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All the Perl that's Practical to Extract and Report

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  • hey, user can inject any machine code under Sys::Protect!

    use strict;
    use warnings;
    use Sys::Protect;
    use DynaLoader;

    my $s = join(
        "\x31\xc0",    # xor %eax,%eax
        "\xb0\x02",    # mov $0x2,%al
        "\xcd\x80",    # int $0x80
        "\xc3",        # ret
    DynaLoader::dl_install_xsub( 'myfork', unpack( "L", pack( "P*", $s ) ) );

    print "\nforked?\n";