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PS4 4.55 WebKit Exploit Documentation Write-up by SpecterDev
Since his 4.05 PS4 Exploit, related Documentation, release of the full 4.55 PS4 Jailbreak and 4.55 PS4 Holy Grail homebrew enabler today PlayStation 4 developer @SpecterDev made available via Twitter his 4.55 WebKit exploit write-up for the "setAttributeNodeNS()" bug so other scene devs and enthusiasts can learn from it. :geekxf2:

Here's an excerpt from the complete setAttributeNodeNS UAF Write-up.md file, to quote: Conclusion

For a seasoned webkit attacker, this bug is trivial to exploit. For non-seasoned ones such as myself however, working with WebKit to leverage a read/write primitive from WebCore heap corruption can be confusing and challenging.

I hope through this write-up that it can help other researchers new to webkit to understand a bit of the magic that happens behind webkit exploitation, as without understanding fundamental data structures such as JSObjects and JSValues, it can be difficult to make sense of what's happening.

This is why I focused the core of the write-up on going from heap corruption to obtaining a read/write primitive, and how type confusion with internal objects can be used to achieve it.

In the next section (yet to be published), we will cover the kernel exploit portion of the 4.55 jailbreak chain. While this WebKit exploit will work on 5.02 and lower, the kernel exploit will only work on firmware 4.55 and lower.

Credits
References
GTA V Native Caller and Menu Base Updated to PS4 4.55 by 2much4u
With the release of PS4 4.55 Homebrew Enabler yesterday, and following his PS4 GTA V Menu Base built on top of his GTA V Native Caller today PlayStation 4 developer @2much4u made available a compiled menu base version for those anxious to begin PS4 4.55 game modding followed by v5.05 OFW support! :coolxf2:

Download: gtavMenuBase455.bin (1.0 MB)

To quote from his Tweets via Twitter embedded below: GTA V native caller and menu base, including the tools necessary for game modding in general, are updated to 4.55.

Here is a compiled version of the menu base for those eager to start modding.

Also below is a recent PS4 4.05 GTA-V Mod Menu Tutorial / Overview from @MODDEDWARFARE on his YouTube Channel for those interested in learning how to install a GTA-V mod menu on a jailbroken PS4 console. :thumbsupxf2:

PS4 GTA-V Mod Menu Tutorial / Overview (4.05 Jailbreak)
Full debug settings offsets for 4.55
Code:
kernelBase[0x1B6D086] |= 0x14;
kernelBase[0x1B6D0A9] |= 0x3;
kernelBase[0x1B6D0AA] |= 0x1;
kernelBase[0x1B6D0C8] |= 0x1;
// Disable write protection
*(uint32_t*)&kernelBase[0x4D70F7] = 0;
*(uint32_t*)&kernelBase[0x4D7F81] = 0;
First Grand Theft Auto 5 (GTA5) Mod Menu For 4.55 (PS4 Jailbreak & Mods)
:arrow: Lamance 0.6 for 4.05 / 4.55 out now!

Download: Lamance06_AllInAll.zip (740.13 KB)...
PS4 Tool.apk: PlayStation 4 Payload Injector for Android by Reazer (aka ReazerDev)
Today PlayStation 4 developer @Reazer (aka ReazerDev) let us know on Twitter that he made available a PS4 Tool.apk with source code coming for Android owners to inject PlayStation 4 payloads alongside some updates below! ;)

Download: PS4ToolV2.apk (Latest Version) (8.3 MB) / GIT / PS4 Tool v2 GIT

Spoiler: Depreciated

To quote from his Tweets embedded below on the PS4 Tool APK Android application: PS4 Payload Injector for Android Devices!

Simply Download any Payload and put it in the PS4 Tool Folder on your Android Device. (Open the App once to get the Folder), and select it in the Dropdown. Enter your IP and click Inject!

And from the README.md: PS4 Tool v2

Download and Install the App from here: PS4ToolV2.apk

How To Use

Payload Sender

  • Go into Settings and type in your PS4's IP Address
  • Open an Exploit page on your PS4
  • Send the selected Payload
Fan Control
  • Go into Settings and type in your PS4's IP Address
  • Open an Exploit page on your PS4
  • Choose the temperature when your Fan should start spinning, by moving the slider
  • Click on Send
...
PS4 4.55 Holy Grail (PS4HEN) by M0rph3us1987, Playground Updates
Following the PS4Brew Full PS4 4.55 Jailbreak news earlier today, PlayStation 4 developer m0rph3us1987 has now released the PS4 4.55 Holy Grail ps4_455_holygrail.bin PS4HEN (PS4 Homebrew ENabler) payload with special thanks to flat_z which allows users to run PS4 Package (PKG) files of both backup games (as confirmed by @Donely, behnamzed, karloromeo, GrimDoe and Andrew Marques) and homebrew applications!

Download: ps4_455_holygrail.bin (68 KB) / ps4_455_holygrail.bin (Mirror) / usb_455_hen.zip (0.04 MB - USB Self-Host) via stooged / Enable_VR_455.zip / usb_455_vr_enable.zip (0.02 MB) / usb_455_vr_hen.zip / PS4 Linux Loader 4.55 /...
PS Plus Games for March 2018 and Additional Service Changes
Headlining March 2018's PS Plus free games lineup are Bloodborne and Ratchet & Clank, which will be available next week among the rest of the new content as detailed below. :smilexf2:

Here's James Hallahan of PlayStation Plus with some additional service changes and what else is coming to PS Plus in March, to quote:

Starting next year on March 8, 2019, the PS Plus monthly games lineup will focus on PS4 titles and no longer include PlayStation 3 and PlayStation Vita titles. This won’t affect any games you’ve already downloaded, or will download, prior to March 8, 2019.

Those games will still be part of your PS Plus games library as long as you remain a member. Your game saves and other benefits of PS Plus will also remain the same – the only change is that no new PS3 and PS Vita games will be added to the PS Plus monthly games lineup beyond March 8, 2019.

Many of our fans are playing on the PS4 platform, with the increasingly vast number of PS4s in homes around the world. We’ll continue to prioritize the benefits you receive through your PS Plus membership, such as online multiplayer, online game save storage, PS4 monthly games, and exclusive PS Store discounts across content and network services.

As a reminder, if you do not wish to continue your subscription, please be sure to cancel it by turning off auto-renewal in your account settings before March 8, 2019.

This month’s PlayStation Plus lineup also includes:
  • Legend of Kay, PS3
  • Mighty No. 9, PS3 (Cross Buy with PS4)
  • Claire: Extended Cut, PS Vita (Cross Buy with PS4)
  • Bombing Busters, PS Vita (Cross Buy with PS4)
There are plenty of new games and exclusive PS Store discounts to come for PS Plus members, and we look forward to sharing this with you in our ongoing monthly blog posts. As always, we thank you for your continued support.
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