You have to apply the necessary Cyrene patch. It allows you to connect to the local server and replaces encryption keys with custom ones. After you download patch, extract it to client folder.

From source

Windows:

git clone https://git.xeondev.com/HonkaiSlopRail/dahlia-sr-0.14.1
cd dahlia-sr-0.14.1
zig build run-dispatch
zig build run-gameserver

Using Pre-built Binaries

Navigate to the Releases page and download the latest release for your platform.

Connecting

Get 3.7.5X CN client,

After you extract client package, delete AccountPlatNative.dll inside \StarRail_Data\Plugins\x86_64 in order to make this PS work (recommend rename it instead in case something go wrong)

Functionality (work in progress)

Login and player spawn
Test battle via calyx
MOC/PF/AS simulator with custom stage sellection
Anomaly Arbitration (Challenge Peak)
Gacha simulator
Support command for Sillyism

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change, and why.

Bug Reports

If you find a bug, please open an issue with as much detail as possible. If you can, please include steps to reproduce the bug.

Bad issues such as "This doesn't work" will be closed immediately, be sure to provide exact detailed steps to reproduce your bug. If it's hard to reproduce, try to explain it and write a reproducer as best as you can.