15 char exactly

[maxhrc]

it is infeasible
the math is (26+10)^15 = 221073919720733357899776 (very huge number !)
which by the way is even larger than a 64-bit number (2^64 = 18446744073709551616)

see https://hashcat.net/wiki/doku.php?id=mas...m_charsets

The syntax of course would be

Code:

hashcat -m 2500 -a 3 -w 3 --custom-charset1 ?l?d my.hccapx ?1?1?1?1?1?1?1?1?1?1?1?1?1?1?1

You will of course get an "Integer overflow detected" error, because it's just an insane approach of cracking passwords.

Thx Phil..... ok I understand :-( it's impossible in this life :-D 

It's a vodafone router.... that have 15 charset....I assume that it's impossible to crack with bruteforce