byp4a55 professor6T9

Linux msk-1-vm-cn73 5.14.0-710.el9.x86_64 #1 SMP PREEMPT_DYNAMIC Wed May 27 09:04:56 UTC 2026 x86_64
Apache
127.0.0.1

File Name : https-proxy-snif.pl

#!/usr/bin/perl
# 5.6.1998, Sampo Kellomaki <sampo@iki.fi>

$usage = <<USAGE
Usage: ./https-proxy-snif.pl *listen_port* *dest_machine* *dest_port*
E.g:   ./https-proxy-snif.pl 4443 www.bacus.pt 443

This proxy allows you to observe the protocol talked by your browser
to remote https server. Useful for debugging http headers etc sent
in this dialogue as well as capturing the requests for later
automating the task.

The proxying is not perfect: the client will see different
certificate than actually sent by server. You will be able to launch
only one simultaneous connection (set you browser to attempt only
one at a time) because it is iterative server, keep-alives are not
handled at all, etc.

Remeber: you must have cert.pem and key.pem in the current working directory.

Example:
    ./https-proxy-snif.pl 4443 www.bacus.pt 443
Then enter https://localhost:4443/ in Netscape Location prompt.
USAGE
    ;

die $usage unless $#ARGV == 2;
($listen_port, $dest_host, $dest_port) = @ARGV;
$trace = 0;

use Socket;
use Net::SSLeay qw(sslcat die_now die_if_ssl_error);
#$Net::SSLeay::trace = 3; # Super verbose debugging
Net::SSLeay::load_error_strings();
Net::SSLeay::SSLeay_add_ssl_algorithms();

$our_ip = "\0\0\0\0";  # Bind to all interfaces
$sockaddr_template = 'S n a4 x8';
$our_serv_params = pack ($sockaddr_template, &AF_INET, $listen_port, $our_ip);

socket (S, &AF_INET, &SOCK_STREAM, 0)  or die "socket: $!";
bind (S, $our_serv_params)             or die "bind:   $!";
listen (S, 5)                          or die "listen: $!";
$ctx = Net::SSLeay::CTX_new ()         or die_now("CTX_new ($ctx): $!");
Net::SSLeay::set_server_cert_and_key($ctx, 'cert.pem', 'key.pem') or die "key";

while (1) {    
    print "Accepting connections...\n";
    ($addr = accept (NS, S))           or die "accept: $!";
    select (NS); $| = 1; select (STDOUT);  # Piping hot!
    
    ($af,$client_port,$client_ip) = unpack($sockaddr_template,$addr);
    @inetaddr = unpack('C4',$client_ip);
    print "$af connection from "
	. join ('.', @inetaddr) . ":$client_port\n";
    
    ### We now have a network connection, lets fire up SSLeay...
 
    $ssl = Net::SSLeay::new($ctx)      or die_now("SSL_new ($ssl): $!");
    #print &Net::SSLeay::get_cipler_list($ssl, 32000);
    &Net::SSLeay::set_fd($ssl, fileno(NS));
    
    $err = Net::SSLeay::accept($ssl);
    die_if_ssl_error("ssl accept: ($!)");
    print "Cipher `" . Net::SSLeay::get_cipher($ssl) . "'\n";
    
    ### Connected. Get the HTTP request and wrap it for transport
    ### to remote host.
    
    $got = Net::SSLeay::read($ssl) or die "$$: ssl read failed";
    print "Got `$got' (" . length ($got) . " chars)\n" if $trace;
    
    $got =~ s/Host:\s+\S+\r?\n/Host: $dest_host:$dest_port\r\n/i;

print "Will send `$got' (" . length ($got)
	. " chars) to $dest_host:$dest_port\n";
    
    ### Set up a client socket
    
    $dest_port = getservbyname  ($dest_port, 'tcp')
	unless $dest_port =~ /^\d+$/;
    $dest_serv_ip = gethostbyname ($dest_host);
    $dest_serv_params  = pack ($sockaddr_template, &AF_INET,
			       $dest_port, $dest_serv_ip);
    
    socket  (SS, &AF_INET, &SOCK_STREAM, 0) or die "client: socket: $!";
    connect (SS, $dest_serv_params)         or die "client: connect: $!";
    select  (SS); $| = 1; select (STDOUT);

