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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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# Internal Network Penetration Test — API Reference
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## Libraries
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| Library | Install | Purpose |
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|---------|---------|---------|
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| ldap3 | `pip install ldap3` | LDAP queries for AD enumeration |
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| impacket | `pip install impacket` | SMB relay, credential dumping, lateral movement tools |
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| python-nmap | `pip install python-nmap` | Python wrapper for nmap scanning |
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## Key Tools & Commands
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| Tool | Command | Purpose |
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|------|---------|---------|
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| nmap | `nmap -sV -sC --top-ports 1000 <target>` | Service version and script scan |
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| Responder | `responder -I eth0 -A` | LLMNR/NBT-NS poisoning (analyze mode) |
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| CrackMapExec | `cme smb <target> --gen-relay-list` | Find hosts with SMB signing disabled |
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| BloodHound | `bloodhound-python -d domain -u user -p pass` | AD attack path mapping |
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| ntlmrelayx | `ntlmrelayx.py -t <target> -smb2support` | NTLM relay attack |
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## Common Internal Vulnerabilities
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| Vulnerability | Impact | CVSS |
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|--------------|--------|------|
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| SMB signing disabled | NTLM relay attacks | 7.5 |
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| LLMNR/NBT-NS enabled | Credential capture | 7.0 |
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| Default credentials | Unauthorized access | 9.0 |
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| Unpatched EternalBlue (MS17-010) | Remote code execution | 9.8 |
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| Kerberoasting-eligible SPNs | Offline password cracking | 7.5 |
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## Windows Event IDs for Detection
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| Event ID | Description |
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|----------|-------------|
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| 4625 | Failed logon attempt (brute force indicator) |
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| 4648 | Logon with explicit credentials |
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| 4768 | Kerberos TGT request |
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| 4769 | Kerberos service ticket request |
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## External References
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- [nmap Reference Guide](https://nmap.org/book/man.html)
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- [ldap3 Documentation](https://ldap3.readthedocs.io/)
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- [impacket Examples](https://github.com/fortra/impacket/tree/master/examples)
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- [PTES Technical Guidelines](http://www.pentest-standard.org/index.php/PTES_Technical_Guidelines)
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#!/usr/bin/env python3
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"""Internal network penetration testing agent using nmap and impacket."""
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import json
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import sys
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import argparse
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import subprocess
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import socket
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from datetime import datetime
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def run_nmap_scan(target, scan_type="quick"):
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"""Run nmap network discovery and port scanning."""
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scan_args = {
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"quick": ["-sV", "-sC", "--top-ports", "100", "-T4"],
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"full": ["-sV", "-sC", "-p-", "-T3"],
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"stealth": ["-sS", "-Pn", "-T2", "--top-ports", "1000"],
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}
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args = scan_args.get(scan_type, scan_args["quick"])
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cmd = ["nmap"] + args + ["-oX", "-", target]
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try:
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result = subprocess.run(cmd, capture_output=True, text=True, timeout=600)
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return {"status": "completed", "output": result.stdout[:2000]}
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except FileNotFoundError:
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return {"status": "error", "message": "nmap not installed"}
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except subprocess.TimeoutExpired:
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return {"status": "timeout"}
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def check_smb_signing(target):
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"""Check if SMB signing is required on target hosts."""
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cmd = ["nmap", "--script", "smb2-security-mode", "-p", "445", target]
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try:
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result = subprocess.run(cmd, capture_output=True, text=True, timeout=60)
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signing_disabled = "not required" in result.stdout.lower()
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return {
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"target": target,
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"smb_signing_required": not signing_disabled,
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"vulnerable_to_relay": signing_disabled,
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"severity": "HIGH" if signing_disabled else "INFO",
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}
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except (FileNotFoundError, subprocess.TimeoutExpired):
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return {"target": target, "error": "nmap scan failed"}
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def check_llmnr_nbns(interface="eth0"):
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"""Check for LLMNR/NBT-NS poisoning opportunities."""
