has not been compressed. This is one of the first steps in a static analysis. We are going to make a dynamic analysis with OllyDbg but I want to know if the developer has made an effort in order to try to hide some code. Notice if the executable is packed then we are not going to be able to read a lot of strings within the file.
It is possible I will talk about that in future posts. We have not figured out the serial number It seems logical Now, we are going to run OllyDbg. It does not need installation, just download it and uncompress it. Now we can see the binary code. Don't worry, remember this post is focused on beginners. Many programs use a timer for copy protection, and when the timer runs out, the user is no longer able to access the program. The goal is to find this counter code, and then bypass it.
If the program you are cracking uses a different form of protection, you will need to look for that instead. Once you've isolated the counter function, set your disassembler to break when it is encountered. This will allow you to look at the exact code that is occurring when the counter function is called. Now that you've found the code for the counter function, you can change the code so that the counter never reaches the point where it shuts you out of the program.
For example, you could make it so that the counter cannot count up to the break limit or you can bypass the counter by jumping over it. Recompile your newly-cracked software. After disassembling and editing, you'll need to compile the new version of the program so your changes propagate to the DLL files and other dependencies.
Theoretically, any activation can be bypassed. If you know assembly, I suggest you search for an input value being compared against a complex algorithm and bypass that block of code. Not Helpful 9 Helpful Tutorialspoint has assembly programming in it. It has a link to Coding Ground which has an assembly IDE on it so you can practice assembly without installing software on your computer. It's a great site, but you can utilize the internet too!
Look up tutorials to help you learn. There are also some great tips in How to Start Programming in Assembly. Not Helpful 11 Helpful YouTube tutorials can help develop these skills.
But be careful for viruses! Not Helpful 2 Helpful Hacking is an encompassing term which includes many activities, which can include cracking software, but is generally applied to attempting to gain unauthorized access to a computer system or a user's data. Not Helpful 3 Helpful Include your email address to get a message when this question is answered. Software piracy is illegal, so do this at your own risk. Helpful 1 Not Helpful 0.
Helpful 0 Not Helpful 0. You Might Also Like How to. How to. About This Article. Now, we will find out the two jumps that actually make the comparison and matching for our name and password with its logic. Figure 4 Non Operation jump. Now, test your EXE again to see if it is working or not and if it gives the direct Right password message or not.
There are many ways to do it; this is just the beginner level. However, you can find its right password by putting breakpoints and analyzing the ASCII dump that got created in the software. Thank you for reading, Have a great day. View All. Nilesh Jadav Updated date Sep 20, How to reverse engineer In here, we are taking a keygen. To understand in an efficient way, try this link: x86 Instruction Set Now, we will start to debug, so that we can find the exact referenced string to work out.
Figure 3 x86 assembly code Now, we will find out the two jumps that actually make the comparison and matching for our name and password with its logic. Figure 4 Non Operation jump Now, test your EXE again to see if it is working or not and if it gives the direct Right password message or not. Ollydbg Reverse Engineering. Next Recommended Reading.
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