HideShell

A JSP backdoor that enables under Tomcat hiding arbitrary JSP files, in addition to their access logs. JSPs hidden by hideshell.jsp remain accessbile until the next reboot of Tomcat instance.

Environments tested

• Tomcat 7
• Tomcat 8

How it works?

• Tomcat 源代码调试笔记 - 看不见的 Shell

• Tomcat 源代码调试 - 看不见的 Shell 第二式之隐藏任意 Jsp 文件

• Tomcat 源代码调试 - 看不见的 Shell 第二式增强之无痕

TL;DR

Hideshell.jsp hides JSP files by simply deleting them, while persuading Tomcat into believing that files are still there, thus serving them as usual.