ADCS ESC11 coverage

[JonasBK]

Description

Coverage of the ADCS ESC11 attack paths.

ESC11 attacks exploit misconfigured Enterprise Certificate Authorities that allow inbound relay attacks and impersonation of any domain principal.

This PR implements:

• The new EnterpriseCA property: RPCEncryptionEnforced
• A post-processed edge named CoerceAndRelayNTLMToADCSRPC similar to CoerceAndRelayNTLMToADCS with the following difference:
  • CoerceAndRelayNTLMToADCS: HasVulnerableEndpoint=true
  • CoerceAndRelayNTLMToADCSRPC: RPCEncryptionEnforced=false
• A saved cypher query showing Enterprise CAs vulnerable to ESC11 (RPCEncryptionEnforced=false)
• Fix the look of the other CoerceAndRelayNTLM... entity panel texts

Motivation and Context

Resolves BED-6182

Using this dataset: 20250611101235_BloodHound_esc11.zip

Screenshots (optional):

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• [x] I have met the contributing prerequisites
  • Assigned myself to this PR
  • Added the appropriate labels
  • Associated an issue: https://github.com/SpecterOps/BloodHound/issues/672
  • Read the Contributing guide: https://github.com/SpecterOps/BloodHound/wiki/Contributing
• [x] I have ensured that related documentation is up-to-date
  • Open API docs
  • Code comments (GoDocs / JSDocs)
• [x] I have followed proper test practices
  • Added/updated tests to cover my changes
  • All new and existing tests passed

Summary by CodeRabbit

Summary by CodeRabbit

• New Features

  • Added support for identifying and visualizing a new NTLM relay attack path targeting Active Directory Certificate Services (ADCS) via vulnerable RPC endpoints (ESC11).
  • Introduced new relationship type and properties to represent RPC encryption status and relay paths in the interface.
  • Enhanced search capabilities and queries to detect ESC11-vulnerable enterprise CAs and related certificate template enrollment rights.
  • Added comprehensive help content and abuse walkthroughs for the new attack path, including detection and operational security guidance.

• Bug Fixes

  • None.

• Documentation

  • Expanded in-app help and reference materials to cover the new NTLM relay to ADCS RPC scenario, including detailed steps for both Linux and Windows environments.

• Tests

  • Introduced new integration tests to validate detection and processing of the new NTLM relay to ADCS RPC relationship.

• Style

  • Improved formatting and accessibility of help content with consistent use of UI components for links and code snippets.

[coderabbitai[bot]]

Walkthrough

This update introduces support for the new relationship kind CoerceAndRelayNTLMToADCSRPC, representing NTLM relay attacks to ADCS via RPC endpoints. It extends the schema, backend analysis, UI, and integration tests to handle ESC11 attack scenarios, adds new properties for RPC encryption enforcement, and provides comprehensive help and search capabilities for this attack vector.

Changes

Files / Areas	Change Summary
cmd/api/src/analysis/ad/ntlm_integration_test.go	Added integration tests for NTLM relay to ADCS via RPC, verifying relationship creation and composition.
cmd/api/src/test/integration/harnesses.go, .../harnesses/CoerceAndRelayNTLMToADCSRPC.json	Introduced a new test harness and corresponding JSON graph definition for NTLM relay to ADCS RPC scenarios.
packages/cue/bh/ad/ad.cue	Added new properties (RPCEncryptionEnforced, RPCEncryptionCollected) and relationship kind (CoerceAndRelayNTLMToADCSRPC) to the AD schema.
packages/go/analysis/ad/ad.go, .../ntlm.go, .../post.go	Extended analysis logic to support the new relationship kind, including traversal, validation, and post-processing for RPC-based NTLM relay to ADCS.
packages/go/ein/ad.go, .../incoming_models.go	Added support for extracting and storing the RPCEncryptionEnforced property from CA registry data.
packages/go/graphschema/ad/ad.go, .../common/common.go	Integrated new relationship kind and properties into graph schema enums, property lists, and relationship kind arrays.
packages/javascript/bh-shared-ui/src/commonSearchesAGI.ts, .../commonSearchesAGT.ts	Added new queries and updated existing ones to detect ESC11-vulnerable CAs and NTLM relay edges involving the new relationship kind and property.
packages/javascript/bh-shared-ui/src/components/HelpTexts/CoerceAndRelayNTLMToADCS/LinuxAbuse.tsx, .../WindowsAbuse.tsx	Refactored help text components for NTLM relay to ADCS (HTTP) to use Material-UI components and improve formatting.
packages/javascript/bh-shared-ui/src/components/HelpTexts/CoerceAndRelayNTLMToADCSRPC/*	Added a new suite of help text components for the RPC-based NTLM relay edge, including general info, abuse instructions, opsec, references, composition, and relay target lists.
packages/javascript/bh-shared-ui/src/components/HelpTexts/index.tsx	Registered the new CoerceAndRelayNTLMToADCSRPC help text component in the exported components map.
packages/javascript/bh-shared-ui/src/edgeTypes.tsx	Added CoerceAndRelayNTLMToADCSRPC to the list of NTLM relay edge types.
packages/javascript/bh-shared-ui/src/graphSchema.ts	Extended enums and mappings to include the new relationship kind and properties, updating display functions and arrays accordingly.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant UI
    participant API
    participant Analysis
    participant GraphDB

    User->>UI: Initiates search or views edge info for ESC11/NTLM relay to ADCS RPC
    UI->>API: Requests edge composition or relay targets for CoerceAndRelayNTLMToADCSRPC
    API->>Analysis: Analyzes graph for vulnerable Enterprise CAs (RPCEncryptionEnforced = false)
    Analysis->>GraphDB: Queries nodes and relationships with new properties/kind
    GraphDB-->>Analysis: Returns matching nodes/edges
    Analysis-->>API: Returns composition/targets
    API-->>UI: Returns data
    UI-->>User: Displays help texts, relay targets, and composition info

Suggested labels

api, user interface

Suggested reviewers

• mvlipka
• superlinkx

Poem

A rabbit hopped through graphs anew,
Finding edges, bright and true—
Now RPC relays join the dance,
ESC11 gets a fighting chance!
With help texts, tests, and schema wide,
This bunny beams with coder pride.
🐇✨

[!NOTE]

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Learn more here, or try it out under "Finishing Touches" below.

✨ Finishing Touches

• [ ] 📝 Generate Docstrings

🧪 Generate unit tests

• [ ] Create PR with unit tests
• [ ] Post copyable unit tests in a comment
• [ ] Commit unit tests in branch adcsesc11

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