WasmLens: exploratory WebAssembly inspection

Requirements & limits

• The reviewed package declares version 0.1.0 and Python >=3.10, with Typer, Rich, FastAPI, Uvicorn, Pydantic, NetworkX and python-multipart dependencies; pytest/httpx are development extras. The source includes an MIT LICENSE. Dependency lower bounds are declared.
• The info, disasm and decompile commands read a supplied .wasm file through the same parser. That parser has no 0xFD SIMD decoding branch and may label unsupported opcodes as unknown.
• The WAT-style module listing is not a lossless reassembly format: data segments are reduced to previews of up to 32 bytes and active offsets use a placeholder. The C-like reconstructor has no general fallback for unhandled instructions, uses only the first result type, and expresses branch labels in comments.
• Its dispatch lacks handlers for operations including floating-point arithmetic and indirect calls, and an unhandled instruction can advance the program counter without implementing its effect.
• Supply only modules you are permitted to analyze.

About this entry

The description was reviewed against primary sources.

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Primary sources

1. README.md GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
2. pyproject.toml GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
3. LICENSE GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
4. src/wasmlens/cli/main.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
5. src/wasmlens/parser/module.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
6. src/wasmlens/parser/section_parser.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
7. src/wasmlens/parser/opcodes.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
8. src/wasmlens/disassembler/wat_formatter.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
9. src/wasmlens/decompiler/reconstructor.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
10. src/wasmlens/decompiler/ast.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
11. src/wasmlens/emulator/vm.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
12. tests/test_decompiler.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc
13. tests/test_parser.py GitHub · alexandrmotologa/wasmlens · Revision 2351ccc