1 |
#!/usr/bin/perl |
2 |
# SSL Man-In-The-Middle v0.1. Copyright (C) Vlatko Kosturjak, Kost |
3 |
# Distributed under GPL v2+. |
4 |
|
5 |
use strict; |
6 |
use POSIX; |
7 |
use IO::Socket::SSL; |
8 |
use Getopt::Long; |
9 |
|
10 |
my $localport; |
11 |
my $localaddr; |
12 |
my $help; |
13 |
my $host; |
14 |
my $port; |
15 |
my $daemon; |
16 |
my $buffersize = 2048; |
17 |
my $logtype; |
18 |
my $logdir; |
19 |
my $daemon; |
20 |
my $serverkey; |
21 |
my $servercert; |
22 |
my $serverdh; |
23 |
|
24 |
$| = 1; |
25 |
|
26 |
my $goresult = GetOptions( |
27 |
"lport=i" => \$localport, |
28 |
"laddr=s" => \$localaddr, |
29 |
"rport=i" => \$port, |
30 |
"raddr=s" => \$host, |
31 |
"logtype=i" => \$logtype, |
32 |
"logdir=s" => \$logdir, |
33 |
"daemon" => \$daemon, |
34 |
"serverkey=s" => \$serverkey, |
35 |
"servercert=s" => \$servercert, |
36 |
"serverdh=s" => \$serverdh, |
37 |
"help" => \$help |
38 |
); |
39 |
|
40 |
if ($help) { |
41 |
print <<"END"; |
42 |
SSL Man-In-The-Middle v0.1. Copyright (C) Vlatko Kosturjak, Kost |
43 |
Distributed under GPL v2+. |
44 |
|
45 |
Usage: $0 [OPTIONS] |
46 |
|
47 |
--lport <port> Listening port (default 80) |
48 |
--laddr <address> Listening address (default localhost) |
49 |
--rport <port> Remote port to connect to (default 8080) |
50 |
--raddr <address> Remote address to connect to (default localhost) |
51 |
--serverkey <file> Certificate key file for local SSL server |
52 |
--servercert <file> Certificate file for local SSL server |
53 |
--serverdh <file> Diffie-Helman file for key exchange |
54 |
--log <type> Type of log where 0 is no log (default 0) |
55 |
--logdir Directory to log to (default .) |
56 |
--daemon Daemonize (work in background) |
57 |
--help Display this help message |
58 |
END |
59 |
exit; |
60 |
} |
61 |
|
62 |
# set default values |
63 |
$localport = 8080 unless ($localport); |
64 |
$localaddr = "127.0.0.1" unless ($localaddr); |
65 |
$port = 80 unless ($port); |
66 |
$host = "127.0.0.1" unless ($host); |
67 |
$logdir = "." unless ($logdir); |
68 |
|
69 |
my %o = ( |
70 |
'dir' => $logdir, |
71 |
'port' => $localport, |
72 |
'toport' => $port, |
73 |
'tohost' => $host |
74 |
); |
75 |
|
76 |
if ($daemon) { |
77 |
my $pid = fork; |
78 |
exit if $pid; |
79 |
die "$!" unless defined($pid); |
80 |
POSIX::setsid() or die "$!"; |
81 |
} |
82 |
|
83 |
my $ah = IO::Socket::SSL->new( |
84 |
'LocalPort' => $localport, |
85 |
'LocalAddr' => $localaddr, |
86 |
'Reuse' => 1, |
87 |
'Proto' => 'tcp', |
88 |
'SSL_verify_mode' => '0', |
89 |
'SSLdhfile' => $serverdh, |
90 |
'SSL_cert_file' => $servercert, |
91 |
'SSL_key_file' => $serverkey, |
92 |
'Listen' => 10 |
93 |
) || die "$!"; |
94 |
|
95 |
$SIG{'CHLD'} = 'IGNORE'; |
96 |
my $num = 0; |
97 |
|
98 |
while (1) { |
99 |
my $ch = $ah->accept(); |
100 |
if ( !$ch ) { |
