the admin café

Grab a cup.Let's take Windows apart, and put it back together, safer.

A quiet corner for IT security in Windows environments: how attacks work, and what actually stops them. Slow-brewed by Lukas.

34 articles, 13 Hack The Box write-ups, writing since 2023.

The Daily FeedBuild Your Own 2FA for the Windows Logon, Part 2: Inside LSA
today's roast:
Inside LSA, extra shot
winter special:
hot chocolate, Inside LSA on the side
spring special:
matcha, with Inside LSA
too hot for coffee:
iced, with Inside LSA
pumpkin spice season:
Inside LSA, extra cinnamon
O'zapft is!
Inside LSA und a Brezn
Frohe Weihnachten!
Inside LSA mit Lebkuchen
boo.
Inside LSA, if you dare
Prosit Neujahr!
stir the cup for confetti
the café turns today!
Inside LSA on the house

TODO: patch the DC ✓

SALTfor your hashes

Today's special

printing your order…
BTM-88Order printer · table 2
OnlinePaperReprint
Order #03401.10.2026

Windows

Build Your Own 2FA for the Windows Logon, Part 2: Inside LSA

The credential provider from Part 1 only sees the logon screen. Part 2 goes into LSA to close the paths it can't reach, with an authentication package and an MSV1_0 sub-authentication filter in C++.

1 ×Foreword
1 ×Prerequisites
1 ×What this closes and what not
Brew time32 min · French Press
Subtotal1 article
VAT 0 %knowledge is free
CashierLukas
windows-2fa-inside-lsa
Read it while it's hot →Thank you · come again · servus

The cork board

pinned up by the barista

Project #01

ADTierKit

Builds a complete AD tier model for you: OUs, groups, delegation, logon restrictions, LAPS. One PowerShell script, one JSON file.

tier models without the grind

PowerShell · MITArticleGitHub ↗

Project #02

Doppio

Your own second factor for the Windows logon: a credential provider plus an LSA authentication package, in C++.

a double shot for your logon

me, on Hack The Box ↗

The pastry case

Hack The Box write-ups, 13 baked so far. Only retired boxes make it into the case: day-old, still delicious.

All 13 boxes →

Stammgast

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Hausordnung

House rules

Found a crack in the cup? Tell the barista, not the whole café. Responsible disclosure details live in security.txt.

Read security.txt

Behind the counter

Meet the barista

Lukas. Wannabe ethical hacker, Hack The Box regular, nine stamps on the cert loyalty card.

servus! →

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