Using specific encoder in exploit module

[hdm at metasploit.com (H D Moore)]

It is not possible for an exploit to specify its own encoder -- this is by 
design so that you can use any encoder that happens to work with your 
exploit. The correct way to limit encoders is just by setting the 
Payload->BadChars field to the appropriate value. In the case of a 
payload that must be alphanumeric-only, use the following snippet:

        'Payload' =>
          {
                'Space'     => 614,
                'BadChars'  =>
                  join('', map { $_=chr($_) } (0x00 .. 0x2f)).
                  join('', map { $_=chr($_) } (0x3a .. 0x40)).
                  join('', map { $_=chr($_) } (0x5b .. 0x60)).
                  join('', map { $_=chr($_) } (0x7b .. 0xff)),
          },

-HD

On Thursday 05 January 2006 09:05, mozilla at ids-guide.de wrote:
> Hi,
>
> I need a coding sample for setting a specific encoder in an exploit
> module, I tried this ...
>
> 'Encoder' =>
>   {
>    'Keys' => ['+alphanum'],
>   },
>
> in $info, but doesn't seem to work.
>
> thx ;-)