# Performing Cloud Asset Inventory With Cartography

> Use when perform comprehensive cloud asset inventory and relationship mapping using Cartography to build a Neo4j security graph of infrastructure assets, IAM permissions, and attack paths across AWS, GCP, and Azure. Use when performing comprehensive cloud asset inventory and relationship mapping using cartography.

- Skill: `oyi77/performing-cloud-asset-inventory-with-cartography` (Agent Skill)
- Install (CLI): `npx skillmds add oyi77/performing-cloud-asset-inventory-with-cartography`
- Raw SKILL.md: https://api.skillmd.com/api/skills/oyi77/performing-cloud-asset-inventory-with-cartography/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- License: Apache-2.0
- Author: oyi77 (https://skillmd.com/u/oyi77)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/oyi77/performing-cloud-asset-inventory-with-cartography

---



# Performing Cloud Asset Inventory with Cartography

## Overview

Cartography is a CNCF sandbox project (originally created at Lyft) that consolidates infrastructure assets and their relationships into a Neo4j graph database. It queries cloud APIs to discover resources, maps relationships between them, and enables security teams to identify attack paths, generate asset reports, and find areas for security improvement. The graph model reveals hidden connections such as IAM permission chains, network paths, and cross-account trust relationships.


## When to Use
**Trigger phrases:**
- "performing cloud asset inventory with cartography"
- "Perform comprehensive cloud asset inventory and relationship mapping using Carto"


- When conducting security assessments that involve performing cloud asset inventory with cartography
- When following incident response procedures for related security events
- When performing scheduled security testing or auditing activities
- When validating security controls through hands-on testing

## Prerequisites

- Python 3.8+
- Neo4j 4.x or 5.x database
- Cloud provider credentials (AWS, GCP, Azure)
- Docker (optional, for Neo4j deployment)
- Minimum 4GB RAM for Neo4j, more for large environments

## Installation

```bash
# Install Cartography
pip install cartography

# Verify installation
cartography --help
```

### Deploy Neo4j with Docker

```bash
docker run -d \
  --name neo4j \
  -p 7474:7474 -p 7687:7687 \
  -e NEO4J_AUTH=neo4j/changethispassword \
  -e NEO4J_PLUGINS='["apoc"]' \
  -v neo4j_data:/data \
  neo4j:5-community
```

## Running Cartography

This section covers running cartography for performing cloud asset inventory with cartography.

- Ensure all prerequisites are met before proceeding
- Follow the documented workflow steps in sequence
- Record results and any anomalies encountered during this phase
### Basic AWS Sync

```bash
# Sync AWS account data to Neo4j
cartography \
  --neo4j-uri bolt://localhost:7687 \
  --neo4j-user neo4j \
  --neo4j-password-env-var NEO4J_PASSWORD
```

### Sync specific AWS modules

```bash
cartography \
  --neo4j-uri bolt://localhost:7687 \
  --neo4j-user neo4j \
  --neo4j-password-env-var NEO4J_PASSWORD \
  --aws-sync-all-profiles
```

### GCP Sync

```bash
cartography \
  --neo4j-uri bolt://localhost:7687 \
  --neo4j-user neo4j \
  --neo4j-password-env-var NEO4J_PASSWORD \
  --gcp-requested-syncs compute iam storage
```

## Security-Focused Cypher Queries

This section covers security-focused cypher queries for performing cloud asset inventory with cartography.

- Ensure all prerequisites are met before proceeding
- Follow the documented workflow steps in sequence
- Record results and any anomalies encountered during this phase
### Find all S3 buckets with public access

```cypher
MATCH (b:S3Bucket)
WHERE b.anonymous_access = true
   OR b.anonymous_actions IS NOT NULL
RETURN b.name, b.anonymous_actions, b.region, b.arn
ORDER BY b.name
```

### Identify IAM users with admin policies

```cypher
MATCH (user:AWSUser)-[:POLICY]->(policy:AWSPolicy)
WHERE policy.name = 'AdministratorAccess'
   OR policy.arn CONTAINS 'AdministratorAccess'
RETURN user.name, user.arn, policy.name, user.password_last_used
```

### Find EC2 instances exposed to internet

```cypher
MATCH (instance:EC2Instance)-[:MEMBER_OF_EC2_SECURITY_GROUP]->(sg:EC2SecurityGroup)
      -[:MEMBER_OF_EC2_SECURITY_GROUP_RULE]->(rule:IpRule)
WHERE rule.fromport <= 22 AND rule.toport >= 22
  AND rule.protocol IN ['tcp', '-1']
  AND '0.0.0.0/0' IN rule.ipranges
RETURN instance.instanceid, instance.publicipaddress, sg.groupid, sg.name
```

### Discover cross-account trust relationships

```cypher
MATCH (role:AWSRole)-[:TRUSTS_AWS_PRINCIPAL]->(principal:AWSPrincipal)
WHERE principal.arn CONTAINS ':root'
  AND NOT principal.arn CONTAINS role.accountid
RETURN role.arn, role.name, principal.arn AS trusted_account
ORDER BY role.name
```

