International Open Golf Championship - Page 2

StingRay · 20 March 2018, 08:48

Executable is broken, there is one packed section which is corrupted!

Meynaf: can you upload your version please?

meynaf · 20 March 2018, 08:55

It's now in the zone. This one shouldn't be damaged in any way. Dunno which version it is, though.

DamienD · 20 March 2018, 09:05

Quote:

Originally Posted by StingRay

Executable is broken, there is one packed section which is corrupted!

Thanks Sting; knew there was something wrong

Quote:

Originally Posted by meynaf

It's now in the zone. This one shouldn't be damaged in any way. Dunno which version it is, though.

Thank you kindly meynaf

...just tested this 10 times and it worked 10 times.

StingRay · 20 March 2018, 10:05

Whoever "cracked" it for Crystal had no clue what he was doing! Modifying data in a crunched section really is a "bright" idea...

Properly cracked (manual protection completely skipped) version attached. Didn't test it much but it seems to work. Thanks Meynaf for uploading your untouched version.

ross · 20 March 2018, 10:31

eeheh, I arrived late but got the same conclusion

But how this is possible? Not a proper ProPack decruncher? Laziness at most?

DamienD · 20 March 2018, 10:33

Quote:

Originally Posted by StingRay

Whoever "cracked" it for Crystal had no clue what he was doing! Modifying data in a crunched section really is a "bright" idea...

Properly cracked (manual protection completely skipped) version attached. Didn't test it much but it seems to work. Thanks Meynaf for uploading your untouched version.

Awesome, thank you kindly Sting

...and thanks to you again meynaf for providing a clean set

StingRay · 20 March 2018, 10:35

Quote:

Originally Posted by ross

eeheh, I arrived late but got the same conclusion

But how this is possible? Not a proper ProPack decruncher? Laziness at most?

Even without a proper ProPack decruncher it should not have been "cracked" like this. Then again, I've seen something like this before.

ross · 20 March 2018, 10:42

Quote:

Originally Posted by StingRay

Even without a proper ProPack decruncher it should not have been "cracked" like this. Then again, I've seen something like this before.

The funny thing is that it's more complicated to crack this way

(at least for me)

You would never know the possible side effects!

malko · 20 March 2018, 10:51

Quote:

Originally Posted by ross

eeheh, I arrived late [...]

Ha ha ha

.
Reminds me the time when groups were running to release first. And all these texts in the cracktro explaining why other groups were lame

...

meynaf · 20 March 2018, 11:30

Cracking by hacking crunched data is possible but should only be done when you can't do otherwise, and with extreme care (decrunch original, decrunch modified, and compare to verify this didn't have side effects).

StingRay · 20 March 2018, 11:33

Well, in this case the crunched data was completely trashed as Mr. "Cracker" added a nop opcode ($4e71) in the crunched data. That's not cracking, that's just plain stupid.

ross · 20 March 2018, 11:42

Quote:

Originally Posted by malko

Ha ha ha

.
Reminds me the time when groups were running to release first. And all these texts in the cracktro explaining why other groups were lame

...

I've a [pre] at 9:49(CET), I can bring proof

Quote:

Originally Posted by meynaf

Cracking by hacking crunched data is possible but should only be done when you can't do otherwise, and with extreme care (decrunch original, decrunch modified, and compare to verify this didn't have side effects).

So this way is more complicated than a proper crack

Quote:

Originally Posted by StingRay

Well, in this case the crunched data was completely trashed as Mr. "Cracker" added a nop opcode ($4e71) in the crunched data. That's not cracking, that's just plain stupid.

Maybe cracker was in a hurry and drunk

StingRay · 20 March 2018, 11:46

Quote:

Originally Posted by meynaf

Cracking by hacking crunched data is possible but should only be done when you can't do otherwise, and with extreme care (decrunch original, decrunch modified, and compare to verify this didn't have side effects).

Well, I can't see any reason why a "use LoadSeg and patch on the fly" is not possible. IMHO there is no need at all to tamper with the crunched data.

