toastnotify-bof

A Beacon Object File (BOF) for sending Windows toast notifications. Pairs with the blog post for full context and use cases.

subcommands

getaumid

Enumerates AUMIDs (Application User Model IDs) registered on the system. Use this to find a suitable identity to borrow before sending a toast.

inline-execute toastnotify.o go getaumid

Example output:

[Notifications\Settings - HKCU]
  Microsoft.Windows.Explorer
  MSEdge
  com.squirrel.AnthropicClaude.claude
  ...
[Notifications\Settings - HKLM]
  ...
  com.squirrel.AnthropicClaude.claude
  ...

sendtoast

Sends a standard toast notification with a title and body text. Builds the XML internally using ToastGeneric.

inline-execute toastnotify.o go sendtoast "MSEdge" "Title" "Notification body"

custom

Sends a toast from an arbitrary XML payload encoded in base64. This is where the interesting stuff happens with full template support: actions, protocol links, images, progress bars, selection inputs, hero images. And ther's an app for that!

inline-execute toastnotify.o go custom "MSEdge" "<base64-encoded-xml>"

Example payload before encoding:

<toast>
  <visual>
    <binding template="ToastGeneric">
      <text>Action Required</text>
      <text>Your session requires re-authentication. Click to continue.</text>
    </binding>
  </visual>
  <actions>
    <action content="Continue"
            activationType="protocol"
            arguments="https://your-page-here.com"/>
  </actions>
</toast>

Encode it and enjoy.