1st you need to download fresh python for Windows -> Python/Releases and install it
[ ! ] don't forget to check (include to PATH) option in checkbox, then open cmd (Win+R type cmd, Enter) and type:
pip install pyinstaller
after successful install, in your cmd type:
pyinstaller dumpPakKey.py -F
[ ! ] make sure you are at the same directory where dumpPakKey.py is...
[ i ] switch directory in cmd.
cd \DirectoryName\dumpPakKey.py
after complition, check \Dist\ directory for your created *.exe to run your (created with PyInstaller) *.exe open cmd , cd to path where your *.exe is and type the following:
dumpPakKey.exe name_of_your_game-Shipping.exe
or just drag and drop your *.exe file on dumpPakKey.exe it will automatically create Crypto.json for you.
then in cmd run:
UnrealPak.exe name_of_your_game-WindowsNoEditor.pak -cryptokeys=Crypto.json
or use *.bat file
Have fun!)
builded *.exe is here -> dumpPakKey.exe
NOTICE: It was successfully tested in created (Shipping mode) projects in UE4 4.25.3
NOTICE: It was created "for science purposes only" in order to dump real life projects, you need to be shure they arent obfuscated by their loaders witch most of games have
NOTICE: Pattern used to find key section may change in other unreal engine build's, and you will need to manually change pattern, and rebuild *.py to *.exe