open ( my $in_file, '<', "file" );
binmode( $in_file );


my $mem_file;
binmode( $mem_file );

my ( $buf, $data, $n, $bytes ); 

while (( $n = read $in_file, $data, 4096 ) != 0){
	 $mem_file .= pack( "v*", unpack("n*", $data ));   
	$bytes+=$n;
	
}


open ( my $otherMem_file, '<', \$mem_file ); 
binmode( $otherMem_file );

seek $otherMem_file, 0x00, 0;
read $otherMem_file, my $temp, 0x1200;

open my $out_file, '>', "reversed";
syswrite( $out_file, $temp);