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Add folder anatomy (scripts/agent.py + references/api-reference.md) for 648 cybersecurity skills
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
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mukul975
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MIT License
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Copyright (c) 2025 Anthropic Agent Skills Contributors
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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# API Reference: IoT Security Assessment
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## Tools CLI Reference
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| Tool | Command | Description |
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|------|---------|-------------|
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| nmap | `nmap -sV -sC -p- <target>` | Full port scan with version detection |
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| binwalk | `binwalk -eM <firmware>` | Recursive firmware extraction |
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| tcpdump | `tcpdump -i <iface> host <ip> -w <pcap>` | Packet capture from device |
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| openssl | `openssl s_client -connect <ip>:<port>` | TLS certificate inspection |
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| flashrom | `flashrom -p ch341a_spi -r <output>` | SPI flash memory dump |
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## Firmwalker (Firmware Scanner)
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```bash
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./firmwalker.sh <extracted_fs_root>/
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# Scans for: passwords, keys, URLs, IPs, emails, config files
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```
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## FirmAE / Firmadyne (Firmware Emulation)
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```bash
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python3 fat.py <firmware.bin>
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# Boots extracted Linux firmware in QEMU for dynamic testing
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```
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## Python Libraries
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| Library | Version | Purpose |
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|---------|---------|---------|
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| `subprocess` | stdlib | Execute nmap, binwalk, tcpdump commands |
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| `hashlib` | stdlib | Firmware integrity hashing |
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| `paho-mqtt` | >=1.6 | MQTT protocol testing for unauthenticated access |
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## Common IoT Protocols & Ports
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| Protocol | Port | Security Concern |
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|----------|------|-----------------|
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| MQTT | 1883/8883 | Often unauthenticated, subscribe to # |
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| CoAP | 5683 | UDP-based, usually no authentication |
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| UPnP | 1900 | Service discovery, often exposes admin |
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| RTSP | 554 | Video streams, frequently unauthenticated |
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| Telnet | 23 | Plaintext credentials |
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## References
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- OWASP IoT Top 10: https://owasp.org/www-project-internet-of-things/
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- FCC ID lookup: https://www.fcc.gov/oet/ea/fccid
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- Firmadyne: https://github.com/firmadyne/firmadyne
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- Binwalk: https://github.com/ReFirmLabs/binwalk
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#!/usr/bin/env python3
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"""Agent for performing IoT security assessment.
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Automates IoT device reconnaissance, firmware extraction with binwalk,
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network traffic analysis, and service scanning for security testing.
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"""
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import subprocess
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import json
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import sys
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import re
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import hashlib
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from pathlib import Path
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class IoTSecurityAgent:
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"""Performs automated IoT device security assessments."""
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def __init__(self, target_ip, output_dir):
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self.target_ip = target_ip
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self.output_dir = Path(output_dir)
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self.output_dir.mkdir(parents=True, exist_ok=True)
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def scan_services(self):
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"""Scan target for open services using nmap."""
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result = subprocess.run(
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["nmap", "-sV", "-sC", "-p-", "-oJ", "-", self.target_ip],
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capture_output=True, text=True, timeout=300,
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)
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services = []
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for line in result.stdout.splitlines():
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if "/tcp" in line or "/udp" in line:
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parts = line.split()
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if len(parts) >= 3:
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services.append({
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"port": parts[0],
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"state": parts[1],
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"service": " ".join(parts[2:]),
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})
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return {"target": self.target_ip, "services": services, "raw": result.stdout}
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def check_default_credentials(self):
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"""Test common default credentials against discovered services."""
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default_creds = [
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("admin", "admin"), ("admin", "password"), ("admin", "1234"),
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("root", "root"), ("root", "admin"), ("root", "password"),
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("admin", ""), ("user", "user"), ("guest", "guest"),
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]
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results = []
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for username, password in default_creds:
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result = subprocess.run(
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["curl", "-s", "-o", "/dev/null", "-w", "%{http_code}",
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"-u", f"{username}:{password}",
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f"http://{self.target_ip}/", "--max-time", "5"],
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capture_output=True, text=True,
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)
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status = result.stdout.strip()
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if status in ("200", "301", "302"):
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results.append({
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"username": username,
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"password": password,
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"status": status,
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"vulnerable": True,
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})
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return results
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def analyze_firmware(self, firmware_path):
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"""Analyze firmware image with binwalk."""
