Yet another PlayStation 4 exploit has been found. While it may not be one that lets you run CFW, this bug has its own intriguing uses. Scene hacker Flat_z managed to come up with a code that exploits the PS4's Crypto Coprocessor interface. This can lead to being able to bruteforce certain specific keys from the console, such as the AES/HMAC PFS, portability keys, and VTRM, which can then be dumped. This exploit can be used on any PS4 on firmwares below 7.55, as that's when Sony apparently patched the issue. While this doesn't have much use for the end-user right now, we'll be able to see what developers can do with them and if they can further the PlayStation 4 hacking scene.

so, PS4 Crypto Coprocessor (CCP) interface in secure kernel had a bug that allowed us to dump (or better saying, bruteforce) key slots from SAMU,
that's how AES/HMAC keys from PFS, portability keys, VTRM keys, etc could be retrieved on unpatched firmware:https://t.co/6V1BFnKxuM

— Aleksei Kulaev (@flat_z) December 18, 2021

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Source

 

[Randqalan]

Ok but POC needed I know this is possible just like hack update.PUP maybe hacked to pkey but worthless unless a show how!

 

[Delerious]

Nice to see this kind of development in the PS4 scene, even if it is only for 7.55 atm. It would be nice to see the PS4 scene start breaking more ground, given how slow things have been.

 

[Randqalan]

Nice to see this kind of development in the PS4 scene, even if it is only for 7.55 atm. It would be nice to see the PS4 scene start breaking more ground, given how slow things have been.

For once with 9.00 exploit not really. major web and fat and updates to bin files for almost everything from 5.05 great devs to update almost everything already.

 

[Viri]

Ah man, I don't want to get tempted to by a PS4! lol

 

[Marc_LFD]

Ah man, I don't want to get tempted to by a PS4! lol

If you find a PS4 Slim/Pro with 9.00 it's well worth buying. If interested, better hurry it up before Sony releases yet another "stability" firmware.

 

[Sphaa]

Will these keys make it possible to the swap out a broken Blu-ray drive with one from another concole?

 

[Jayro]

If you find a PS4 Slim/Pro with 9.00 it's well worth buying. If interested, better hurry it up before Sony releases yet another "stability" firmware.

I think my pro is on 8.xx firmware, haven't turned it on in months.

 

[Marc_LFD]

I think my pro is on 8.xx firmware, haven't turned it on in months.

Don't let it automatically update, but since it wasn't turned on that long it should be safe.

Firsr thing I did to our PS4 Slim was disable internet so it wouldn't somehow update by itself.



Gonna follow this tutorial and hack it. I've got the USB prepared and games to install.

It's ridiculous Sony shipped PS4s only with 500GB to 1TB since games are a lot bigger these days. RDR2 is over 100GB+. Yikes.

 

[VashTS]

well dang i had a 7.55 and an 8.03, i couldve had the best of both

 

[spotanjo3]

I am glad that I am staying with 5.05 these days. And still today.

 

[ZeroFX]

Nice to see more progress on PS4 hacking, let's tear that thing open.

 

[cearp]

Are any of the keys this dumps 'per console'? If so, probably best to dump them before I update to 9.0 right?
But this currently is just code, not a payload.

 

[chrisrlink]

one step closer to cold boot cfw...i hope but dang the ps4 can't catch a break this month

 

[eyeliner]

Hdds will skyrocket, with the sizes of the games that people will... Backup, for safekeeping, of course.

 

[Plazorn]

Sony sure sucks at preventing jailbreaks and hacks.

 

[Mysi]

does that mean that there's a possibility of emulating the ps4 now ?

 

[jellybeangreen2]

does that mean that there's a possibility of emulating the ps4 now ?

Yeah, it’s called via a PS5.

 

[Mysi]

Yeah, it’s called via a PS5.

 

[kid sampson]

I just want to be able to launch my already installed retail games without inserting a disc or dumping and installing them again.