Lookup shodan

lookup-shodan

Queries Shodan for host reconnaissance data on IPs. For domains, resolves DNS first then queries the resolved IP. Retrieval only — do not interpret results.

When to invoke

• User asks what ports/services an IP exposes
• Investigation skill needs infrastructure fingerprinting
• Vulnerability scan context (CVEs on exposed services)

How to invoke

Two CLIs are provided. Pick by capability needed:

Basic host lookup — Node CLI (zero deps)

node tools/clis/shodan.js ip <ip>
node tools/clis/shodan.js domain <domain>     # resolves DNS first, then queries IP

Hits the host endpoint only. Best for fast retrieval inside an investigation chain. Throttles at 1 req/sec.

Full search + DNS surface — Python CLI (uses official shodan-python SDK)

python3 tools/clis/shodan.py host <ip> [--history] [--minify]
python3 tools/clis/shodan.py search "<query>" [--limit N] [--page N] [--facets F1:N,F2:N]
python3 tools/clis/shodan.py count "<query>" [--facets F1:N,F2:N]
python3 tools/clis/shodan.py dns resolve <hostname[,hostname]>
python3 tools/clis/shodan.py dns reverse <ip[,ip]>
python3 tools/clis/shodan.py dns domain <domain>
python3 tools/clis/shodan.py info
python3 tools/clis/shodan.py ports
python3 tools/clis/shodan.py services

Self-bootstraps a private venv at tools/clis/.venv-shodan/ on first run.

Capabilities the Node CLI doesn't have, ordered by CTI value:

1. Search — the killer pivot. Find every host on the internet matching a banner, certificate, JARM, favicon hash, HTTP title, exposed product+version, or geolocation+org combination. This is how you go from one piece of attacker infrastructure to the rest of the cluster.
2. Count — get the total result count for a query without burning result credits. Use this BEFORE a search to estimate scope and avoid query-credit waste on broad queries.
3. Facets — group result counts by country, org, port, product, asn, tag, vuln, etc. Single call gives you the breakdown.
4. Domain info — subdomains + DNS records for a domain in one call.
5. Reverse DNS for one or many IPs.
6. Account info — see remaining query credits BEFORE a campaign.
7. History — historical banner observations on a host (paid plans).

Search query examples:

# Find all Cobalt Strike Team Servers visible to Shodan
python3 tools/clis/shodan.py search 'product:"Cobalt Strike Team Server"'

# Count C2-pattern hosts in a country before searching
python3 tools/clis/shodan.py count 'http.title:"Login Page" country:RU'

# Facet a query — what orgs / countries host this software?
python3 tools/clis/shodan.py search 'product:"Sliver" port:443' --facets org:10,country:10

# Find all hosts presenting a specific certificate CN
python3 tools/clis/shodan.py search 'ssl.cert.subject.CN:"badcorp.example"'

# Pivot by JARM fingerprint (very strong infrastructure marker)
python3 tools/clis/shodan.py search 'ssl.jarm:1234567890abcdef...'

# Vulnerable version exposed
python3 tools/clis/shodan.py search 'vuln:CVE-2024-21887'

Both CLIs accept --dry-run. Both exit code 2 if $SHODAN_API_KEY is unset (when not in dry-run). Report missing key; do not fabricate.

Credit awareness

Shodan plans have query credits (search/count/facets) and scan credits (active scans). Run python3 tools/clis/shodan.py info to check your balance before a search-heavy session. Free tier is severely limited — most CTI use needs the Membership ($49 one-time, 100 query credits/month) or a higher tier.

Response format

source: shodan
indicator: <IP or domain>
resolved_ip: <IP>    # present if input was domain
query_time: <ISO8601>
hostnames: [<list>]
org: <organisation>
isp: <ISP>
country: <country>
os: <detected OS>
open_ports: [<list>]
services:
  - port: <port>
    product: <name>
    version: <version>
    banner: <truncated>
vulnerabilities: [<CVE list>]
last_update: <date>

Rate limits

Free tier: 1 request/sec, query credits limited. Paid tiers have higher limits.

Source reliability (Admiralty default)

Default rating for downstream /score-source: B2 (usually reliable, probably true). Banner grabs are empirical but can be stale — check last_update and downgrade to C3 if >30 days old.

Related skills

• /lookup-censys — alternative infrastructure scanner
• /lookup-virustotal, /lookup-abuseipdb, /lookup-greynoise — reputation context for the same IP
• /ip-investigation, /domain-investigation

See also

• Integration setup: tools/integrations/shodan.md
• Node CLI source: tools/clis/shodan.js
• Python CLI source: tools/clis/shodan.py
• Official Python SDK: https://github.com/achillean/shodan-python
• SDK docs: https://shodan.readthedocs.io/
• Search query syntax: https://help.shodan.io/the-basics/search-query-fundamentals
• Filter reference: https://www.shodan.io/search/filters