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We walked into a casino and saw this near the entrance. I don't have a specific question, but is there anything that would be interesting to share and explain from the image?

Casino slot machine segfault

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Well, I just learned that Bose apparently makes slot machines. :/ – SteveS Jan 7 at 8:16
@SteveS Nope, they just specialise in small speakers, which this slot machine just happens to use. The manufacturer of this slot machine is WMS. – Polynomial Jan 7 at 12:45
it dropped you to a root shell! too bad you didn't have a keyboard attached... – Rook Jan 7 at 16:08
I tried pressing buttons on the machine, hoping you could somehow type with them, but no luck – DelvarWorld Jan 7 at 18:49

1 Answer

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A few observations:

  • It's a 32-bit Linux OS. Difficult to tell which distro - might be something custom.
  • They're running the latest version of Bash shell.
  • It contains an NVRAM device, such as an onboard EEPROM, which failed to initialise due to corruption. These are often used as tamper-proof storage modules that contain the game code.
  • It's on the network (IPv4 address is 10.254.0.10) and an NTP client is running.
  • No idea what rds_doNSQuery or RDSU_QUERY_NOWAIT mean.
  • The eip and esp registers weren't trashed by the crash, so I'd guess the crash was a forced segfault due to integrity checking failure, rather than a buffer overflow.

All in all, a rather interesting crash. Nice catch!

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looks like the network cable has fallen out and it requires network before proceeding. I imagine a lot of modern gaming machines work like that nowadays. – Callum Wilson Jan 7 at 9:45
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If that was the case, eth0 probably wouldn't have a 10.x.x.x address; it'd probably mark itself as down. – Polynomial Jan 7 at 9:47
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Another observation; it's on a 6-bit (64 machine) subnet. – lynks Jan 7 at 13:40

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