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{$SETPEOPTFLAGS $40}Ok... Any insights as to how Total Commander is being built nowadays? I was thinking of reasonably recent Delphi 10.3.X in 2020.
Lazarus?.. This brings us to the question above (please see my response to the user `Hacker`)Dalai wrote: 2020-04-12, 16:57 UTC But that directive isn't supported in ancient Delphi versions either. Conclusion: Not possible for TC 32-bit. No idea about Lazarus' capabilities in this regard though.
Yep, checking the binary before asking the question is certainly the right idea...Usher wrote: 2020-04-13, 03:18 UTC 2arko
We know what compilers are in use. It's been explained many times, there's no need to ask again and again.
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totalcmd.exe
Free Pascal 2.5.1 03.12.2011 x86_64
Lazarus 0.9.31
No, not quite. In the current PE layout .reloc is missing, here is an Image: https://i.imgur.com/UcXKf8H.pngghisler(Author) wrote: 2020-04-14, 09:43 UTC The {$SETPEOPTFLAGS $40} probably means that it's just a flag in the PE header which needs to be set. Is this correct? I'm already patching the EXE after compilation to add a checksum, so it would be easy to add.
This only applies to totalcmd64.exe, not totalcmd.exe.
arko wrote: 2020-04-14, 10:25 UTCNo, not quite. In the current PE layout .reloc is missing, here is an Image: https://i.imgur.com/UcXKf8H.pngghisler(Author) wrote: 2020-04-14, 09:43 UTC The {$SETPEOPTFLAGS $40} probably means that it's just a flag in the PE header which needs to be set. Is this correct? I'm already patching the EXE after compilation to add a checksum, so it would be easy to add.
Please take a look at this article: https://insights.sei.cmu.edu/cert/2018/08/when-aslr-is-not-really-aslr---the-case-of-incorrect-assumptions-and-bad-defaults.html
Christian,ghisler(Author) wrote: 2020-04-14, 09:43 UTC The {$SETPEOPTFLAGS $40} probably means that it's just a flag in the PE header which needs to be set. Is this correct? I'm already patching the EXE after compilation to add a checksum, so it would be easy to add.
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const
// these are the names used in the Windows headers
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE = $0040;
IMAGE_DLLCHARACTERISTICS_NX_COMPAT = $0100;
// the directive does not support constant calculations :'(
IMAGE_DLLCHARACTERISTICS_FLAGS = IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE or IMAGE_DLLCHARACTERISTICS_NX_COMPAT;
// set this in the main program file
{$SetPEOptFlags IMAGE_DLLCHARACTERISTICS_FLAGS}
)Good newsghisler(Author) wrote: 2020-04-17, 07:58 UTC I found the option to add the relocation section.
However, I get an error about an invalid compiler directive when adding $SetPEOptFlags. I will have to patch it.
Would you be able to share your experience at Lazarus forum once the issue is resolved? Above-mentioned thread might do.