How to implement WebShell without numeric letters

Xiaobian to share with you how to achieve WebShell does not contain numeric letters, I hope you have something to gain after reading this article, let's discuss it together!

1. Use exclusive OR ^operation 2. Use negation ~ operation

WP was also officially provided after the game, creating a backdoor in PHP using the bitwise negation (~) function. According to this article, there was no successful shell generation, so I referred to another article Deformity PHP Webshell, Webshell Hidden Learning, the generation script is as follows:

# generate.php Run the program to generate a Trojan shell.php, assert ('eval ($_POST[_])');

III. After reading this article using self-increasing operation ++, I believe you have a certain understanding of "how to implement WebShell without numeric letters." If you want to know more about relevant knowledge, please pay attention to the industry information channel. Thank you for reading!