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P1sec/hermes-dec

A reverse engineering tool for decompiling and disassembling the React Native Hermes bytecode observed · 2026-08-28

github.com/P1sec/hermes-dec · Python · AGPL-3.0 (copyleft) observed · 2026-08-28

Health v2 · maintenance only

98/100

  • Activity 97
  • Release rhythm 97
  • Longevity 100
How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.

  • gap_med: 18
  • age_days: 1412
  • days_rel: 22
  • days_push: 22
  • n_releases_24m: 8

Full methodology

Adoption not part of the score

1156 stars · 94 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

hermes-dec is a Python-based reverse engineering tool that disassembles and decompiles React Native applications compiled to the Hermes VM bytecode (HBC) format. It parses Hermes bytecode files such as assets/index.android.bundle from Android APKs and produces readable disassembly or decompiled output.

Use cases

  • decompile hermes bytecode from a react native android app
  • disassemble index.android.bundle hbc files
  • analyze react native mobile app internals for security research
  • reverse engineer a react native ios app using hermes
  • inspect hermes vm bytecode version 84
  • audit third-party react native applications

When to choose

  • you need to analyze or audit a React Native app compiled with the Hermes engine
  • you want an open-source disassembler/decompiler for HBC files
  • you prefer a dependency-free Python 3 tool installable via pipx, uv, snap, or AUR

When to avoid

  • the target app uses plain minified JavaScript instead of Hermes bytecode
  • you need a full JavaScript decompiler for non-Hermes bundles
  • you need a GUI-based reverse engineering suite

Facets

cli-tool · maturity active

reverse-engineering parser developer-tools reverse-engineering mobile-development security developer-tools python cli cross-platform hermes react-native decompiler disassembler bytecode hbc javascript

2 sources

Member repositories

RepositoryRoleHealth v2
P1sec/hermes-decmain98

For agents

markdown · JSON · MCP: product_card(name="P1sec/hermes-dec")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem