Assuming that blockchain.com provides me with my wallet.aes.json (supposedly they keep the wallets backed up on their servers) and I have my wallet ID and password, but not my seed phrase. What software would I use to open/decrypt the wallet? Wouldn't it still ask for email authorization? (Which I am not receiving)
I've used this script -
https://gist.github.com/fcicq/3368495 It will not ask for any authorization.
After decrypting the file you'll have your wallet's private key so you'll be able to open it with another wallet software, like Electrum.