is there any way to let bitcrack work with octal and not hexdecimal to create and check the adresses?
IIRC it's not possible unless you modify the source code to support octal
and one more questions why in base58 the code uses "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz" why the IO l and 0 (zero) is missing?
Because those 4 character are visually similar. Here's information from
https://en.bitcoin.it/wiki/Base58Check_encoding#Background// Why base-58 instead of standard base-64 encoding?
// - Don't want 0OIl characters that look the same in some fonts and
// could be used to create visually identical looking account numbers.
// - A string with non-alphanumeric characters is not as easily accepted as an account number.
// - E-mail usually won't line-break if there's no punctuation to break at.
// - Doubleclicking selects the whole number as one word if it's all alphanumeric.