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SL01 Encryption? (Golden Time: Vivid Memories)

Read or post about compression. And decompression. Or ask questions how to decompress your files.
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ElyosOfTheAbyss
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SL01 Encryption? (Golden Time: Vivid Memories)

Post by ElyosOfTheAbyss » Thu Nov 17, 2016 12:29 am

I decided to rip Golden Time: Vivid Memories sprites but when I tried to convert the .gtx they didn't work. I opened them in a hex editor and they all start with SL01 and it looks like its a type of encryption rather than a container.

Here are some sample files: https://drive.google.com/open?id=0ByT2b ... Uw0YVF6M3M

Would there be any way to decrypt them?

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Re: SL01 Encryption? (Golden Time: Vivid Memories)

Post by happydance » Thu Nov 17, 2016 8:51 pm

it's not an encryption it's just a lzo1x compression

just made this simple script and worked for the files you've uploaded but don't know if it will work for the rest of the files :).

Code: Select all

comtype lzo1x
goto 0x4
get SIZE long
get ZSIZE long
get NAME FILENAME
string NAME p= "extracted/%s" NAME
clog NAME 0xc ZSIZE SIZE

ElyosOfTheAbyss
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Re: SL01 Encryption? (Golden Time: Vivid Memories)

Post by ElyosOfTheAbyss » Fri Nov 18, 2016 3:21 am

Thank's that works.
Yeah I meant to say compression not encryption. I was really tired when I wrote that.

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Re: SL01 Encryption? (Golden Time: Vivid Memories)

Post by happydance » Fri Nov 18, 2016 8:17 am

ElyosOfTheAbyss wrote:Thank's that works.
Yeah I meant to say compression not encryption. I was really tired when I wrote that.
no problemo, btw how are you ripping the image from the gxt? by scarlet or gxt convert?

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Acewell
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Re: SL01 Encryption? (Golden Time: Vivid Memories)

Post by Acewell » Fri Nov 18, 2016 8:32 am

Noesis also has native support to open those decompressed gxt textures :D

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Re: SL01 Encryption? (Golden Time: Vivid Memories)

Post by happydance » Fri Nov 18, 2016 11:54 am

AceWell wrote:Noesis also has native support to open those decompressed gxt textures :D
it seems neosis cant handle some of those vita gxt, but scarlet/gxt convert can extract some but a few can't still be exported.

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Re: SL01 Encryption? (Golden Time: Vivid Memories)

Post by Acewell » Fri Nov 18, 2016 1:53 pm

according to MrAdults it should be able to handle all of them and you should
upload any that won't work so he might update his plugin if he feels up to it,
but i was mainly referring to the samples provided in this thread when i posted. :)

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Re: SL01 Encryption? (Golden Time: Vivid Memories)

Post by ElyosOfTheAbyss » Sun Nov 20, 2016 4:58 am

happydance wrote:
ElyosOfTheAbyss wrote:Thank's that works.
Yeah I meant to say compression not encryption. I was really tired when I wrote that.
no problemo, btw how are you ripping the image from the gxt? by scarlet or gxt convert?
I'm using scarlet since the normal GXTConverter seems to give me a jumbled up mess when I convert it to png. Though I'm about to try the .gtx noesis plugin.

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