本文讲述了一个python查找 webshell脚本的代码，除了查找webshell功能之外还具有白名单功能，以及发现恶意代码发送邮件报警等功能，感兴趣的朋友可以自己测试一下看看效果。

具体的功能代码如下：

#!/usr/bin/env python #-*- coding: utf-8 -*- import os import sys import re import smtplib #设定邮件 fromaddr = "smtp.qq.com" toaddrs = ["voilet@qq.com"] username = "voilet" password = "xxxxxx" #设置白名单 pass_file = ["api_ucenter.php"] #定义发送邮件函数 def sendmail(toaddrs,sub,content): '发送邮件模块' # Add the From: and To: headers at the start! msg = ("From: %srnTo: %srnSubject: %srnrn" % (fromaddr, ", ".join(toaddrs), sub)) msg += content server = smtplib.SMTP('mail.funshion.com', 25,) server.login(username, password) server.sendmail(fromaddr, toaddrs, msg) server.quit() #设置搜索特征码 rulelist = [ '($_(GET|POST|REQUEST)[.{0,15}]($_(GET|POST|REQUEST)[.{0,15}]))', '(base64_decode(['"][w+/=]{200,}['"]))', 'eval(base64_decode(', '(eval($_(POST|GET|REQUEST)[.{0,15}]))', '(assert($_(POST|GET|REQUEST)[.{0,15}]))', '($[w_]{0,15}($_(POST|GET|REQUEST)[.{0,15}]))', '(wscript.shell)', '(gethostbyname()', '(cmd.exe)', '(shell.application)', '(documentss+ands+settings)', '(system32)', '(serv-u)', '(提权)', '(phpspy)', '(后门)', '(webshell)', '(Programs+Files)', 'www.phpdp.com', 'phpdp', 'PHP神盾', 'decryption', 'Ca3tie1', 'GIF89a', 'IKFBILUvM0VCJD/APDolOjtW0tgeKAwA', ''e'.'v'.'a'.'l'', ] def Scan(path): for root,dirs,files in os.walk(path): for filespath in files: isover = False if '.' in filespath: ext = filespath[(filespath.rindex('.')+1):] if ext=='php' and filespath not in pass_file: file= open(os.path.join(root,filespath)) filestr = file.read() file.close() for rule in rulelist: result = re.compile(rule).findall(filestr) if result: print '文件：'+os.path.join(root,filespath) print '恶意代码：'+str(result[0]) print 'nn' sendmail(toaddrs,"增值发现恶意代码",'文件：'+os.path.join(root,filespath)+"n" + '恶意代码：'+str(result[0])) break try: if os.path.lexists("/home/web_root/"): print('nn开始扫描：'+ "/home/web_root/") print(' 可疑文件 ') print('########################################') Scan("/home/web_root/") print('提示：扫描完成--~') else: print '提示：指定的扫描目录不存在--- ' except IndexError: print "请指定扫描文件目录"