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#!/usr/bin/env perl

use strict;
use warnings;
use Digest::MD5;

my $md5 = Digest::MD5->new;

my @cipher = split(//,"LMIG}RPEDOEEWKJIQIWKJWMNDTSR}TFVUFWYOCBAJBQ");
my %dic = (
	'A' => 0,
	'B' => 1,
	'C' => 2,
	'D' => 3,
	'E' => 4,
	'F' => 5,
	'G' => 6,
	'H' => 7,
	'I' => 8,
	'J' => 9,
	'K' => 10,
	'L' => 11,
	'M' => 12,
	'N' => 13,
	'O' => 14,
	'P' => 15,
	'Q' => 16,
	'R' => 17,
	'S' => 18,
	'T' => 19,
	'U' => 20,
	'V' => 21,
	'W' => 22,
	'X' => 23,
	'Y' => 24,
	'Z' => 25,
	'{' => 26,
	'}' => 27,
);
my @key = split(//,'VIGENEREAAAA');
my @next = split(//,'BCDEFGHIJKLMNOPQRSTUVWXYZ{}A');

my %table;
my @A = split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZ{}');
$table{'A'} = \@A;
my @B = split(//,'BCDEFGHIJKLMNOPQRSTUVWXYZ{}A');
$table{'B'} = \@B;
my @C = split(//,'CDEFGHIJKLMNOPQRSTUVWXYZ{}AB');
$table{'C'} = \@C;
my @D = split(//,'DEFGHIJKLMNOPQRSTUVWXYZ{}ABC');
$table{'D'} = \@D;
my @E = split(//,'EFGHIJKLMNOPQRSTUVWXYZ{}ABCD');
$table{'E'} = \@E;
my @F = split(//,'FGHIJKLMNOPQRSTUVWXYZ{}ABCDE');
$table{'F'} = \@F;
my @G = split(//,'GHIJKLMNOPQRSTUVWXYZ{}ABCDEF');
$table{'G'} = \@G;
my @H = split(//,'HIJKLMNOPQRSTUVWXYZ{}ABCDEFG');
$table{'H'} = \@H;
my @I = split(//,'IJKLMNOPQRSTUVWXYZ{}ABCDEFGH');
$table{'I'} = \@I;
my @J = split(//,'JKLMNOPQRSTUVWXYZ{}ABCDEFGHI');
$table{'J'} = \@J;
my @K = split(//,'KLMNOPQRSTUVWXYZ{}ABCDEFGHIJ');
$table{'K'} = \@K;
my @L = split(//,'LMNOPQRSTUVWXYZ{}ABCDEFGHIJK');
$table{'L'} = \@L;
my @M = split(//,'MNOPQRSTUVWXYZ{}ABCDEFGHIJKL');
$table{'M'} = \@M;
my @N = split(//,'NOPQRSTUVWXYZ{}ABCDEFGHIJKLM');
$table{'N'} = \@N;
my @O = split(//,'OPQRSTUVWXYZ{}ABCDEFGHIJKLMN');
$table{'O'} = \@O;
my @P = split(//,'PQRSTUVWXYZ{}ABCDEFGHIJKLMNO');
$table{'P'} = \@P;
my @Q = split(//,'QRSTUVWXYZ{}ABCDEFGHIJKLMNOP');
$table{'Q'} = \@Q;
my @R = split(//,'RSTUVWXYZ{}ABCDEFGHIJKLMNOPQ');
$table{'R'} = \@R;
my @S = split(//,'STUVWXYZ{}ABCDEFGHIJKLMNOPQR');
$table{'S'} = \@S;
my @T = split(//,'TUVWXYZ{}ABCDEFGHIJKLMNOPQRS');
$table{'T'} = \@T;
my @U = split(//,'UVWXYZ{}ABCDEFGHIJKLMNOPQRST');
$table{'U'} = \@U;
my @V = split(//,'VWXYZ{}ABCDEFGHIJKLMNOPQRSTU');
$table{'V'} = \@V;
my @W = split(//,'WXYZ{}ABCDEFGHIJKLMNOPQRSTUV');
$table{'W'} = \@W;
my @X = split(//,'XYZ{}ABCDEFGHIJKLMNOPQRSTUVW');
$table{'X'} = \@X;
my @Y = split(//,'YZ{}ABCDEFGHIJKLMNOPQRSTUVWX');
$table{'Y'} = \@Y;
my @Z = split(//,'Z{}ABCDEFGHIJKLMNOPQRSTUVWXY');
$table{'Z'} = \@Z;
my @bra1 = split(//,'{}ABCDEFGHIJKLMNOPQRSTUVWXYZ');
$table{'{'} = \@bra1;
my @bra2 = split(//,'}ABCDEFGHIJKLMNOPQRSTUVWXYZ{');
$table{'}'} = \@bra2;

while(1) {
	print join("", @key),"\n";
	my $buf = "";
	for (my $i = 0; $i < @cipher; $i++) {
		my $ni = $i % 12;
		my @t = @{$table{$key[$ni]}};
		for (my $j = 0; $j < @t; $j++) {
			if ($t[$j] eq $cipher[$i]) {
				foreach (keys %dic) {
					if ($dic{$_} == $j) {
						$buf .= $_;
						last;
					}
				}
				last;
			}
		}
	}
	my $h = $md5->add($buf)->hexdigest;
	if ($h eq 'f528a6ab914c1ecf856a1d93103948fe') {
		print $buf,"\n";
		exit;
	}
	$key[11] = $next[$dic{$key[11]}];
	if ($key[11] eq 'A') {
		$key[10] = $next[$dic{$key[10]}];
		if ($key[10] eq 'A') {
			$key[9] = $next[$dic{$key[9]}];
			if ($key[9] eq 'A') {
				$key[8] = $next[$dic{$key[8]}];
				if ($key[8] eq 'A') {
					$key[7] = $next[$dic{$key[7]}];
				}
			}
		}
	}
}

$ vol.py -f forensic_100.raw --profile=WinXPSP2x86 filescan | grep hosts
Volatility Foundation Volatility Framework 2.5
0x000000000217b748      1      0 R--rw- \Device\HarddiskVolume1\WINDOWS\system32\drivers\etc\hosts
------------------------------------------------------------
$ vol.py -f forensic_100.raw --profile=WinXPSP2x86 dumpfiles -D output2/ -Q 0x000000000217b748
Volatility Foundation Volatility Framework 2.5
DataSectionObject 0x0217b748   None   \Device\HarddiskVolume1\WINDOWS\system32\drivers\etc\hosts

$ vol.py -f forensic_100.raw --profile=WinXPSP2x86 iehistory
Volatility Foundation Volatility Framework 2.5
(省略)
**************************************************
Process: 380 IEXPLORE.EXE
Cache type "URL " at 0x76be00
Record length: 0x180
Location: http://crattack.tistory.com/entry/Data-Science-import-pandas-as-pd
Last modified: 2016-12-06 03:39:11 UTC+0000
Last accessed: 2016-12-06 05:28:40 UTC+0000
File Offset: 0x180, Data Offset: 0xac, Data Length: 0xd0
File: Data-Science-import-pandas-as-pd[1]
Data: HTTP/1.1 200 OK
Content-Type: application/octet-stream
Content-Length: 42
ETag: "584632df-2a"

~U:system
**************************************************
(省略)

00401590   CALL bin.00401240    ; を
00401590   JMP  bin.00401663    ; に変更