DumpKeys

This is a GodMode9 script that dumps all the keys and other related secrets that Citra needs from a real 3DS.

Usage:

Copy "DumpKeys.gm9" into the "gm9/scripts/" directory on your SD card.
Launch GodMode9, press the HOME button, select Scripts, and select "DumpKeys" from the list of scripts that appears.
Wait for the script to complete and return you to the GodMode9 main menu.
Power off your system and copy the "gm9/aes_keys.txt" file off of your SD card into "(Citra directory)/sysdata/".