Quote:

Originally Posted by meynaf

Maybe cracker was in a hurry and drunk

Who knows. I know what he was not though: A good cracker.

meynaf · 20 March 2018, 11:52

Quote:

Originally Posted by StingRay

Well, I can't see any reason why a "use LoadSeg and patch on the fly" is not possible. IMHO there is no need at all to tamper with the crunched data.

It may be useful when the game uses some kind of script system. I've seen cracks patching the code and destroying other parts of the game.

StingRay · 20 March 2018, 11:56

Well, interpreter based protections should always be cracked by patching the byte code of the interpreter data instead of using ugly crack patches. It was one of the reasons for HQC to return and release a proper crack of Monkey Island 2 (I think) as they were annoyed that no one did it in a "clean" way.

meynaf · 20 March 2018, 12:02

And such cracks become a little bit more complicated when said byte code is in compressed data...

StingRay · 20 March 2018, 12:21

Indeed. And more fun as well.

DamienD · 20 March 2018, 13:04

Quote:

Originally Posted by StingRay

Whoever "cracked" it for Crystal had no clue what he was doing! Modifying data in a crunched section really is a "bright" idea...

Properly cracked (manual protection completely skipped) version attached. Didn't test it much but it seems to work. Thanks Meynaf for uploading your untouched version.

Hmmm, just gave this a quick test while at work...

For me, it gets to the title screen everytime but never to the manual protection screen shown here (taken from maynef's original):

Anyone else had any luck?

StingRay · 20 March 2018, 13:06

Check what I wrote:

Quote:

(manual protection completely skipped) version attached.

DamienD · 20 March 2018, 13:09

Ok, but the game never goes past this screen:

Pressed mouse, joystick buttons, various keys... What obvious am I missing?

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20 March 2018, 08:48	#21
StingRay move.l #$c0ff33,throat Join Date: Dec 2005 Location: Berlin/Joymoney Posts: 6,863	Executable is broken, there is one packed section which is corrupted! Meynaf: can you upload your version please?

20 March 2018, 08:55	#22
meynaf son of 68k Join Date: Nov 2007 Location: Lyon / France Age: 51 Posts: 5,323	It's now in the zone. This one shouldn't be damaged in any way. Dunno which version it is, though.

20 March 2018, 10:31	#25
ross Defendit numerus Join Date: Mar 2017 Location: Crossing the Rubicon Age: 53 Posts: 4,476	eeheh, I arrived late but got the same conclusion But how this is possible? Not a proper ProPack decruncher? Laziness at most?

20 March 2018, 11:30	#30
meynaf son of 68k Join Date: Nov 2007 Location: Lyon / France Age: 51 Posts: 5,323	Cracking by hacking crunched data is possible but should only be done when you can't do otherwise, and with extreme care (decrunch original, decrunch modified, and compare to verify this didn't have side effects).

20 March 2018, 11:33	#31
StingRay move.l #$c0ff33,throat Join Date: Dec 2005 Location: Berlin/Joymoney Posts: 6,863	Well, in this case the crunched data was completely trashed as Mr. "Cracker" added a nop opcode ($4e71) in the crunched data. That's not cracking, that's just plain stupid.

20 March 2018, 11:56	#35
StingRay move.l #$c0ff33,throat Join Date: Dec 2005 Location: Berlin/Joymoney Posts: 6,863	Well, interpreter based protections should always be cracked by patching the byte code of the interpreter data instead of using ugly crack patches. It was one of the reasons for HQC to return and release a proper crack of Monkey Island 2 (I think) as they were annoyed that no one did it in a "clean" way.

20 March 2018, 12:02	#36
meynaf son of 68k Join Date: Nov 2007 Location: Lyon / France Age: 51 Posts: 5,323	And such cracks become a little bit more complicated when said byte code is in compressed data...

20 March 2018, 12:21	#37
StingRay move.l #$c0ff33,throat Join Date: Dec 2005 Location: Berlin/Joymoney Posts: 6,863	Indeed. And more fun as well.

20 March 2018, 13:09	#40
DamienD Banned Join Date: Aug 2005 Location: London / Sydney Age: 47 Posts: 20,420	Ok, but the game never goes past this screen: Pressed mouse, joystick buttons, various keys... What obvious am I missing?

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