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The First PS4 Kernel Exploit: Adieu

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Re: The First PS4 Kernel Exploit: Adieu

#41

Post by KGIII »

ChristianBundy wrote: post #40
KGIII wrote: post #39

Earlier quoted context omitted.

I support IP rights, as a general rule. However, they sure get abused. I'm kind of annoyed about this, even though I have nothing to do with it. If you break my system, thanks for letting us know. It'd be great if we could pay you to help fix our system and make it more difficult to break in the future. I'd not take them to court. I'd try to hire them. Hell, I'd give them reward money - even if they didn't want to be…

Intellectual property is theft.

Sure, inasmuch as taking labor without payment is slavery.

Re: The First PS4 Kernel Exploit: Adieu

#42

Post by zbowling »

TazeTSchnitzel wrote: post #19
nkg wrote: post #14

Is it me or Sony has become good at protecting its software ? I remember a time when every new console would be hacked within the year it was released.

If anything the PS4 is a downgrade from the PS3 here. The PS3 ran everything in a hypervisor.

The hypervisor for the PS3 wasn't designed to be secure. It was reference hypervisor from IBM if I remember correctly and designed for scaling environments up and not security isolation. It was full of holes. At least FreeBSD starts out as battle tested verified OS of sorts unlike the PS3 Frenken-OS.

Re: The First PS4 Kernel Exploit: Adieu

#43

Post by grawlinson »

nkg wrote: post #33
nkg wrote: post #14

Is it me or Sony has become good at protecting its software ? I remember a time when every new console would be hacked within the year it was released.

Psx, PS2, Wii, PSP have been hacked to their bone, it was a great time because of the community it had created. All these people focused on finding exploits and sharing the most obscure techniques to restore a bricked device! I don't see this anymore. Maybe they are mining bitcoins or playing Candy crush.

The Vita was harder to 'break' than the PS4, apparently. It's only recently been pwned.

Re: The First PS4 Kernel Exploit: Adieu

#44

Post by wildmusings »

ChristianBundy wrote: post #40
KGIII wrote: post #39

Earlier quoted context omitted.

I support IP rights, as a general rule. However, they sure get abused. I'm kind of annoyed about this, even though I have nothing to do with it. If you break my system, thanks for letting us know. It'd be great if we could pay you to help fix our system and make it more difficult to break in the future. I'd not take them to court. I'd try to hire them. Hell, I'd give them reward money - even if they didn't want to be…

Intellectual property is theft.

Would you think so if you poured your soul into writing a book, only to have it copied and distributed without your permission, for someone else's profit?

Re: The First PS4 Kernel Exploit: Adieu

#45

Post by pjmlp »

ChristianBundy wrote: post #40
KGIII wrote: post #39

Earlier quoted context omitted.

I support IP rights, as a general rule. However, they sure get abused. I'm kind of annoyed about this, even though I have nothing to do with it. If you break my system, thanks for letting us know. It'd be great if we could pay you to help fix our system and make it more difficult to break in the future. I'd not take them to court. I'd try to hire them. Hell, I'd give them reward money - even if they didn't want to be…

Intellectual property is theft.

So everyone working on books, movies and computer games is a theft apparently.

Not everyone wants to give their work for free, dress in coloured cothles, sing about peace and love and grow tomatos in a community.

Re: The First PS4 Kernel Exploit: Adieu

#46

Post by Jonnax »

nkg wrote: post #33
nkg wrote: post #14

Is it me or Sony has become good at protecting its software ? I remember a time when every new console would be hacked within the year it was released.

Psx, PS2, Wii, PSP have been hacked to their bone, it was a great time because of the community it had created. All these people focused on finding exploits and sharing the most obscure techniques to restore a bricked device! I don't see this anymore. Maybe they are mining bitcoins or playing Candy crush.

In that time computing devices were rare.

Now everyone has a quite a powerful computer in their pocket.

If you want to make apps it's all there supported with a ton of documentation.

Re: The First PS4 Kernel Exploit: Adieu

#48

Post by tinus_hn »

TazeTSchnitzel wrote: post #19
nkg wrote: post #14

Is it me or Sony has become good at protecting its software ? I remember a time when every new console would be hacked within the year it was released.

If anything the PS4 is a downgrade from the PS3 here. The PS3 ran everything in a hypervisor.

PS3 for the most time allowed people to legitimately run an other operating system on it, so these was less of an incentive to build ‘jailbreaks’ and cracks.

Re: The First PS4 Kernel Exploit: Adieu

#49

Post by fenollp »

> However, this turns out to be impossible (as far as I know) because of a side effect of the ps4 page size being changed to 0x4000 bytes (from the normal of 0x1000). It appears that in order to change the page size globally, the ps4 kernel developers opted to directly change the related macros. One of the many changes resulting from this is that the smallest actual amount of memory which malloc may give back to a caller becomes 0x40 bytes. While this also results in tons of memory being completely wasted, it does serve to nullify certain exploitation techniques (likely completely by accident…).

This is pretty cool (and probably obvious to a lot of people) as a security technique. Could this be done for consumer OSes? 64 bytes as the smallest malloc-able size doesn't seem too bad for today's ultrabooks...

Re: The First PS4 Kernel Exploit: Adieu

#50

Post by Moter8 »

mackal wrote: post #26
mikewhy wrote: post #17

Earlier quoted context omitted.

PS3 was out for ~3 years before it was hacked.

It wasn't worth hacking the PS3 because of OtherOS. They removed it, it was hacked.

As far as I remember, as soon as it was hacked they removed OtherOS, not the other way around. This was like version 3.50 or something? Long time ago.
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