id: jsp-webshell

info:
  name: JSP Webshell - Detect
  author: lu4nx
  severity: high
  reference:
    - https://github.com/tennc/webshell/tree/master/jsp
    - https://github.com/tennc/webshell/tree/master/jspx
    - https://www.rapid7.com/blog/post/2016/12/14/webshells-101/
  metadata:
    verified: true
  tags: jsp,java,jspx,webshell,file

file:
  - extensions:
      - jsp
      - java
      - jspx

    extractors:
      - type: regex
        regex:
          - '(?i)(ClassLoader|exec|eval|ProcessBuilder|getInputStream|loadClass|defineClass|URLClassLoader)\('
          - '(?i)cmd.exe'
          - '(?i)/bin/sh'
          - '(?i)/bin/bash'
          - '(?i)exeCmd'