PS4Brew 4.55 Full PS4 Jailbreak, 4.55 Debug Settings Payload Ports

Since the PS4 4.55 Kernel Exploit release followed by the PS4 5.01 WebKit Exploit, PlayStation 4 developer @SpecterDev made available on Twitter a fully implemented Cryptogenic PS4 4.55 Kernel Exploit akin to his previous one in that it doesn't contain code related to defeating anti-backups mechanisms... meaning most should take heed of @flatz's advice on Twitter and hold off updating from 4.05 to 4.55 OFW if you lack the necessary skills to port payloads or wait for other forks to surface as in 4.05 first before updating.

According to a screenshot (below) from @Mathieulh on Twitter, PS4 developer m0rph3us1987 shared a ps4_455_holygrail.bin (67.7 KB) private payload containing flat_z's Debug PKG and FSELF code which Rebug developer @Joonie replied to on Twitter with the file's MD5 hash of 38F5E677A543EF93FB9A75096F983F89 for those on the hunt... good luck!

In the midst of all the PlayStation 4 scene excitement today, PS4 developer qwertyoruiopz still managed to release a PS4Brew full 4.55 PS4 jailbreak followed by a bugfix update in 4.55 PS4 jailbreak v2 with some changes detailed.

@Andrew Marques let us know on Twitter that he tested a debug_settings.bin (16.2 KB) 4.55 port done by @2much4u with some enableWebBrowser455.bin (16 KB) and fullDebugSettings455.bin updates (REMINDER: DON'T GO INTO IDU MODE) via Twitter and video footage below.

Finally, Mikeads points out that PS4 developer @Al Azif earlier today changed 4.05 refs to 4.55 in preparation for PS4 Exploit Host updates which should now support 4.55 in this ps4-exploit-host.zip (4.81 MB) build... so to reiterate from CelesteBlue and Mathieulh, give scene devs time to port 4.05 apps and payloads to 4.55 before updating from 4.05 OFW to 4.55 Firmware unless you possess the skills to do it all on your own as nobody knows how long it will be before things like PS4HEN will be publicly available for 4.55 owners.

To quote from the README.md: PS4 4.55 Kernel Exploit

Summary

In this project you will find a full implementation of the "bpf" kernel exploit for the PlayStation 4 on 4.55. It will allow you to run arbitrary code as kernel, to allow jailbreaking and kernel-level modifications to the system. This release however, does not contain any code related to defeating anti-backups mechanisms or running homebrew. This exploit does include a loader that listens for payloads on port 9020 and will execute them upon receival.

This bug was discovered by qwertyoruiopz, and can be found hosted on his website here.

Patches Included

The following patches are made by default in the kernel ROP chain:

1. Disable kernel write protection
2. Allow RWX (read-write-execute) memory mapping
3. Syscall instruction allowed anywhere
4. Custom system call #11 (kexec()) to execute arbitrary code in kernel mode
5. Allow unprivileged users to call setuid(0) successfully. Works as a status check, doubles as a privilege escalation.

Notes

• Early stages, so no payloads yet, I may provide a debug menu payload later on in the day.

Contributors

Massive credits to the following:

• qwertyoruiopz
• Flatz
• Anonymous

How to migrate from 4.05 to 4.55 OFW for those using PS4 Exploit Host quick guide by Fimo:

1. Download 4.55 retail OFW: https://darthsternie.net/index.php/ps4-firmwares/
2. Save it to your exfat32 usb HD: PS4/UPDATE/PS4UPDATE.PUP
3. Plug the HD on the right port of your PS4, on your PS4 go to settings, upgrade your 4.05 FW
4. On your PC, delete your old ps4-exploit-host and save the new one v0.4.0.1
5. On your PC, run ps4-exploit-host.exe
6. Go back to your PS4, settings/guide, run the 4.55 HEN exploit = done !

Full PS4 4.55 New Jailbreak Setup Tutorial

Cheers to @B7U3 C50SS, @Chaos Kid and @Wultra in the PSXHAX Shoutbox for the news tips today!

 

[ossayossay78]

does it mean that currently 4.05 fake pkgs are not compatible with 4.55 exploit?

 

[dyceast]

Wow Just Wow !!!

 

[CloudStrife777]

You must wait on all 4.05 porting payload's to 4.55.

 

[Havok10]

4.05 packages will work with 4.55 firmware. That should be fine.

But all installed fpkgs will be deleted upon upgrade unless you backup the ps4 database first. Then have to restore by FTP.

 

[seanp2500]

short answer upgrade to 4.55 and wait. It's what is best for you.

This is one method. I would actually just use a large usb formatted to exfat and backup your data using the method I show here:

It's a toss up to me which would be faster but for a large collection I rather let the ps4 do the backing up but ftp is def an option. I think there will be no loss of data just doing a regular update to 4.55. Not sure how tested this is. Are you thinking that going to 4.55 using the smaller update will not be allowed?

A re initialization would be required with the recovery copy? I personally think the ps4 should allow this and leave data intact then just run hen and poof backups should work again. But this is of course conjecture.

 

[dyceast]

Now I need to find me a PS4 PRO with a firmware lower then 4.55 ! Cannot Wait.

 

[MohammadBigBoss]

It is possible to run vr on 4.55 as it was running on 4.05

 

[looka123]

GREAT news , B!G thx

 

[diabloddb]

the games for 4.05 work on 4.55

 

[CloudStrife777]

Yeah of course it's possible. The vr payload must only ported to 4.55 and then works vr on 4.55.