No, I use a Metamask-wallet address I already had and configured MetaMask to use the Binance Smart Chain as well. There are already several posts on how to do that, including one by @edicted.
If you then send ETH from your binance account to that Metamask-wallet, selecting the correct transfer network I indicated above, it automagically shows up. And if you connect that wallet to CubDefi you can use the ETH to buy CUB of BNB or bLeo or whatever else you like.

In MetsMask it look like 'regular' ETH, no wETH or bETH or such.

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