How to check for vulnerabilities and hack an ASUS Wi-Fi router

The question of how to access someone else's Wi-Fi network often arises from a desire to test the reliability of your own connection or recover a forgotten key. However, it's important to set boundaries: unauthorized access to someone else's network is illegal and punishable by law. In this article, we'll discuss methods for educational purposes only, so you can understand how vulnerable your router is. ASUS, and fix security holes.

Modern wireless encryption standards offer a high level of protection, but human error and outdated settings often undermine them. Many users still use factory passwords or simple combinations that are easily brute-forced. Understanding how attacks work Wi-Fi networks will help you configure your router so that no neighbor can connect to your internet without permission.

In this guide, we'll explore the technical aspects of protocol vulnerabilities, methods for restoring access to your own equipment, and ways to strengthen security. You'll learn what tools cybersecurity specialists use to audit networks, and why the default administrator password is the first thing you should change after purchasing a device.

Analysis of vulnerabilities in WPA2 and WPA3 encryption protocols

Wireless network security directly depends on the encryption protocol used. For a long time, the de facto standard was WPA2, which, despite its prevalence, has known vulnerabilities. The most well-known of these is the KRACK (Key Reinstallation Attack), which allows data transmitted between the client and the router to be intercepted unless additional security measures are used.

A more modern standard WPA3 was developed specifically to address the shortcomings of its predecessor. It uses an improved SAE (Simultaneous Authentication of Equals) handshake protocol, which makes offline dictionary attacks impossible in real time. If your ASUS router supports this mode, enabling it is a priority.

⚠️ Warning: Using outdated encryption protocols like WEP or WPA/TKIP leaves your network vulnerable to hacking in minutes. Check your router's security settings.

Testing encryption strength often involves attempting to intercept the handshake between the device and the access point. This is a four-step authentication process during which encryption keys are generated. If an attacker manages to capture this data packet, they can attempt to brute-force the password offline using powerful computing resources.

For ASUS router owners, it's important to understand that even when using WPA2, password complexity is critical. Short dictionary passwords can be cracked instantly, while a long phrase of 15+ characters with special characters could take millennia to crack using brute-force methods at the current level of technology.

Using the WPS function to restore access

Technology WPS (Wi-Fi Protected Setup) was created to simplify connecting devices to the network without entering long passwords. However, this feature has become one of the biggest security holes in home routers. WPS relies on a PIN code consisting of only 8 digits, making it extremely vulnerable to brute-force attacks.

The WPS attack is possible because the PIN is verified in two parts. First, the first four digits are checked, then the next three, and the last digit is a checksum. This reduces the number of possible combinations from 100 million to approximately 11,000, allowing specialized utilities such as Reaver or Bully, pick up the code in a few hours or even minutes.

📊 Do you use the WPS button to connect?
Yes, all the time.
Sometimes, for guests
No, the function is disabled.
I don't know where it is

If you're trying to regain access to your network and have forgotten the password, but the WPS function on your ASUS router is active, you can legally use this method. The device often has a sticker with a PIN code, or it can be found in the documentation. Entering this code in the Wi-Fi client settings will allow you to connect without knowing the main network password.

From a security standpoint, having WPS enabled is a security risk. Even if you've disabled it in the web interface, some router models may still have it enabled at the firmware level. The only reliable way to protect yourself is to completely disable WPS via the console or update the firmware to a version that allows you to effectively disable it.

Methods for password cracking using console and utilities

To conduct security audits, specialists use Linux-based operating systems such as Kali Linux or Parrot OSThese distributions contain a set of pre-installed penetration testing tools. The primary interface for working with wireless networks is a network card that supports monitor mode.

The first step in the analysis process is to put the card into monitor mode. This allows the sniffer (traffic interception program) to capture all data packets in the air, not just those addressed to your device. The command to enable this mode in the terminal is as follows:

airmon-ng start wlan0

After activating the monitor mode, the airwaves are scanned to find the target network. The utility airodump-ng Displays a list of all available access points, their channels, encryption types, and the number of connected clients. Your task is to identify the BSSID (MAC address) of the ASUS router you plan to test.

☑️ Preparing for a network audit

Completed: 0 / 4

The key to attacking WPA2 is hijacking the four-way handshake. This is often accomplished through a deauthentication method: an attacker sends a control packet to the client, forcibly disconnecting it from the router. The device automatically attempts to reconnect, at which point the key exchange occurs, which is intercepted by the attacker.

