Tool to play with NPK files as they are used in NetEase's NeoX Engine.

It currently supports the format used in a early 2020 Version of Eve Echoes. This includes listing of files and decompressing them with LZ4.

Support for Encrypted and ZLib files is planned and will follow soon...

For each file in the NPK the tool will try to determine the mime type and add an appropriate file extension. This is on a best guess basis and the mapping is currently somewhat limited (but handles all files in Eve Echoes mostly correct)

• RC4 Encryption Support
• Simple Encryption Support
• Zlib Support
• Re-packing of NPK
• Probably some refactoring and more 'tools' in the future

All you have to do to build it is clone it an run on of the following:

cargo build --release

or to install

cargo install --path .

Example:

npktool x script.npk

This will extract all the files in script.npk to the out directory.

You can also supply a list of .npk files, and if those contain a filelist file, the tool will automatically detect it and put the files in the original file structure:

In Eve Echoes the filelist file usually resides in res0.npk

npktool x res0.npk res1.npk res2.npk res3.npk res4.npk res5.npk res6.npk res7.npk res8.npk res9.npk res10.npk res11.npk res12.npk

More info on how to use it can be found in the help section. npktool --help