GetNPUsers (Impacket)

Cross-platform resources for GetNPUsers (Impacket): curated HTB machines, PortSwigger labs and TryHackMe rooms with validated writeups and related skills.

This page aggregates cross-platform resources to practice GetNPUsers (Impacket): retired Hack The Box machines, PortSwigger Web Security Academy labs and TryHackMe rooms, plus curated resources (HackTricks, PortSwigger, etc.) and related skills.

Coverage: 4 challenges across 1 platform — 4 HackTheBox. 4 with a Spanish writeup, 4 with a video writeup.

Where to start

Ordered by actual difficulty. At the same level: isolated lab first, then the guided room, and the full machine last.

1. HackTheBox — Sauna (Fácil) · 🇪🇸 🇬🇧 📹
2. HackTheBox — Cascade (Medio) · 🇪🇸 🇬🇧 📹
3. HackTheBox — Scrambled (Medio) · 🇪🇸 🇬🇧 📹
4. HackTheBox — Blackfield (Difícil) · 🇪🇸 🇬🇧 📹

Curated resources

Source	Link
HackTricks	https://book.hacktricks.wiki/en/windows-hardening/active-directory-methodology/asreproast.html

HTB machines practicing GetNPUsers (Impacket) (4)

Machine	OS	Difficulty	Writeup
Blackfield	Windows	HARD	🇪🇸 🇬🇧 📹
Cascade	Windows	MEDIUM	🇪🇸 🇬🇧 📹
Sauna	Windows	EASY	🇪🇸 🇬🇧 📹
Scrambled	Windows	MEDIUM	🇪🇸 🇬🇧 📹

Related skills

• /en/skills/asreproast
• /en/skills/active-directory

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Last updated: 2026-08-13