Script unpacks main but not individual archives (.DAT)

[Mas]

Hi, I'm using QuickBMS to try & extract .DAT archives from a game, it works on the main archives that hold shared 3D models, textures, sfx etc. but not on individual archives (for specific pieces of content).

When I try that it extracts some files, shows the filesize & names of others within QuickBMS but I get this message:
Error: the compressed zlib/deflate input is wrong or incomplete (-3)

Error: there is an error with the decompression
the returned output size is negative (-1)

Any idea's? Using HxD I can't see much difference between the two archives, I've been told they might be encrypted based on a user key, but I'm not so sure having tried file(s) from other distributions and encountering the same problem.

Here's the script:

Code: Select all

comtype deflate
get DUMMY short
get INFO_SIZE long
get DUMMY long
savepos INFO_OFF
math INFO_SIZE += 10
for INFO_OFF = INFO_OFF < INFO_SIZE
    get DUMMY short
    get SIZE long
    get ZSIZE long
    get OFFSET long
    get NAMESZ byte
    getdstring NAME NAMESZ
    get DUMMY byte  # filename null del?
    if SIZE == ZSIZE
        log NAME OFFSET SIZE
    else
        math ZSIZE -= 8
        math OFFSET += 8
        clog NAME OFFSET ZSIZE SIZE
    endif
    savepos INFO_OFF
next

Cheers for any help

[chrrox]

what game is it?
iracing_alpha ?

[Mas]

Yep.