Extracting .zim files from ppsspp

Extraction and unpacking of game archives and compression, encryption, obfuscation, decoding of unknown files
Old Creator
Posts: 39
Joined: Sat Feb 20, 2021 8:04 am

Extracting .zim files from ppsspp

Post by Old Creator »

Can someone make a QuickBMS Script to Unpack this file?
This is .zim files from PPSSPP.
aluigi
Site Admin
Posts: 12984
Joined: Wed Jul 30, 2014 9:32 pm

Re: Extracting .zim files from ppsspp

Post by aluigi »

I guess it's just a raw image.
The format is simple:
"ZIMG"
32bit width
32bit heigh
32bit unknown
zlib compressed data

The one you uploaded is a 2048 x 2048 16bit image representing japanese characters and the playstation buttons.
Old Creator
Posts: 39
Joined: Sat Feb 20, 2021 8:04 am

Re: Extracting .zim files from ppsspp

Post by Old Creator »

aluigi wrote:I guess it's just a raw image.
The format is simple:
"ZIMG"
32bit width
32bit heigh
32bit unknown
zlib compressed data

The one you uploaded is a 2048 x 2048 16bit image representing japanese characters and the playstation buttons.

How to open it?
aluigi
Site Admin
Posts: 12984
Joined: Wed Jul 30, 2014 9:32 pm

Re: Extracting .zim files from ppsspp

Post by aluigi »

There are some image editing software supporting raw images with various options, Gimp, Irfanview, and so on.