| 1 |
#!/usr/bin/perl |
| 2 |
|
| 3 |
# fluscate.pl 0.03 - The Flash Obfuscator |
| 4 |
|
| 5 |
# $Id: fluscate.pl,v 1.2 2004/07/23 12:24:52 joko Exp $ |
| 6 |
# $Log: fluscate.pl,v $ |
| 7 |
# Revision 1.2 2004/07/23 12:24:52 joko |
| 8 |
# pod |
| 9 |
# |
| 10 |
# Revision 1.1 2004/07/23 12:13:14 joko |
| 11 |
# initial commit |
| 12 |
# |
| 13 |
|
| 14 |
=pod |
| 15 |
|
| 16 |
This software is Copyright (C) 2004 Andreas Motl |
| 17 |
Ideas and future AppleScript integration by Holger Marseille. |
| 18 |
|
| 19 |
This program is free software; you can redistribute it and/or |
| 20 |
modify it under the terms of the GNU General Public License |
| 21 |
as published by the Free Software Foundation; either version 2 |
| 22 |
of the License, or (at your option) any later version. |
| 23 |
|
| 24 |
This program is distributed in the hope that it will be useful, |
| 25 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 26 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 27 |
GNU General Public License for more details. |
| 28 |
|
| 29 |
You should have received a copy of the GNU General Public License |
| 30 |
along with this program; if not, write to the Free Software |
| 31 |
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 32 |
|
| 33 |
=cut |
| 34 |
|
| 35 |
|
| 36 |
=pod |
| 37 |
|
| 38 |
=head1 Features |
| 39 |
|
| 40 |
=head2 Functions |
| 41 |
|
| 42 |
fluscate handles two different styles of function declarations: |
| 43 |
|
| 44 |
1. "Normal" ones |
| 45 |
function mp3Player ('arg1', 'arg2') |
| 46 |
|
| 47 |
2. There may be "stacked" function declarations |
| 48 |
push 'mp3Player' |
| 49 |
function () |
| 50 |
|
| 51 |
|
| 52 |
=head1 Dependencies |
| 53 |
|
| 54 |
"flasm" is required to disassemble swf files, see http://www.nowrap.de/flasm.html |
| 55 |
ACKs go to Igor Kogan. |
| 56 |
|
| 57 |
|
| 58 |
=head1 Usage |
| 59 |
|
| 60 |
=head2 win32 |
| 61 |
|
| 62 |
#> flasm.exe -d puzzle.swf > puzzle.flm |
| 63 |
#> cat puzzle.flm | perl fluscate.pl > puzzle_fusc.flm |
| 64 |
#> flasm.exe -a puzzle_fusc.flm |
| 65 |
|
| 66 |
=head2 *nix |
| 67 |
|
| 68 |
#> ./flasm -d puzzle.swf > puzzle.flm |
| 69 |
#> cat puzzle.flm | ./fluscate.pl > puzzle_fusc.flm |
| 70 |
#> ./flasm -a puzzle_fusc.flm |
| 71 |
|
| 72 |
|
| 73 |
=head1 Development |
| 74 |
|
| 75 |
=head2 Todo |
| 76 |
|
| 77 |
- provide list of flash event handler names to exclude from symbol replacement |
| 78 |
|
| 79 |
=head2 Wishlist |
| 80 |
|
| 81 |
- komplexere verschlüsselung als "-1, -2 ..." z-b nicht in der numerischen reihenfolge sondern nach |
| 82 |
zufallsprinip (-21,-3,-89)? (->random) |
| 83 |
- evtl. constants nach abfrage ersetzen ? leider sehr aufwendig, bei vielen constants (->ask) |
| 84 |
- rausgeben des arrays mit den "neuen" werten um evtl die obfuscation rückgängig zu machen (->undo) |
| 85 |
- " push 0 |
| 86 |
ls: |
| 87 |
dup |
| 88 |
trace |
| 89 |
branchIfTrue ls" |
| 90 |
... after each "constants" declaration (->pollute) |
| 91 |
- what about other symbols beside "function"s? (e.g. variables) (->mode) |
| 92 |
|
| 93 |
=head2 Notes |
| 94 |
|
| 95 |
- no function may be called "Initialize", rename it to (e.g.) "Initialize2", reassembling will not work otherwise |