The resulting handshake file (.cap or .hccapx) is then subjected to an offline attack. This involves using powerful video cards and word databases (dictionaries) containing millions of common passwords. The speed of the brute-force attack depends on the password complexity and the hardware power.

Configuring your ASUS router for maximum security

After considering the attack methods, it's time to move on to defense. The ASUS router interface, known as ASUSWRT, provides flexible security settings. The first step is to change the default password for the admin panel. The default login credentials (often admin/admin) are known to everyone and are the first target for bots.

In the section Wireless Network -> Professional All unnecessary features should be disabled. This includes disabling WPS, as mentioned earlier, and limiting the network's range if possible. Hiding the SSID (network name) is also recommended. While this isn't foolproof, it does reduce the network's visibility to passersby.

Setting parameter Recommended value Security Impact Level
Encryption mode WPA2-Personal + WPA3-Personal High
WPS Disabled Critical
Administrator password Complex, unique Critical
Remote access (WAN) Disabled High
Hiding the SSID Included (optional) Short

Don't forget to update your router firmware regularly. ASUS periodically releases patches to fix software vulnerabilities. Automatic updates can be configured in the "Settings" section. Administration -> System UpdateThis ensures that your router is protected from known exploits.

Another important measure is MAC address filtering. While MAC addresses can be spoofed, this creates an additional barrier for non-technical users. You can create a whitelist of devices allowed to connect and block all other connection attempts.

What is a guest network and why is it needed?

A guest network creates an isolated Wi-Fi segment. Guests can use the internet but have no access to your local files, printers, or router settings. This is ideal for temporary access.

Recovering access to a forgotten password

If your interest in "how to hack an ASUS WiFi" is simply to regain access to your own network if you've forgotten the password, there are legal and simple methods. The most reliable of these is physical access to the device. On the back of an ASUS router, there's usually a sticker with the factory Wi-Fi password (if it hasn't been changed).

If the password has been changed and forgotten, the only option left is to reset it to factory settings. To do this, locate the button on the router while it's turned on. ResetIt may be recessed into the housing, so you'll need a paperclip or needle to press it. Hold the button for 10-15 seconds until the indicators flash.

⚠️ Note: Resetting your settings will erase all your configurations, including provider settings (PPPoE, L2TP), network names, and passwords. Be prepared to reset your internet settings.

An alternative method is to connect via cable. If you have a computer that has previously connected to the router via LAN cable and saved the password, you can view it in Windows settings. Go to Control Panel -> Network and Internet -> Network and Sharing Center, select the wireless network properties and in the "Security" tab check the "Show entered characters" box.

You can also try logging into the router's web interface. If you haven't changed the administrator password, try the standard password combinations: admin/admin or admin/password. Successful login will allow you to view or change the Wi-Fi password in the corresponding menu section without resetting the settings.

Legal aspects and liability

It's important to clearly understand the legal consequences of your actions in the digital space. In the Russian Federation, as in many other countries, unauthorized access to computer information protected by law (Article 272 of the Russian Criminal Code) is a criminal offense. In the context of Wi-Fi, "protected information" refers to a network to which access is restricted by a password.

Even if you haven't stolen money or damaged data, the mere act of connecting to someone else's network without the owner's permission can be considered a violation. ISPs log the MAC addresses of connected devices, and if the router owner complains or suspicious activity (spam, attacks from your IP) is detected, the police can contact you through the ISP.

Use of the knowledge gained from this article should be limited to testing your own equipment or equipment for which you have written permission from the owner. Ethical hacking (white hat) requires working strictly within the law and contractually binding terms.

Is it possible to hack Wi-Fi from a phone?

Technically, there are Android apps that can brute-force passwords or connect via WPS. However, the effectiveness of such methods on modern ASUS routers is extremely low. Serious analysis requires specialized hardware and a Linux operating system.

What to do if your neighbors are stealing your internet?

Go to your router settings (Network Map or Status section) and view the list of connected clients. If you see an unfamiliar device, change the Wi-Fi password and enable MAC address filtering. This will instantly block all unauthorized access.

Does the number of connected devices affect the speed?

Yes, the bandwidth is shared among all active users. Furthermore, older devices can slow down the entire network if the router is forced to switch to lower speed standards for compatibility.

Is it safe to use public Wi-Fi networks?

No, public networks do not encrypt traffic between you and the router. For security, use a VPN, which will create a secure tunnel and hide your data from the network owner and potential hackers.