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Author SHA1 Message Date
Joseph Doherty 808fea18a0 [F46] analysis/frida: Suspend/Activate hooks + R5 next-step 
Closes the wire-side gap left by capture 077 in F44's R5 walk. The Frida
script now hooks the production LmxProxy.dll dispatchers so a future live
re-run on the AVEVA host can answer "does CLMXProxyServer issue a separate
ORPC method for Suspend/Activate, or are they synthesised client-side?"

Hooks added in `analysis/frida/mx-nmx-trace.js`:
- `LmxProxy.dll!CLMXProxyServer.Suspend`  @ RVA 0x13d9c (FUN_10013d9c)
- `LmxProxy.dll!CLMXProxyServer.Activate` @ RVA 0x14028 (FUN_10014028)

Both RVAs were extracted from
`analysis/ghidra/exports/LmxProxy.dll.string-refs.tsv` rows 119/122 (the
`CLMXProxyServer::Suspend - Server Handle` / `Activate - Server Handle`
log strings each xref one function — same pattern as the existing
AdviseSupervisory hook at 0x142b4). The hooks emit `mx.suspend.begin/end`
and `mx.activate.begin/end` events with serverHandle, itemHandle, and the
`MxStatus*` out parameter decoded as 4 x int16 (Success / Category /
DetectedBy / Detail per `src/MxNativeCodec/MxStatus.cs`). Naming matches
the F46 spec's `mx.<verb>.begin / end` grep convention rather than the
generic `call.enter / leave` shape because we want to filter these out
of large traces without false positives from other LmxProxy entrypoints.

No `Resume` / `Reactivate` exports exist in `LmxProxy.dll` — verified
against `analysis/ghidra/exports/LmxProxy.dll.ghidra.md` (no such string
xrefs) and the decompiled `ILMXProxyServer5` / `ILMXProxyServer4`
interfaces under `analysis/decompiled-mxaccess/ArchestrA/MxAccess/`
(only Suspend and Activate are declared on the dispatch interface).

The script's top-of-file comment now carries the live re-run procedure
(rebuild MxTraceHarness x86, attach Frida with `--scenario=suspend-advised`
then `--scenario=activate-advised`, save under
`captures/NNN-frida-suspend-activate-instrumented/`, grep the new TSV for
`mx.suspend.*` / `mx.activate.*` and correlate with `nmx.enter` events
in the same time window). Live capture is intentionally deferred to the
maintainer per the F46 spec — this dev box has no AVEVA install.

`design/70-risks-and-open-questions.md` R5 status updated:
- Title flag `(filed as F45)` -> `(filed as F46, hook landed pending live re-run)`
  (the docs/M6-buffered-evidence.md footnote referenced F45 from before
  F45 / F46 were de-conflicted by commit 2120dfa).
- New "Next step - F46" paragraph documents the two hooked RVAs, the
  out-param decode shape, and the verified absence of Resume / Reactivate
  symbols.
- "Current best answer" paragraph re-points the residual ORPC question
  at F46.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-05-06 05:42:57 -04:00
Joseph Doherty fe2a6db786 Initial project state: .NET reference, design, Rust port (M0+M1), evidence
rust / build / test / clippy / fmt (push) Has been cancelled
Details 
Layout:
- src/                    .NET 10 x64 reference: MxNativeCodec, MxNativeClient,
                          MxAsbClient, probes, tests, harnesses. Executable spec.
- design/                 Architectural plan for the Rust port (M0–M6), error
                          model, protocol invariants, risks (R1–R16), adversarial
                          review log (review.md).
- rust/                   Rust workspace. M0 skeleton + M1 codec parity.
                          mxaccess-codec: 215 unit tests + 2 cross-implementation
                          parity tests (byte-identical against .NET reference).
                          Other crates are M0 stubs awaiting M2+.
- captures/               Frida + netsh + pcap evidence per CLAUDE.md
                          ("captures are evidence, not throwaway logs").
- analysis/               Decompiled C# (frida/proxy/decompiled-*),
                          Ghidra exports for native DLLs (`exports/` only —
                          working state at `projects/` and AVEVA's input
                          binaries at `input/` are gitignored).
- docs/                   Reverse-engineering reference docs.
- tools/                  Setup-LiveProbeEnv.ps1 (Infisical credential fetcher),
                          Compute-Crc.ps1 (.NET parity helper).
- .github/workflows/      Rust CI: fmt + build + test + clippy on Windows.
- LICENSE                 MIT (Joseph Doherty, 2026).

Verified:
- cargo test --workspace → 217 passed (215 unit + 2 .NET parity), 0 failed
- cargo clippy --workspace -- -D warnings → clean
- cargo fmt --all -- --check → clean
- cargo publish --dry-run -p mxaccess-codec → packages cleanly

Excluded from history (see .gitignore):
- **/bin, **/obj, **/target — build artifacts
- analysis/ghidra/projects/ — Ghidra working state (regenerable)
- analysis/ghidra/input/ — AVEVA proprietary DLLs (vendor IP)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 2026-05-05 06:21:00 -04:00