Lego Worlds (.DAT)

[Deadbot]

its possible extract archives from game.dat
since ttgame.bms script its not working anymone?

[Xiron]

So they changed it again? aluigi already fixed this at the end of August. Hmm...

[Deadbot]

yes, all text files with strange characters inside

[aluigi]

samples?

[Deadbot]

hes a sample

[aluigi]

From the link provided by Xiron:

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Basically these ZIPX chunks are used only for the TXT files and they
are probably obfuscated/encrypted.
Now the script no longer breaks at that point and extracts everything.
There is no solution yet for these TXT files.

[Ekey]

Encryption like xor + keygen. Key must be 256 bytes. For each file encryption key is different.

[Ekey]

Here my tool. Supported files *.TXT, *.XML, *.SF, *.CFG, *.CSV, *.LXFML

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[Usage]
        LWDecryptor <pScrFile> <pDstFile>

Example decrypt

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[Example]
        LWDecryptor GAMEVERSION.TXT GAMEVERSION_DEC.TXT

Also you can encrypt it back, example:

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        LWDecryptor GAMEVERSION_DEC.TXT GAMEVERSION.TXT

Edited: Download -> see below

[Ekey]

• Fixed problem with files size more than 30kb

[aluigi]

It's RC4 using the size of the file as key.
I'm modifying the script to do the decryption on the fly.

[aluigi]

I have updated ttgames.bms but I don't have a sample to test.

[Xiron]

Tried it, this is the output:

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- 0 files found in 0 seconds
  coverage file 0     0%   1077448    1590135720
  coverage file -1    4%   46447      1044648   
  coverage file -2    0%   0          32768     
Error: the compressing signature at offset 485756498 ()}7Z) is not known, contact me

[Deadbot]

did u need the game.dat aluigi?

@Xiron yes, same error for me

@Ekey works very well good job!

[aluigi]

Version 0.7.2, let me know if this one works (no errors and decrypted txt files).

[Deadbot]

empty text files with 0kb

[aluigi]

Could you please refresh and redownload the script?
There was a bug that I fixed 2 minutes after the initial upload, you should see "math TMP2 = SIZE" at line 312

[Deadbot]

its worked but some text file still encrypted/obfuscated
all another files has been decrypted...

[aluigi]

Ekey, do you think this problem is related to the 30k thing you said?
Any idea?

[Ekey]

You need decrypt file data by blocks with maximum size 0x8000

[aluigi]

so I guess that the encryption is performed after the decompression (CHUNK_SIZE).
I feel blind because I don't have a ZIPX sample to test, would be cool to have just the part from the first big (>0x8000) ZIPX to the next one.