Wiki of hardening

[Fred vS]

Hello.

In the wiki: https://wiki.freepascal.org/hardening

There is a example with result.
I did compile the demo using the parameters with fpc 3.3.1 (because 3.2.2 does not allow it).

But I dont get same result as wiki:

program Test;
{$linklib c}
begin
  writeln('test');
end.

Compile with this -
fpc  -Cg  -k-pie  -k-znow  test.pas

And examine the result -

$> file test [enter]
test: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.4.0, stripped

My result has LSB pie executable (that means, afaik, that the binary was hardened)

Code: Bash  [Select][+][-]

1. file test
2. test: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.4.0, stripped
3.  

Also, there was no strip parameter used, so why file reports the binary as stripped ?

What do I miss ?

[MarkMLl]

Also, there was no strip parameter used, so why file reports the binary as stripped ?

What happens if you explicitly specify that debugging information should be included?

MarkMLl

[TRon]

Also, there was no strip parameter used, so why file reports the binary as stripped ?

What do I miss ?

As a guess: fpc.cfg ?

compile with -va to see what FPC picks up (if anything)

[Fred vS]

Also, there was no strip parameter used, so why file reports the binary as stripped ?

What happens if you explicitly specify that debugging information should be included?

MarkMLl

Hello Mark.

Well seen, indeed with "-ghl" parameter it is not stripped.

Code: Pascal  [Select][+][-]

1. > file test
2.  
3. test: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.4.0, with debug_info, not stripped
4.  

So good to know that, by default, the binary is stripped.

Thanks.

As a guess: fpc.cfg ?

Hello TRon.
No, nothing in fpc.cfg that could explain the "stripped".

[EDIT] Even without hardening and with fpc 3.2.2 or fpc 3.3.1. the binary is declared as stripped  (even compiled without any parameter, like fpc test ).

Fre;D