### Do SSL handshake with remote server

$ssl2 = Net::SSLeay::new($ctx) or die_now("client: SSL_new ($ssl2)");
    &Net::SSLeay::set_fd($ssl2, fileno(SS));
    &Net::SSLeay::set_cipher_list($ssl2, "DES-CBC3-MD5:RC4-MD5");
    &Net::SSLeay::print_errs();
    $err = Net::SSLeay::connect($ssl2);
    &Net::SSLeay::print_errs();
    print "client: Cipher '" . Net::SSLeay::get_cipher($ssl2) . "'\n";
    &Net::SSLeay::print_errs();

### Exchange data with remote server

$err = Net::SSLeay::write($ssl2, $got) or die "client: write: $!";
    &Net::SSLeay::print_errs();
	    
    shutdown SS, 1;
	    
    $reply = Net::SSLeay::read($ssl2);
    &Net::SSLeay::print_errs();

print "Remote replied `$reply' (" . length ($reply) . " chars)\n";
	    
    &Net::SSLeay::free ($ssl2);
    &Net::SSLeay::print_errs();
    close SS;

### Reply to our client

&Net::SSLeay::write ($ssl, $reply) or die "write: $!";
    &Net::SSLeay::print_errs();
    
    (&Net::SSLeay::write ($ssl, <<HTTP) or die "write: $!") if 0;
HTTP/1.0 200 It works. Cool.
Content-Type: text/html

<title>foo</title>
<h1>Bar Cool</h1>
HTTP
    ;
    
    &Net::SSLeay::free ($ssl);           # Tear down connection
    close NS;
}

__END__

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	0/0	0755	2026-06-06 11:41:20
..	dir	-	0/0	0755	2026-06-06 11:41:20
bio.pl	text/x-perl	1.18 KB	0/0	0644	2018-07-09 04:58:08
bulk.pl	text/x-perl	1.91 KB	0/0	0644	2018-07-09 04:58:08
callback.pl	text/x-perl	3.12 KB	0/0	0644	2018-07-09 04:58:08
cli-cert.pl	text/x-perl	3.72 KB	0/0	0644	2018-07-09 04:58:08
ephemeral.pl	text/x-perl	553 B	0/0	0644	2018-07-09 04:58:08
get_authenticated_page.pl	text/x-perl	730 B	0/0	0644	2018-07-09 04:58:08
get_page.pl	text/x-perl	507 B	0/0	0644	2018-07-09 04:58:08
get_page_cert.pl	text/x-perl	966 B	0/0	0644	2018-07-09 04:58:08
https-proxy-snif.pl	text/x-perl	4.44 KB	0/0	0644	2018-07-09 04:58:08
makecert.pl	text/x-perl	1.5 KB	0/0	0644	2018-07-09 04:58:08
minicli.pl	text/x-perl	1.31 KB	0/0	0644	2018-07-09 04:58:08
passwd-cb.pl	text/x-perl	809 B	0/0	0644	2018-07-09 04:58:08
req.conf	text/plain	1.2 KB	0/0	0644	2018-07-09 04:58:08
ssl-inetd-serv.pl	text/x-perl	1.6 KB	0/0	0644	2018-07-09 04:58:08
ssl_diff.pl	text/x-perl	631 B	0/0	0644	2018-07-09 04:58:08
sslcat.pl	text/x-perl	526 B	0/0	0644	2018-07-09 04:58:08
sslecho.pl	text/x-perl	3.07 KB	0/0	0644	2018-07-09 04:58:08
stdio_bulk.pl	text/x-perl	2.53 KB	0/0	0644	2018-07-09 04:58:08
tcpcat.pl	text/x-perl	422 B	0/0	0644	2018-07-09 04:58:08
tcpecho.pl	text/x-perl	1.77 KB	0/0	0644	2018-07-09 04:58:08
x509_cert_details.pl	text/x-perl	10.31 KB	0/0	0644	2020-10-10 05:11:01

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