netease neox engine NetEase NeoX Engine - File Formats

[TeaEffTeu]

This topic is for discussion of file formats used by the NetEase NeoX Engine.

[JohnSmith]

One thing's for sure: Neox engine's npk files don't include file paths, at least not in Identity V.

I've got an idea – what if we create a file directory and then use a BMS script to read this directory and store file names and their hash values in a dictionary? This way, we could quickly find file names later using their hash values.

Check out this example: https://github.com/Ekey/LA.NPK.Tool/blob/main/LA.Unpacker/LA.Unpacker/FileSystem/Package/NpkHash.cs

Here's a part of the chr.mini.npk file directory I built, along with the .map file I found:

 

Chr.mini.map and filelist: https://mega.nz/folder/rdJniYTJ#N-kmNu-N8B5KyqvbBzw9TA

Download link for chr.mini.npk: https://h55.gph.netease.com/androiduni_netease_2.79.125221.1782109/chr.mini.npk

Edited July 23, 2024 by JohnSmith

[jjo0]

that is what i do i make a dictionary with the filename paths and then restore the filenames by execting strings on the unpacked exe then i run the hash function on them

[Jenny1367]

there's a game called 世界之外 using neoX, with a seemingly new format: (example from a while ago  but should still apply)example.zip

Game website: https://world.163.com/

APK: https://adl.netease.com/d/g/world/c/gw?type=android

I can provide more examples if needed

[JohnSmith]

On 12/1/2024 at 6:30 PM, jjo0 said:

that is what i do i make a dictionary with the filename paths and then restore the filenames by execting strings on the unpacked exe then i run the hash function on them

 how do you restore the filenames by execting strings on the unpacked exe ? Do you have good idea?