aeondave/amass
offensive-tools/recon/amass/SKILL.md
OWASP attack surface mapping tool for subdomain enumeration, DNS brute-force, and asset discovery using passive and active techniques. Use when asked for deep subdomain reconnaissance, attack surface mapping, DNS enumeration, or when subfinder alone is insufficient.
$ install --global
skillsauthnpx skillsauth add aeondave/malskill amassInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Mar 31, 2026, 9:23 PM58.4s1 file scanned
SKILL.md
- name:
- amass
- description:
- OWASP attack surface mapping tool for subdomain enumeration, DNS brute-force, and asset discovery using passive and active techniques. Use when asked for deep subdomain reconnaissance, attack surface mapping, DNS enumeration, or when subfinder alone is insufficient.
- license:
- Apache-2.0
- compatibility:
- Linux, Windows, macOS. Install: go install -v github.com/owasp-amass/amass/v4/...@master or download binary from GitHub releases.
- author:
- AeonDave
- version:
- 1.0
Amass
OWASP Attack Surface Mapper — combines passive OSINT with active DNS enumeration.
Quick Start
# Passive enumeration
amass enum -passive -d example.com
# Active enumeration (DNS brute-force + passive)
amass enum -active -d example.com
# Save results to output directory
amass enum -d example.com -o subs.txt -dir amass_out/
Sub-commands
| Command | Description |
|---------|-------------|
| enum | Subdomain enumeration (main workflow) |
| intel | Gather org/ASN/CIDR intelligence |
| viz | Generate graph visualizations |
| track | Track changes over time |
| db | Manage the Amass graph database |
Enum Flags
| Flag | Description |
|------|-------------|
| -d <domain> | Target domain |
| -dL <file> | Domain list file |
| -passive | Passive only (no DNS probing) |
| -active | Active mode (DNS + cert grabbing) |
| -brute | DNS brute-force with wordlist |
| -w <wordlist> | Custom wordlist for brute-force |
| -r <resolvers> | Custom DNS resolvers file |
| -o <file> | Output file |
| -dir <path> | Output directory for all files |
| -config <file> | Config file (API keys, settings) |
| -timeout <mins> | Enum timeout in minutes |
Config File (API Keys)
Create ~/.config/amass/config.yaml:
scope:
domains:
- example.com
data_sources:
Shodan:
- apikey: YOUR_KEY
VirusTotal:
- apikey: YOUR_KEY
Censys:
- apikey: YOUR_ID
secret: YOUR_SECRET
Common Workflows
# Passive recon only
amass enum -passive -d example.com -o passive_subs.txt
# Full active enum with brute-force
amass enum -active -brute -w /usr/share/wordlists/subdomains.txt -d example.com
# Org intelligence (find related ASNs/CIDRs)
amass intel -org "Target Corp" -max-dns-queries 2500
# Multiple domains
amass enum -passive -dL domains.txt -o all_subs.txt
# Visualization after enum
amass viz -d3 -dir amass_out/ -d example.com
Resources
| File | When to load |
|------|--------------|
| references/enum-modes.md | Deep-dive on intel/enum/viz modes, config file syntax, resolver setup |
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