### Find attack path from public EC2 to sensitive S3

```cypher
MATCH path = (instance:EC2Instance)-[:STS_ASSUME_ROLE_ALLOWS|MEMBER_OF_EC2_SECURITY_GROUP|
  POLICY|INSTANCE_PROFILE*1..5]->(bucket:S3Bucket)
WHERE instance.publicipaddress IS NOT NULL
  AND bucket.name CONTAINS 'sensitive'
RETURN path
LIMIT 25
```

### Identify unused IAM roles

```cypher
MATCH (role:AWSRole)
WHERE role.last_used IS NULL
   OR role.last_used < datetime().epochMillis - (90 * 24 * 60 * 60 * 1000)
RETURN role.name, role.arn, role.last_used
ORDER BY role.last_used
```

### Find Lambda functions with overprivileged roles

```cypher
MATCH (func:AWSLambda)-[:STS_ASSUME_ROLE_ALLOWS]->(role:AWSRole)-[:POLICY]->(policy:AWSPolicy)
WHERE policy.name = 'AdministratorAccess'
RETURN func.name, func.arn, role.name, policy.name
```

### Network path analysis

```cypher
MATCH (vpc:AWSVpc)-[:RESOURCE]->(subnet:EC2Subnet)-[:MEMBER_OF_SUBNET]->(instance:EC2Instance)
WHERE instance.publicipaddress IS NOT NULL
RETURN vpc.id, subnet.subnetid, subnet.cidr_block, instance.instanceid,
       instance.publicipaddress, instance.state
```

## Scheduling Regular Syncs

This section covers scheduling regular syncs for performing cloud asset inventory with cartography.

- Ensure all prerequisites are met before proceeding
- Follow the documented workflow steps in sequence
- Record results and any anomalies encountered during this phase
### Cron-based sync

```bash
# Add to crontab - sync every 6 hours
0 */6 * * * /usr/local/bin/cartography \
  --neo4j-uri bolt://localhost:7687 \
  --neo4j-user neo4j \
  --neo4j-password-env-var NEO4J_PASSWORD \
  >> /var/log/cartography/sync.log 2>&1
```

### Docker Compose deployment

```yaml
version: '3.8'
services:
  neo4j:
    image: neo4j:5-community
    ports:
      - "7474:7474"
      - "7687:7687"
    environment:
      NEO4J_AUTH: neo4j/securepwd123
      NEO4J_PLUGINS: '["apoc"]'
      NEO4J_dbms_memory_heap_max__size: 4G
    volumes:
      - neo4j_data:/data

  cartography:
    image: ghcr.io/cartography-cncf/cartography:latest
    depends_on:
      - neo4j
    environment:
      NEO4J_PASSWORD: securepwd123
      AWS_DEFAULT_REGION: us-east-1
    command: >
      --neo4j-uri bolt://neo4j:7687
      --neo4j-user neo4j
      --neo4j-password-env-var NEO4J_PASSWORD

volumes:
  neo4j_data:
```

## Data Model Overview

This section covers data model overview for performing cloud asset inventory with cartography.

- Ensure all prerequisites are met before proceeding
- Follow the documented workflow steps in sequence
- Record results and any anomalies encountered during this phase
### Key Node Types
- `AWSAccount`, `GCPProject`, `AzureSubscription`
- `EC2Instance`, `S3Bucket`, `RDSInstance`, `AWSLambda`
- `AWSUser`, `AWSRole`, `AWSGroup`, `AWSPolicy`
- `EC2SecurityGroup`, `EC2Subnet`, `AWSVpc`
- `GCPInstance`, `GCSBucket`, `GCPRole`

### Key Relationship Types
- `RESOURCE`: Account owns resource
- `POLICY`: Principal has policy attached
- `STS_ASSUME_ROLE_ALLOWS`: Principal can assume role
- `MEMBER_OF_EC2_SECURITY_GROUP`: Instance belongs to SG
- `TRUSTS_AWS_PRINCIPAL`: Cross-account trust

## When NOT to Use

- You don't have explicit written authorization to test
- Task is about defense/detection, not offense (use detection skills)
- You need to implement security controls (use implementing-* skills)
- Task requires compliance auditing (use auditing-* skills)
- You're investigating an incident (use incident response skills)
- Target is out of scope for your engagement
- Task is about vulnerability scanning only (use scanning tools)


## Red Flags

- Performing actions without explicit written authorization from the asset owner
- Testing against production systems without a defined scope and rules of engagement
- Modifying cloud IAM policies or security groups without approval
- Exposing cloud credentials or secrets in logs or reports
- Running scans that generate excessive API calls and trigger billing alerts

## Verification

- All steps executed successfully against a test environment before production use
- Output documented with screenshots or logs demonstrating expected behavior
- Cloud resource changes reverted or documented as intentional
- IAM policies reviewed for least-privilege compliance after testing
- No residual test resources left running (cost and security check)

## References

- Cartography GitHub: https://github.com/cartography-cncf/cartography
- Cartography Documentation: https://cartography.dev
- CNCF Sandbox Project
- Neo4j Cypher Query Language Reference

## Process

1. Analyze the task requirements
2. Apply domain expertise
3. Verify output quality

## Anti-Rationalization Table

| Rationalization | Reality |
|---|---|
| "We are too small to be targeted" | Automated attacks target everyone. Size does not matter. |
| "Security slows us down" | A breach slows you down 100x more. Build security in from the start. |
| "We will fix it after launch" | Vulnerabilities in production are exploited within hours. Fix before deploy. |