Hi,

I've made a little tool which decrypts the file you sent. Please tell me if it works with other files, too.

You can download it from http://gamefileformats.the-underdogs.in ... tperry.zip

IIRC the Tex Murphy games use the same file format as the other Access games. If that's the case, I already have an extractor. I'll try to dig up my game CDs and see what I can do.

I had a look at it, too. It looks like the offsets are encoded in some way. Usually there's 2 bits of some kind of command followed by 4 bits. If you combine the 2x4 bits you sometimes end up with the correct offset. It's probably some way to increase the dictionary size to more than 4kb while still...

Yes, that would be good.
I checked, and the bytes used to XOR against are different for each file. I guess it's calculated via one or more values from the file header.

There are still unknown values which are probably important, so at the moment it's not possible to create/modify the archives.
Also, I won't do any further research on the files and won't make packer.

All data from Outcast is compressed using the PKWare Data Compression Library. You can find decompression source code on the web.
The first two bytes (0x00 0x06) are the PKDCL header. There are other variations, too, they should be in the decompression code. Could be useful for your detection tool.

Ok, I recompiled the Exe using the static zlib library. It should have used the static one before, somehow it didn't...

You're right, the PAKs are normal Zip files, they just played around with the header. I've modified the minizip/miniunzip from zlib to work with the modified Zips: http://www.xentax.com/uploads/author/johndoe/aionzip.zip For the interested, the Zip magic bytes (i.e. PK\03\04) are simply XORed with 0...

Can you send me the idx files to john_doe@techie.com?
Either they really changed something or it's just a bug

By looking inside the Exe
If it doesn't work I'll think of something.

Yes, I tried and succeeded :) The unpacker still hot 'n steaming fresh out of the compiler. It's a simple command-line based unpacker. You can download the Exe from http://www.xentax.com/uploads/author/johndoe/unhell.zip and the source code for the interested from http://www.xentax.com/uploads/autho...

It's not Bink. The header is completely different, and since Bink videos are in a proprietary cross-platform format, it's very, very unlikely they would contain PSX texture files. From a quick browse through one file, it seems it's texture and model data of some sorts. I can't find any kind of archi...

Rheini wrote:isn't that easier?

That wouldn't be quite legal.

Hi there, since there's no update from Demander I made a Sdf unpacker myself. You can download it from http://www.xentax.com/uploads/author/johndoe/unsdf.zip It's a pretty basic command-line tool. Just give it the name of the sdf file as parameter, it will create a subdirectory in the current direct...

Here's some info & source on BPE: http://www.csse.monash.edu.au/cluster/R ... oblem.html