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23 November 2011, 06:31
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#21 |
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Posts: n/a
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Go go go Denis with powercopy, i am your guest to test the result
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23 November 2011, 07:50
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#22 |
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CaptainM68K-SPS France
Join Date: Dec 2004
Location: Melun nearby Paris/France
Age: 46
Posts: 10,412
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Ok, let's explain it like this : while copying with powercopy the game on a real floppy works, the ADF format can't support the copy protection used. So sorry, but it won't work.
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23 November 2011, 12:00
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#23 | |
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move.l #$c0ff33,throat
Join Date: Dec 2005
Location: Berlin/Joymoney
Posts: 6,863
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Quote:
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23 November 2011, 12:39
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#24 |
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2 contact me: email only!
Join Date: May 2001
Location: Auckland / New Zealand
Posts: 3,182
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It's incredibly tedious as from memory every second track is re-encrypted with the same routine or a very similar one so you have to repeat that over and over!
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23 November 2011, 16:18
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#25 |
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move.l #$c0ff33,throat
Join Date: Dec 2005
Location: Berlin/Joymoney
Posts: 6,863
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That's completely correct. I didn't check the whole game yet, but so far it always is like this:
load encrypted track use previously decrypted code to decrypt current track I also saw some sneaky "store "hidden" data somewhere" routines so I suppose there will be some more fun later in the game.
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23 November 2011, 17:03
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#26 |
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uber cool demi god
Join Date: Jun 2006
Location: Kent/England
Posts: 2,073
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Nothing will beat StingRay! Looking forward to seeing this be beaten!
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23 November 2011, 18:21
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#27 |
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CaptainM68K-SPS France
Join Date: Dec 2004
Location: Melun nearby Paris/France
Age: 46
Posts: 10,412
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It's like Russian dolls lol hmmm very nice
!
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23 November 2011, 19:02
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#28 | |
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Missile Command Champion
Join Date: Aug 2005
Location: Germany
Age: 52
Posts: 12,436
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Quote:
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23 November 2011, 19:50
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#29 |
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move.l #$c0ff33,throat
Join Date: Dec 2005
Location: Berlin/Joymoney
Posts: 6,863
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Done.
I didn't quite delete my whole pm folder tho. :P
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23 November 2011, 23:26
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#30 | |
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Cheesy crust
Join Date: Nov 2008
Location: Hawk's Creek
Age: 48
Posts: 1,383
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Quote:
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24 November 2011, 08:41
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#31 |
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move.l #$c0ff33,throat
Join Date: Dec 2005
Location: Berlin/Joymoney
Posts: 6,863
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Indeed. And I have fun beating it. He used some nifty tricks, I quite like how he triggers an address error exception (moves a long to an odd address) and calculates new decryption values in the exception. The patching of the address error exception vector is nicely disguised. Kinda cute.
Also, the decryption gets more interesting too, had to code an "intelligent" decrypter for some parts. Attached screenshot shows that part of the source. I hope there'll be some more nice tricks used, so far it has been a lot of fun!
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28 November 2011, 17:46
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#32 | |
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Da Digger :)
Join Date: Nov 2008
Location: Monza, Italy
Posts: 2,822
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Quote:
 ...  <---- Me kneeling in front of you and your skills
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