*.bin file from 3DS game

[Pavel992]

game for Nintendo 3ds, I unpacked .3ds and then RomFS.bin and got several.moflex (video) *.fsb (container with sounds) << only the logo. and the file bank.bin, which looks strange (as if it was compressed or encrypted), help me with this file.

one guy from the forum helped me get the structure.
structure file??:

    3UINT ZERO, TABLESIZE_DATASTART?, ZERO
    filenum = (TABLESIZE/12)-1
    
    for filenum:
        3UINT OFFSET, FIZE, UNK
    

after unpacking I received a lot of files with Magic  EZ10, EZ00 and .etc
(EZ10, EZ00)these files are compressed or encrypted

orig file "bank.bin"

 

Samples.zip

Edited November 27, 2023 by Pavel992

[DKDave]

1 hour ago, Pavel992 said:

game for Nintendo 3ds, I unpacked .3ds and then RomFS.bin and got several.moflex (video) *.fsb (container with sounds) << only the logo. and the file bank.bin, which looks strange (as if it was compressed or encrypted), help me with this file.

one guy from the forum helped me get the structure.
structure file??:

    3UINT ZERO, TABLESIZE_DATASTART?, ZERO
    filenum = (TABLESIZE/12)-1
    
    for filenum:
        3UINT OFFSET, FIZE, UNK
    

after unpacking I received a lot of files with Magic  EZ10, EZ00 and .etc
(EZ10, EZ00)these files are compressed or encrypted

orig file "bank.bin"

 

Samples.zip 30.96 kB · 1 download

It's definitely compressed, but I can't find a compression type that works on it, so it might be a custom one.

It's always useful to say which game it's from in case somebody has already looked into it.

 

 

[Pavel992]

thanks for the answer. Maybe someone who understands compression will see a pattern, for example in a compressed file (4 bytes EZ10, uint dest_size?, 4 bytes unks, uint file_size). for example, there is a line in uncompressed: AUVCTR0005/05/14, and in compressed AUVCTR0.5/.14 (on the screenshot). it seems to be compressing repeating characters