Adding nmap skill

nmap/SKILL.md

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+# Nmap Recon
+
+Network reconnaissance and port scanning using Nmap. Use when asked to scan a target, find open ports, detect services, check for vulnerabilities, or perform network reconnaissance.
+
+## Triggers
+
+- "scan [target]", "port scan", "nmap", "what ports are open", "recon [target]", "service detection", "vulnerability scan"
+
+## Requirements
+
+- `nmap` must be installed (standard on Kali, available via package managers)
+- Root/sudo for SYN scans and OS detection
+
+## Usage
+
+### Quick Scan (Top 1000 ports)
+```bash
+nmap -sC -sV -oA scan_$(date +%Y%m%d_%H%M%S) TARGET
+```
+
+### Full Port Scan
+```bash
+nmap -p- -sC -sV -oA fullscan_$(date +%Y%m%d_%H%M%S) TARGET
+```
+
+### Fast Scan (Quick check)
+```bash
+nmap -F -T4 TARGET
+```
+
+### Stealth SYN Scan (requires root)
+```bash
+sudo nmap -sS -sV -O -oA stealth_$(date +%Y%m%d_%H%M%S) TARGET
+```
+
+### UDP Scan (Top 100 ports)
+```bash
+sudo nmap -sU --top-ports 100 -oA udp_$(date +%Y%m%d_%H%M%S) TARGET
+```
+
+### Vulnerability Scan
+```bash
+nmap --script vuln -oA vulnscan_$(date +%Y%m%d_%H%M%S) TARGET
+```
+
+### Aggressive Scan (OS, version, scripts, traceroute)
+```bash
+nmap -A -T4 -oA aggressive_$(date +%Y%m%d_%H%M%S) TARGET
+```
+
+## Output Parsing
+
+Nmap outputs in multiple formats with `-oA`:
+- `.nmap` - Human readable
+- `.xml` - Machine parseable
+- `.gnmap` - Greppable format
+
+### Parse open ports from greppable output:
+```bash
+grep "open" scan.gnmap | awk -F'[/]' '{print $1}' | tr ',' '\n' | sort -u
+```
+
+### Extract service versions:
+```bash
+grep -E "^[0-9]+/" scan.nmap | awk '{print $1, $3, $4}'
+```
+
+### Quick summary from XML:
+```bash
+xmllint --xpath "//port[@state='open']" scan.xml 2>/dev/null
+```
+
+## Common Scan Profiles
+
+| Profile | Command | Use Case |
+|---------|---------|----------|
+| Quick | `nmap -F -T4` | Fast initial recon |
+| Standard | `nmap -sC -sV` | Service detection + default scripts |
+| Full | `nmap -p- -sC -sV` | All 65535 ports |
+| Stealth | `sudo nmap -sS -T2` | Evasive scanning |
+| Vuln | `nmap --script vuln` | Vulnerability detection |
+| Aggressive | `nmap -A -T4` | Full enumeration |
+
+## Script Categories
+
+```bash
+# List available scripts
+ls /usr/share/nmap/scripts/
+
+# Run specific category
+nmap --script=default,safe TARGET
+nmap --script=vuln TARGET
+nmap --script=exploit TARGET
+nmap --script=auth TARGET
+
+# Run specific script
+nmap --script=http-title TARGET
+nmap --script=smb-vuln* TARGET
+```
+
+## Target Specification
+
+```bash
+# Single host
+nmap 192.168.1.1
+
+# CIDR range
+nmap 192.168.1.0/24
+
+# Range
+nmap 192.168.1.1-254
+
+# From file
+nmap -iL targets.txt
+
+# Exclude hosts
+nmap 192.168.1.0/24 --exclude 192.168.1.1
+```
+
+## Timing Templates
+
+- `-T0` Paranoid (IDS evasion)
+- `-T1` Sneaky (IDS evasion)
+- `-T2` Polite (slow)
+- `-T3` Normal (default)
+- `-T4` Aggressive (fast)
+- `-T5` Insane (very fast, may miss ports)
+
+## Authorization Required
+
+⚠️ **Only scan targets you own or have explicit written authorization to test.**
+
+Never scan:
+- Public infrastructure without permission
+- Networks you don't control
+- Production systems without approval
+
+## Example Workflow
+
+```bash
+# 1. Quick scan to find live hosts
+nmap -sn 192.168.1.0/24 -oA live_hosts
+
+# 2. Fast port scan on discovered hosts
+nmap -F -T4 -iL live_hosts.gnmap -oA quick_ports
+
+# 3. Deep scan interesting hosts
+nmap -p- -sC -sV -oA deep_scan TARGET
+
+# 4. Vulnerability scan
+nmap --script vuln -oA vuln_scan TARGET
+```