根据微软博客中的以下问题:

https://blogs.msdn.microsoft.com/amb/2011/05/27/how-to-prevent-ildasm-from-disassembling-my-net-code/

如何防止ILDASM分解程序集?

. net有一个名为SuppressIldasmAttribute的属性，它可以防止分解代码。例如，考虑以下代码:

using System;
using System.Text;
using System.Runtime.CompilerServices;
[assembly: SuppressIldasmAttribute()]

namespace HelloWorld
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello world...");
        }
    }
}

如你所见，只有两个不同之处:

我们添加了System.Runtime.CompilerServices命名空间减速。 我们添加了[assembly: SuppressIldasmAttribute()]属性。

在Visual Studio中构建应用程序后，当我们尝试在ILDASM中打开生成的EXE文件时，现在我们得到以下消息:

最好的答案是第一个来自小开发人员自己的经验，上面讨论的所有反反转技术对于任何严肃的反向工程师来说都是101个教科书案例。

一些商业DRM解决方案相当不错，但它们总是在数小时(或数天)内使用自定义DRM解决方案破解每一款AAA级游戏。只有一个全新的DRM解决方案的引入——有时——延迟是不可避免的，可能需要几个星期。

充分利用DRM需要花费大量的时间和金钱，而且很容易损害性能、可靠性、兼容性/可移植性和客户关系。要么坚持一些像样的商业DRM，不要试图太聪明，承担你的(更少的)损失，要么完全忘记它……

一个DRM解决方案的例子，它挖了自己的(商业)坟墓:http://en.wikipedia.org/wiki/StarForce

只是补充一个警告:如果你打算使用混淆，检查一切仍然工作!混淆可能会改变类名和方法名。因此，如果你使用反射来调用某些方法和/或类(就像在插件架构中)，你的应用程序在混淆后可能会失败。另外，堆栈跟踪对于跟踪错误可能是无用的。

Here's one idea: you could have a server hosted by your company that all instances of your software need to connect to. Simply having them connect and verify a registration key is not sufficient -- they'll just remove the check. In addition to the key check, you need to also have the server perform some vital task that the client can't perform itself, so it's impossible to remove. This of course would probably mean a lot of heavy processing on the part of your server, but it would make your software difficult to steal, and assuming you have a good key scheme (check ownership, etc), the keys will also be difficult to steal. This is probably more invasive than you want, since it will require your users to be connected to the internet to use your software.

net反应堆

更新

Jared指出de4dot声称能够反编译它。

.NET Reactor provides complete protection for your sensitive intellectual property by converting your .NET assemblies into unmanaged processes which cannot be understood as CIL, and which no existing tool can decompile. Hackers have no access to any intelligible form of your source. Powerful and flexible, the .NET Reactor licensing features allow you to enforce your license conditions and protect your revenue stream by using hardware and software locks. The license manager can build trial or permanent licenses, in a matter of seconds. A fully documented software development kit (SDK), complete with examples, allows you to call the licensing system directly from your code, allowing you to create custom extensions to the licensing system.

使用Skater . net混淆器。该. net保护工具针对de4dot, de4dot是一个去混淆器，它将原始受保护的程序集成员名称重命名为人类可读的字符串。溜冰者与之对抗!

最近，MindSystemm集团发布了一个名为Skater的特殊工具。NetDeobfuscator [url: https://github.com/MindSystemm/Skater.NetDeobfuscator]，它利用了Skater. net混淆器的漏洞。 混淆器的开发者Rustemsoft LLC收到了一个迫切需要保护关键的Skater . net混淆器算法和软件基础设施的信号，以便为Skater用户提供更强的源代码保护。这个问题已经解决了。