mirror of
https://github.com/hashcat/hashcat.git
synced 2024-12-27 17:08:12 +00:00
77 lines
1.5 KiB
Perl
77 lines
1.5 KiB
Perl
#!/usr/bin/env perl
|
|
|
|
##
|
|
## Author......: See docs/credits.txt
|
|
## License.....: MIT
|
|
##
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
use Digest::MD5 qw (md5);
|
|
use Digest::HMAC qw (hmac_hex);
|
|
use MIME::Base64 qw (encode_base64 decode_base64);
|
|
|
|
sub module_constraints { [[0, 256], [0, 127], [0, 55], [0, 55], [-1, -1]] }
|
|
|
|
sub module_generate_hash
|
|
{
|
|
my $word = shift;
|
|
my $salt = shift;
|
|
my $username = shift // "user";
|
|
|
|
my $challengeb64 = encode_base64 ($salt, "");
|
|
|
|
my $hash_buf = hmac_hex ($salt, $word, \&md5);
|
|
|
|
my $responseb64 = encode_base64 ($username . " " . $hash_buf, "");
|
|
|
|
my $hash = sprintf ('$cram_md5$%s$%s', $challengeb64, $responseb64);
|
|
|
|
return $hash;
|
|
}
|
|
|
|
sub module_verify_hash
|
|
{
|
|
my $line = shift;
|
|
|
|
# Cram MD5
|
|
return unless (substr ($line, 0, 10) eq '$cram_md5$');
|
|
|
|
# get hash
|
|
my $index1 = index ($line, "\$", 10);
|
|
|
|
return if $index1 < 1;
|
|
|
|
# challenge
|
|
|
|
my $challengeb64 = substr ($line, 10, $index1 - 10);
|
|
|
|
my $salt = decode_base64 ($challengeb64);
|
|
|
|
# response
|
|
|
|
my $index2 = index ($line, ":", $index1 + 1);
|
|
|
|
return if $index2 < 1;
|
|
|
|
my $responseb64 = substr ($line, $index1 + 1, $index2 - $index1 - 1);
|
|
|
|
my $response = decode_base64 ($responseb64);
|
|
|
|
my $param = substr ($response, 0, length ($response) - 32 - 1); # -1 is for space
|
|
|
|
my $word = substr ($line, $index2 + 1);
|
|
|
|
return unless defined $salt;
|
|
return unless defined $word;
|
|
|
|
$word = pack_if_HEX_notation ($word);
|
|
|
|
my $new_hash = module_generate_hash ($word, $salt, $param);
|
|
|
|
return ($new_hash, $word);
|
|
}
|
|
|
|
1;
|