mirror of
https://github.com/hashcat/hashcat.git
synced 2024-11-18 06:08:16 +00:00
120 lines
2.2 KiB
Perl
120 lines
2.2 KiB
Perl
#!/usr/bin/env perl
|
|
|
|
##
|
|
## Author......: See docs/credits.txt
|
|
## License.....: MIT
|
|
##
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
use Crypt::RC4;
|
|
use Digest::MD5 qw (md5);
|
|
use Encode;
|
|
|
|
sub module_constraints { [[-1, -1], [-1, -1], [0, 15], [32, 32], [-1, -1]] }
|
|
|
|
sub module_generate_hash
|
|
{
|
|
my $word = shift;
|
|
my $salt = shift;
|
|
my $param = shift;
|
|
my $param2 = shift;
|
|
|
|
my $salt_bin = pack ("H*", $salt);
|
|
|
|
my $tmp = md5 (encode ("UTF-16LE", $word));
|
|
|
|
$tmp = substr ($tmp, 0, 5);
|
|
|
|
my $data;
|
|
|
|
for (my $i = 0; $i < 16; $i++)
|
|
{
|
|
$data .= $tmp;
|
|
$data .= $salt_bin;
|
|
}
|
|
|
|
$tmp = md5 ($data);
|
|
|
|
$tmp = substr ($tmp, 0, 5);
|
|
|
|
my $version;
|
|
|
|
if (defined $param2)
|
|
{
|
|
$version = $param2;
|
|
}
|
|
else
|
|
{
|
|
$version = (unpack ("L", $tmp) & 1) ? 0 : 1;
|
|
}
|
|
|
|
my $rc4_key = md5 ($tmp . "\x00\x00\x00\x00");
|
|
|
|
my $m = Crypt::RC4->new (substr ($rc4_key, 0, 16));
|
|
|
|
my $encdata;
|
|
|
|
if (defined $param)
|
|
{
|
|
$encdata = $m->RC4 (pack ("H*", $param));
|
|
}
|
|
else
|
|
{
|
|
$encdata = "A" x 16; ## can be anything
|
|
}
|
|
|
|
my $data1_buf = $encdata;
|
|
my $data2_buf = md5 (substr ($data1_buf, 0, 16));
|
|
|
|
$m = Crypt::RC4->new (substr ($rc4_key, 0, 16));
|
|
|
|
my $encrypted1 = $m->RC4 ($data1_buf);
|
|
my $encrypted2 = $m->RC4 ($data2_buf);
|
|
|
|
my $hash = sprintf ("\$oldoffice\$%d*%s*%s*%s", $version, $salt, unpack ("H*", $encrypted1), unpack ("H*", $encrypted2));
|
|
|
|
return $hash;
|
|
}
|
|
|
|
sub module_verify_hash
|
|
{
|
|
my $line = shift;
|
|
|
|
# Office Old $1 $2
|
|
my ($hash_in, $word) = split ":", $line;
|
|
|
|
return unless defined $hash_in;
|
|
return unless defined $word;
|
|
|
|
my @data = split /\*/, $hash_in;
|
|
|
|
return unless scalar @data == 4;
|
|
|
|
my $signature = shift @data;
|
|
|
|
return unless (($signature eq '$oldoffice$0') || ($signature eq '$oldoffice$1'));
|
|
|
|
return unless (length $data[0] == 32);
|
|
return unless (length $data[1] == 32);
|
|
return unless (length $data[2] == 32);
|
|
|
|
my $salt = shift @data;
|
|
my $param = shift @data;
|
|
my $param2 = substr ($signature, 11, 1);
|
|
|
|
return unless defined $salt;
|
|
return unless defined $word;
|
|
return unless defined $param;
|
|
return unless defined $param2;
|
|
|
|
$word = pack_if_HEX_notation ($word);
|
|
|
|
my $new_hash = module_generate_hash ($word, $salt, $param, $param2);
|
|
|
|
return ($new_hash, $word);
|
|
}
|
|
|
|
1;
|