PS4 Syscall Kernel Patch from 2much4u for Game Modifications

Following the PS4 IDPS / PSID Dump Code he helped @theorywrong with, today PlayStation 4 developer @2much4u shared a PS4 kernel patch that allows direct syscalls from processes which can be handy for modifying games.

Here are the details via some recent tweets from his Twitter feed:

To quote: PS4 kernel patch allowing direct syscalls from processes

*(uint16_t *)0xFFFFFFFF82616465 = 0x9090;
*(uint16_t *)0xFFFFFFFF82616471 = 0x9090;

Finally, @mete2221 recently started a thread on PS4 4.50 Working Webkit Exploits for those interested, if anyone wishes to lend a hand or contribute to it that would be much appreciated!

Thanks to @raedoob for the news tips in the PSXHAX Shoutbox!

 

[bombob]

So scene is unfolding. This is looking more legit than another news I know of. Lets see where that will lead.

 

[Samuze]

We are progressing slowly but surely, and we're getting closer, great exploit !

The comments above just don't add up, i mean who would care if you're the first or second or even last.

 

[moodyjohn]

last!

 

[BGMaxie]

Oh this looks like good progress but what exactly does this do? I've a generic idea only.

 

[3much5u]

Oh this looks like good progress but what exactly does this do? I've a generic idea only.

Game processes do not normally have permissions to directly make syscalls. This kernel patch allows them to do that. Syscalls in game processes are useful for a variety of reasons like mapping memory and resolving functions from modules.

 

[exploitking]

work for 4.50 tho?

 

[mcmrc1]

step by step uuuuh baaaaabaaaaaah