Vault7: CIA Hacking Tools Revealed
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Weeping Angel Time Research
SECRET // REL US, UK
Time on Smart TV
- TV Time
- Go to Menu > System > Time > Clock to configure/view time displayed anywhere on TV
- Auto correct pulls time based on timezone and DST
- Manual can be used to set time different from timezone
- TV Time is not effected and appears unrelated to the System Time
- TV Time settings persists through power cycles (TODO: check if manual time remains: suspected yes, and if System Time changes effect it: suspected no)
- Perhaps look into how the TV Time is being set and stored on the system
- System Time
- The system time resets to Unix Epoch (1 Jan 00:00:00 1970) each time the TV is unplugged
- The system time persists when remote is used to turn TV off (in fake-off mode)
- date command prints current system time (UTCCoordinate Universal Time)
Files created in the file system use the time reported by date as their creation/modification times
- Files created in /mtd_rwcommon with current (2014) timestamps remain unaltered even when TV resets to Unix Epoch on power cycle
- TODO: test implant to ensure timestamps on audio files use same time as reported by date
- NTP Syncing
-
ntpd and rdate (deprecated) are NTPNetwork Time Protocol clients included with BusyBox and can fetch time from server but cannot set local system time
- Error reported: "settimeofdate: bad address" related to underlying implementation in BusyBox
-
ntpclient (http://doolittle.icarus.com/ntpclient/) is an NTPNetwork Time Protocol client for unix-alike computer and is a small subset of xntpd (not included in BusyBox)
- Recommended by BusyBox in "External Tiny Utilities"
- Compiled for Linux on 32-bit build environment. Ran on Virtual Machine to test functionality
- Attempted to cross-compile for ARMProcessor manufacturer but got error related to glib version
Found pre-compiled ARMProcessor manufacturer build on SamyGo forums (forums.samygo.tv/download/file.php?id=1248)
-
Ran on TV using:
/mtd_rwcommon/ntpclient-arm -s -h pool.ntp.org
- Successfully updated system time from Unix Epoch to current time reported by NTPNetwork Time Protocol server (uses different method of setting time than BusyBox)
- -s flag for simple (implies -c 1) and -h for NTPNetwork Time Protocol host
- Returns string in format:
<days since 1900> <secs since midnight> <NTP transaction time> <internal server delay> <clock difference bt local and NTPNetwork Time Protocol (μS)> <dispersion> <adjtimex frequency (not implemented on ARMProcessor manufacturer)> - Check ntpclient-2010/README and HOWTO for more details on flags and reported strings
- HOWTO also has details on measuring and logging systems performance
- ntpdate does not exist on the TV or in BusyBox
- Syncing with NTPNetwork Time Protocol servers changes the System Time but appears to have not effect on TV Time
-
ntpd and rdate (deprecated) are NTPNetwork Time Protocol clients included with BusyBox and can fetch time from server but cannot set local system time
- Clock Drift
- Several simple attempts were made to measure the time drift
- First test - over 18 hours, drift was approximately 18 seconds
- Second test - Started at 15:50:30 UTCCoordinate Universal Time with System Time synced to pool.ntp.org
- Check results in 24 hours (do not power off TV)
- Look into ntpclient's logging and measuring characteristics of hardware clock over period of time
- Several simple attempts were made to measure the time drift
- Sync scripts (not started)
- Sync time with NTPNetwork Time Protocol server on power-on and once? per day
- Use non-US related NTPNetwork Time Protocol server
- mx.pool.ntp.org - Does not currently have enough (1 active) servers in country/time zone
- Recommend using north-america.pool.ntp.org (721 active)
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