Linux下Python版webshell后门查杀工具

使用说明：

1.查杀指定路径：python webshell.py 路径

2.按时间查找文件：python webshell.py 路径 “2013-09-28 00:00:00″

python实现代码：

# -*- coding: utf-8 -*-

import os
import sys
import re
import time

rulelist = [
'(\$_(GET|POST|REQUEST)\[.{0,15}\]\s{0,10}\(\s{0,10}\$_(GET|POST|REQUEST)\[.{0,15}\]\))',
'(base64_decode\([\'"][\w\+/=]{200,}[\'"]\))',
'(eval(\s|\n)*\(base64_decode(\s|\n)*\((.|\n){1,200})',
'((eval|assert)(\s|\n)*\((\s|\n)*\$_(POST|GET|REQUEST)\[.{0,15}\]\))',
'(\$[\w_]{0,15}(\s|\n)*\((\s|\n)*\$_(POST|GET|REQUEST)\[.{0,15}\]\))',
'(call_user_func\(.{0,15}\$_(GET|POST|REQUEST))',
'(preg_replace(\s|\n)*\(.{1,100}[/@].{0,3}e.{1,6},.{0,10}\$_(GET|POST|REQUEST))',
'(wscript\.shell)',
'(cmd\.exe)',
'(shell\.application)',
'(documents\s+and\s+settings)',
'(system32)',
'(serv-u)',
'(phpspy)',
'(jspspy)',
'(webshell)',
'(Program\s+Files)'
]

def Scan(path):
print (' 可疑文件 ')
print ('################################')
for root,dirs,files in os.walk(path):
for filespath in files:
if os.path.getsize(os.path.join(root,filespath)) < 1024000:
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])[0:200])
print ('最后修改时间：'+time.strftime('%Y-%m-%d %H:%M:%S', time.localtim))
print ('\n\n')
break

#由文件最后修改时间扫描
def _Get_Time_Files(_path,_time):
_time = time.mktime(time.strptime(_time,'%Y-%m-%d %H:%M:%S'))
print ('\n')
print (' 可疑文件 ')
print ('#############################')
print ('文件路径 最后修改时间 \n')

for _root,_dirs,_files in os.walk(_path):
for _file in _files:
if _file.find('.') != -1:
_txt = _file[(_file.rindex('.')+1):].lower()

if _txt == 'php' or _txt == 'jsp':
_File_Time = os.path.getmtime(_root+'/'+_file)
if _File_Time > _time:
print (_root+'/'+_file+' '+time.strftime('%Y-%m-%d %H:%M:%S', time))


if len(sys.argv) != 3 and len(sys.argv) != 2:
print ('参数错误：')
print ('\t按恶意代码查杀：'+sys.argv[0]+' 目录名')
print ('\t按修改时间查杀：'+sys.argv[0]+' 目录名 修改时间(格式:"2013-09-09 12:00:00")')

if os.path.lexists(sys.argv[1]) == False:
print ('提示：指定的扫描目录不存在！')

print ('\n\n开始查杀：'+sys.argv[1])

if len(sys.argv) == 2:
Scan(sys.argv[1])
else:
_Get_Time_Files(sys.argv[1],sys.argv[2])

print ('提示：完成查杀，哈哈！')