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Tool

dex2jar

Java toolkit that converts Android DEX bytecode, including DEX inside APKs, into JVM .class files packed as a jar for Java decompilers and bytecode tools. It also reads and writes DEX through an ASM-like API, disassembles and assembles smali with its own implementation, converts jars back to DEX and ships helpers such as d2j-decrypt-string.

Requirements & limits

  • The latest release, v2.4 of 2023-10-03 with the note “bugfix”, is the reviewed 2.x head, and no commits have followed it. Its download is dex-tools-v2.4.zip, while the README build steps still name a 2.1-SNAPSHOT archive. The README lists GitHub as the project's home after earlier Google Code, Bitbucket and SourceForge hosting.
  • Everything runs on Java: the build targets Java 8 with the Gradle 6.9.1 wrapper, ASM 9.5 and ANTLR 4.9.3, which d2j-smali keeps because newer ANTLR versions need Java 11+. The d2j-* commands are generated as shell and batch launchers. The CI workflow runs gradle check and distZip on JDK 8 for pushes, pull requests and release tags.
  • Input is a .dex or .odex file, or an APK or zip containing DEX, from the user's own app; the reader accepts DEX versions 035 to 040 and tries others with a warning. Output is a jar of class files rather than Java source, so reading code still needs a separate Java decompiler. Test resources hold small DEX and zip samples, and dex-translator/libs carries an Android dx 30.0.2 jar.
  • Apache-2.0, with copyright notices in LICENSE.txt and NOTICE.txt.

About this entry

Type
Tool
Category
Android tools
Relationship
Foundation tool
Targets
App

Sources reviewed

The description was reviewed against primary sources. This does not establish runtime testing, security auditing or verified compatibility.

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Primary sources

  1. README.md GitHub · pxb1988/dex2jar · Revision b5bda4f
  2. build.gradle GitHub · pxb1988/dex2jar · Revision b5bda4f
  3. d2j-smali/build.gradle GitHub · pxb1988/dex2jar · Revision b5bda4f
  4. dex-tools/src/main/bin_gen/class.cfg GitHub · pxb1988/dex2jar · Revision b5bda4f
  5. dex-reader/src/main/java/com/googlecode/d2j/reader/DexFileReader.java GitHub · pxb1988/dex2jar · Revision b5bda4f
  6. .github/workflows/gradle.yml GitHub · pxb1988/dex2jar · Revision b5bda4f
  7. gradle/wrapper/gradle-wrapper.properties GitHub · pxb1988/dex2jar · Revision b5bda4f
  8. LICENSE.txt GitHub · pxb1988/dex2jar · Revision b5bda4f
  9. NOTICE.txt GitHub · pxb1988/dex2jar · Revision b5bda4f
  10. https://github.com/pxb1988/dex2jar/releases/tag/v2.4

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