2fa bypass tool

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Yubico security advisory confirms 2FA bypass vulnerability.LightRocket via Getty Images Update, Jan. 18, 2025: This story, originally published Jan. 17, now includes further information about CVE-2025-23013 and clarification from Yubico regarding the severity rating.Two-factor authentication has increasingly become a security essential over recent years, so when news of anything that can bypass those 2FA protections breaks, it’s not something you can ignore. Be that the perpetual hack attack facing Google users, malicious Chrome extensions, or they Rockstar bypass kit impacting Microsoft users. Now, Yubico has thrown its hat into the 2FA bypass ring with a security advisory that has confirmed a bypass vulnerability in a software module used to support logging in on Linux or macOS using a YubiKey or other FIDO authenticators. Here’s what you need to know.ForbesCritical Hidden Email Hack Warning Issued For Gmail And Outlook UsersYubico 2FA Security Advisory YSA-2025-01Yubico is most likely the first name that comes to mind when you think about two-factor authentication hardware keys and other secure authentication solutions. And for good reason: it has been leading the market in the area of hardware key resources for about as long as I can remember, and I’ve been in the cybersecurity business for multiple decades. So, when Yubico issues a security advisory, I tend to take notice and if you are a Yubico customer, so should you.Yubico security advisory reference YSA-2025-01 relates to a partial authentication bypass in the pam-u2f pluggable authentication module software package that can be deployed to support YubiKey on macOS or Linux platforms.According to the advisory, pam-u2f packages prior to version 1.3.1 are susceptible to a vulnerability that can enable an authentication bypass in some configurations. “An attacker would require the ability to access the system as an unprivileged user,” Yubico explained, and, depending upon the configuration, “the attacker may also need to know the user’s password.”ForbesWarning As PayPal Cyberattacks Continue—What You Need To KnowBy Davey WinderYubico Details Example Attack Scenarios“A key differentiator between scenarios is the location of the authfile,” (the argument itself is called authfile) Yubico said, explaining that the path for the authfile is configured via an

Two-Factor Authentication (2FA) is a feature that provides an extra layer of security to help protect your account. This feature works with both Nexon Home (Nexon.com) and Launcher in combination with an Authenticator App and/or SMS. When 2FA is enabled, each time your log in you must also enter a 6-digit verification code.To learn more about 2FA, watch our video “How To Protect Your Nexon Account” on YouTube (see below).Important: To use 2FA you must log in to your Nexon account with an email address. Social logins bypass both 2FA and trusted device verification. If you do not have an email account, you can create one from your social link by setting a password for your Nexon account.Verification methodsBy default, all Nexon accounts have email verification set up for identity confirmation. You can add additional verification methods, which are listed below, to help make your account more secure.Authenticator: use your mobile phone or tablet with an Authenticator App of your choice, like Google Authenticator, to generate Authenticator codes.SMS: use your mobile phone to receive SMS codes via text message.Both Authenticator and SMS verification codes are valid for up to 30 seconds, after which the code expires. If you enter an expired code you will receive an “invalid code” error message.You can enable both verification methods and set one as the primary option used for log in. The secondary option is then available as an alternate method.Additionally, if using the Authenticator App, you can generate backup codes in case your 2FA device is unavailable.Bypassing 2FATo keep your account secure and provide a more convenient login experience, you can temporarily bypass 2FA security for 60 days by selecting any of the options listed below. Important: As bypassing 2FA negates your extra layer of security to an extent, use the options below only for your personal devices to help avoid potential unauthorized access to your account.Automatic loginIf you use Nexon Launcher, select the Login automatically in the future option. You are asked for your 2FA verification code, and then your next log in from the Launcher automatically bypasses both login credentials and 2FA verification.Note: Logging out or changing 2FA options resets the automatic login setting.Remember me/trusted deviceFrom either Nexon Home (Nexon.com) or Launcher, you can select the Remember this device option on the 2FA window during log in to add your device to your trusted devices list.Alternately, you can add your device or

