MikroTik rb450gx4 support

  1. prepare an empty micro sd card (2GB or above)

  2. use https://github.com/0ki/mikrotik-tools/blob/master/exploit-defconf/make_usb.sh to "format && prepare" the micro sd card, like this:

./make_usb.sh /dev/sdb
  1. when finished, plugin the micro sd card into the RB450Gx4 (you need open the outside iron box, and the sdcard slot is on the circuit board)

  2. make sure the your pc can connect to the RB450Gx4 (and the sshd service is open)

  3. execute the https://github.com/0ki/mikrotik-tools/blob/master/exploit-defconf/second_stage.sh , you'll asked to input the device ip and possible password if you have set.

  4. waiting for the device reboot, you'll login the root shell automatically.

  5. upload the busybox (https://busybox.net/downloads/binaries/1.28.1-defconfig-multiarch/busybox-armv7l) and give it executable permission, you can do whatever you want.

Notes: when you reboot the device, the root shell is gone, you need execute the second_stage.sh script again. and don't remove the sd card.

my device partition layout:

# cat /proc/mtd 
dev:    size   erasesize  name
mtd0: 00800000 00040000 "RouterBoard NAND 1 Boot"
mtd1: 1f800000 00040000 "RouterBoard NAND 1 Main"
mtd2: 00040000 00001000 "RouterBoot"