Nmap Development: Re: [NSE + NSELib] Netbios and SMB [stable!]

[Ron <ron () skullsecurity net>]

Sven Klemm wrote:
> Sven Klemm wrote:
> I added support for encryption and decryption to the openssl bindings.
> Here are the signatures of all the new functions:
>
> openssl.md2( string message )
> openssl.md4( string message )
> openssl.md5( string message )
> openssl.sha1( string message )
> openssl.ripemd160( string message )
> openssl.digest( string algorithm, string message )
> openssl.hmac( string algorithm, string key, string message )
> openssl.encrypt( string algorithm, string key, string iv, string data,
> bool padding = false )
> openssl.decrypt( string algorithm, string key, string iv, string data,
> bool padding = false )
> openssl.supported_ciphers()
> openssl.supported_digests()
>
> The algorithm parameter is a string like "md5", "sha256", "des",
> "blowfish", etc. openssl.supported_ciphers() and
> openssl.supported_digests() return the list of supported algorithms.
Hey Sven,

I got the MD4() stuff working, and it's working well. But I'm having a
problem with the DES(), and it's probably my own fault for not knowing
OpenSSL well enough. I'm trying to encrypt the string "KGS! () #$%" using
the key "part1" (which is a 7-character string). But it's returning
'nil'. Am I doing this wrong, and/or is there a way to tell what I'm
doing incorrectly?

The 7-character string should have the parity bits set and become a
8-character key, which is used to encrypt the constant string. That's
how I understand it to work, anyways.

Here's the relevant code:
    return openssl.encrypt("DES-ECB", part1, nil, "KGS! () #$%", false)

Thanks!
Ron

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