Task 1: Hijack a Session using Zed Attack Proxy (ZAP) Injecting the Attacker’s Packet: Once the attacker has interrupted the connection between the server and target, they can either inject data into the network or actively participate as the man-in-the-middle, passing data between the target and server, while reading and injecting data at will.Desynchronizing the Connection: A desynchronized state occurs when a connection between the target and host has been established, or is stable with no data transmission, or when the server’s sequence number is not equal to the client’s acknowledgment number (or vice versa).Tracking the Connection: The attacker uses a network sniffer to track a victim and host, or uses a tool such as Nmap to scan the network for a target with a TCP sequence that is easy to predict.Session hijacking can be divided into three broad phases: Hijack a session using Zed Attack Proxy (ZAP).The labs in this exercise demonstrate how to hijack an active session between two endpoints. A DoS attack happens when attackers sniff sensitive information and use it to make host or network resource unavailable to users, usually by flooding the target with requests until the system is overloaded.Īs a professional ethical hacker or penetration tester, you must possess the required knowledge to hijack sessions in order to test the systems in the target network. A MITM attack occurs when an attacker places himself/herself between the authorized client and the server to intercept information flowing in either direction. The server responds to the attacker’s requests as though it were communicating with an authenticated user, after which the attacker is able to perform any action on that system.Īttackers can use session hijacking to launch various kinds of attacks such as man-in-the-middle (MITM) and Denial-of-Service (DoS) attacks. It involves stealing or guessing a victim’s valid session ID, which the server uses to identify authenticated users, and using it to establish a connection with the server. Session hijacking allows an attacker to take over an active session by bypassing the authentication process.
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