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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 to 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.

	FCKGW-RHQQ2-YXRKT-8TG6W-2B7Q8

	Windows XP PRO Corporate serial number S/N: Key: MQPWW-PGVKX-YPMKG-8DH3G-KC8PW
	windows xp home edition serial number S/N: 034634-262024-171505-828316-729010-413531-800424-400442
	Windows XP 64 serial number S/N: B2RBK-7KPT9-4JP6X-QQFWM-PJD6G
	Windows XP serial number S/N: K6C2K-KY62K-DQR84-RD4QV-QB74Q
	Windows XP Professional 64-bit Corporate Edition 5.2.3790.1830 serial number S/N: VCFQD-V9FX9-46WVH-K3CD4-4J3JM
	Microsoft Windows XP Professional SP2 serial number S/N: YY8F2-3CKVQ-RKTRG-6JMDR-9DTG6
	Windows XP Professional Service Pack 1 sp1 serial number S/N: F46YY - 2R8VQ - R8GMY - 926VK - 6BQ73
	Windows XP Pro serial number S/N: KBWR7-76BD8-J7MDQ-KKG&C-V9Q2J

	#include <stdio.h>
	#include <string.h>
	#include <assert.h>

	int hexdump(FILE fd, void const ptr, size_t length, int linelen, int split);

	int main(void)
	{
	FILE *fd;
	char buffer[100] = "0123456789ABCDEFabcdef0123456789AAAABBBBCCCCDDDDHello World\rTest-line\n";

	Rem run as administrator
	@echo on & @setlocal enableextensions
	@echo =========================
	@echo Turn off the time service
	net stop w32time
	@echo ======================================================================
	@echo Set the SNTP (Simple Network Time Protocol) source for the time server
	w32tm /config /syncfromflags:manual /manualpeerlist:"0.it.pool.ntp.org 1.it.pool.ntp.org 2.it.pool.ntp.org 3.it.pool.ntp.org"
	@echo =============================================
	@echo ... and then turn on the time service back on

	#!/bin/bash

	gdb -p "$1" -batch -ex 'set {short}$rip = 0x050f' -ex 'set $rax=231' -ex 'set $rdi=0' -ex 'cont'