Brandon Asuncion brandonasuncion

Exporting your 2FA tokens from Authy to transfer them into another 2FA application

IMPORTANT - Update regarding deprecation of Authy desktop apps

Past August 2024, Authy stopped supported the desktop version of their apps:
See Authy is shutting down its desktop app | The 2FA app Authy will only be available on Android and iOS starting in August for details.

And indeed, after a while, Authy changed something in their backend which now prevents the old desktop app from logging in. If you are already logged in, then you are in luck, and you can follow the instructions below to export your tokens.

If you are not logged in anymore, but can find a backup of the necessary files, then restore those files, and re-install Authy 2.2.3 following the instructions below, and it should work as expected.

Calling `alert` from WebAssembly (WASM)

This very simple and minimal tutorial documents in a few easy steps how to play with WebAssembly (WASM) and get first results within minutes.

While the code below is mostly useless, it will show, how to call the alert function from within a WASM file and thus demonstrate how to import and export DOM objects.

Of course, this exercise has no real use. It is just meant to show, that getting started with WASM isn't hard. And there is no need for a complex build-chain, tons of tools or a dedicated VMs. Just use a browser, one online tool and that's it.

And Now?

Option 1: Command-line download extension as zip and extract

extension_id=jifpbeccnghkjeaalbbjmodiffmgedin   # change this ID
curl -L -o "$extension_id.zip" "https://clients2.google.com/service/update2/crx?response=redirect&os=mac&arch=x86-64&nacl_arch=x86-64&prod=chromecrx&prodchannel=stable&prodversion=44.0.2403.130&x=id%3D$extension_id%26uc" 
unzip -d "$extension_id-source" "$extension_id.zip"

Thx to crxviewer for the magic download URL.

	void callEntryPointOfImage(char path, int argc, char *argv)
	{
	void *handle;
	int (binary_main)(int binary_argc, char *binary_argv);
	char *error;
	int err = 0;

	printf("Loading %s…\n", path);

	handle = dlopen (path, RTLD_LAZY);

	import VideoToolbox
	import AVFoundation

	private var __canHWAVC: Bool = false
	private var __tokenHWAVC: dispatch_once_t = 0

	public protocol NYXAVCEncoderDelegate : class
	{
	func didEncodeFrame(frame: CMSampleBuffer)
	func didFailToEncodeFrame()

	# This is a very simple Python 2.7 implementation of the Information Set Monte Carlo Tree Search algorithm.
	# The function ISMCTS(rootstate, itermax, verbose = False) is towards the bottom of the code.
	# It aims to have the clearest and simplest possible code, and for the sake of clarity, the code
	# is orders of magnitude less efficient than it could be made, particularly by using a
	# state.GetRandomMove() or state.DoRandomRollout() function.
	#
	# An example GameState classes for Knockout Whist is included to give some idea of how you
	# can write your own GameState to use ISMCTS in your hidden information game.
	#
	# Written by Peter Cowling, Edward Powley, Daniel Whitehouse (University of York, UK) September 2012 - August 2013.

	//
	// NSImageExtensions.swift
	//

	import Cocoa

	extension NSImage {

	/// The height of the image.
	var height: CGFloat {

	NSString *const PSPDFApplicationDidReceiveMemoryWarningNotification = @"PSPDFApplicationDidReceiveMemoryWarningNotification";

	// Test with sudo memory_pressure -l critical. Don't forget to re-set afterwards!
	__attribute__((constructor)) static void PSPDFInstallLowMemoryNotificationWarningMac(void) {
	static dispatch_source_t source;
	static dispatch_once_t onceToken;
	dispatch_once(&onceToken, ^{
	source = dispatch_source_create(DISPATCH_SOURCE_TYPE_MEMORYPRESSURE, 0, DISPATCH_MEMORYPRESSURE_WARN\|DISPATCH_MEMORYPRESSURE_CRITICAL, dispatch_get_main_queue());
	dispatch_source_set_event_handler(source, ^{
	dispatch_source_memorypressure_flags_t pressureLevel = dispatch_source_get_data(source);