30 lines
No EOL
1.7 KiB
Markdown
30 lines
No EOL
1.7 KiB
Markdown
# PS4 4.55 Kernel Exploit
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---
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## Summary
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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-piracy mechanisms or running homebrew. This exploit does include a loader that listens for payloads on port `9020` and will execute them upon receival.
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This bug was discovered by qwertyoruiopz, and can be found hosted on his website [here](http://crack.bargains/455/).
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## Patches Included
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The following patches are made by default in the kernel ROP chain:
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1) Disable kernel write protection
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2) Allow RWX (read-write-execute) memory mapping
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3) Syscall instruction allowed anywhere
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4) Dynamic Resolving (`sys_dynlib_dlsym`) allowed from any process
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4) Custom system call #11 (`kexec()`) to execute arbitrary code in kernel mode
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5) Allow unprivileged users to call `setuid(0)` successfully. Works as a status check, doubles as a privilege escalation.
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## Notes
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- Payloads from 4.05 should be fairly trivial to port unless they use hardcoded kernel offsets
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- I've built in a patch so the kernel exploit will only run once on the system, you can make additional patches via payloads.
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- A custom syscall is added (#11) to execute any RWX memory in kernel mode, this can be used to execute payloads that want to do fun things like jailbreaking and patching the kernel.
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## Contributors
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Massive credits to the following:
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- [qwertyoruiopz](https://twitter.com/qwertyoruiopz)
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- [Flatz](https://twitter.com/flat_z)
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- Anonymous
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Download: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/44196-v2.zip |