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ExDuelist, posted Mon Feb 03, 2020 4:58 pm (53711)

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Hi there, since i'd like to translate this jrpg in italian, i'm looking for a method to do these things:

1. decompress this .obb file
2. extract all game texts and graphics from the resulting .dat files
3. reimport modified text and graphics into original .dat files
4. reimport modified .dat files into original .obb file

Does anybody know how to do this?

Ekey, posted Mon Feb 03, 2020 8:51 pm (53717)

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Where samples?

ExDuelist, posted Mon Feb 03, 2020 9:43 pm (53720)

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Ekey wrote:

Where samples?

you mean the .obb file? here:

https://anonfile.com/Hcnf59U9n4/main.11 ... ffl_gp_obb

Ekey, posted Mon Feb 03, 2020 11:16 pm (53721)

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Code:

# FINAL FANTASY DIMENSIONS II (Android / iOS version) OBB format
# script for QuickBMS http://quickbms.aluigi.org

set MEMORY_FILE10 string "
void iDecryptByOffset(unsigned char* lpBuffer, int dwOffset, int dwSize)
{
    int dwSeed = dwOffset   567890;
    for (int i = 0; i < dwSize; i  )
    {
        dwSeed = 1103515245 * dwSeed   12345;
        lpBuffer[i] ^= (dwSeed >> 24);
    }
}
"
savepos HEADER_OFFSET
math HEADER_SIZE = 20
log MEMORY_FILE HEADER_OFFSET HEADER_SIZE
calldll MEMORY_FILE10 "iDecryptByOffset" "tcc" RET MEMORY_FILE HEADER_OFFSET HEADER_SIZE

idstring MEMORY_FILE "ARC1"
get ARCHIVE_SIZE long MEMORY_FILE
get TABLE_OFFSET long MEMORY_FILE
get TABLE_ZSIZE long MEMORY_FILE
get CRC32_HASH long MEMORY_FILE

log MEMORY_FILE TABLE_OFFSET TABLE_ZSIZE
calldll MEMORY_FILE10 "iDecryptByOffset" "tcc" RET MEMORY_FILE TABLE_OFFSET TABLE_ZSIZE

get TABLE_SIZE long MEMORY_FILE
reverselong TABLE_SIZE
math TABLE_ZSIZE -= 4
clog MEMORY_FILE2 4 TABLE_ZSIZE TABLE_SIZE MEMORY_FILE

get FILES long MEMORY_FILE2
for i = 0 < FILES
  get NAME_OFF long MEMORY_FILE2
  get OFFSET long MEMORY_FILE2
  get ZSIZE long MEMORY_FILE2
  savepos TMP MEMORY_FILE2
  goto NAME_OFF MEMORY_FILE2
  get NAME string MEMORY_FILE2
  goto TMP MEMORY_FILE2
  callfunction EXTRACT_FILE 1
next i

startfunction EXTRACT_FILE
  log MEMORY_FILE3 OFFSET ZSIZE
  calldll MEMORY_FILE10 "iDecryptByOffset" "tcc" RET MEMORY_FILE3 OFFSET ZSIZE
  
  get SIZE long MEMORY_FILE3
  reverselong SIZE
  
  if ZSIZE == SIZE
     log NAME 0 SIZE MEMORY_FILE3
  else
     math ZSIZE -= 4
     clog NAME 4 ZSIZE SIZE MEMORY_FILE3
  endif
endfunction

This script for unpack obb from FINAL FANTASY DIMENSIONS II for Android / iOS. The formats are different and all that is known - data in your file is xored by 0x14

ExDuelist, posted Tue Feb 04, 2020 1:31 pm (53743)

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It doesn't work, FFD and FFD II got different structures.

Ekey, posted Tue Feb 04, 2020 6:04 pm (53750)

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ExDuelist wrote:

It doesn't work, FFD and FFD II got different structures.

Ekey wrote:

This script for unpack obb from FINAL FANTASY DIMENSIONS II for Android / iOS. The formats are different and all that is known - data in your file is xored by 0x14

ExDuelist, posted Tue Feb 04, 2020 7:23 pm (53753)

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Ekey wrote:

ExDuelist wrote:

It doesn't work, FFD and FFD II got different structures.

Ekey wrote:

This script for unpack obb from FINAL FANTASY DIMENSIONS II for Android / iOS. The formats are different and all that is known - data in your file is xored by 0x14

So what was the purpose in posting the FFD II script?

Ekey, posted Tue Feb 04, 2020 8:45 pm (53754)

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Since you did not provide the file you want to unpack, I downloaded FINAL FANTASY DIMENSIONS II instead of FINAL FANTASY DIMENSIONS I by mistake.

ExDuelist, posted Wed Feb 05, 2020 12:17 am (53759)

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Ekey wrote:

Since you did not provide the file you want to unpack, I downloaded FINAL FANTASY DIMENSIONS II instead of FINAL FANTASY DIMENSIONS I by mistake.

But i did. Anyway, if you manage to decompress it, let me know.

Ekey, posted Wed Feb 05, 2020 3:54 am (53763)

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I meant that you did not do this at the time of creating the topic. Anyway, If you asking about unpack / decrypt files and etc. then you must provide an example file at once.

ExDuelist, posted Wed Feb 05, 2020 2:14 pm (53779)

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Ekey wrote:

you must provide an example file at once.

??

Ekey, posted Wed Feb 05, 2020 3:32 pm (53783)

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What? You must provide an example file at during topic creation!

ExDuelist, posted Wed Feb 05, 2020 3:55 pm (53784)

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I already posted the file in exam, what else i have to post?

Ekey, posted Wed Feb 05, 2020 4:35 pm (53785)

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This must be done when creating a topic!

ExDuelist, posted Wed Feb 05, 2020 6:38 pm (53793)

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Ekey wrote:

This must be done when creating a topic!

Oh, ok.

ExDuelist, posted Tue Feb 11, 2020 12:15 pm (53924)

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up.

ExDuelist, posted Sun Feb 23, 2020 1:51 pm (54187)

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Up up up!

ExDuelist, posted Fri Mar 13, 2020 10:06 pm (54616)

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Up.

I won't give up.

ExDuelist, posted Fri Apr 03, 2020 9:41 pm (55504)

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Help!

aluigi, posted Tue Apr 07, 2020 10:43 am (55595)

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http://aluigi.org/bms/ffdl_obb.bms

ExDuelist, posted Tue Apr 07, 2020 2:10 pm (55602)

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ok then, with this script i got like 2500 files, i think the text is specifically stored into these



How to do it?

Luigi, grazie, mi hai riacceso la speranza. Se vuoi possiamo anche sentirci su discord.

aluigi, posted Wed Apr 08, 2020 9:41 am (55633)

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As far as I can see there are no references to the string since they are just a sequence of one-byte size field followed by the string plus some rare random strings placed in the middle.
I have updated the script for having all the extensions, so now only few files are .dat.
You can also use the script on the msg*.dat files (NOT message.dat) but you can't reimport the strings so no translation via quickbms.

ExDuelist, posted Wed Apr 08, 2020 1:54 pm (55636)

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aluigi wrote:

you can't reimport the strings so no translation via quickbms.

no hope then?

aluigi, posted Wed Apr 08, 2020 3:44 pm (55640)

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In theory reimport.bat can do the job but you need to maintain the same or shorter length for the strings... not practical.