Whirlpool + salt?

[bsec]

Yes, it's possible. I just told you how. Use -m 6100, and manually append the salt with each attack. Treat the salt as part of the password candidate you're attacking.

For example if the salt is '12345' and you wanted to do a len 6 brute force, you'd use -a 3 ?a?a?a?a?a?a12345

D:\cudaHashcat-1.33\cudaHashcat64.exe -m 6100 -a 3 ?a?a?a?a?a?aHi5
ZFZMeGZ -o D:\cudaHashcat-1.33\cracked.txt D:\cudaHashcat-1.33\hash.txt - I guess i'm stupid, because I couldn't get it to work

The syntax is:
hashcat -options hash.txt mask/word(list|dir)
So here, it is:
D:\cudaHashcat-1.33\cudaHashcat64.exe -m 6100 -a 3 -o D:\cudaHashcat-1.33\cracked.txt D:\cudaHashcat-1.33\hash.txt ?a?a?a?a?a?aHi5ZFZMeGZ

You just need to read the wiki or the --help from your cat.