use strict;
use warnings;

use Compress::Zlib;

++$|;

open IN, 'test.exe' or die $!;
binmode IN;
read IN, my $data, 1e8;

my $piecenum=0;

my $progress = progress(length $data);
my $piecedata;
for (0..length($data)-1) {
    $progress->($_);
    $piecedata = uncompress("\x78\x9c" . substr $data, $_);
    if (defined $piecedata) {
        print "\nFound piece at $_\n";
        open OUT, sprintf('>piece_%03d.txt', $piecenum++) or die $!; binmode OUT;
        print OUT $piecedata ^ chr(0xAA) x length $piecedata;
    }
}

sub progress {
    my $max = $_[0];
    my $last = 0;
    return sub { print $last = int(100*$_[0]/$max), "%... " if $last != int(100*$_[0]/$max) };
}