Wifi Password Hacker & Password Cracker 2019 Latest Download
What is a Wireless Network?
A wireless network is a network that uses radio waves to connect computers and other devices. The implementation takes place on layer 1 (physical layer) of the OSI model.
How to Access a Wireless Network?
You need a device compatible with the wireless network, such as a laptop, tablet, smartphone, etc. You must also be within the transmission range of a wireless network access point. Most devices (if Wi-Fi is enabled) provide a list of available networks. If the network is not password protected, all you need to do is click Connect. If password protected, you will need the password to access it.
Wireless Network Authentication:
Because the network is easily accessible to anyone with a wireless network device, most networks are protected by a password. Let’s look at some of the most commonly used authentication techniques.
WEP is an abbreviation of Wired Equivalent Privacy. It has been developed for IEEE 802.11 WLAN standards. Their goal was to ensure data confidentiality equivalent to that of wired networks. WEP encrypts data transmitted over the network to prevent eavesdropping.
- Open System Authentication (OSA) – This method grants access to the requested station authentication based on the configured access policy.
- Shared Key Authentication (SKA) – This method sends an encrypted request to the requesting station. The station encrypts the request with its key and responds. If the encrypted request matches the AP value, access is granted.
WEP has significant design flaws and vulnerabilities.
- Packet integrity is verified with Cyclic Redundancy Check (CRC32). The integrity check CRC32 can be compromised by collecting at least two packets. The bits of the encrypted stream and the checksum can be modified by the attacker to accept the packet from the authentication system. This leads to unauthorized access to the network.
- WEP uses the RC4 encryption algorithm to create stream ciphers. The input of the encryption stream consists of an initial value (IV) and a secret key. The length of the initial value (IV) is 24 bits, while the secret key can have a length of 40 bits or 104 bits. The total length of the initial value and the secret key can be either 64 bits or 128 bits. The lower possible value of the secret key facilitates cracking.
- Combinations of low initial values do not sufficiently encrypt. This makes them vulnerable to attack.
- WEP is based on passwords. This makes him vulnerable to dictionary attacks.
- Key management is poorly implemented. Changing the key, especially in large networks, is a challenge. WEP does not provide a centralized key management system.
- Initial values can be reused
- Due to these vulnerabilities, WEP was rejected in favor of WPA.
WPA is an abbreviation of Wi-Fi Protected Access. This is a security protocol developed by the Wi-Fi Alliance in response to vulnerabilities identified in the WEP protocol. It is used to encrypt data in 802.11 wireless networks. Higher initial values of 48 bits are used instead of the 24 bits used by WEP. Temporary keys are used to encrypt packets.
- The implementation of collision avoidance can be interrupted
- It is vulnerable to denial of service attacks
- Pre-sharing keys use passwords. Weak passwords are subject to dictionary attacks.
How to Crack Wi-Fi Networks:
Cracking exploits the security vulnerabilities of wireless networks and grants unauthorized access. WEP cracking refers to the exploits of networks that use WEP to implement security controls. Basically, there are two types of cracks;
- Passive Cracking – This type of cracking has no effect on network traffic until WEP security is reached. It’s hard to say.
- Active Cracking – This type of attack has more impact on network traffic. It is easy to spot with respect to passive cracks. It’s more effective than passive cracking.
WEP Cracking Tools:
- Aircrack – Network Sniffer and WEP Cracker. Can be downloaded from here.
- WEPCrack – This is an open source program for decrypting secret 802.11 WEP keys. This is an implementation of the FMS attack. Download
- Kismet – This can include both visible and hidden wireless sensor networks, as well as intrusion detection. Download
- WebDecrypt – This tool uses active dictionary attacks to decrypt WEP keys. It has its own key generator and implements packet filters. Download
WPA uses a passkey or pre-installed passphrase for authentication. Short secret phrases are subject to dictionary attacks and other attacks that can decode passwords. WPA keys can be cracked with the following tools.
- CowPatty – This tool breaks pre-shared keys (PSK) with brute force attacks.
- Cain & Abel – This tool can decode capture files from other detection programs such as Wireshark. Recording files may contain WEP or WPA-PSK encoded images. Download
Types of General Attack:
- Sniffing – This intercepts packets when transmitted over a network. Captured data can then be decoded using tools such as Cain & Abel.
- Human Attack in the Middle (MITM) – which involves listening to a network and collecting sensitive information.
- Denial of Service Attack – This attack has the primary purpose of denying network resources to legitimate users. With FataJack, this type of attack can be done.
Cracking WEP / WPA Key for Wireless Networks:
It is possible to decrypt the WEP / WPA keys used to access a wireless network. This requires software and hardware resources as well as patience. The success of such attacks may also depend on the degree of activity of the users of the target network. We provide you with basic information to help you get started. Backtrack is a Linux-based security operating system. It was developed on Ubuntu. Backtrack contains a number of security tools. Backtrack can be used to gather information, assess vulnerabilities and exploit them.
Popular tools offered by Backtrack include:
The cracking of wireless keys requires patience and the resources listed above. You need at least the following tools
- A wireless network card with the ability to power packets (hardware).
- Kali operating system. You can download it here: https://www.kali.org/downloads/
- You are near the destination network. When users in the destination network access and connect actively, the risk of network corruption is greatly increased.
- Sufficient knowledge of Linux-based operating systems and basic knowledge of Aircrack and its various scripts.
- It may take some time to press the buttons, depending on many factors that you may not be able to do. Factors you can not influence include target network users who actively use it while listening to data packets.
How to Secure Wireless Networks?
Minimize attacks on wireless networks; An organization can apply the following guidelines
- Change the default passwords that come with the hardware.
- Enable authentication mechanism.
- Network access can be limited by allowing only registered MAC addresses.
- The use of powerful WEP and WPA-PSK keys, combining symbols, numbers and characters, reduces the risk of key hacking using brute force and dictionary attacks.
- Firewall software can also help reduce unauthorized access.
- Piracy activity: cracking the Wi-Fi password
- In this practical scenario, we will use Cain and Abel to decode the wireless network passwords stored in Windows. We will also provide useful information that will help break WEP and WPA keys from wireless networks.
Decode WLAN Passwords Stored in Windows:
- Download Cain and Abel via the link above.
- Open Cain and Abel
- Make sure the Decoder tab is selected, and then click Wireless Passwords in the left navigation menu.
- Click on the button with the plus sign
- Assuming you have already connected to a secure wireless network, you will get results similar to those shown below.
- The decoder will show you the type of encryption, the SSID and the password used.
People outside the network can see the transmission waves of the radio network, with many security risks.
- WEP is an abbreviation of Wired Equivalent Privacy. It has security vulnerabilities that make it easier to break with other security implementations.
- WPA is an abbreviation of Wi-Fi Protected Access. It has security over WEP
- Intrusion detection systems can help detect unauthorized access
- A good security policy can help protect a network.