Recaf

Recaf is an open-source Java bytecode editor based on Objectweb’s ASM. ASM is a library that abstracts away the constant pool and class-file attributes. Since keeping track of the constant pool or managing proper stackframes are no longer necessary, complex changes can be made with relative ease. With additional features to assist in the process of editing Recaf is the most feature-rich free bytecode editor available.

Libraries used:

• ASM – Class editing abilities
• CFR – Decompilation
• Simple-Memory-Compiler – Recompilation of decompiled code
• JIMFS – Virtual file system
• ControlsFX – Custom controls (Used in pretty much everything)
• RichTextFX – Decompiler code highlighting
• JRegex – Pattern matching for decompiler code highlighting
• minimal-json – Json reading/writing for config storage
• Commonmark – Markdown parsing
• picocli – Command line argument parsing

Changelog v1.15.7

What’s new

• Agents can now specify ignored packages (defaults to ignoring JDK/Recaf packages) via the attach window
  • Also works with a command line argument --skip package1 package2 ...
• Search now supports annotation values (Strings, constants)
• Removed outdated threading options
• Simplified overly verbose auto-generated icons for classes
• Changed config group names so their purpose is more obvious

What’s fixed

• Changed resource references to a uniform style
• Fixed “global” keybinds only working on the main window
• Fixed potential compilation problem (Behavior differed between users despite seemingly having the same setup)
• Fix regression where the auto-jdk-11 patcher would fail to patch in the required dependencies
• Assembler
  • LDC could not contain an empty string
• Testing
  • Disabled a flaky test
  • Fixed Travis not being able to execute tests
  • Fixed tests failing in paths with spaces

Download & Use

Copyright (c) 2017-2018 Matthew Coley