101 |
print STDERR "cannot accept: $! ", IO::Socket::SSL::errstr(), |
102 |
"\n"; |
103 |
next; |
104 |
} |
105 |
if ( !$ch ) { print STDERR "cannot accept: $!\n"; next; } |
106 |
++$num; |
107 |
my $pid = fork(); |
108 |
if ( !defined($pid) ) { print STDERR "cannot fork while(1) $!\n"; } |
109 |
elsif ( $pid == 0 ) { |
110 |
$ah->close( SSL_no_shutdown => 1 ); |
111 |
Run( \%o, $ch, $num ); |
112 |
} else { |
113 |
$ch->close( SSL_no_shutdown => 1 ); |
114 |
} |
115 |
} |
116 |
|
117 |
sub Run { |
118 |
my ( $o, $ch, $num ) = @_; |
119 |
my $th = IO::Socket::SSL->new( |
120 |
'PeerAddr' => $o->{'tohost'}, |
121 |
'PeerPort' => $o->{'toport'}, |
122 |
'SSL_use_cert' => '0', |
123 |
'SSL_verify_mode' => '0', |
124 |
|
125 |
# 'SSL_cipher_list' => 'NUL:LOW:EXP:ADH', |
126 |
'SSL_version' => 'SSLv3', # SSLv3, SSLv2, TLSv1 |
127 |
'Proto' => 'tcp' |
128 |
); |
129 |
if ( !$th ) { print "cannot connect th: $!"; exit 0; } |
130 |
else { print "connected!"; } |
131 |
my $fh; |
132 |
if ( $o->{'dir'} ) { |
133 |
$fh = Symbol::gensym(); |
134 |
open( $fh, ">$o->{'dir'}/tunnel$num.log" ) or die "$!"; |
135 |
} |
136 |
$ch->autoflush(); |
137 |
$th->autoflush(); |
138 |
my $httpheader = ""; |
139 |
my $httpbuf = ""; |
140 |
while ( $ch || $th ) { |
141 |
my $rin = ""; |
142 |
vec( $rin, fileno($ch), 1 ) = 1 if $ch; |
143 |
vec( $rin, fileno($th), 1 ) = 1 if $th; |
144 |
my ( $rout, $eout ); |
145 |
select( $rout = $rin, undef, $eout = $rin, 120 ); |
146 |
if ( !$rout && !$eout ) { } |
147 |
my $cbuffer = ""; |
148 |
my $tbuffer = ""; |
149 |
|
150 |
if ($ch |
151 |
&& ( vec( $eout, fileno($ch), 1 ) |
152 |
|| vec( $rout, fileno($ch), 1 ) ) |
153 |
) |
154 |
{ |
155 |
my $result = sysread( $ch, $tbuffer, $buffersize ); |
156 |
if ( !defined($result) ) { |
157 |
print STDERR "$!\n"; |
158 |
exit 0; |
159 |
} |
160 |
if ( $result == 0 ) { exit 0; } |
161 |
} |
162 |
if ($th |
163 |
&& ( vec( $eout, fileno($th), 1 ) |
164 |
|| vec( $rout, fileno($th), 1 ) ) |
165 |
) |
166 |
{ |
167 |
my $result = sysread( $th, $cbuffer, $buffersize ); |
168 |
if ( !defined($result) ) { print STDERR "$!\n"; exit 0; } |
169 |
if ( $result == 0 ) { exit 0; } |
170 |
} |
171 |
if ( $fh && $tbuffer ) { |
172 |
( print $fh "[c]" . $tbuffer . "[/c]" ); |
173 |
} |
174 |
while ( my $len = length($tbuffer) ) { |
175 |
my $res = syswrite( $th, $tbuffer, $len ); |
176 |
if ( $res > 0 ) { $tbuffer = substr( $tbuffer, $res ); } |
177 |
else { print STDERR "$!\n"; } |
178 |
} |
179 |
if ( $fh && $cbuffer ) { |
180 |
( print $fh "[s]" . $cbuffer . "[/s]" ); |
181 |
} |
182 |
while ( my $len = length($cbuffer) ) { |
183 |
my $res = syswrite( $ch, $cbuffer, $len ); |
184 |
if ( $res > 0 ) { $cbuffer = substr( $cbuffer, $res ); } |
185 |
else { print STDERR "$!\n"; } |
186 |
} |
187 |
} |
188 |
} |
189 |
|