26 (edited by LedZeppelin68 2019-07-17 19:41:35)

I think we must save, what can be saved, and store al possible info

I remade xbox_rnd tool, now it doesn't remove the junk from ISO, but only brutes the seed of first type
saves it to log, and it works much faster

P.S. drag all ISOS on the EXE and wait

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xbox_rnd_x64.zip 3.52 kb, 6 downloads since 2019-07-17 

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Did you make any new research on this, Led?

diego-rbb-93 wrote:

Did you make any new research on this, Led?

LedZeppelin68 wrote:

first type seed is only 32bit, 256^4 combinations

second type seed is 128bit, 256^16 combinations, impossible to bruteforce, forever

So, the tool is useless for most discs.

diego-rbb-93 wrote:

Did you make any new research on this, Led?


I would continue to research type 2 algo, maybe some statistical analysis will help

for now, all i can offer to save space
1) for a little amount of isos with type 1 seed (maybe few hundreds) - xbox shrinker
2) for big games with regional clones, which data occupies most of the iso - use merger

Sorry, this is all i can offer

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xbox_shrinker.zip 306.62 kb, 8 downloads since 2019-08-12 

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Any chance you would consider open sourcing this?

Thanks for your work.

user7 wrote:

Any chance you would consider open sourcing this?

sure, here it is: https://github.com/LedZeppelin68/dvd-shrinker

all credits for the algorithms goes to JayFoxRox