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Nuclei Templates

PHP Webshell - Detect

ID: php-webshell

Severity: high

Author: lu4nx

Tags: php,file,webshell

Description

Section titled “Description”

YAML Source

Section titled “YAML Source”
id: php-webshell


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


    extractors:
      - type: regex
        regex:
          - '(?i)\b(passthru|eval|exec|system|phpinfo|assert|call_user_func|call_user_func_array)\('
          - '(?i)cmd.exe'
          - '(?i)/bin/sh'
          - '(?i)/bin/bash'
          - '(?i)WScript.Shell'
          - '(?i)gzuncompress\(base64_decode\('
          - '\]\(\$_(GET|POST|COOKIE|REQUEST)\['
          - '(?i)new\s*(ReflectionFunction|ReflectionClass)'
          - '(?i)0x647261646e617473'
          - '65786563' # exec
          - '(?i)\$\w+\(\$_(GET|POST|COOKIE|REQUEST)'
          - '(?i)b4tm4n'
          - '(?i)cmdshell'
# digest: 4a0a00473045022053b30b36410a8bd945bb6cddbe41c581606ff0546892e9967244c157d5b3c539022100a6b83436b1aaf3eec049d06888e0077597bff1ac9115d05781b53a040824241c:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "file/webshell/php-webshell.yaml"

View on Github