unsegaREBORN

SEGA arcade image toolkit

features

• APP/OPT/APM3 decryption
• NTFS/exFAT support
• VHD support (fixed, dynamic, differencing)
• stream directly from encrypted image (no temp files)
• preserved timestamps
• AES-NI accelerated with software fallback

build

build.cmd          # windows
sh build.cmd       # linux

output: build/unsegareborn-{platform}-x64[.exe]

usage

unsegareborn [flags] <files>

flags:

• -o dir output directory
• -n decrypt only, skip extraction
• -w write intermediate .ntfs/.exfat files
• -p file parent for differencing VHD
• -s silent
• -v verbose
• -vn version

drag and drop works on windows

keys

prebuilt releases include keys. source does not.

to build from source:

1. copy include/keys.inc.example to include/keys.inc
2. add your keys in the format shown

format:

{"SDEZ", {0xd1,0x36,...}, {0xc4,0x84,...}, true},

platforms

platform	method
win x64	native (ntdll only)
win arm64	x64 emulation
linux x64	native (static no libc)
linux arm64	box64/qemu
macos	wine (untested)

release

push version tag:

git tag 2026020501
git push origin 2026020501

ci builds both platforms and creates a github release with binaries

license

UNLICENSE