Miles2345, posted Mon Apr 06, 2015 6:37 pm (4374)

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I just found this, but I do have a question, what are the eight bytes before and six bytes after the SHA1 hash? (LBP3)
http://puu.sh/h3PO6.png

Miles2345, posted Wed Apr 08, 2015 1:08 am (4385)

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Nevermind, got it sorted out.

Miles2345, posted Sat Apr 18, 2015 2:43 am (4604)

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Sorry to bother you with this game again but I had a question.

I need a way to turn whatever file I decompressed with offzip back into the format the game uses. Is this possible and how difficult would it be to do?

From there I can generate a SHA1 hash/fix blurayguids.map myself as well as manually inject it back into the farc file, that's not an issue. I only need to recompress it.

http://puu.sh/hhLVU.bin Here's a file in its original state and
http://puu.sh/hhLWs.dat here's the same file decompressed with offzip.

aluigi, posted Sat Apr 18, 2015 8:58 am (4612)

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It's a chunk-based format so, even if I write a script (easy), you will not be able to reimport it.

Miles2345, posted Sat Apr 18, 2015 3:07 pm (4621)

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Why's that exactly? I think I understand how reinserting it in a farc would work, I would just replace another file, I wouldn't need a script for that. I just need to compress it again and that's all.

aluigi, posted Sat Apr 18, 2015 6:10 pm (4626)

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You can use packzip to recompress but the problem is that it's splitted in chunks of 32768 bytes.
If you dump the chunks as single files you can reimport them without problems (quickbms with script or packzip) but it's not the correct way:

Code:

endian big
idstring "LVLb"
get DUMMY long
get DUMMY long
get DUMMY long
get CHUNKS byte

savepos TMP
xmath OFFSET "TMP   (CHUNKS * (2   2))"

for i = 0 < CHUNKS
    get ZSIZE short
    get SIZE short
    clog "" OFFSET ZSIZE SIZE
    math OFFSET   ZSIZE
next i