pyuepak

pyuepak is a Python library for working with Unreal Engine .pak files.

Features

• Can read and write .pak versions 1–11
• Can read encrypted paks
• Can read Zlib, Oodle compressed paks

Installation

pip install pyuepak

Or install directly from the repository:

git clone https://github.com/stas96111/pyuepak.git
cd pyuepak
pip install -r requirements.txt
pip install .

CLT

pyuepak [OPTIONS] COMMAND [ARGS]...

Global option: --aes <key> — AES key for encrypted .pak files.

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Commands

Command	Description
info	Show info about a .pak file
list	List all files in the archive
extract	Extract one file
unpack	Unpack all files
pack	Pack a folder into .pak
read	Read a file and print to stdout

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Examples

pyuepak info -p game.pak
pyuepak unpack -p game.pak -o out/
pyuepak extract -p game.pak -f "Game/Content/file.txt"
pyuepak pack -i folder -o new.pak

Encrypted file:

pyuepak --aes 1234567890ABCDEF info -p encrypted.pak

Usage

from pyuepak import PakFile, PakVersion

pak = PakFile()
pak.read(r"path/to/pak.pak")

print(pak.list_files()) # ["/Game/asset.uasset", ...]
print(pak.mout_point) # "../../../" (default)
print(pak.key) # b'0000000...' AES key (default)
print(pak.path_hash_seed) # 0 (default)
print(pak.count) # prints file count

data = pak.read_file(r"/Game/asset.uasset") # return binary data
pak.remove_file(r"/Game/asset.uasset")

new_pak = PakFile()
new_pak.add_file("/Game/asset.uasset", data)
new_pak.set_version(PakVersion.V11)
new_pak.set_mount_point("../../..")

new_pak.write(r"path/to/pak.pak")

Contributing

Contributions are welcome! Please open issues or submit pull requests.

Credits

This project is based on information and ideas from two great open-source tools:

• repak
• rust-u4pak.

License

This project is licensed under the MIT License.