Jul -- The Cutting Room Floor: Kingdom Hearts 1 file hiding

TheCubeMaster019

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Posted on 01-18-14 07:46:27 PM

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Hey, everyone!

I don't know how a PS2 works, but I do know know that you can view the files of a game on a computer. About half a year ago, I thought 'Cool! I can get the opening cutscene of Kingdom Hearts 1!' I then proceeded to put the disc in my computer and there were only 12 files, totaling to 4.14MB. I thought this was suspicious, and looked it up online. Turns out the filesystem is hidden.
I got PCSX2, and started playing around with the settings. In the console, I found that you can see the CD/DVD read commands. After logging the console, I found the cutscene starts at

CdRead: Reading Sector 729902(11 Blocks of Size 2048) at Speed=24x
and ends at

CdRead: Reading Sector 867184(3 Blocks of Size 2048) at Speed=24x
I got a DVD ripper and ripped the sectors 729902-867187, and now I have a 268MB file on my desktop taking up space.

Anyways, thanks to this thread, I got a glorious idea to follow the CD/DVD reads on startup, and follow what the PS2/game is accessing on the disc and try to see if I (or anyone who wants to help) can understand how to uncover the hidden filesystem.

Thank you for your time,
Cube.

root670
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Posted on 01-25-14 03:35:32 AM (last edited by root670 at 01-25-14 03:36:58 AM)

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Actually, there's been a lot of work done with KH1, mainly to aid in the creation of an English translation patch for Final Mix. Crazycatz00 did a ton of work on this and was able to fully reverse the hidden filesystem and compression/decompression algorithm. With his tools (found at http://crazycatz00.x10host.com/KH/), you can extract all files from a KH1US/KH1JP/KH1FM ISO to a folder and even patch files back in if needed.

Basically there is a file named "KINGDOM.IDX" on the root of the disc containing locations, lengths, hashed filenames, and other details about the hidden data on the disc.

Inside you can find models, animations, textures, intro/ending videos, voice clips, level textures, level geometry... basically everything. Unfortunately, these all use proprietary formats and the model files are the only ones that are understood well. There are also ARD files inside, which contain additional assets unique to parts levels. They contain more models, cutscene audio (I believe), subtitle text, and possibly scripts as well. They start with an offset table that points to each of these "sections" located in the ARD. Crazycatzz made a script to edit cutscene text, but there's lots of other stuff in there.

Anyway, hopefully that helps

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