Hey @operator55

I wrote some standalone code that can convert the old blockchain.info wallet (priv:) key base58 format, in to WIF.

You'll need Python 3. Here's the link to the Gist.

https://gist.github.com/Jun-Wang-2018/3105e29e0d61ecf88530c092199371a7#gistcomment-3522248

Hope you find it helpful.