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fw_path = Path(firmware_path)
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if not fw_path.exists():
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return {"error": f"Firmware file not found: {firmware_path}"}
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sha256 = hashlib.sha256(fw_path.read_bytes()).hexdigest()
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scan_result = subprocess.run(
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["binwalk", str(fw_path)], capture_output=True, text=True
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)
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extract_dir = self.output_dir / "firmware_extracted"
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subprocess.run(
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["binwalk", "-eM", "-C", str(extract_dir), str(fw_path)],
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capture_output=True, text=True,
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)
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creds_found = []
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for root, dirs, files in (extract_dir).rglob("*") if extract_dir.exists() else []:
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pass
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if extract_dir.exists():
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grep_result = subprocess.run(
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["grep", "-rn", "-i", "password\\|passwd\\|secret",
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str(extract_dir)],
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capture_output=True, text=True,
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)
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for line in grep_result.stdout.splitlines()[:20]:
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creds_found.append(line.strip())
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return {
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"sha256": sha256,
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"size": fw_path.stat().st_size,
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"binwalk_scan": scan_result.stdout,
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"credentials_found": creds_found,
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"extract_dir": str(extract_dir),
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}
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def capture_traffic(self, interface="eth0", duration=30):
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"""Capture network traffic from the IoT device."""
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pcap_path = self.output_dir / "iot_capture.pcap"
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subprocess.run(
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["timeout", str(duration), "tcpdump", "-i", interface,
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f"host {self.target_ip}", "-w", str(pcap_path)],
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capture_output=True, timeout=duration + 10,
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)
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if pcap_path.exists():
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stats = subprocess.run(
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["capinfos", str(pcap_path)], capture_output=True, text=True
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)
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return {"pcap": str(pcap_path), "stats": stats.stdout}
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return {"error": "Capture failed"}
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def check_tls_configuration(self, port=443):
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"""Check TLS configuration on HTTPS services."""
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result = subprocess.run(
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["openssl", "s_client", "-connect", f"{self.target_ip}:{port}",
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"-brief"],
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input="", capture_output=True, text=True, timeout=10,
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)
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tls_info = {
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"raw": result.stdout + result.stderr,
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"self_signed": "self signed" in (result.stdout + result.stderr).lower(),
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}
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for line in (result.stdout + result.stderr).splitlines():
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if "Protocol" in line:
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tls_info["protocol"] = line.strip()
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if "Cipher" in line:
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tls_info["cipher"] = line.strip()
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return tls_info
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def check_upnp_exposure(self):
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"""Check for UPnP service exposure."""
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result = subprocess.run(
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["nmap", "-sU", "-p", "1900", "--script=upnp-info", self.target_ip],
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capture_output=True, text=True, timeout=30,
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)
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return {
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"upnp_detected": "upnp" in result.stdout.lower(),
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"output": result.stdout,
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}
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def check_mqtt(self, port=1883):
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"""Check for unauthenticated MQTT access."""
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try:
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import paho.mqtt.client as mqtt
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connected = False
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topics = []
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def on_connect(client, userdata, flags, rc):
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nonlocal connected
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connected = rc == 0
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if connected:
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client.subscribe("#")
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def on_message(client, userdata, msg):
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topics.append({"topic": msg.topic, "payload_len": len(msg.payload)})
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client = mqtt.Client()
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client.on_connect = on_connect
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client.on_message = on_message
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client.connect(self.target_ip, port, 5)
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client.loop_start()
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import time
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time.sleep(5)
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client.loop_stop()
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client.disconnect()
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return {
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"unauthenticated_access": connected,
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"topics_found": len(topics),
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"sample_topics": topics[:10],
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}
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except Exception as e:
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return {"error": str(e)}
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def generate_report(self, firmware_path=None):
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"""Run full IoT security assessment and generate report."""
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report = {"target": self.target_ip, "findings": []}
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services = self.scan_services()
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report["services"] = services
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creds = self.check_default_credentials()
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if creds:
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report["findings"].append({
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"id": "IOT-001", "severity": "Critical",
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"title": "Default Credentials Accepted",
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"details": creds,
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})
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tls = self.check_tls_configuration()
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if tls.get("self_signed"):
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report["findings"].append({
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"id": "IOT-002", "severity": "Medium",
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"title": "Self-Signed TLS Certificate",
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"details": tls,
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})
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if firmware_path:
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fw = self.analyze_firmware(firmware_path)
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report["firmware_analysis"] = fw
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if fw.get("credentials_found"):
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report["findings"].append({
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"id": "IOT-003", "severity": "Critical",
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"title": "Hardcoded Credentials in Firmware",
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"count": len(fw["credentials_found"]),
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})
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report_path = self.output_dir / "iot_assessment_report.json"
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with open(report_path, "w") as f:
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json.dump(report, f, indent=2)
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print(json.dumps(report, indent=2))
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return report
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def main():
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if len(sys.argv) < 3:
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print("Usage: agent.py <target_ip> <output_dir> [firmware_path]")
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sys.exit(1)
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target_ip = sys.argv[1]
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output_dir = sys.argv[2]
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firmware_path = sys.argv[3] if len(sys.argv) > 3 else None
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agent = IoTSecurityAgent(target_ip, output_dir)
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agent.generate_report(firmware_path)
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if __name__ == "__main__":
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main()
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