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Classroom Contents
Breaking Kerberos' RC4 Cipher and Spoofing Windows PACs
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- 1 Introduction
- 2 What is Kerberos?
- 3 Default supported encryption types
- 4 Known weaknesses
- 5 Computing MD5 collisions
- 6 How to exploit?
- 7 A protocol using the broken CHKSUM
- 8 PAC authorization data
- 9 A small HashClash hack
- 10 Step 2: compute collision
- 11 Step 3: store collision bytes in scriptPath request PAC again
- 12 The problem with MAC-over-MAC
- 13 A successful (but limited) exploit
- 14 The patches
- 15 Black Hat Sound Bytes
