Tool

Kaitai Struct

Turn documented binary layouts into reusable parsers for files and network packets. A .ksy specification can be inspected with visualizers and compiled to multiple languages, helping preserve reverse-engineered format knowledge in interoperable implementations.

Requirements and limitations

  • Provide a .ksy specification or adapt an existing format description; Kaitai generates parsers from that description rather than discovering unknown protocol semantics automatically.
  • The stable 0.11 universal compiler runs on Linux, macOS and Windows with Java 8+; Java 21 LTS is recommended. Generated parsers also need the selected language's Kaitai runtime.
  • Compiler and visualizer are GPL-3.0-or-later; runtimes have separate licenses, including MIT and Apache-2.0. Compiler licensing does not impose its license on input specifications or generated output.

About this entry

Type
Tool
Category
Binary analysis libraries
Relationship
Foundation tool
Targets
Binary · Firmware · Protocol

Sources reviewed

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

Primary sources

  1. https://github.com/kaitai-io/kaitai_struct/blob/5ca6630c7761d7f0d9c57fd8a4af1cc8adb75a6c/README.md
  2. https://github.com/kaitai-io/kaitai_struct_compiler/blob/fd2594257834241455f27121ae1adf296bcf09b9/README.md
  3. https://kaitai.io/
  4. https://github.com/kaitai-io/kaitai_struct_compiler/releases/tag/0.11