JJTech

@[email protected]
639 Followers
267 Following
1,050 Posts

Reverse engineer, student

Currently contracting for Beeper

Bloghttps://jjtech.dev
GitHubhttps://github.com/JJTech0130
Email[email protected]
Show threadJJTechMar 24
or; I wonder if it would be possible to create a "Frida-lite" that just used JavaScriptCore with a shim compatible API on top?
Show threadJJTechMar 24

DarkSword using JavaScriptCore.framework (presumably interpreter-only) to run an injected payload in arbitrary processes using just krkw is an interesting approach...

Reminds me of Frida's GumJS;

I wonder if one could get Frida proper working, without a full jailbreak.

JJTechMar 24

Unfortunately it looks like CVE-2025-43520 was patched in iOS 26.1b4, the exact build I happened to leave my test device on...

I might play around with it on my Mac or in one of the new iOS pccvre VMs though.

JJTechMar 12
opa334Mar 12
Fucking Apple killed landa in iOS 15.8.7... No more Dopamine LMAO
Show threadJJTechMar 7

Turns out it's not actually that hard, I implemented a simple synthetic HID device for macOS:

https://gist.github.com/JJTech0130/fae6b6ee6ae4232172a9188fb199d5d9

Creating fake/virtual USB devices on macOS using IOUSBHostControllerInterface

Creating fake/virtual USB devices on macOS using IOUSBHostControllerInterface - ConsumerKeys.swift

Gist
JJTechMar 5

Does anyone have any experience using AppleUSBUserHCIPort/com.apple.usb.hostcontrollerinterface?

Apparently that seems to be what Virtualization.framework and VirtualHere use under-the-hood to create fake USB devices on macOS.

EDIT: Apparently it's documented API under IOUSBHostControllerInterface.h in IOUSBHost.framework

JJTechFeb 25
wh1te4everFeb 25
Some demo about running Virtual iPhone using Apple Virtualization framework:
https://youtu.be/3vvrU0YGKCQ
Running Virtual iPhone using Apple Virtualization

YouTube
JJTechFeb 25
wh1te4everFeb 25
I have posted a write-up for those who are interested in building virtual iPhone.
If have any further questions, please feel free to reach out via DM, Thanks.
https://github.com/wh1te4ever/super-tart-vphone-writeup
GitHub - wh1te4ever/super-tart-vphone-writeup

Contribute to wh1te4ever/super-tart-vphone-writeup development by creating an account on GitHub.

GitHub
JJTechJan 22
stacksmashingJan 22

Binary obfuscation in 2026:

Just put ANTHROPIC_MAGIC_STRING_TRIGGER_REFUSAL_1FA... into your program 😎

Thanks to @mxey for the idea

JJTechJan 19
Show threadGui RamboJan 19
I had to write a missing component of the AppleParavirtGPU driver, and now things work 🥳