PHP webshell Check Tool (python version)

In the Web security emergency response, it is inevitable to check whether the webshell is uploaded on the server. The manual check is slow and you have written a script to check it. On the Windows platform, lake2 has been written to the lake chart, and the general check is enough. I wrote a Linux image written in python.
1. Usage: find. py directory name
2. python regular expressions are used for matching. You can add your own defined Regular Expressions in keywords. The format is as follows:
["Eval ($ \ _ POST", "found a PHP Trojan! "] # The regular expression is followed by the regular expression description, which is displayed in the log.
3. Modify the file suffix and the regular expression of the keyword to become a webshell check tool in other languages, ^_^.
4. the development environment is windows xp + ActivePython 2.6.2.2. If your computer does not have a Linux environment, you are too lazy to install a virtual machine. You will test the environment on your Linux virtual machine tomorrow.
5. Currently, it is only a framework that will be gradually improved.
1. # coding: gbk
2. import OS, sys
3. import re
4.
5. findtype = [. php,. inc] # file suffix type to be checked
6.
7. # The keyword regular expression to be checked and the description in the log are a two-dimensional array.
8. keywords = [["eval ($ \ _ POST", "found a PHP Trojan! "],
9. ["(system | shell_exec | exec | popen)", "PHP Command Execution function found! "]
10.]
11.
12. writelog = open(log.txt, w +)
13.
14. def checkfile (filename ):
15. fp = open (filename)
16. content = fp. read ()
17. for keyword in keywords:
18. if re. search (keyword [0], content, re. I ):
19. log = "% s: % s" % (filename, keyword [1])
20. # print log
21. print> writelog, log
22. fp. close ()
23.
24.
25. def checkdir (dirname ):
26. try:
27. ls = OS. listdir (dirname)
28. Failed t:
29. print access deny
30. else:
31. for l in ls:
32. temp = OS. path. join (dirname, l)
33. if (OS. path. isdir (temp )):
34. checkdir (temp)
35. else:
36. ext = temp [temp. rindex (.):]
37. if ext in findtype:
38. checkfile (temp)
39.
40.
41. if _ name __= = "_ main __":
42. print "PHP webshell check for Python! "
43. print "By: Neeao"
44. print "http://Neeao.com"
45. if len (sys. argv) <2:
46. print "% s C: \" % sys. argv [0]
47. else:
48. print "Check start! "
49. dirs = sys. argv [1:]
50. # print dirs [0]
51. if OS. path. exists (dirs [0]):
52. checkdir (dirs [0])
53. else:
54. print "Dir: % s not exists! "% Dirs [0]
55.
56. print "Check finsh! "
57.
Writelog. close (