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Nuclei Scanner

Nuclei Scanner Template Vulnerability CVE Misconfigurations Bug Bounty CI/CD Enterprise Security ProjectDiscovery YAML Go Protocol

Feature	Description	Template Count	Use Case
CVE Detection	Known vulnerabilities	3000+	Patch management
Misconfigurations	Server/app misconfig	1000+	Hardening
Exposed Panels	Admin panels, dashboards	500+	Attack surface
Default Logins	Default credentials	300+	Access control
Takeovers	DNS/subdomain takeover	100+	Domain security
Technologies	Tech stack detection	500+	Reconnaissance

Installation and Usage

# === Nuclei Setup and Scanning ===

# Install
# go install -v github.com/projectdiscovery/nuclei/v3/cmd/nuclei@latest
# or
# docker pull projectdiscovery/nuclei:latest

# Update templates
# nuclei -update-templates

# Basic scan
# nuclei -u https://target.com

# Scan with specific severity
# nuclei -u https://target.com -severity critical, high

# Scan with specific templates
# nuclei -u https://target.com -t cves/ -t misconfigurations/

# Scan multiple targets
# nuclei -l targets.txt -severity critical, high -o results.txt

# JSON output for automation
# nuclei -u https://target.com -json -o results.json

# Rate limiting
# nuclei -u https://target.com -rate-limit 100 -bulk-size 25 -concurrency 10

# Scan with custom headers
# nuclei -u https://target.com -H "Authorization: Bearer TOKEN"

# Exclude certain templates
# nuclei -u https://target.com -exclude-tags dos, fuzz

from dataclasses import dataclass

@dataclass
class ScanProfile:
    profile: str
    templates: str
    severity: str
    rate_limit: int
    duration: str
    use_case: str

profiles = [
    ScanProfile("Quick Scan", "-t exposed-panels/ -t technologies/",
        "info, low", 150, "1-5 min", "Every PR / deploy"),
    ScanProfile("Standard Scan", "-t cves/ -t misconfigurations/",
        "medium, high, critical", 100, "10-30 min", "Weekly"),
    ScanProfile("Full Scan", "All templates",
        "all", 50, "1-4 hours", "Monthly / quarterly"),
    ScanProfile("Bug Bounty", "-t cves/ -t takeovers/ -t exposures/",
        "high, critical", 100, "30-60 min", "Per program"),
    ScanProfile("Compliance", "-t misconfigurations/ -t ssl/",
        "medium, high", 100, "15-30 min", "Compliance audit"),
]

print("=== Scan Profiles ===")
for p in profiles:
    print(f"  [{p.profile}] Templates: {p.templates}")
    print(f"    Severity: {p.severity} | Rate: {p.rate_limit}/s")
    print(f"    Duration: {p.duration} | Use: {p.use_case}")

Custom Template

# === Custom Nuclei Template ===

# my-custom-check.yaml
# id: my-admin-panel-check
# info:
#   name: Admin Panel Detection
#   author: myteam
#   severity: medium
#   description: Detects exposed admin panels
#   tags: admin, panel, exposure
#
# http:
#   - method: GET
#     path:
#       - "{{BaseURL}}/admin"
#       - "{{BaseURL}}/admin/login"
#       - "{{BaseURL}}/wp-admin"
#       - "{{BaseURL}}/administrator"
#       - "{{BaseURL}}/panel"
#
#     matchers-condition: and
#     matchers:
#       - type: status
#         status:
#           - 200
#       - type: word
#         words:
#           - "login"
#           - "password"
#           - "admin"
#         condition: or
#
#     extractors:
#       - type: regex
#         regex:
#           - ''
#         group: 1

# Advanced: Multi-step with variables
# id: api-key-leak
# info:
#   name: API Key Leak Detection
#   author: myteam
#   severity: high
#
# http:
#   - method: GET
#     path:
#       - "{{BaseURL}}/.env"
#       - "{{BaseURL}}/config.json"
#       - "{{BaseURL}}/.git/config"
#
#     matchers:
#       - type: regex
#         regex:
#           - "(?i)(api[_-]?key|api[_-]?secret|access[_-]?token)\\s*[=:]\\s*['\"]?([a-zA-Z0-9_-]{20,})"
#
#     extractors:
#       - type: regex
#         name: leaked_key
#         regex:
#           - "(?i)(api[_-]?key|api[_-]?secret)\\s*[=:]\\s*['\"]?([a-zA-Z0-9_-]{20,})"
#         group: 2

