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EDR: The Great Escape - RomHack Training Review

A DFIR consultant's detailed review of "EDR: The Great Escape," a RomHack training by RETooling's Silvio and Antonio, covering modern EDR/AV internals and evasion across four modules: minifilter driver whitelist/altitude bugs, hooking/unhooking (including VEH syscall triggering), ELAM and PPL, ETW muting via EtwUnregister, ROP-only process injection, kernel notify-routine/object-callback bypass (as implemented in EDRSandBlast), vulnerable driver exploitation for token theft, stack-spoofing techniques (Ekko, gargoyle, SilentMoonwalk, CallStackMasker, DeathSleep), local privilege escalation, memory-scanner evasion (vs moneta, pe-sieve), and .NET IL/JIT-hooking obfuscation (R2R stomping, MassLogger-style tricks). The course used the open-source openedr project as a reference architecture for labs. Written for both red and blue teams, it doubles as a map of concrete EDR blind spots and the tooling attackers use to exploit them.

TL;DR Deep-dive review of an advanced RETooling training on EDR internals and evasion — minifilters, unhooking, ETW, ROP injection, BYOVD, stack spoofing, and .NET obfuscation.

Organisations named here

  • Flare-On Challenge 8
  • James Forshaw
  • R2R stomping
  • RETooling

Technologies named here

  • openedr
  • Windows Defender
  • LUAFV
  • EDRSandblast
  • Windows Kernel Drivers
  • DeathSleep
  • .NET
  • Ekko
  • gargoyle
  • SilentMoonwalk
  • CallStackMasker
  • DripLoader
  • moneta
  • pe-sieve
  • WinDbg / Windows Kernel Debugger
  • Sysmon
  • wtrace
  • fltmc
  • Windows
  • EDR

Techniques named here

  • BYOVD

Threat actors named here

  • MassLogger