TwoLeggedRat, posted Tue Jan 26, 2021 10:23 pm (61846)

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manpaint wrote:

I have been trying to extract the data from the Sx1.05 files since two day now. I have not yet managed to do anything but I have recorded my finding. It may be useful to someone (see attachement).

TLDR of my findings:

-Sx1.05 are likely archive types. In the case of adventure background, each files seems to contains only one (conjecture).
-Sx1.24 files apparently exist according to the RAM.
-Advbg_001.bytes seems to contains a Advbg_001.bin file according to RAM.
-Ninjaripper and GLintercept do not work with Nox Emulator.
-Starly Girls' SX files have a clear file (archive-like) structure wheras Mei does not.
-DecStarlyGirls does something to the files, but I think its designed to exact .unity3d files from a master file instead of decrypting SX files.
-AdvBg_011 is apparently this background ( https://cdn.discordapp.com/attachments/384427950478589972/800177194508222505/AdvBg_011.png )

-SX files hex header appears to be:

Code:

53 78 31 2E 30 35 00 03 XX XX XX XX XX XX XX XX 00 04 00 04 00 00 08 00 08 00 00 00 
00 02 FF FF FF FF F8 FF FF FF F8 FF FF FF F8 FF FF FF F8 FF FF FF F8 FF FF FF F8 FF

Research notes.txt also contains possible relasted data that I extracted from Nox emulator's RAM.

Edit: SxamTools was updated to support SX files but its written in swift and therefore don't work well with with Windows. If someone could try to port the code it would be great. https://github.com/tellowkrinkle/SxamTools

According to tellowkrinkle, Sx1.05 files are compressed etc1 4bpp texture data, but they've split images into two pieces, each with only two color channels (blue is approximately zero in both)

Sorry for the late notice, but, if you didn't notice (unless I'm not realizing something myself), but the files could be extracted using this. https://github.com/clienthax/higurashimeitool (Based on tellowkrinke's Sxam Tools.)

manpaint, posted Sat Feb 06, 2021 6:42 pm (62047)

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TwoLeggedRat wrote:

Sorry for the late notice, but, if you didn't notice (unless I'm not realizing something myself), but the files could be extracted using this. https://github.com/clienthax/higurashimeitool (Based on tellowkrinke's Sxam Tools.)

Well the guy is working on SX support (see the report I made on that Girhub page) but as the time of writing this, its not done.

TwoLeggedRat, posted Tue Jul 13, 2021 6:47 am (65171)

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N/A.