I am developing an open source library for reading and writing PS4 PKG files. This project's goal is to eliminate the need to use proprietary SDK tools. Without a proper open PKG tool, the PS4 homebrew scene cannot flourish.

All code in this repository is licensed under the GNU LGPL version 3, which can be found in LICENSE.txt.

PkgEditor is a GUI tool with which you can edit GP4 projects, and build PKG and PFS archives. Click File -> Open GP4..., then click Build PKG to create a PKG.

The tool also supports opening PKGs directly. You can see the header, entries, and if you put the EKPFS into <filename>.pkg.ekpfs next to your PKG file, you can browse files as well.

PkgTool.exe <verb> <input> <output>

Verbs:
  makepfs <input_project.gp4> <output_pfs.dat>
  makepkg <input_project.gp4> <output_directory>

• Reverse encryption and signatures
• Implement PFS and PKG signing
• Implement EKPFS generation

Everyone who helped, either directly or indirectly, but especially the following:

• flatz