through-the-backdoor

Hey, our agent extracted some useful files while installing the backdoor. disk: the laptop hdd OVMF.fd: firmware extracted from the laptop System.map, vmlinux: debug symbols for the kernel, there seem to be no changes from upstream source VariableRuntimeDxe.debug: I don't know what this is, but I think it's important for the backdoor

The agent also send me some commands, but I have no idea what this means: target remote :1234 add-symbol-file vmlinux add-symbol-file VariableRuntimeDxe.debug 0xfffffffeffac9000