easside-ng

easside-ng -i <interface> [-s <ap_mac>] [-m <client_mac>] [-n <num_requests>] [-r <replay_file>] [-v] [-h]

-i <interface>
    Specifies the wireless interface to use, which must be in monitor mode (e.g., wlan0mon).

-s <ap_mac>
    Sets the MAC address of the target Access Point. This is typically discovered using airodump-ng.

-m <client_mac>
    Sets the MAC address to be used by easside-ng to spoof a client. Can be an arbitrary MAC address.

-n <num_requests>
    Specifies the number of ARP requests (or similar packets) to send to the AP to generate IVs. A higher number increases the chance of success but also network noise.

-r <replay_file>
    Optional. Saves the captured packets (containing IVs) to a .cap file for later analysis or cracking with aircrack-ng.

-v
    Enables verbose output, providing more detailed information about the operation.

-h
    Displays the help message and exits.

The easside-ng command is a specialized tool within the aircrack-ng suite, designed for performing a specific type of WEP (Wired Equivalent Privacy) client-side attack. Its primary purpose is to recover WEP keys from an Access Point (AP) without requiring an associated client. This is achieved by implementing an attack, often referred to as a 'Caffe Latte' attack, where easside-ng spoofs a client and sends specially crafted packets to the AP. The AP, in response, generates ARP requests or other packets, which easside-ng captures. These captured packets, containing Initialization Vectors (IVs), can then be used by aircrack-ng to crack the WEP key.

While WEP is an outdated and insecure encryption standard, easside-ng remains a historical example of how vulnerabilities in WEP could be exploited. It requires a wireless network adapter capable of monitor mode and packet injection. Users typically set their wireless card to monitor mode using airmon-ng before employing easside-ng.

easside-ng is designed for WEP networks, an obsolete and highly insecure encryption standard. Its use on modern WPA/WPA2/WPA3 networks is not applicable.
Successful execution requires a wireless adapter capable of monitor mode and packet injection.
Legal implications: Always ensure you have explicit permission before performing security testing on any network.

The 'Caffe Latte' attack, implemented by easside-ng, exploits a vulnerability in how some Access Points handle ARP requests. The attacker (easside-ng) sends a specially crafted ARP request to the AP, spoofing a non-existent client. The AP, attempting to resolve the ARP, generates an ARP reply packet (which is encrypted with the WEP key) and broadcasts it. By capturing these replies, the attacker collects sufficient IVs to then crack the WEP key using aircrack-ng. A key characteristic of this attack is that it does not require an actual client to be associated with the target AP, making it a powerful method for WEP key recovery in certain scenarios.

easside-ng is a component of the comprehensive aircrack-ng suite, which evolved from the original aircrack project. It was developed to specifically address WEP client-side attacks, particularly the 'Caffe Latte' attack, which became prominent in the mid-2000s. As WEP became increasingly deprecated in favor of more robust encryption standards like WPA, the direct utility of tools like easside-ng diminished. However, it remains valuable for understanding historical wireless security vulnerabilities and for educational purposes within controlled environments.

aircrack-ng(1), aireplay-ng(1), airmon-ng(1), airodump-ng(1)