Re: Problems to use or build portable ncat

[Shinnok <admin () shinnok com>]

Hi Alfredo,

My comments embedded bellow:

On 7/12/2011 12:04 AM, Alfredo Esteban wrote:
> Hi,
>
> First at all, thanks for developing nmap. It is a very powerfull tool.
>
> I'm trying to use the portable ncat version. My first attempt was to
> download the compiled version from Shinnok:
>
> http://trunk.shinnok.com/ncat.exe
> http://trunk.shinnok.com/ncat_upx.exe
>
> that I found in this link:
>
> http://seclists.org/nmap-dev/2011/q2/1090
>
> The problem is that it doesn't work when I use "-l" flag. I get the
> following message:
>
> C:\>ncat.exe -vvv -l 4555
> Ncat: Version 5.52.IPv6.Beta2 ( http://nmap.org/ncat )
> Ncat: Listening on 0.0.0.0:4555
> NCAT DEBUG: Initialized fdlist with 102 maxfds
> NCAT DEBUG: Added fd 1948 to list, nfds 1, maxfd 1948
> NCAT DEBUG: Added fd 0 to list, nfds 2, maxfd 1948
> setsockopt: No error
>
> I verified 4555 port is free and Windows firewall is disable. In fact,
> standard ncat works fine in the same conditions.

The version you are using there is not the one in my trunk. My builds
are based on:
Ncat: Version 5.51 ( http://nmap.org/ncat )

Fyodor's build on nmap.org/ncat reports the same header as mine,
although the filename is ncat-portable-5.59BETA1. Fyodor, why is that?
If the build was to be based on 5.59BETA1 the header should have been:
Ncat: Version 5.59BETA1 ( http://nmap.org/ncat )
Did you base on 5.51 stable like I did and then cherry-picked only the
Ncat Portable commits to it?
Or did you build the static version before updating version numbers in
svn to 5.59BETA1?

Alfredo, It seems that you are not running a portable version of Ncat,
since none of the builds I know of are based on 5.52.IPv6.Beta2. I
tested again both my builds and the official one on the nmap site and
they both work with your exact command. You might want to check your
environment PATH variable.

> So I tried to compile it myself with Visual Studio Express Edition following
> the instruction from:
>
> https://secwiki.org/w/Nmap/Ncat_Portable
>
> But I can't complete the step:
>
> "Switch the active solution configuration to "Ncat Static" and then close
> the Configuration Manager. Make sure that the nsock, nbase and ncat projects
> have switched to the "Static" configuration also."
>
> I can't find the "Ncat Static" configuration in the Configuration Manager.
>
> Thank you,
>
> Alfredo
This might be because you downloaded nmap-5.51.tar.bz2  and not
nmap-5.59BETA1.tar.bz2.
This is my fault since in the wiki steps I recommended latest from svn
or latest stable release,however the latter is wrong, since the latest
stable release 5.51 does not contain the Ncat Portable changes and
5.59BETA1 is the developmentrelease that introduced these changes.
I modified the Wiki page to state so and will update it once a new
stable release is made.

Thanks,
Shinnok

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