Sliver GUI

Sliver GUI client.

⚠️ THIS PROJECT IS PRE-ALPHA AND FOR DEVELOPERS ONLY ⚠️

• The GUI client is NOT feature complete, expect bugs and missing features.
• Not accepting any issues/bug reports at this time, however feel free to submit PRs.
• There's no documentation or tutorials aside from this readme (and the repo wiki).

Install

Download the latest release and connect to a Sliver server using a standard operator profile. See the wiki for more details.

Features

• You can click on stuff!
• Sandboxed JavaScript scripting engine (with built-in script editor)
• i18n Language Support (French, Spanish, Japanese, Chinese)

FAQ

Why Electron!?

Because I value my development time more than your RAM.

Are Electron Apps Secure?

I tried ¯\(ツ)/¯. Having personally written multiple exploits for Electron apps, I like to think I have a fighting chance, and I really did go thru a lot of effort to make the Sliver GUI as secure as possible (the UI code is sandboxed and I even patched all of the evals out of the protobuf code). You can read more about the application architecture here. In short:

• The renderer process is sandboxed, and preload scripts have context isolation enabled. Methods in the main process can only be called via postMessage(), and all JSON arguments must pass JSON-Schema checks.
• No content runs in a file:// origin, all content is served from internal Electron protocol handlers (i.e. app://).
• A strict content content security policy (CSP) is applied to all origins (script-src does not allow unsafe-inline or unsafe-eval).
• Nearly the entire interface is implemented via Angular data binding; there are zero calls to bypassSecurityTrustHtml().

If you're concerned about security, I also encourage you to audit the code! See the repo security policy for bounties.

Why Not a Web Interface?

Sliver clients connect using gRPC over Mutual TLS (mTLS), which is not available from within a browser. Even sandboxed, Electron also lets us implement other native app integrations that would otherwise not be possible.

Build

From the root of the git repo, to build your local platform:

npm install
cd main/workers/worker && npm install && cd ../../..
npm install -g electron-packager
npm install -g @angular/cli
npm run electron:local

If that works, then you should be able to do platform specific builds (publish:macos will build both x64 and arm64):

npm run publish:macos
npm run publish:windows
npm run publish:linux

You can also use publish:windows_exe to build a portable (i.e., no installer) Windows executable.

To work on i18n/translations, you'll likely need to install the ngx-i18nsupport package:

npm install -g ngx-i18nsupport