Key TakeawaysSophisticated Phishing-as-a-Service Model: Rockstar 2FA uses advanced adversary-in-the-middle (AiTM) techniques to bypass multi-factor authentication (MFA) protections in Microsoft 365.Small Businesses Are Prime Targets: Limited resources and cybersecurity awareness make small and medium-sized businesses especially vulnerable to such attacks.MSPs Must Evolve Defense Strategies: The role of Managed Service Providers (MSPs) in combating advanced threats is more critical than ever, requiring proactive tools, training, and incident response.The Threat Landscape: What Is Rockstar 2FA?A recent discovery has exposed a new iteration of Phishing-as-a-Service (PhaaS) platforms called Rockstar 2FA. This campaign focuses on stealing credentials from Microsoft 365 (M365) by bypassing MFA protections through adversary-in-the-middle (AiTM) techniques. The platform is a subscription-based service marketed to cybercriminals across forums like Telegram and Mail.ru, offering advanced features such as:Session cookie harvesting to hijack active user sessionsCustomizable phishing templates mimicking trusted servicesAntibot features to avoid automated detection systemsRandomized source code and links to evade detection and FUD attachments Rockstar 2FA capitalizes on user trust in services like Microsoft 365, posing a significant risk for organizations that rely on this platform for communication and collaboration. Its accessibility to attackers, regardless of technical expertise, makes it a widespread and pressing concern.For more technical details, see the analysis by Trustwave: Rockstar 2FA PhaaS Campaign.How the Attack WorksAt the heart of the Rockstar 2FA campaign is its adversary-in-the-middle (AiTM) technique. Here’s how the attack unfolds:Phishing Email: The Attacker is sending an email using the templates of the Rockstar platform, such as: Document and file-sharing notifications, MFA lures, E-signature platform-themed messages and more. The campaign executed through several email delivery mechanisms, like compromised accounts, to conceal oneself behind a credible source and contain FUD links and attachments to bypass antispam detections.Antibot: Upon being redirected to the landing page, the user will encounter a Cloudflare Turnstile challenge – a free service that protects websites from bots. Threat actors now exploit to avoid automated analysis of their phishing pages.The AiTM Server: The server functions as both the phishing landing page, the credentials housing server and the proxy server. The phishing page mimics the brand’s sign-in page despite obfuscated HTML, forwarding those credentials to

..Modlishka..Modlishka is a powerful and flexible HTTP reverse proxy. It implements an entirely new and interesting approach of handling browser-based HTTP traffic flow, which allows it to transparently proxy multi-domain destination traffic, both TLS and non-TLS, over a single domain, without a requirement of installing any additional certificate on the client. What exactly does this mean? In short, it simply has a lot of potential, that can be used in many use case scenarios...From the security perspective, Modlishka can be currently used to:Support ethical phishing penetration tests with a transparent and automated reverse proxy component that has a universal 2FA “bypass” support.Wrap legacy websites with TLS layer, confuse crawler bots and automated scanners, etc.Modlishka was written as an attempt to overcome standard reverse proxy limitations and as a personal challenge to see what is possible with sufficient motivation and a bit of extra research time.The achieved results appeared to be very interesting and the tool was initially released and later updated with an aim to:Highlight currently used two factor authentication (2FA) scheme weaknesses, so adequate security solutions can be created and implemented by the industry.Support other projects that could benefit from a universal and transparent reverse proxy.Raise community awareness about modern phishing techniques and strategies and support penetration testers in their daily work.Modlishka was primarily written for security related tasks. Nevertheless, it can be helpful in other, non-security related, usage scenarios.FeaturesKey features of Modlishka include:General:Point-and-click HTTP and HTTPS reverse proxying of an arbitrary domain/s.Full control of "cross" origin TLS traffic flow from your users browsers (without a requirement of installing any additional certificate on the client).Easy and fast configuration through command line options and JSON configuration files.Pattern based JavaScript payload injection.Wrapping websites with an extra "security": TLS wrapping, authentication, relevant security headers, etc.Stripping websites of all encryption and security headers (back to 90's MITM style).Stateless design. Can be scaled up easily to handle an arbitrary amount of traffic - e.g. through a DNS load balancer.Can be extended easily with your ideas through modular plugins.Automatic test TLS certificate generation plugin for the proxy domain (requires a self-signed CA certificate)Written in Go, so it works basically on all platforms and architectures: Windows, OSX, Linux, BSD supported...Security related:Support for majority of 2FA authentication schemes (out of the box).Practical implementation of the "Client Domain Hooking" attack. Supported with a diagnostic plugin.User credential harvesting (with context based on URL parameter passed identifiers).Web panel plugin with a summary of automatically collected credentials and one-click user session impersonation module (proof-of-concept/beta).No website templates (just point Modlishka to the target domain - in most cases, it will be handled automatically without any additional manual configuration).Proxying In Action (2FA bypass)"A picture is worth a thousand words":Modlishka in action against an