I have had a look at the forum and found the following threads
https://bitcointalk.org/index.php?topic=85495.0
https://bitcointalk.org/index.php?topic=513726.0
https://bitcointalk.org/index.php?topic=2852348.0
https://bitcointalk.org/index.php?topic=2695032.0
https://bitcointalk.org/index.php?topic=360183.0

Haven't really found a way to do that myself though. Isn't there an online tool where I can just enter the chars that I have got, and it will give me back all the PKs of wallets with at least 0.01 eth in them? That would be really useful.

Otherwise other suggestions you have?