Following recent
research from PlayStation 4 developers into the
4.01 PS4 Jailbreak by
Chaitin Tech, today the Chinese PS4 Jailbreaking Team have released an ROP (Return Oriented Programming) tool on their
Pro GIT to aid developers in exploiting the PlayStation 4.
Download:
pro-master.zip /
GIT
PSXHAX Moderator
@Centrino points out the GIT work is incomplete, referencing line 41 meaning it only contains partial information and nothing can be done with it by end-users just yet.
In other words, although
Chaitin Tech are not teasing, they also are not spoon feeding (giving away their full exploit).
Here is a snippet from #ps4dev on iRC via
@Fimo for those interested:
[rck`d] the nonsecure browser has no jit, only the secure browser now (used for PSN store, etc) has JIT
[rck`d] Since some version, the internal browser is compiled WITHOUT jit support, and sys_jitshm_xxx seems to be disabled for unprivileged process

Everyone can draw their own conclusions, but thus far it wouldn't surprise me if the Chinese Team is just a 'smoke and mirrors' scheme as dongle douchbags start re-DRMing the exploit to profit off PS4 sceners... then when people whine they'll direct them to this
GIT of incomplete code as a 'free' alternative to their useless 'product' but hopefully I'm mistaken.
Anyhow, to quote from the
README.md:
PRO: PROgramming ROP like a PRO
This is a crappy tool used in our private PS4 jailbreak. Since some version, the internal browser is compiled WITHOUT jit support, and sys_jitshm_xxx seems to be disabled for unprivileged process. We have to write the kernel exploitation in ROP, like what has been done in
HENKaku jailbreak.
Build