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dareka, posted Tue Dec 11, 2018 5:47 am (41249)

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I'd like to have a bms script for Carnival by S.M.L.
There actually is a dumper already, but I can't get the repacker to work, so if I had a bms script I wouldn't have any problem.

Here you have some example archives: https://ufile.io/ihh47

aluigi, posted Tue Dec 11, 2018 10:51 am (41260)

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The script is valid for reimporting:
http://aluigi.org/bms/sml_carnival.bms

More info about reimporting are available in section 3 of http://aluigi.org/papers/quickbms.txt

dareka, posted Tue Dec 11, 2018 11:11 am (41262)

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Uhm, there must be something wrong in the code.
On the left the file extracted with quickbms and on the right the file extracted with the tool I add
[spoiler][/spoiler]

And the script can't extract images.

aluigi, posted Tue Dec 11, 2018 4:32 pm (41270)

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I updated the script 5 minutes after my post so I guess you downloaded the first version
Redownload it to get the correct script.

dareka, posted Tue Dec 11, 2018 10:36 pm (41288)

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aluigi wrote:

I updated the script 5 minutes after my post so I guess you downloaded the first version
Redownload it to get the correct script.

The new script works great for the images, but the script files are still extracted with gibberish in them.
I'm not a programmer, so I don't know what's the issue, but in the file that seems to be the source code of the other tool I have there's this interesting part about the header

Code:

typedef struct _HEADER
{
   char signature[0x2B];
   unsigned char xormask;
   unsigned int filecount;
   unsigned int indexoffset;
} HEADER;

I don't know what this "0x2B" is, but it's not present in your script.

I put the file on Pastebin, if you want to see it.

aluigi, posted Wed Dec 12, 2018 8:09 am (41297)

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Here all the files from script.pd are perfect and perfectly readable.

Example:

Code:

IF $KAISOU == 0 JMP NOT_KAISOU_CVA501
JMP SN_CVA501_00
:NOT_KAISOU_CVA501


TS 0
TWS 0
TS 3





?????????????????????????????????????
...

dareka, posted Thu Dec 13, 2018 2:44 pm (41359)

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I swear, yesterday it didn't work. I had my language settings for non-unicode set to Japanese, I switched them back to the original settings and the tool worked. Now I set it to Japanese again and it still works. I have no idea why

Anyway, if I use the normal reimport method it works, but if I use the reimport2 (even with unedited files) the game crashes. What's really strange is the fact that if I use reimport2 with unedited files I get a new archive with the same byte count as the original (~1MB), but if later I use this new archive as a base for reimport1 I get a 690MB archive starting from a 1MB archive. lol
I got that there should be some problem with the TOC or whatever. What baffles me is the fact that starting from a 1MB archive I get a 690MB archive using the 1:1 reimport method.

aluigi, posted Thu Dec 13, 2018 3:11 pm (41362)

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What you have found is a bug in reimport2 or, to be more exact, an incompatibility in the "filexor" instruction in reimport2 mode (not exactly a bug).

Basically only the files are obfuscated while the information are in clear-text.
In script.pd the files are obfuscated so we:
- read the information
- activate the filexor obfuscation
- dump the file
- change the original offset/size/zsize fields
- disable the filexor obfuscation

The problem is that when we edit the fields we have the obfuscation activated and our new fields will be corrupted.

I have rewritten the script for supporting the reimport mode, version 0.1.2.
I opted for checking if "PackPlus" is specified because I'm quite sure that the encryption is not based on the extension of the files.

Regarding filexor and reimport2... I will think about it, if it's something that must be fixed or doesn't matter

dareka, posted Thu Dec 13, 2018 5:13 pm (41367)

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Wow, now it works. Thank you.
It works for edited images too.
However the extracted sound files won't open. But maybe they have some special codec or something. But I don't really care, so nevermind.