我不认为任何代码都是牢不可破的，但奖励必须非常棒，才能让人们愿意尝试它。

话虽如此，你还是应该做以下事情:

Use the highest optimization level possible (reverse engineering is not only about getting the assembly sequence, it is also about understanding the code and porting it into a higher-level language such as C). Highly optimized code can be a b---h to follow. Make structures dense by not having larger data types than necessary. Rearrange structure members between official code releases. Rearranged bit fields in structures are also something you can use. You can check for the presence of certain values which shouldn't be changed (a copyright message is an example). If a byte vector contains "vwxyz" you can have another byte vector containing "abcde" and compare the differences. The function doing it should not be passed pointers to the vectors but use external pointers defined in other modules as (pseudo-C code) "char *p1=&string1[539];" and "char p2=&string2[-11731];". That way there won't be any pointers pointing exactly at the two strings. In the comparison code you then compare for "(p1-539+i)-*(p2+11731+i)==some value". The cracker will think it is safe to change string1 because no one appears to reference it. Bury the test in some unexpected place.

尝试自己破解汇编代码，看看哪些是容易的，哪些是困难的。您可以尝试一些想法，使代码更难进行反向工程，并使调试更加困难。

有人试过codemoth: http://www.sourceformat.com/code-obfuscator.htm吗? 或者Themida: http://www.oreans.com/themida_features.php ?

晚一点看起来更有希望。

很多时候，担心你的产品被逆向工程是多余的。是的，它可以被逆向工程;但它是否会在短时间内变得如此出名，以至于黑客们会发现它值得逆转。它吗?(对于大量的代码行来说，这项工作不是一个小时间活动)。

如果它真的能赚钱，那么你就应该筹集足够的资金，通过专利或版权等合法途径来保护它。

恕我直言，采取你将要采取的基本预防措施，然后释放它。如果它成为逆向工程的一个点，这意味着你已经做得非常好，你自己会找到更好的方法来克服它。祝你好运。

最好的反反汇编技巧，特别是在可变字长指令集上，是在汇编程序/机器代码中，而不是在c中

CLC
BCC over
.byte 0x09
over:

The disassembler has to resolve the problem that a branch destination is the second byte in a multi byte instruction. An instruction set simulator will have no problem though. Branching to computed addresses, which you can cause from C, also make the disassembly difficult to impossible. Instruction set simulator will have no problem with it. Using a simulator to sort out branch destinations for you can aid the disassembly process. Compiled code is relatively clean and easy for a disassembler. So I think some assembly is required.

I think it was near the beginning of Michael Abrash's Zen of Assembly Language where he showed a simple anti disassembler and anti-debugger trick. The 8088/6 had a prefetch queue what you did was have an instruction that modified the next instruction or a couple ahead. If single stepping then you executed the modified instruction, if your instruction set simulator did not simulate the hardware completely, you executed the modified instruction. On real hardware running normally the real instruction would already be in the queue and the modified memory location wouldnt cause any damage so long as you didnt execute that string of instructions again. You could probably still use a trick like this today as pipelined processors fetch the next instruction. Or if you know that the hardware has a separate instruction and data cache you can modify a number of bytes ahead if you align this code in the cache line properly, the modified byte will not be written through the instruction cache but the data cache, and an instruction set simulator that did not have proper cache simulators would fail to execute properly. I think software only solutions are not going to get you very far.

上面这些都是老的和众所周知的，我对当前的工具了解不够，不知道它们是否已经围绕这些事情工作了。自修改代码可能/将使调试器出错，但是人类可以/将缩小问题范围，然后看到自修改代码并解决它。

It used to be that the hackers would take about 18 months to work something out, dvds for example. Now they are averaging around 2 days to 2 weeks (if motivated) (blue ray, iphones, etc). That means to me if I spend more than a few days on security, I am likely wasting my time. The only real security you will get is through hardware (for example your instructions are encrypted and only the processor core well inside the chip decrypts just before execution, in a way that it cannot expose the decrypted instructions). That might buy you months instead of days.

另外，读读凯文·米特尼克的《欺骗的艺术》。这样的人可以拿起电话，让你或同事把秘密交给系统，以为那是公司其他部门的经理、其他同事或硬件工程师。你的安全系统也被破坏了。安全不仅仅是管理技术，还要管理人。

自2013年7月以来，人们对密码学上健壮的混淆(以不可区分混淆的形式)重新产生了兴趣，这似乎是由Amit Sahai的原始研究激发的。

Sahai, Garg, Gentry, Halevi, Raykova, Waters，候选人 以及所有电路的功能加密(2013年7月21日)。 Sahai, Waters，《如何使用无区别模糊处理》 可否认加密，以及更多。 Sahai, Barak, Garg, Kalai, Paneth，保护混淆不受代数攻击(2014年2月4日)。

您可以在这篇Quanta Magazine文章和IEEE Spectrum文章中找到一些提炼的信息。

目前，利用这项技术所需的资源数量使其不切实际，但AFAICT的共识是对未来相当乐观。

我这么说很随意，但对于那些习惯于本能地忽视混淆技术的人来说——这是不同的。如果它被证明是真正的工作和实际，这确实是重要的，而不仅仅是为了混淆视听。

我不认为任何代码都是牢不可破的，但奖励必须非常棒，才能让人们愿意尝试它。

话虽如此，你还是应该做以下事情:

Use the highest optimization level possible (reverse engineering is not only about getting the assembly sequence, it is also about understanding the code and porting it into a higher-level language such as C). Highly optimized code can be a b---h to follow. Make structures dense by not having larger data types than necessary. Rearrange structure members between official code releases. Rearranged bit fields in structures are also something you can use. You can check for the presence of certain values which shouldn't be changed (a copyright message is an example). If a byte vector contains "vwxyz" you can have another byte vector containing "abcde" and compare the differences. The function doing it should not be passed pointers to the vectors but use external pointers defined in other modules as (pseudo-C code) "char *p1=&string1[539];" and "char p2=&string2[-11731];". That way there won't be any pointers pointing exactly at the two strings. In the comparison code you then compare for "(p1-539+i)-*(p2+11731+i)==some value". The cracker will think it is safe to change string1 because no one appears to reference it. Bury the test in some unexpected place.

尝试自己破解汇编代码，看看哪些是容易的，哪些是困难的。您可以尝试一些想法，使代码更难进行反向工程，并使调试更加困难。