#JavaScriptCore

One of our favorite #debugging technologies comes from @mozilla, so this week we wanted to help highlight an amazing project. Part three of our #Pwn2Own series makes use of timeless debugging to root cause an exploitable race condition in #JavaScriptCore:

New write-up with @GenericCoding on pois0nSword, our iOS 26.1 port of DarkSword: bypassing PAC to reach arbitrary native calls from a WebKit renderer R/W, by making dyld's own loader do the write. #WebKit #JavaScriptCore #iOS #exploitdev

Vulnerability weaponization is the most frequently discussed topic of the #exploit development lifecycle. Here's our take on weaponizing a #JavaScriptCore vulnerability from the ground up: #Pwn2Own part four

Been exploring WebKit/JSC exploitation and wrote up a step-by-step walkthrough - from a caged OOB bug to cage-free arbitrary R/W with diagrams + a lab you can build. #WebKit #JavaScriptCore #BrowserExploitation #exploitdev #pwn

🛠 WebKitGTK+ development release 2.21.1 is now available! 👉 We are moving to a new, GLib-based API for JavaScriptCore and deprecating most of the DOM bindings API. Developers, please test and let us know what you think! 📜 Release notes:

The new JSC API in 2.21.x should make it much more convenient to interact with the JavaScript world from your C/C++ code — or from any other languages supported through GObject-Introspection 🙌. Lack of introspection support was one of the shortcomings of the old API.

The documentation for the new GLib-based #JavaScriptCore API we are introducing in the 2.21.x development releases is now available in our website, and should be fully GObject-Introspectable: 🛠

Our next event (2022-11-24, 1900 CET ONLINE (#Zoom), @ctietze: "Make your app extensible with #JavaScriptCore"!

WebAssembly: Wasmer 3.3 bringt Unterstützung von JavaScriptCore #Backend #JavaScriptCore

اگه تا حالا از #Phrack مقاله نخوندید، یه نگاه به این مقاله بندازید و با #Phrack آشنا بشید، بد نیست: Attacking JavaScript Engines: A case study of #JavaScriptCore and #CVE_2016_4622

#phrack "Attacking JavaScript Engines: A case study of #JavaScriptCore and #CVE-2016-4622" by @5aelo

🚀"Bun speeds things up by utilizing the JavaScriptCore engine, while Node.js relies on the JavaScript V8 engine. JavaScriptCore is optimized for quicker startup, making Bun a great choice for faster performance. 💨 #NodeJS #JavaScriptCore #Bun #100daysofcoding"

At @igalia we not only do a lot of feature development on JSC 64bits but also on 32bits (ARMv7 and MIPSel). Here's a brief tour of the implementation of the for-of intrinsic for JSC 32bit that landed a few months ago: #webkit #javascriptcore #javascript

Safari, Hold Still for NaN Minutes @sherl0ck__ @n30m1nd @XI_Research #VulnerabilityAnalysis #JavaScriptCore #ASLR #Safari

Use #zerodeps libs w/o hassle in your #webworker or #javascriptcore projects! This includes #reactnative and Apple TV with #tvOS/#tvml apps.

地道に息の長い JavaScriptCore の本だったりするのですけれど、それに主に Promise についてを大きく追記してボリュームアップした電子版をリリースしました。 #JavaScriptCore

What if @Nodejs used @mozilla's @SpiderMonkeyJS instead of Chrome's @v8js? 🤯🔥 🧵/1 #javascript #bun #deno #nodejs #jsruntime #tutorial #codechallenge #100daysofcode #diy #advancedjs #gitpod

One of the best videos I've ever recorded is the one I teach how to recreate Node.js from Scratch and it has reached more than 100K people around the globe🥳 I have researched a lot about the main components used in the original project such as Event Loop, V8, and C++ layers /2

If we compare @Nodejs with other competitors such as #Bun and @deno_land we can see a lot of similarities and good practices Whereas Node.js and Deno use V8 Bun uses #JavaScriptCore to execute JavaScript code Well... this raises questions. /3

Don’t we all like to have the flexibility to follow any pattern for naming exported Swift API without limiting us to predefined conventions? Luckily, there is a different way of doing it: #functions #JavaScriptCore #JSExportAs #selectors #Swift #ios

REMIND/TONITE (1900 CET ONLINE @ #Zoom), @ctietze: "Make your app extensible with #JavaScriptCore"!

The first is always special - My first task as an Igalian and WebKit contributor was to refactor register information in the JSC backend. Happy to say the bird has landed: #igalia #webkit #javascriptcore

The #NativeScript team is working on total revamp of the #iOS runtime. The goal is to use the V8 engine instead of #JavaScriptCore. Several months ago the team shipped an alpha version of this runtime and now it’s time to announce the next iteration.

Running #JavaScript in an #iOS application with #JavaScriptCore