*updated April 26, 2017* Supports dxt1 and dxt3 xbt textures with partial support for 2 more types. I have not figured them out completely yet.
There is no data type check because i have not figured out how to do this when the file has no magic header.
You can extract the files from the data.zwp with aluigi's bms script here
viewtopic.php?p=52097#p52097
The format is mostly dds with a custom header but i am proud of this script because it is my first real one and
i wanted the practice and now you can open these files with Noesis.
edit
I have updated the script with partial support for two more texture types i ran into with this game, i am not 100% sure
what they are but the updated script will let you view and convert all of the textures without hitting errors.
when i figure out exactly what the two types are i will update the plugin again.
