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Month: April 2018

Remote Hash Extraction On Demand Via Host Security Descriptor Modification

This is the long overdue follow-up to the “An ACE in the Hole: Stealthy Host Persistence via Security Descriptors” presentation (slides and video) that @tifkin_, @enigma0x3, and I gave at DerbyCon last year. This past weekend we gave a talk at @Sp4rkCon titled “The Unintended Risks of Trusting Active Directory” that explored combining our host-based security descriptor research with the work that @_wald0 and I detailed at Black Hat and DEF CON last year on Active Directory security descriptor backdooring. One of the more interesting case studies at both DerbyCon and Sp4rkCon involved a host-based security descriptor modification primitive that…