I can't open my electronic vault anymore :( I reverse engineered a bit of the PCB and attached a JTAG debugger to it, but I can't seem to be able to dump the code and figure out how to reset the PIN. Could you help me out here?

You can access the vault here: http://136.243.194.58:8080

Some nice German music while you solve this challenge: https://www.youtube.com/watch?v=KfWyo2mqXnw