how do I crack truecrypt containers that were made using Whirlpool?

[atom]

oclHashcat supports all Truecrypt features. Use the following mode:

62XY = TrueCrypt 5.0+
X = 1 = PBKDF2-HMAC-RipeMD160
X = 2 = PBKDF2-HMAC-SHA512
X = 3 = PBKDF2-HMAC-Whirlpool
X = 4 = PBKDF2-HMAC-RipeMD160 + boot-mode
Y = 1 = XTS 512 bit (Ciphers: AES or Serpent or Twofish)
Y = 2 = XTS 1024 bit (Ciphers: AES or Serpent or Twofish or AES-Twofish or Serpent-AES or Twofish-Serpent)
Y = 3 = XTS 1536 bit (Ciphers: All)

Note the closer you set it to your known setting the faster it becomes