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Message-ID: <a0d96a56-f48b-440a-a021-6fc359b3496f@dronecode.org.uk>
Date: Tue, 13 Feb 2024 16:06:55 +0000
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Subject: Re: Running setup-x86_64.exe from cmd does nothing but works from
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To: matthew patton <pattonme AT yahoo DOT com>
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From: Jon Turney via Cygwin <cygwin AT cygwin DOT com>
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On 12/02/2024 21:37, matthew patton via Cygwin wrote:
>> If you really suspect some AV problems, it may help to try the>
>> uncompressed setup executable, available from [1]
> Huh, when did this start? Nobody pays by BW anymore so what was the

Firstly, do not send me personal email.


I think we started providing setup as a UPX compressed executable in 
2002 or 2003.  In any case, long before my involvement.

Certainly there's an argument for *not* doing it these days, although 
your assertion that "nobody pays for BW" seems likely to be based on 
your personal perspective, rather than a survey of Cygwin users globally.

I've recently started providing the uncompressed executable *in addition 
to* the compressed one (because people occasionally have problems where 
their AV won't let them run *any* UPX compressed program).

> rationale behind a "self altering" executable? No wonder it would
> experience havoc in an A/V environment since the extracted temp file
> may well be located on a non-executable location and or EXEC would
> have been shimmed by AV and it doesn't correctly return control from
> an ephemeral location.

You're making assumptions here about how the decompression stub works, 
which I don't think are accurate for UPX.


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