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dijotp
 Post subject: NfS Shift .BFF files
PostPosted: Wed Sep 16, 2009 6:49 pm 
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Hi.
Anybody know how to extract these .BFF files?

Samples: http://66.7.218.134/~usaportu/pub/BFFs.rar
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demolos
 Post subject: Re: NfS Shift .BFF files
PostPosted: Fri Sep 18, 2009 4:30 pm 
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this game use zlib compression i looking into shift.exe with hexadecimal and i found zlib:

Error decompressing asset (zlib inflate): %s in pakfile %s

also i suppose the bff archives contain xml files
you can try to use Jaeder Naub to scan and rip the files inside bff archives
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aluigi
 Post subject: Re: NfS Shift .BFF files
PostPosted: Fri Sep 18, 2009 7:10 pm 
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no, it's not zlib.
the most probable hypothesis it's that it uses chunks of 0x800 bytes compressed with a lzx-like algorithm.
this is the max I can say without the game.
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Savage
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 9:54 am 
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Maybe helps..here more examples:
http://www.zshare.net/download/65787584f473ba87/
And the official demo:
http://needforspeed.com/web/nfs/downloads

Direct link: http://cdn.needforspeed.com/data/downlo ... PCDEMO.exe 1.1Gb's

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aluigi
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 12:16 pm 
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I have started to work on it this morning.
I have already figured almost all the fields included the rc4 encryption used in some bffs.
the compression algorithm should be called XMemDecompress and I guess it's referred to a cross-platform xbox function.
I will keep you update if there are news
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dijotp
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 12:49 pm 
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Thank you Bugtest, you rock. :keke:
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Savage
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 1:25 pm 
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I found some info about Xmemcompress http://forums.gtamodding.ru/index.php?showtopic=10

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aluigi
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 2:13 pm 
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good news, I did it :)
so stay tuned for a new version of QuickBMS and the needed script when all the tests will be finished completely
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Savage
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 3:31 pm 
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:eek:

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aluigi
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 9:54 pm 
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new version of quickbms: http://aluigi.org/papers.htm#quickbms
and the needed script for Need for Speed Shift: http://aluigi.org/papers/bms/nfsshift.bms
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dijotp, japamd, sommergemuese, YodaStar
japamd
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 10:50 pm 
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Bugtest wrote:
new version of quickbms: http://aluigi.org/papers.htm#quickbms
and the needed script for Need for Speed Shift: http://aluigi.org/papers/bms/nfsshift.bms


Wonderful job!

If the string are translated, how do I put the files together again?

Thanks!
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aluigi
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 11:09 pm 
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I make only the extractors.

if someone wants to write a quick rebuilder I suggest to use X12d equal to 0 (no encryption) and ever type 0 for each file so that it's not needed to use the compression.
the crc calculated on the files is just the simple classic one:
Code:
unsigned int crtable[...0x77073096 polynomial...];
unsigned int crc = 0xffffffff;
for(i = 0; i < len; i++) {
    crc = crctable[(data[i] ^ crc) & 0xff] ^ (crc >> 8);
}
return(crc);
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zeeh
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sat Sep 19, 2009 11:44 pm 
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Cool :) I hope soon we should have compiler working, good job!
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japamd
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sun Sep 20, 2009 4:55 am 
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zeeh wrote:
Cool :) I hope soon we should have compiler working, good job!


Are you making one? It would be great!
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sommergemuese
 Post subject: Re: NfS Shift .BFF files
PostPosted: Sun Sep 20, 2009 6:39 pm 
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Don't know if this is against the Rules here but ...

I bet please please create a BFF Rebuilder because Shift don't reads extracted files and I want to start modding :)
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