Getting Credentials from a locked Windows PC in 12 Seconds Joe Granneman, MBA, CISSP – Principal Consultant
About illumination.io ● Rockford based Cybersecurity Services – Penetration Testing – HIPAA, PCI, and GLBA Compliance Testing – Social Engineering Testing – Incident Response – Disaster Recovery Planning – Security Architecture Design – Strategic Information Security Planning – Information Security Program Development
About the Speaker
Your Mission
Your Tools
You Only Need 12 Seconds
So how does this work?
Windows Authentication is a Mess of Old Technology NTLMv1 NTLMv2
What is a LAN Turtle?
The Secret Sauce
LAN Turtle in Action
What did we get? ● Proxy-Auth-NTLMv2-172.16.84.113.txt ● Bob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
Encryption Methods Matter ● NetNTLMv1 : 27362.0 MH/s ● NetNTLMv2 : 2115.9 MH/s ● NTLM : 64790.0 MH/s ● LANMAN : Instant
GPU Cracking Engaged
How to Defend?
How to Defend? Disable NETBIOS over TCP/IP in DHCP Manager
How to Defend? Disable NetBIOS over TCP/IP in NIC Settings
Don’t Forget the Basics ● Strong passwords still work – 12 characters is the new minimum ● Utilize dual factor auth where possible ● Physical security is still king
Getting Credentials from a locked Windows PC in 12 Seconds Joe Granneman, MBA, CISSP – Principal Consultant
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