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xperiagenerator, posted Tue May 02, 2017 10:40 am (22810)

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Hi
I want extract the file of this grp.bin file
Can someone please take a look at it?
thanks in advance

http://www.mediafire.com/file/xekj61pca82bbqj/grp.rar

aluigi, posted Tue May 02, 2017 12:36 pm (22811)

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Apparently there are various games that use this GRP.BIN container, in fact there are posts on both zenhax and xentax, all about an uncertain format:
viewtopic.php?t=3062
https://forum.xentax.com/viewtopic.php?f=10&t=5597

Long story short, I opted for a scanner of compressed files with magic 0xa755aafc that dumps everything correctly and works perfectly:
http://aluigi.org/bms/grp_bin_a755aafc.bms

I don't know if it works also with the other grp.bin archives but if they contain these compressed files (Spike Chunsoft/Danganronpa for PS Vita) then you have the solution.

xperiagenerator, posted Thu May 04, 2017 6:04 pm (22900)

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sorry for my late reply.
Thankyou its working

happydance, posted Fri Sep 29, 2017 2:39 pm (26932)

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strange... it doesn't seem to extract on mine

KamiIsHate, posted Wed Jul 11, 2018 6:17 pm (36692)

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I'm new to translating and i'm doing it for learning purposes so i selected this game to start and i got stuck after sometime cos of the GXT, GX3, PSC, PSM, PTC, SHT, SSA, formats.

Never saw any of them and don't know how to open, edit, etc.

Those files came out of grp.bin files after extraction.

I just want directions of what program or script to use.

Thanks in advance.

LinkOFF, posted Fri Jan 06, 2023 2:18 am (74891)

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Code:

# Bullet Girls PS Vita (without names)

comtype dr12ae

get FILES long
get OFFSET_ALIGN long
get SIZE_ALIGN long
get OFFSET_BITS long
get SIZE_BITS short
get COMP_FLAG short
get DUMMY longlong
get NAMEBLOCKSIZE long
get ZERO long
for i = 0 < FILES
   get VAR long
   xmath OFFSET "(VAR >> OFFSET_BITS) * OFFSET_ALIGN"
   xmath SIZE "(VAR & ((1 << OFFSET_BITS) - 1)) * SIZE_ALIGN"
   if COMP_FLAG == 1
      log "" OFFSET SIZE
   endif
   if COMP_FLAG == 0
      savepos LASTPOS
      math OFFSET   4
      goto OFFSET
      get SIZE long
      get ZSIZE long
      math OFFSET   8
      math ZSIZE - 12
      clog "" OFFSET ZSIZE SIZE
      goto LASTPOS
   endif
next i