# CalebFenton/simplify

Android virtual machine and deobfuscator

Repository: https://github.com/CalebFenton/simplify
Canonical: https://ross.abutalabs.com/products/simplify
Language: Java
License: NOASSERTION
License Family: other
Topics: deobfuscation, java, optimization, android, reverse-engineering, malware-analysis, dalvik, malware, deobfuscator, virtual-machine, emulator, malware-analyzer, android-malware, malware-research, reverse-engineer-apk
Last push: 2022-04-30T12:20:33+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4612, "days_push": 1586, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4657, forks 455 (observed 2026-08-28T04:08:55.705423+00:00)

## What it is
Simplify is a generic Android deobfuscator that virtually executes Dalvik methods in a sandbox (smalivm) and applies optimizations like constant propagation and dead code removal to make obfuscated code easier to read. It is a Java CLI tool that does not rename methods or classes.

## Use cases
- deobfuscate an obfuscated Android APK
- decrypt strings hidden by Android obfuscators
- remove reflection from Dalvik bytecode
- analyze Android malware samples
- execute Dalvik methods in a sandbox for analysis
- simplify smali code for reverse engineering

## When to choose
- you need to reverse engineer obfuscated Android apps
- you analyze Android malware and want readable code
- you want to decrypt string constants or remove unreflection in DEX code
- you need a sandbox to execute Dalvik methods with unknown values

## When to avoid
- you need to rename obfuscated methods and classes
- you target non-Android JVM bytecode
- you need an actively maintained tool with recent updates
- you want a GUI-based reverse engineering workflow

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: reverse-engineering, interpreter, security, parser
- domain: security, reverse-engineering, android-tools, developer-tools
- platform: jvm, cli, cross-platform
- tags: dalvik, smali, deobfuscation, android-malware-analysis, virtual-execution, smalivm

## Member repositories
- CalebFenton/simplify (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:55.705423+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:19:27.761125+00:00, confidence not recorded.
  - readme: https://github.com/CalebFenton/simplify (fetched 2026-08-28T04:08:55.705423+00:00, sha 7bb92f37ccc8)
- Data as of 2026-08-30T08:39:29.467469+00:00.