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post-exploiting-microsoft-graph-with-graphrunner

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Runs GraphRunner, a PowerShell post-exploitation toolset built on the Microsoft Graph API, to perform tenant recon, establish persistence (OAuth app injection, inbox rules), escalate privilege via group manipulation, and pillage mailboxes, SharePoint, and Teams data from a foothold Graph token. Use during authorized red-team engagements against Microsoft 365/Entra ID tenants once you hold a Graph token.

skills/post-exploiting-microsoft-graph-with-graphrunner/SKILL.md

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# Post-Exploiting Microsoft Graph with GraphRunner

> **Authorized use only:** GraphRunner performs offensive actions against live Microsoft 365 / Entra ID tenants — deploying OAuth apps, cloning groups, adding members, and reading mailboxes, SharePoint, and Teams. Run it only against tenants you own or are explicitly authorized in writing to test. Unauthorized use is illegal.

## Overview

GraphRunner (Beau Bullock / Black Hills Information Security) is a PowerShell post-exploitation toolset built entirely on the **Microsoft Graph API**. Given a foothold token, it performs recon, establishes persistence, escalates privilege, and pillages M365 data — all through Graph, which blends in with normal traffic and bypasses many endpoint controls. It is the natural follow-on to credential/token theft (e.g., device-code phishing or ROADtools): once you hold Graph access, GraphRunner operationalizes it.

The toolset is a single PowerShell module (`GraphRunner.ps1`) exposing dozens of functions grouped by purpose:

- **Authentication** — `Get-GraphTokens` (device-code login), `Invoke-RefreshGraphTokens`, `Invoke-AutoTokenRefresh`, `Invoke-ImportTokens`, `Invoke-RefreshToSharePointToken`.
- **Recon & Enumeration** — `Invoke-GraphRecon` (tenant/user permission summary), `Invoke-DumpCAPS` (conditional-access policies), `Invoke-DumpApps` (app registrations / consent grants), `Get-AzureADUsers`, `Get-SecurityGroups`, `Get-UpdatableGroups`, `Get-DynamicGroups`, `Invoke-SearchUserAttributes`, `Invoke-GraphOpenInboxFinder`, `Find-PermissiveCalendars`.
- **Persistence** — `Invoke-InjectOAuthApp` (deploy a malicious OAuth app for consent-grant persistence), `Invoke-CreateInboxForwardingRule`.
- **Privilege Escalation** — `Get-UpdatableGroups`, `Invoke-AddGroupMember`, `Invoke-SecurityGroupCloner`, `Invoke-InviteGuest`.
- **Pillage / Data Search** — `Invoke-SearchMailbox`, `Invoke-SearchSharePointAndOneDrive`, `Invoke-SearchTeams`, `Get-TeamsChat`, `Invoke-DriveFileDownload`.
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