~/talk

PPLdump Is Dead. Long Live PPLdump!

Talkat Black Hat Asia 2023 · 2023-05-09..05-12· [security]
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slides:none on file

Demonstrates a new chain that achieves arbitrary code execution inside PPL processes on Windows 11 by combining a cloud filter rehydration callback, loopback SMB symlink, an oplock to freeze dll loads, and system-wide working set eviction to force paged-in bait‑and‑switch pages; the PoC called PPLfault injects position‑independent payload into services.exe as winTCB‑lite and successfully dumps LSASS. A follow‑on chain (GodFault) uses an anti‑user hard error exploit to open physical memory. A kernel driver mitigation (noFault) blocks remote image paging and the researcher reports MSRC delays after September disclosure.

AI-written summary · about

  1. 0:00PPLdump introduction
  2. 2:27Protected processes and PPL
  3. 5:12Attacks on PPL
  4. 11:51PPL code execution research
  5. 20:58PPLfault exploit demo
  6. 23:26Godfault exploit chain
  7. 25:32PPL mitigations response
  8. 27:56Conclusion
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