f00dsimpleserial

Implementation of Simple Serial for F00D.

Commands

This is the SimpleSerial protocol with some additional commands for AES256 as well as a simple RPC. The only other change is that the trigger is XD\r\n over UART.

Command	Example	Description	In/Out
k	k2b7e151628aed2a6abf7158809cf4f3c\n	Set AES-128 key	In
K	K603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4\n	Set AES-256 key	In
p	p6bc1bee22e409f96e93d7e117393172a\n	Send input plain-text, cause encryption	In
P	P6bc1bee22e409f96e93d7e117393172a\n	Send input plain-text using software implementation, cause encryption	In
r	r3ad77bb40d7a3660a89ecaf32466ef97\n	Result packet for command.	Out
v	v\n	Check protocol version (ACK on v1.1)	In
x	x\n	Clears Buffers (resets to 'IDLE' state), does not clear any variables.	In
z	z00\n	ACK - Command processing done (with optional status code)	Out
s	s0208000810\n	Set keyslot, dst keyslot, & key length. Two bytes keyslot to use, two bytes dst keyslot (zero for direct). Last byte is 10 for AES128 and 20 for AES256. All big endian.	In
a	a1F84000000004000\n	Access memory. First four bytes is address in big endian. Next four bytes is length in big endian.	In
w	w3000000000000001\n	Write 32-bits. First four bytes is address in big endian. Next four bytes is the value in big endian.	In
R	R30000000\n	Read 32-bits. First four bytes is address in big endian. Returns value in big endian.	In
j	j005C0000\n	Jump to code. Four byte address in big endian. Returns result packet in little endian.	In
l	l00000100\n	Fast loop. Four byte big endian times. Loops 8*(times+1) times.	In
L	L00000100\n	Slow loop. Four byte big endian times. Loops 4*(times+1) times.	In

Building

Have the MeP toolchain in your PATH and run make. payload.bin can be used with the Petite Mort exception payload. f00dexec.bin can be used with taif00d.