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Disassembly and binary analysis pipeline

Module

BinaryIndex

Status

VERIFIED

Description

Pluggable disassembly framework with Ghidra integration (BSim + version tracking) for binary analysis capabilities.

Implementation Details

  • Modules: src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly/, src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly.Abstractions/, src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly.B2R2/, src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly.Iced/, src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Ghidra/, src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Decompiler/
  • Key Classes:
    • DisassemblyService (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly/DisassemblyService.cs) - core disassembly orchestrator
    • HybridDisassemblyService (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly/HybridDisassemblyService.cs) - multi-backend hybrid disassembly with quality-based plugin selection
    • DisassemblyPluginRegistry (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly/DisassemblyPluginRegistry.cs) - manages registered disassembly plugins
    • BinaryFormatDetector (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly/BinaryFormatDetector.cs) - detects ELF/PE/Mach-O format from binary headers
    • B2R2DisassemblyPlugin (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly.B2R2/B2R2DisassemblyPlugin.cs) - B2R2 backend with architecture mapping, instruction mapping, operand parsing
    • B2R2LowUirLiftingService (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly.B2R2/B2R2LowUirLiftingService.cs) - lifts machine code to LowUIR intermediate representation with SSA transformation
    • B2R2LifterPool (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly.B2R2/B2R2LifterPool.cs) - object pool for B2R2 lifter instances with warm preloading
    • IcedDisassemblyPlugin (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Disassembly.Iced/IcedDisassemblyPlugin.cs) - Iced x86/x64 disassembler plugin
    • GhidraDisassemblyPlugin (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Ghidra/Services/GhidraDisassemblyPlugin.cs) - Ghidra integration
    • GhidraDecompilerAdapter (src/BinaryIndex/__Libraries/StellaOps.BinaryIndex.Decompiler/GhidraDecompilerAdapter.cs) - Ghidra decompilation with AST comparison
  • Abstractions: IDisassemblyPlugin, IDisassemblyPluginRegistry, IDisassemblyService with models for BinaryFormat, CpuArchitecture, DisassembledInstruction, InstructionKind, etc.
  • Decompiler: Full AST comparison engine with recursive parser, code normalizer, semantic equivalence checking

E2E Test Plan

  • Load an x86-64 ELF binary via HybridDisassemblyService and verify disassembly produces valid instructions
  • Verify BinaryFormatDetector correctly identifies ELF, PE, and Mach-O formats
  • Verify B2R2 plugin handles architecture mapping for x86, x64, ARM, AArch64
  • Verify B2R2 LowUIR lifting produces valid IR with SSA form
  • Verify Iced plugin disassembles x86/x64 instructions correctly
  • Verify B2R2LifterPool warm preloading and pool size management
  • Verify Ghidra decompiler adapter produces comparable ASTs via AstComparisonEngine
  • Verify hybrid disassembly quality scoring selects the best plugin for each binary

Verification

  • Tier 0/1/2 artifacts: docs/qa/feature-checks/runs/binaryindex/disassembly-and-binary-analysis-pipeline/run-001/.
  • Result: verified.
  • Evidence summary:
    • tier1-test-disassembly.log: Passed 45/45.
    • tier1-test-ghidra-retest.log: Passed 122/122.
    • tier1-test-decompiler-retest.log: Passed 35/35.
    • tier2-test-disassembly.log: Passed 45/45.
    • tier2-test-ghidra.log: Passed 122/122.
    • tier2-test-decompiler.log: Passed 35/35.
  • Note: initial Ghidra/Decompiler --no-build checks produced Invalid TargetPath; reran with build and captured final passing evidence.