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Home » Developing U++ » UppHub » Protect package - A starting copy protection system
| Re: Protect package - A starting copy protection system [message #49903 is a reply to message #49900] |
Sat, 02 June 2018 12:34   |
mdelfede
Messages: 1308
Registered: September 2007
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Ultimate Contributor |
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By now I'm testing first code on GCC, 64 bit, both in debug and release mode and it works perfectly.
The only caveat is that I can't set a different encrypting NONCE for each function as before, because there's no
simple way to embed data into the code as I coud do in assembly.
Not a big concern, just a bit less secure and probably crackable if you have a ton of encrypted functions, but
strong enough for most purposes.
I'm fixing the obfuscation part, then I'll go to windows.
It has NO inline assembly code inside, and there are just 2 conditions:
- encrypted code should contain NO data (which AFAIK is always true)
- the compiler should not re-arrange the code so that marked end comes before marked start. This should also be
always true but, if not, the encryptor will notice and signal it.
Code is encrypted only on its first byte of each instruction; remainig bytes and data fields are left unchanged.
This is more than enough to make the program crash if incorrectly decrypted, and avoids fiddling with fields changed
by loader (as far addresses, for example).
It should work on any X86 / X86-64 compiler with minor changes.
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Protect package - A starting copy protection system
By: mdelfede on Sun, 19 September 2010 21:07 |
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Re: Protect package - A starting copy protection system
By: dolik.rce on Mon, 20 September 2010 00:50 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Mon, 20 September 2010 10:02 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Mon, 20 September 2010 13:57 |
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Re: Protect package - A starting copy protection system
By: dolik.rce on Mon, 20 September 2010 18:29 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Mon, 20 September 2010 21:38 |
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Re: Protect package - A starting copy protection system
By: dolik.rce on Mon, 20 September 2010 23:21 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Mon, 20 September 2010 23:38 |
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Re: Protect package - A starting copy protection system
By: koldo on Mon, 20 September 2010 08:14 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Wed, 22 September 2010 00:52 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Thu, 23 September 2010 17:05 |
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Re: Protect package - A starting copy protection system
By: koldo on Thu, 23 September 2010 20:39 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Fri, 24 September 2010 10:13 |
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Re: Protect package - A starting copy protection system
By: Zbych on Sat, 25 September 2010 13:36 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Sat, 25 September 2010 15:37 |
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Re: Protect package - A starting copy protection system
By: Zbych on Sat, 25 September 2010 18:03 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Sat, 25 September 2010 18:59 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Wed, 29 September 2010 22:29 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Thu, 30 September 2010 21:30 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Thu, 30 September 2010 22:59 |
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Re: Protect package - A starting copy protection system
By: koldo on Fri, 01 October 2010 08:11 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Fri, 01 October 2010 13:53 |
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Re: Protect package - A starting copy protection system
By: 281264 on Fri, 01 October 2010 21:53 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Fri, 01 October 2010 22:36 |
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Re: Protect package - A starting copy protection system
By: 281264 on Sat, 02 October 2010 16:00 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Sat, 02 October 2010 18:08 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Sun, 03 October 2010 22:49 |
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Re: Protect package - A starting copy protection system
By: koldo on Fri, 08 October 2010 12:29 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Fri, 08 October 2010 14:10 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Sun, 10 October 2010 14:35 |
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Re: Protect package - A starting copy protection system
By: koldo on Wed, 13 October 2010 09:11 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Thu, 14 October 2010 01:42 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: mdelfede on Thu, 14 October 2010 10:45 |
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Re: Protect package - A starting copy protection system
By: koldo on Fri, 15 October 2010 10:54 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Fri, 15 October 2010 11:23 |
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Re: Protect package - A starting copy protection system
By: koldo on Fri, 15 October 2010 12:05 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Fri, 15 October 2010 12:23 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Sun, 30 January 2011 19:24 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Fri, 04 February 2011 01:39 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Fri, 04 February 2011 12:04 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 April 2011 10:02 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Wed, 06 April 2011 13:49 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 April 2011 15:23 |
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Re: Protect package - A starting copy protection system
By: mdelfede on Wed, 06 April 2011 23:18 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Thu, 07 April 2011 14:55 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 08 June 2011 10:08 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: koldo on Mon, 17 October 2011 21:24 |
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Re: Protect package - A starting copy protection system
By: ratah on Wed, 28 December 2011 10:54 |
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Re: Protect package - A starting copy protection system
By: koldo on Wed, 28 December 2011 13:04 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Fri, 01 June 2018 15:43 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: koldo on Mon, 04 June 2018 08:53 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Tue, 05 June 2018 11:37 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Tue, 05 June 2018 19:10 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Tue, 05 June 2018 20:22 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: mdelfede on Wed, 13 October 2010 01:06 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Tue, 05 June 2018 21:08 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 08:31 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 09:30 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 10:12 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 12:16 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 12:34 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 12:42 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 13:32 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 15:30 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Thu, 07 June 2018 12:26 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Thu, 07 June 2018 13:16 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Fri, 08 June 2018 12:42 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Fri, 08 June 2018 13:00 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Fri, 08 June 2018 14:22 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Fri, 08 June 2018 14:41 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Sat, 09 June 2018 09:49 |
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Re: Protect package - A starting copy protection system
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Re: Protect package - A starting copy protection system
By: Tom1 on Tue, 12 June 2018 20:23 |
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Re: Protect package - A starting copy protection system
By: Tom1 on Wed, 06 June 2018 12:32 |
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Re: Protect package - A starting copy protection system
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