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git.stella-ops.org/docs/modules/scanner/operations/entrypoint-lang-go.md
master 7b5bdcf4d3 feat(docs): Add comprehensive documentation for Vexer, Vulnerability Explorer, and Zastava modules 
- Introduced AGENTS.md, README.md, TASKS.md, and implementation_plan.md for Vexer, detailing mission, responsibilities, key components, and operational notes.
- Established similar documentation structure for Vulnerability Explorer and Zastava modules, including their respective workflows, integrations, and observability notes.
- Created risk scoring profiles documentation outlining the core workflow, factor model, governance, and deliverables.
- Ensured all modules adhere to the Aggregation-Only Contract and maintain determinism and provenance in outputs.
2025-10-30 00:09:39 +02:00

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Entry-Point Runtime — Go

Signals to gather

  • Statically linked ELF with .note.go.buildid.
  • .gopclntab section (function name table) or Go build ID strings.
  • Minimal dynamic dependencies (often none) and musl/glibc loader differences.
  • GODEBUG, GOMAXPROCS, GOENV environment variables.
  • Go module artefacts: go.mod, go.sum.

Implementation notes

  • Use ELF parsing to locate .note.go.buildid; fallback to scanning the first few MB for Go build ID.
  • Distinguish from Rust/C by checking .dynsym count, presence of Go-specific section names, and the absence of GLIBCXX.
  • For distroless images, rely solely on ELF traits since no package metadata is present.
  • Record binary path and module files as evidence.

Evidence & scoring

  • Strong boost for .note.go.buildid or .gopclntab.
  • Add evidence for module files or env variables.
  • Penalise binaries with high numbers of shared libraries (likely C/C++).

Edge cases

  • TinyGo or stripped binaries may lack build IDs—fall back to heuristics (symbol patterns, text section).
  • CGO-enabled binaries include glibc dependencies; still treat as Go but mention CGO in evidence if detected.
  • Supervisors wrapping Go services (e.g., envoy) should be handled upstream by wrapper detection.