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I release a bunch of tools for free, but recently I have began to sell an application, that has private research, and people have been able to get my source code, and one person publically released my entire source. I spent a lot of time on this program, just to have someone crack it, and release my entire source.
How can I go about protecting my program? I have tried HWID, but people are still able to crack it. I know I am limited by C#, but it the most convenient to use. I just need a way to protect my programs from people trying to do this.
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Encrypting some or all of a program's code is one obfuscation method. Other approaches include stripping out potentially revealing metadata, replacing class and variable names with meaningless labels and adding unused or meaningless code to an application script.
Objective-C code cannot be 100% obfuscated. There are some open source and some commercial tools that will obfuscate the class name, the custom methods and variables, but be aware that they can easily break and crash your app.
If you are a C++ developer, one method to help protect your C++ applications built with C++ software is to use a technique known as code obfuscation. In the event that malicious programmers attempt to reverse engineer your code, it can make your code very difficult for them to understand.
It's essential to hide business logic and code to make it harder for attackers to gain access and start debugging and tampering with your app. (They often repackage an application with malicious code.) 3. Code obfuscation can drastically reduce file size, and download times can be reduced drastically as well.
You could have a look at the many obfuscation tools that are out there, for example these:
http://confuser.codeplex.com (succeeded by https://yck1509.github.io/ConfuserEx/ and then again by https://github.com/XenocodeRCE/neo-ConfuserEx)
http://ntoolbox.com)
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