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This page will be dedicated to a general overview, descriptions, and information related to the LG BP530 Blu-Ray player.
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You can find GPL code for the LG BP530 Here
A bug exists in the MTK supplied SDK which affects many Blu-Ray players, including the BP530. The main binary, which controls all aspects of the player has leftover debug instructions for the VUDU app. When the VUDU app is run, if a file exists named "vudu.txt" , in a directory labeled "vudu" on a FAT formatted flash drive it will attempt to execute "vudu/vudu.sh", and deletes vudu.txt. It runs this sh as root. Using the commands below, you can spawn a root telnet shell, allowing access to the device:
- Create a folder named "vudu" on a FAT formatted flash drive.
- Inside that folder, create a blank file named "vudu.txt"
- Also in that folder, create a file named "vudu.sh" containing the following:
#!/bin/sh echo "executing" > /mnt/sda1/vudu.txt mount -t overlayfs -o overlayfs /etc/passwd echo "root::0:0:root:/root:/bin/sh" > /etc/passwd /mnt/rootfs_normal/usr/sbin/telnetd
- Start the player with the flash drive plugged in, and execute the VUDU app. The code has been executed, and a telnet shell now exists for you to connect to on port 23 as root. Following this, you will be brought back to the main menu.