dex2jar

Convert Android DEX files to Java JAR files for analysis

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Tools to work with Android .dex and Java .class files

d2j-dex2jard2j-jar2dexd2j-apk-sign

Convert a DEX file to JAR format$ d2j-dex2jar classes.dex -o classes.jar

Convert an APK file to JAR (extracts and converts DEX)$ d2j-dex2jar app.apk -o app.jar

Convert a JAR file back to DEX format$ d2j-jar2dex classes.jar -o classes.dex