jadx – Dex to Java Decompiler

jadx – Dex to Java Decompiler

jadx – Dex to Java decompiler

Command line and GUI tools for produce Java source code from Android Dex and Apk files.

Building from source

git clone https://github.com/skylot/jadx.git
cd jadx
./gradlew dist

(on Windows, use gradlew.bat instead of ./gradlew)
Scripts for run jadx will be placed in build/jadx/bin and also packed to build/jadx-<version>.zip

Run
Run jadx on itself:

cd build/jadx/
bin/jadx -d out lib/jadx-core-*.jar
#or
bin/jadx-gui lib/jadx-core-*.jar

Usage

jadx[-gui] [options] <input file> (.dex, .apk, .jar or .class)
options:
-d, --output-dir - output directory
-j, --threads-count - processing threads count
-r, --no-res - do not decode resources
-s, --no-src - do not decompile source code
-e, --export-gradle - save as android gradle project
--show-bad-code - show inconsistent code (incorrectly decompiled)
--no-replace-consts - don't replace constant value with matching constant field
--escape-unicode - escape non latin characters in strings (with \u)
--deobf - activate deobfuscation
--deobf-min - min length of name
--deobf-max - max length of name
--deobf-rewrite-cfg - force to save deobfuscation map
--deobf-use-sourcename - use source file name as class name alias
--cfg - save methods control flow graph to dot file
--raw-cfg - save methods control flow graph (use raw instructions)
-f, --fallback - make simple dump (using goto instead of 'if', 'for', etc)
-v, --verbose - verbose output
-h, --help - print this help
Example:
jadx -d out classes.dex

Troubleshooting

Out of memory error:

  • Reduce processing threads count (-j option)
  • Increase maximum java heap size:
    • command line (example for linux): JAVA_OPTS="-Xmx4G" jadx -j 1 some.apk
    • edit ‘jadx’ script (jadx.bat on Windows) and setup bigger heap size: DEFAULT_JVM_OPTS="-Xmx2500M"

Contribution
To support this project you can:

  • Post thoughts about new features/optimizations that important to you
  • Submit bug using one of following patterns:
    • Java code examples which decompiles incorrectly
    • Error log and link to public available apk file or app page on Google play

http://feeds.feedburner.com/PentestTools