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Wilux, posted Thu Mar 09, 2023 1:24 pm (75771)

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I have remade the UPKPacker that Odd14lab made 10 years ago and put the source on github. It should work for all upks it supported.

- Source
https://github.com/wiluxgit/UE3Repacker
(windows binary is attached to post)

- What does it do:
It separates UE3 .upk files into a massive directory of asset files. Meshes/Materials/Textures/etc.
You can repack a directory of these files into a new upk file. Mod the game by overriding the original upk with the new edited upk.

The unpacked files are raw ue3 assets, how easy they are to comprehend/edit/replace depends on the game but the benefit of upkpacker is that works with many many games without requiring individual support.

A simplest way to use the program is swapping around meshes in the directory.

- Why remake it?
Having it on GitHub allows community fixes to support more games.
Working with the unpacked files and having control of the source is convenient for building smarter editing tools.

- How did i remake it?
I reversed he program in Ghidra for reference and then rewrote the whole thing to make it human readable.
The results are identical to Odd14lab's packer so you could mix them. The cli is different however.

ue3repacker-2023-03.zip