| 96 |
(doesn't matter when obfuscating since function names will be replaced of course) |
| 97 |
- function names seem to be/work case insensitive (shuffle <-> Shuffle) |
| 98 |
- successfully tested with http://download.macromedia.com/pub/flash/showme/win/puzzle.zip |
| 99 |
- make sure -1, -2, -3, .... gets replaced with '-1', '-2', '-3', ... |
| 100 |
- there are multiple caller lines: callFunction, callMethod; do we have to take special care to methods? |
| 101 |
- "getMember" and "getVariable" also do function calls! |
| 102 |
- there are reserved function names which must not be replaced! (-> event handlers, e.g. "onPress") |
| 103 |
|
| 104 |
=cut |
| 105 |
|
| 106 |
|
| 107 |
use strict; |
| 108 |
use warnings; |
| 109 |
|
| 110 |
my $regex = { |
| 111 |
'function' => 'function(?:2|)\s(.+?)\s\(.*?\)', |
| 112 |
'constants' => 'constants', |
| 113 |
'call' => '(?:callFunction|callMethod|getMember|getVariable)', |
| 114 |
'function_stacked' => 'function(?:2|)\s\s\(.*?\)', |
| 115 |
'push' => 'push\s\'(.+?)\'', |
| 116 |
}; |
| 117 |
my @symbols_events = qw( onPress onReleaseOutside onRelease onMouseDown onEnterFrame ); |
| 118 |
my @symbols; |
| 119 |
|
| 120 |
# 1. read flasm code from STDIN |
| 121 |
my @lines = <STDIN>; |
| 122 |
|
| 123 |
my $counter = 0; |
| 124 |
foreach (@lines) { |
| 125 |
|
| 126 |
# trim newlines |
| 127 |
#chomp; |
| 128 |
my $symbol; |
| 129 |
|
| 130 |
# check for all "function" / "function2" symbols and ... |
| 131 |
if (m/$regex->{function}/) { |
| 132 |
# ... remember them |
| 133 |
$symbol = $1; |
| 134 |
|
| 135 |
|
| 136 |
} elsif (m/$regex->{function_stacked}/) { |
| 137 |
if ($lines[$counter - 1] =~ m/$regex->{push}/) { |
| 138 |
$symbol = $1; |
| 139 |
} |
| 140 |
} |
| 141 |
|
| 142 |
if ($symbol and not grep(/$symbol/, @symbols_events)) { |
| 143 |
push @symbols, $symbol; |
| 144 |
} |
| 145 |
|
| 146 |
$counter++; |
| 147 |
|
| 148 |
} |
| 149 |
|
| 150 |
#print join("\n", @symbols); exit; |
| 151 |
|
| 152 |
# 2. step through all symbols found and replace them |
| 153 |
my $symbol_counter = -1; |
| 154 |
foreach my $symbol (@symbols) { |
| 155 |
my $line_counter = 0; |
| 156 |
foreach (@lines) { |
| 157 |
|
| 158 |
# function declarations; single quotes might not be there! |
| 159 |
if (m/$regex->{function}/) { |
| 160 |
s/'*$symbol'*/'$symbol_counter'/i; |
| 161 |
|
| 162 |
# "constants"-line at begin of each block; single quotes should already be there |
| 163 |
} elsif (m/$regex->{constants}/) { |
| 164 |
s/'$symbol'/'$symbol_counter'/i; |
| 165 |
|
| 166 |
# function calls; replace inside predecessor line of calling-lines |
| 167 |
} elsif (m/$regex->{call}/) { |
| 168 |
$lines[$line_counter - 1] =~ s/'$symbol'/'$symbol_counter'/i; |
| 169 |
|
| 170 |
# function declarations; name of function is pushed on stack one line before! |
| 171 |
} elsif (m/$regex->{function_stacked}/) { |
| 172 |
$lines[$line_counter - 1] =~ s/'$symbol'/'$symbol_counter'/i; |
| 173 |
} |
| 174 |
|
| 175 |
$line_counter++; |
| 176 |
|
| 177 |
} |
| 178 |
$symbol_counter--; |
| 179 |
} |
| 180 |
|
| 181 |
# write all stuff to STDOUT |
| 182 |
print STDOUT @lines; |
Parent Directory
| 
Revision Log
