attacking-entra-id

attacking-entra-id is a skill for Claude Code from trilwu/secskills. It costs 99 tokens per session (3,994 once invoked), scanned C, original, MIT.

A security-testing guide for Microsoft Entra ID, formerly called Azure Active Directory. Entra ID manages identities and access for Microsoft 365, Azure, and connected applications.

In plain words
What is it for?
Use it to enumerate a tenant, test password-spraying defenses, examine OAuth and refresh tokens, review applications and service principals, assess Conditional Access, and test hybrid identity connections.
Why use it?
It helps uncover weaknesses in cloud identity systems, where stolen tokens, unsafe application permissions, or gaps in access policies can open access to many services at once.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the secskills-offense plugin — 40 skills shipped together

Good fit Use it to enumerate a tenant, test password-spraying defenses, examine OAuth and refresh tokens, review applications and service principals, assess Conditional Access, and test hybrid identity connections.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/trilwu/secskills/attacking-entra-id
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add trilwu/secskills --skill attacking-entra-id
Clone the repo
git clone --depth 1 https://github.com/trilwu/secskills

Made for: Claude Code.

Or install secskills-offense, the plugin that ships this one along with the rest of its 40 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for attacking-entra-id

README.md
[![agentmods](https://agentmods.dev/badge/skills/trilwu/secskills/attacking-entra-id/github.svg)](https://agentmods.dev/skills/trilwu/secskills/attacking-entra-id)
Your own site
<a href="https://agentmods.dev/skills/trilwu/secskills/attacking-entra-id"><img src="https://agentmods.dev/badge/skills/trilwu/secskills/attacking-entra-id/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for attacking-entra-id

Your own site · 80×15
<a href="https://agentmods.dev/skills/trilwu/secskills/attacking-entra-id"><img src="https://agentmods.dev/badge/skills/trilwu/secskills/attacking-entra-id.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,994 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00099 $0.03994
Opus 5 $0.00049 $0.01997
Sonnet 5 $0.00020 $0.00799
Haiku 4.5 $0.00010 $0.00399

Measured 7d ago against content hash 798116fa21b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade C, and why

attacking-entra-id scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Cloud metadata endpointhighServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

"http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=https://graph.microsoft.com"

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl https://login.microsoftonline.com/target.com/.well-known/openid-configuration
secskills-offense/skills/attacking-entra-id/SKILL.md · 429 lines

How it starts

The opening of the file, as written. The whole thing — 429 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Attacking Entra ID

Entra ID (formerly Azure AD) is the identity control plane for Microsoft 365, Azure, and thousands of SaaS integrations. Compromising it grants access to everything those identities protect: mailboxes, SharePoint, Azure subscriptions, and any application that trusts the tenant. Despite this, Entra ID environments are routinely less monitored than on-premises Active Directory. Most organizations lack equivalent detection coverage for cloud identity attacks, and the attack surface -- OAuth tokens, application consent, service principals, Conditional Access gaps -- is fundamentally different from traditional AD.

Only against tenants you are authorized to test.

When to Use

  • Entra ID tenant reconnaissance and enumeration
  • Password spraying against Microsoft 365 / Azure AD endpoints
  • Stealing or replaying OAuth tokens, refresh tokens, and PRTs
  • Abusing application registrations, service principals, and consent grants
  • Bypassing Conditional Access policies
  • Hybrid identity attacks (Azure AD Connect, PTA agents)

When NOT to Use

  • On-premises Active Directory attacks (Kerberoasting, DCSync, lateral movement) -- use attacking-active-directory
  • General AWS/Azure/GCP infrastructure (VMs, storage, IAM roles) -- use exploiting-cloud-platforms
  • AD CS certificate abuse -- use abusing-adcs
  • Detecting these attacks defensively -- use engineering-detections

Initial Reconnaissance

Tenant discovery requires no credentials. Start here to confirm the target tenant exists, identify federation configuration, and map the attack surface.

# AADInternals -- tenant recon
Import-Module AADInternals
Invoke-AADIntReconAsOutsider -DomainName target.com

# Get tenant ID from OpenID configuration
curl https://login.microsoftonline.com/target.com/.well-known/openid-configuration

# Check user realm (managed vs. federated)
curl "https://login.microsoftonline.com/common/userrealm/[email protected]?api-version=2.0"

# ROADtools -- authenticated enumeration (once you have creds)
roadrecon auth -u [email protected] -p 'Password'
roadrecon gather
roadrecon gui
# Browse the GUI: users, groups, applications, service principals, conditional access

# AzureHound -- BloodHound collection for Azure/Entra
azurehound -u [email protected] -p 'Password' list --tenant target.com -o output.json

Read the full file on GitHub · 429 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 429 lines · 99 tokens per session scan C 798116fa21b1

Subscribe to this mod's changes

attacking-entra-id is a skill published in the GitHub repository trilwu/secskills (138 stars, last pushed 6d ago), licensed MIT. It adds 99 tokens to every session and 3,994 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it C with 2 findings (cloud metadata endpoint, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

Other skills, from other repositories

claude-md-improver

Audit and improve CLAUDE.md files in repositories. Use when user asks to check, audit, update, improve, or fix CLAUDE.md files. Scans for all CLAUDE.md files, evaluates quality against templates, outputs quality report, then makes targeted updates. Also use when the user mentions "CLAUDE.md maintenance" or "project…

anthropics/claude-plugins-official · 82 tokens

agent-platform-rag-engine-management

Manage and query Agent Platform RAG Engine Corpora and retrieve grounded contexts using the Google GenAI SDK. Use when listing RAG corpora or files, inspecting a corpus, retrieving contexts, or generating content grounded in a RAG corpus. Do not use for standard database queries (use SQL/Spanner skills), Google…

google/skills · 85 tokens

gke-workload-security

Audits, configures, and hardens workload-level security controls for Google Kubernetes Engine (GKE) applications and namespaces. Covers running cluster security audits (auditcluster.sh), configuring Workload Identity Federation (impersonation, KSA/GSA binding, and pod setup), enforcing Network Policies (default-deny…

google/skills · 181 tokens

gke-reliability

Improves GKE workload reliability, using PDBs, health probes, and topology spread constraints. Use when configuring GKE workload reliability, setting up PDBs, or configuring GKE health probes (liveness, readiness, startup). Don't use for disaster recovery setup or full cluster backups (use gke-backup-dr instead).

google/skills · 73 tokens

agent-platform-model-registry

Agent Platform Model Registry Management. Use when you need to upload, list, describe, update, or delete machine learning models (and their versions) in the Agent Platform Model Registry. Don't use for model training, model deployment to endpoints, or managing non-Agent Platform models.

google/skills · 60 tokens

google-cloud-solution-agentic-analytics-spark-knowledge-catalog

Discovers requirements and generates guidance to design and deploy a governed, secure agentic-analytics solution for data that's distributed across Google Cloud, other cloud providers, or on-premises. Data that's outside Google Cloud (such as data from Databricks, Snowflake, Salesforce, SAP, or Oracle systems) is…

google/skills · 138 tokens