Abusing the Internet of Things

/media/exe.img/Runtime/bin:

total 7228

drwxr-xr-x 2 root root 103 Apr 28 2013.

drwxr-xr-x 9 root root 152 Apr 28 2013 ..

-rwxr-xr-x 1 root root 4356171 Apr 28 2013 compiz

-rwxr-xr-x 1 root root 17237 Apr 28 2013 fc-cache

-rwxr-xr-x 1 root root 14044 Apr 28 2013 gdk-pixbuf-query-loaders

-rwxr-xr-x 1 root root 3010259 Apr 28 2013 X

-rwxr-xr-x 1 root root 2241 Apr 28 2013 xorg.conf

Here’s a snippet from the xorg.conf file:

Section "Screen"

Identifier "Mali Screen"

Device "Mali FBDEV"

Monitor "Mali Monitor"

DefaultDepth 24

SubSection "Display"

ViewPort 0 0

Modes "1920x1080@60" "1024x768" "1280x720" "960x540@60"

"960x540@50"

"720x576" "1920x720@50d" "720x480" "960x1080@50"

"960x1080@60"

"1920x540@60" "1920x540@50"

EndSubSection

EndSection

This appears accurate since the firmware we are looking at is for an HD-capable TV and
the true HD resolution is 1920 x 1080, which is listed as the first preference. Other resolu-
tions are also available.
Another interesting item to note on our cursory quest to understand the underlying sys-
tem is the presence of .cmk files:

$ ls -l /media/exe.img/infolink/manager/*.cmk

-r--r--r-- 1 root root 640 Apr 28 2013 /media/exe.img/infolink/manager/

config.xml.cmk

-r--r--r-- 1 root root 11872 Apr 28 2013 /media/exe.img/infolink/manager/

index.html.cmk

These are “encrypted” files, but the keys for them have already been leaked and are avail-
able on the SamyGO forum (Figure 5-4).

140 CHAPTER 5: THE IDIOT BOX—ATTACKING “SMART” TELEVISIONS