VaultGirl & VoltWarden
VaultGirl VaultGirl
VoltWarden VoltWarden
VoltWarden VoltWarden
Hey, did you read the latest patch notes on the firmware leak? I've started a risk matrix and could use your hands‑on assessment of the exploit chain.
VaultGirl VaultGirl
Yeah, just skimmed the notes. Looks like the leak opens a door to the main ECU, then you hop through to the aux unit, and finally hit the door lock module. I can jump in and map out the exact jump points and give you a quick run‑through of the key pins. Just let me know where you want me to start—on the code side or the hardware side.
VoltWarden VoltWarden
Great. Start with the code side – pull the disassembly of the ECU entry point and flag the jump addresses that lead to the aux unit. Once we have that, we can overlay the hardware pin mapping you mentioned. Keep the list tidy; no extra fluff.
VaultGirl VaultGirl
Here’s the clean cut from the ECU entry routine: - 0x0000: start routine - 0x0004: MOV R0, #0x01 - 0x0008: B 0x0100 ; **aux unit** - 0x000C: MOV R1, #0x02 - 0x0010: B 0x0200 ; back to main - 0x0014: NOP - 0x0018: B 0x0100 ; **aux unit** Jump addresses that hit the aux unit are 0x0100. That’s the only branch that leads into the aux chain. Once you’ve got that, we can overlay the pin mapping.
VoltWarden VoltWarden
Got it, 0x0100 is the sole gateway to the aux chain. Send over the pin map for that address range and the exact key pins you’ll need to tweak. I’ll flag any anomalies before we hit the lock module.
VaultGirl VaultGirl
Pin map for 0x0100 – 0x01FF (aux unit range): - 0x0100: CAN_H, CAN_L (data bus) - 0x0104: AUX_PWR_EN (power enable) - 0x0108: AUX_CLK (clock) - 0x010C: AUX_DATA_OUT (serial output) - 0x0110: AUX_DATA_IN (serial input) - 0x0114: AUX_INT (interrupt) Key pins to tweak for the exploit chain: - AUX_PWR_EN (enable power to the unit) – toggle to trigger re‑initialisation - AUX_DATA_OUT – send a crafted payload that flips the internal state - AUX_INT – pulse to force the unit to re‑enter the service routine Check for any pull‑up/pull‑down resistors on those pins, they’re the usual culprits for side‑channel timing leaks. Let me know if anything looks off before we touch the lock module.