I am having difficulty creating a password list with crunch with the following parameters, starts with 5ABCD5 as first 6 characters all the time with a total of 12 characters with 7th character always a digit and the last 6 characters totally random uppercase and digits all the time.
I started like follows "crunch 12 12 -o START -b 100mb -t 5ABCD5%"
I can not find out how to find a symbol to tell crunch for mixed uppercase and numeric for last 5 characters.