Using hashcat (GPU) with simple hash function

[bopfactor]

Hello, I need to find a string from a hash generated with this simple function:

Code:

uint64_t hash_func(const char *s, size_t len)
{
    uint64_t hash = 0;

    for (size_t i = 0; i < len; ++i)
        hash += (s[i] * s[i] * s[i] * s[i] * s[i]);

    return (hash);
}

Is there any way I could use hashcat with GPU calculations to find the string ? Or if you know any other tool with fast GPU calculations in which I can plug this function I'd be happy to know.

Thanks!