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Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

tomshardware.com

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Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#81

Note this only affects the very first original 2013 "VCR" hardware. Newer revisions and variants are still unaffected.

They're pretty common and cheap on the used market, though. I bought mine from a thrifts store for $30, and the console itself regularly goes for ~$50 on eBay.

Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#82
post #72

> Whether PC users, our core readership, will be interested in actually emulating Xbox One, looks unlikely. The 2013 system’s game library is largely overlapped in better quality on the PC platform. And this explains why it's stayed unhacked so long. There was very little incentive to hack the system when the games are all playable on a PC. Pirates, cheaters, archivists, and hackers could just go there. Microsoft's b…

The other major incentive for hacking the console Microsoft removed was for the first time on a modern mainstream home console to allow side loading of homebrew code/emulators etc. The console supported a developer mode that allowed side loading of third party applications, so folks could get emulators and other traditionally "banned" content on the console through an officially supported route. There's a great prese…

You are 100% correct but they started clamping down on people using Dev mode strictly for emulators and homebrew. So here we are.

Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#83
post #43

Created a voltage drop that exactly occurred to be timed to the key comparison, then a spike at the continuation. Irl noop and forced execution control flow to effectively return true. B e a utiful

It's fascinating - how does one defend against an attacker or red-team who controls the CPU voltage rails with enough precision to bypass any instruction one writes? It's an entirely new class of vulnerability, as far as I can tell. This talk https://www.youtube.com/watch?v=BBXKhrHi2eY indicates that others have had success doing this on Intel microcode as well - only in the past few months. Going to be some really e…

not a new vulnerability class.

Extremely impressive feat nonetheless!

Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#84

Earlier quoted context omitted.

The new Xbox is going to be a specialized PC running Windows with full access to third party game stores (Steam, Epic, etc). It won't need to be "hacked" because anyone will already be able to run any software they want on it.

What is the point of a device like this if the only difference is form factor? Why wouldn't someone just buy a pre-configured gaming PC?

It's a device with a fixed, known-good set of hardware for developers to target, which is all that any of the major consoles is. Your question applies just as much to the Steam Deck and upcoming Steam Machine.

Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#85
post #46
post #43

Earlier quoted context omitted.

It's fascinating - how does one defend against an attacker or red-team who controls the CPU voltage rails with enough precision to bypass any instruction one writes? It's an entirely new class of vulnerability, as far as I can tell. This talk https://www.youtube.com/watch?v=BBXKhrHi2eY indicates that others have had success doing this on Intel microcode as well - only in the past few months. Going to be some really e…

You can't. Console makers have these locked-down little systems with all the security they can economically justify... embedded in an arbitrarily-hostile environment created by people who have no need to economically justify anything. It's completely asymmetrical and the individual hackers hold most of the cards. There's no "this exploit is too bizarre" for people whose hobby is breaking consoles, and if even one of…

> You can't

It's a moot point, they are not trying to prevent it. They only need to buy enough time to sell games in the lifespan of the hardware, which they did.

> all the security they can economically justify...

It seems like they did a perfect job, it lasted long enough to protect Microsoft game profits.

Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#86
post #43

Earlier quoted context omitted.

It's fascinating - how does one defend against an attacker or red-team who controls the CPU voltage rails with enough precision to bypass any instruction one writes? It's an entirely new class of vulnerability, as far as I can tell. This talk https://www.youtube.com/watch?v=BBXKhrHi2eY indicates that others have had success doing this on Intel microcode as well - only in the past few months. Going to be some really e…

Basically if someone has physical access to device, its game over. You can do things like efuses that basically brick devices if something gets accessed, but that becomes a matter of whether the attacker falls for the trap.

Only if they leave a door open, which they did here.

If your argument is that you can't hope to close every door, then AI will make it easier to close all the doors in the future.

Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#88

Earlier quoted context omitted.

The new Xbox is going to be a specialized PC running Windows with full access to third party game stores (Steam, Epic, etc). It won't need to be "hacked" because anyone will already be able to run any software they want on it.

What is the point of a device like this if the only difference is form factor? Why wouldn't someone just buy a pre-configured gaming PC?

Let's speculate that they need a carrot for Windows developers when they attempt to use a monopoly stick on the Steam Deck.

Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#89

Earlier quoted context omitted.

The new Xbox is going to be a specialized PC running Windows with full access to third party game stores (Steam, Epic, etc). It won't need to be "hacked" because anyone will already be able to run any software they want on it.

What is the point of a device like this if the only difference is form factor? Why wouldn't someone just buy a pre-configured gaming PC?

There's something to be said for having a standard, known SKU, both as something for developers to target if enough people own it, and for users to troubleshoot if they're e.g. having an issue running X game.

This kind of already exists with the "Deck Verified" label on Steam games.

That said, this sounds similar to Valve's upcoming Steam Machine and I'd much prefer that to be the standard console/PC hybrid to keep the Linux gaming momentum going, and perhaps one day I can ditch Windows for good.

Re: Microsoft's 'unhackable' Xbox One has been hacked by 'Bliss'

#90
post #30

Created a voltage drop that exactly occurred to be timed to the key comparison, then a spike at the continuation. Irl noop and forced execution control flow to effectively return true. B e a utiful

The earliest example I know of for this is CLKSCREW, but security hardware (like for holding root CA private keys) was hardened against this stuff way before that attack. Has anyone heard of notable earlier examples?

In terms of fault injection as a security attack vector (vs. just a test vector, where it of course dates back to the beginning of computing) in general, satellite TV cards were attacked with clock glitching at least dating back into the 1990s, like the "unlooper" (1997). There were also numerous attacks against various software RSA implementations that relied on brownout or crowbar glitching like this - I found https://ieeexplore.ieee.org/document/5412860 right off the bat but I remember using these techniques before then.
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