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return {
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"check": "LLMNR/NBT-NS",
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"tool": "Responder",
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"command": f"responder -I {interface} -A",
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"risk": "Cleartext credential capture via name resolution poisoning",
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"severity": "HIGH",
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"mitigation": "Disable LLMNR via GPO, disable NBT-NS in network adapter settings",
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}
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def enumerate_ad_info(dc_ip, domain, username, password):
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"""Enumerate Active Directory information via LDAP."""
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try:
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import ldap3
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server = ldap3.Server(dc_ip, get_info=ldap3.ALL)
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conn = ldap3.Connection(server, user=f"{domain}\\{username}",
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password=password, authentication=ldap3.NTLM, auto_bind=True)
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base_dn = ",".join([f"DC={p}" for p in domain.split(".")])
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conn.search(base_dn, "(objectClass=computer)", attributes=["cn", "operatingSystem"])
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computers = [{"name": str(e.cn), "os": str(e.operatingSystem)} for e in conn.entries]
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conn.search(base_dn, "(&(objectClass=user)(adminCount=1))",
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attributes=["sAMAccountName"])
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admins = [str(e.sAMAccountName) for e in conn.entries]
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conn.unbind()
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return {"computers": computers[:20], "admin_accounts": admins, "total_hosts": len(computers)}
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except Exception as e:
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return {"error": str(e)}
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def check_common_vulns(target):
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"""Check for common internal network vulnerabilities."""
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checks = []
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for port, service in [(21, "FTP"), (23, "Telnet"), (80, "HTTP"), (3389, "RDP"),
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(5900, "VNC"), (1433, "MSSQL"), (3306, "MySQL")]:
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sock.settimeout(2)
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try:
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sock.connect((target, port))
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checks.append({"port": port, "service": service, "status": "open"})
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except (socket.timeout, ConnectionRefusedError, OSError):
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pass
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finally:
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sock.close()
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return checks
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def run_pentest(target, dc_ip=None, domain=None, username=None, password=None):
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"""Execute internal network penetration test."""
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print(f"\n{'='*60}")
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print(f" INTERNAL NETWORK PENETRATION TEST")
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print(f" Target: {target}")
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print(f" Generated: {datetime.utcnow().isoformat()} UTC")
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print(f"{'='*60}\n")
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ports = check_common_vulns(target)
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print(f"--- OPEN PORTS ({len(ports)}) ---")
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for p in ports:
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print(f" Port {p['port']}/{p['service']}: {p['status']}")
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smb = check_smb_signing(target)
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print(f"\n--- SMB SIGNING ---")
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print(f" Signing required: {smb.get('smb_signing_required', 'N/A')}")
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print(f" Relay vulnerable: {smb.get('vulnerable_to_relay', 'N/A')}")
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llmnr = check_llmnr_nbns()
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print(f"\n--- LLMNR/NBT-NS ---")
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print(f" Risk: {llmnr['risk']}")
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print(f" Severity: {llmnr['severity']}")
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ad_info = {}
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if dc_ip and domain and username and password:
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ad_info = enumerate_ad_info(dc_ip, domain, username, password)
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print(f"\n--- AD ENUMERATION ---")
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print(f" Total hosts: {ad_info.get('total_hosts', 0)}")
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print(f" Admin accounts: {ad_info.get('admin_accounts', [])}")
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return {"ports": ports, "smb": smb, "llmnr": llmnr, "ad": ad_info}
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def main():
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parser = argparse.ArgumentParser(description="Internal Network Pentest Agent")
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parser.add_argument("--target", required=True, help="Target IP or CIDR range")
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parser.add_argument("--dc-ip", help="Domain controller IP for AD enumeration")
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parser.add_argument("--domain", help="AD domain name")
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parser.add_argument("--username", help="AD username")
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parser.add_argument("--password", help="AD password")
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parser.add_argument("--output", help="Save report to JSON file")
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args = parser.parse_args()
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report = run_pentest(args.target, args.dc_ip, args.domain, args.username, args.password)
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if args.output:
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with open(args.output, "w") as f:
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json.dump(report, f, indent=2, default=str)
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print(f"\n[+] Report saved to {args.output}")
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if __name__ == "__main__":
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main()
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