Re: Nmap Script Engine on OpenWrt

[Bruno <bruno () streamfeed com>]

Daniel,

Thanks for the patch!! That did it and I was able to compile it to 
OpenWrt. Installed it and scripting is working on OpenWrt now.

Thanks a lot!

On 04/06/2018 12:02 AM, Daniel Miller wrote:
> It looks like Lua puts the commands to 'ar' into the AR variable. Your 
> build environment or configuration sets the AR variable to the 
> appropriate binary for your system, overwriting these commands. Then 
> when building, ar complains that it's missing a valid command.
>
> As a workaround, here's a patch that ought to solve it:
>
> diff --git a/liblua/Makefile b/liblua/Makefile
> index d71c75c..ee52283 100644
> --- a/liblua/Makefile
> +++ b/liblua/Makefile
> @@ -11,7 +11,7 @@ CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_2 
> $(SYSCFLAGS) $(MYCFLAGS)
>  LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
>  LIBS= -lm $(SYSLIBS) $(MYLIBS)
>
> -AR= ar rcu
> +AR= ar
>  RANLIB= ranlib
>  RM= rm -f
>
> @@ -56,7 +56,7 @@ o:    $(ALL_O)
>  a:     $(ALL_A)
>
>  $(LUA_A): $(BASE_O)
> -       $(AR) $@ $(BASE_O)
> +       $(AR) rcu $@ $(BASE_O)
>         $(RANLIB) $@
>
>  $(LUA_T): $(LUA_O) $(LUA_A)
>
> I'll see what I can do to get this fixed in upstream Lua.
>
> Dan
>
>
> On Thu, Apr 5, 2018 at 3:32 PM, Bruno <bruno () streamfeed com 
> <mailto:bruno () streamfeed com>> wrote:
>
>     The lua version on the OpenWRT device that is being used is Lua 5.1.5.
>
>     Trying with the "--with-liblua=included" option, it tried to
>     compile liblua, however it still failed with the attached error log.
>
>     But it seems some progress were made. Do you have any other
>     suggestions I could try?
>
>     Thanks Daniel
>
>
>     On 04/05/2018 10:30 AM, Daniel Miller wrote:
> >     Bruno,
> >
> >     Thanks for following up. It appears that you might have a version
> >     of Lua installed that is incompatible with Nmap. You can force
> >     Nmap to build and statically link the Lua 5.3.3 source that's
> >     included with Nmap by passing --with-liblua=included to
> >     configure. Let us know if this fixes the issue for you.
> >
> >     Dan
> >
> >     On Mon, Apr 2, 2018 at 1:24 PM, Bruno <bruno () streamfeed com
> >     <mailto:bruno () streamfeed com>> wrote:
> >
> >         Thanks Daniel Miller for your prompt answer,
> >
> >         I'm attaching the error log. (Not sure if it works for the
> >         dev list. If it doesn't I will reply with the error on clear
> >         text).
> >
> >         Compiling with the "--without-liblua" works flawlessly.
> >
> >         On 04/02/2018 02:42 PM, Daniel Miller wrote:
> > >         Bruno,
> > >
> > >         NSE doesn't make sense outside the context of Nmap, and many
> > >         of the libraries it uses are compiled in to nmap itself.
> > >         However, there shouldn't be any reason that it wouldn't
> > >         compile on OpenWrt. Can you change the package's makefile so
> > >         that it doesn't use --without-liblua in configure and then
> > >         report what actually happens? What are the specific errors
> > >         that happen?
> > >
> > >         Dan
> > >
> > >         On Mon, Apr 2, 2018 at 11:28 AM, Bruno <bruno () streamfeed com
> > >         <mailto:bruno () streamfeed com>> wrote:
> > >
> > >             Is it possible to run NSE scritps, but without the nmap
> > >             scripting?
> > >
> > >             I'm trying to run nmap scripting on OpenWRT, so the
> > >             router let me know if there are vulnerabilities on my
> > >             network to be patched. However, the nmap version for
> > >             OpenWRT is missing scripting support
> > >             (https://github.com/openwrt/packages/issues/4472
> > >             <https://github.com/openwrt/packages/issues/4472>)
> > >
> > >             The scripts are written in lua. So, what I'm planning to
> > >             do is run all the scripts available from lua itself. Do
> > >             I have to rewrite part of NSE or is there an easy way to
> > >             do it? Or is there a way to enable scripting on OpenWRT
> > >             with liblua?
> > >
> > >             Thanks
> > >
> > >
> > >             _______________________________________________
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