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#whoami• Yong Chuan, Koh (@yongchuank)• Security Consultant, MWR Infosecurity (SG)• Source code review, binary analysis, malware analysis, etc…• Research Interests• Reverse Engineering• Bugs-Finding• ExploitationLabs.mwrinfosecurity.com | © MWR Labs 2
Outline• Introduction• Sandbox Internals• Inter-Process Communication (IPC) Mechanism• Microsoft Office 2016• ConclusionLabs.mwrinfosecurity.com | © MWR Labs 3
Page 1: UNDERSTANDING THE MICROSOFT OFFICE
Page 5 and 6: INTRODUCTION• Sandboxing 101- Wik
Page 7 and 8: MS OFFICE 2013 PROTECTED-VIEW SANDB
Page 9 and 10: OperatingINTERNALS: ARCHITECTUREBro
Page 11 and 12: INTERNALS: ARCHITECTURE• Elevatio
Page 13 and 14: OperatingINTERNALS: ARCHITECTUREBro
Page 15 and 16: INTERNALS: INITIALIZATIONMSO.sub_00
Page 17 and 18: INTERNALS: INITIALIZATIONLowIntegri
Page 19 and 20: INTERNALS: RESTRICTIONSFile Locatio
Page 21 and 22: INTERNALS: RESTRICTIONS• Capabili
Page 25 and 26: IPC: INTERNAL OBJECTSThreadMgr Obje
Page 27 and 28: IPC: MESSAGE FORMATMessage HeaderMe
Page 29 and 30: IPC: MESSAGE 0X001000• No message
Page 31 and 32: IPC: MESSAGE 0X091000Message Body f
Page 33 and 34: IPC: MESSAGE 0X0C1000• Windows Er
Page 35 and 36: WER ServerIPC: MESSAGE 0X0C1000Wind
Page 37 and 38: IPC: MESSAGE 0X0C1000• Issue 2: D
Page 39 and 40: IPC: MESSAGE 0X0C1000• DemoLabs.m
Page 41 and 42: IPC: MESSAGE 0X0F1000• “Microso
Page 45 and 46: MS OFFICE 2016: SANDBOX INTERNALS
Page 47 and 48: MS OFFICE 2016: IPC 0X161000• New
Page 51 and 52: REFERENCES• Yason, Mark Vincent.

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