WiFi client isolation is a security measure that stops devices on the same network from communicating directly. This article explains how to bypass that isolation using a monitor mode wireless adapter to craft and inject packets, even when WPA2-PSK is in place. This method allows an attacker to interact with other devices on the network without going through the access point, undermining the isolation that was meant to protect them. The technical details reveal that client isolation relies on the assumption that packets must pass through the access point. However, by using specific bits in the WiFi frame, an attacker can make their packets appear as though they're coming from the access point itself. This allows for direct communication with victim devices. The article provides a Python script using Scapy to demonstrate how to craft an ARP packet that seems to originate from the distribution system, effectively bypassing the protections in place. To execute this attack, the author has developed a tool that manipulates WiFi frames and can create a new network interface in Linux that operates on the WiFi network. The setup requires a compatible Linux distribution and a monitor mode WiFi adapter. Step-by-step instructions are provided for installing necessary software and configuring the adapter for packet injection. Testing against specific configurations, like hostapd with client isolation, showed the tool's effectiveness, although there may be variations with other network implementations.