# Validate template
# nuclei -validate -t my-custom-check.yaml
# nuclei -t my-custom-check.yaml -u https://target.com -debug

@dataclass
class TemplateExample:
    name: str
    severity: str
    type: str
    matcher: str
    finding: str

examples = [
    TemplateExample("CVE-2024-XXXX", "critical", "HTTP",
        "Status 200 + specific response body",
        "Known vulnerability with exploit"),
    TemplateExample("Exposed .env file", "high", "HTTP",
        "Status 200 + regex for API keys",
        "Sensitive credentials exposed"),
    TemplateExample("Open redirect", "medium", "HTTP",
        "Status 302 + Location header match",
        "URL redirect manipulation"),
    TemplateExample("Missing security headers", "info", "HTTP",
        "Negative match for headers",
        "X-Frame-Options, CSP missing"),
    TemplateExample("SSL certificate expiry", "low", "SSL",
        "Certificate expiry < 30 days",
        "SSL cert about to expire"),
]

print("\nTemplate Examples:")
for e in examples:
    print(f"  [{e.severity.upper()}] {e.name}")
    print(f"    Type: {e.type} | Matcher: {e.matcher}")
    print(f"    Finding: {e.finding}")

CI/CD and Enterprise

# === CI/CD Integration ===

# GitHub Actions
# name: Nuclei Security Scan
# on:
#   push:
#     branches: [main]
#   schedule:
#     - cron: '0 2 * * *'
#
# jobs:
#   scan:
#     runs-on: ubuntu-latest
#     steps:
#       - uses: actions/checkout@v4
#       - uses: projectdiscovery/nuclei-action@main
#         with:
#           target: https://myapp.com
#           flags: "-severity critical, high -json"
#           output: nuclei-results.json
#       - name: Parse results
#         run: |
#           CRITICAL=$(jq '[.[] | select(.info.severity=="critical")] | length' nuclei-results.json)
#           if [ "$CRITICAL" -gt 0 ]; then
#             echo "CRITICAL vulnerabilities found!"
#             exit 1
#           fi
#       - uses: github/codeql-action/upload-sarif@v3
#         with:
#           sarif_file: nuclei-results.sarif

@dataclass
class EnterpriseFeature:
    feature: str
    description: str
    benefit: str
    tool: str

features = [
    EnterpriseFeature("Asset Discovery", "Discover all subdomains and services",
        "Complete attack surface visibility",
        "subfinder + httpx + nuclei pipeline"),
    EnterpriseFeature("Scheduled Scanning", "Automated recurring scans",
        "Continuous security monitoring",
        "Cron + nuclei + reporting"),
    EnterpriseFeature("Custom Templates", "Organization-specific checks",
        "Tailored security testing",
        "Private template repository"),
    EnterpriseFeature("Integration", "Send findings to tracking systems",
        "Streamlined remediation workflow",
        "DefectDojo, Jira, Slack webhooks"),
    EnterpriseFeature("Compliance", "Map findings to compliance frameworks",
        "Audit readiness",
        "OWASP Top 10, CIS, PCI DSS tags"),
    EnterpriseFeature("Reporting", "Executive and technical reports",
        "Stakeholder communication",
        "JSON, SARIF, Markdown, HTML"),
]

print("Enterprise Features:")
for f in features:
    print(f"  [{f.feature}] {f.description}")
    print(f"    Benefit: {f.benefit}")
    print(f"    Tool: {f.tool}")

เคล็ดลับ

Update: อัพเดท Templates ทุกสัปดาห์ มี CVE ใหม่ตลอด
Rate Limit: ตั้ง Rate Limit เหมาะสม ไม่ทำให้ Target ล่ม
Custom: เขียน Custom Template สำหรับ App เฉพาะขององค์กร
Pipeline: subfinder → httpx → nuclei เป็น Pipeline มาตรฐาน
Legal: Scan เฉพาะ Target ที่ได้รับอนุญาตเท่านั้น

Nuclei Scanner คืออะไร

Open Source Vulnerability Scanner ProjectDiscovery Template YAML CVE Misconfigurations Panels Default Logins DNS Takeover Go 6000 Templates