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rgg_save_tool_py

A tool for encrypting and decrypting RGG studios game saves.

Download (For non-technical people)

To download an executable, that is to say a program you can run and use right now: Download here!

Credits

Original Tool by @SutandoTsukai181

Original decryption code from here by @simontime. I added proper checksum calculation and automatic game detection to the code, and converted it to python.

  • Yakuza 6 Key discovered by @jason098
  • Judgment Key discovered by @Ret-HZ
  • Lost Judgment Key discovered by @jason098
  • Ishin Key discovered by @Ret-HZ
  • Ishin platform format conversion code, and Unit tests by @jeottesen
  • YLAD GOG Key discovered by @Timo654
  • Yakuza Kiwami 2 Key discovered by @simontime
  • Like a Dragon: Infinite Wealth Key discovered by Committee of Nerds

Finding save keys

In Ghidra

  • Search for a function called: "GetFileTime", and scroll up on each xref, find a string in that function. If not find the next.
  • Find strings for: "%s/%s/save%03d_icon0.dds" and scroll up on each xref, to find "GetFileTime" and search for a string.