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Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
58 lines
2.1 KiB
Markdown
58 lines
2.1 KiB
Markdown
# API Reference: Threat Intelligence Feed Integration Agent
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## Overview
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Ingests threat intelligence from TAXII 2.1 servers, Abuse.ch URLhaus, and Feodo Tracker. Normalizes all indicators to STIX 2.1 format, deduplicates, and exports as a STIX bundle.
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## Dependencies
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| Package | Version | Purpose |
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|---------|---------|---------|
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| requests | >=2.28 | HTTP API calls |
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| taxii2-client | >=2.3 | TAXII 2.1 server communication |
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| stix2 | >=3.0 | STIX 2.1 object creation and serialization |
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## CLI Usage
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```bash
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# Ingest from multiple sources
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python agent.py --urlhaus --feodo --output ti_bundle.json
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# Ingest from TAXII feed
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python agent.py --taxii-url https://taxii.example.com/taxii2/ \
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--taxii-collection https://taxii.example.com/taxii2/collections/abc/ \
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--taxii-user user --taxii-pass pass
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```
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## Key Functions
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### `ingest_taxii_feed(taxii_url, collection_url, username, password, hours_back)`
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Connects to a TAXII 2.1 collection and retrieves indicators added within the specified time window.
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### `ingest_urlhaus_feed()`
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Fetches recent malicious URLs from the URLhaus API (`https://urlhaus-api.abuse.ch/v1/urls/recent/`).
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### `ingest_feodotracker()`
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Downloads the Feodo Tracker recommended C2 IP blocklist in JSON format.
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### `normalize_to_stix(indicators)`
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Converts raw indicators to STIX 2.1 `Indicator` objects with proper patterns for ipv4, domain, url, and sha256 types.
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### `deduplicate(indicators)`
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Removes duplicate indicators across feeds using SHA-256 hash of `type:value`.
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### `export_stix_bundle(stix_objects, output_path)`
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Serializes STIX objects into a `Bundle` and writes to a JSON file.
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### `push_to_splunk_ti(splunk_url, session_key, indicators)`
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Pushes indicators to the Splunk ES threat intelligence framework via REST API.
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## External APIs Used
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| API | Endpoint | Auth | Purpose |
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|-----|----------|------|---------|
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| TAXII 2.1 | Configurable | Basic auth | STIX indicator ingestion |
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| URLhaus | `https://urlhaus-api.abuse.ch/v1/` | None | Malicious URL feed |
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| Feodo Tracker | `https://feodotracker.abuse.ch/downloads/` | None | C2 IP blocklist |
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| Splunk REST | `/services/data/threat_intel/item/ip_intel` | Session key | TI push |
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