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jkpatch

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PlayStation 4 Jailbreak Kernel Patches

// repository documentation

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# Jailbreak Kernel Patches

### Features

- Jailbreak
- Sandbox escape
- Debug settings
- Enable UART
- RPC server
- RPC client in C#

I use the standard fake pkg keys, created by flatz.

### General Notes
**Only for 5.05 Jailbroken PlayStation 4 consoles!**

The main jkpatch payload utilizes a port of CTurt's payload sdk. Change the [Makefile](payload/Makefile) to have `LIBPS4` point to the ps4-payload-sdk directory on your machine. I could have it referenced from the home directory but meh...
```makefile
# change this to point to your ps4-payload-sdk directory
LIBPS4	:=	/home/John/ps4-payload-sdk/libPS4
```

If you decide to edit the `resolve` code in the kernel payload, make sure you do not mess with...
```c
void resolve(uint64_t kernbase);
```
... as it is called from `crt0.s`. And changing this will produce errors.

See other branches for other kernel support. I will support latest publically exploited firmware on main branch.

### RPC Quickstart

See either [Example.cs](librpc/Example.cs) or look at the [RPC documentation](librpc/jkpatch.pdf).

You can read/write memory, call functions, read/write kernel memory, and even load elfs.

[Here](https://www.youtube.com/watch?v=ieQPY4feBZo) is a cool example of an elf loaded into COD Ghosts (forge mod made by me!) You can download the source code to the forge mod [here](http://www.mediafire.com/file/v2m6513km68vmpd/forge.zip). Have fun!

---

Thank you to ChendoChap, idc, zecoxao, hitodama, osdev.org, and anyone else I forgot!

**golden <3**

jkpatch

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