---
id: 7677
title: "Legacy Meets Modern: Breaking AD Through NIS & MFA Infrastructure"
source_domain: netspi.com
source_url: "https://www.netspi.com/blog/technical-blog/network-pentesting/legacy-meets-modern-breaking-ad-through-nis-mfa-infrastructure/"
published_at: "2026-06-08T00:00:00Z"
tags: ["pentesting", "active-directory", "mfa", "nis", "mssql", "dcsync", "nifi"]
phying_url: "https://phying.com/item/7677"
lang: en
---

# Legacy Meets Modern: Breaking AD Through NIS & MFA Infrastructure

## Summary

An engagement walkthrough: root access via Apache NiFi, recovered NIS hashes and Duo Auth Proxy secrets, decrypted MFA traffic, then a DA MSSQL relay via xp_cmdshell to domain admin and DCSync.

## Intelligence Metadata

- **Sources:** netspi.com
- **Published:** 2026-06-08T00:00:00Z
- **Original:** https://www.netspi.com/blog/technical-blog/network-pentesting/legacy-meets-modern-breaking-ad-through-nis-mfa-infrastructure/
- **Phying News:** https://phying.com/item/7677