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Logan Vaughan edited this page Apr 15, 2026 · 1 revision

Calendar & Scheduling

GraphRobber accesses calendar data through the Microsoft Graph API, providing event browsing, free/busy schedule checking, and meeting room discovery.

Page: Calendar (sidebar > Services)

Calendar Events

Browse the user's calendar with full event details:

  • Subject and body -- meeting titles and descriptions (often contain credentials, VPN instructions, dial-in info)
  • Attendees -- who was invited and their response status
  • Online meeting URL -- Teams/Zoom links
  • Location -- physical or virtual meeting location
  • Recurrence -- recurring meeting patterns
  • Sensitivity and importance -- flagged events

Date Range

Specify a start and end date to scope the view. Events are returned in reverse chronological order with pagination (up to 100 per page, 20 pages max).

Free/Busy Schedule

Check the availability of other users in the organization:

  1. Enter one or more UPNs (comma or newline separated, max 20)
  2. Specify a date range
  3. Hit Check Schedule -- returns availability view at 30-minute intervals

Each user's schedule shows busy/free/tentative/OOF blocks. Useful for:

  • Identifying when executives are in meetings (social engineering timing)
  • Confirming office hours and time zones
  • Cross-referencing with Teams/Outlook activity

Meeting Room Enumeration

Click Find Rooms to enumerate all conference rooms registered in Exchange Online. Returns room name, email address, building, floor, and capacity.

Useful for org recon -- room naming often reveals office locations, building names, and floor layouts.

Required Scopes

Scope What For
Calendars.Read Read calendar events
Schedule.Read.All Free/busy schedule check
Place.Read.All Room enumeration

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