from winreg import EnumValue, CloseKey, OpenKey,HKEY_LOCAL_MACHINE

def firewallRules():
    key = OpenKey(HKEY_LOCAL_MACHINE,\
                     r"SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules")

    i = 0
    with open('firewallRules.txt', mode='at', encoding='utf-8') as f:
        while True:
            try:
                name,value, t = EnumValue(key,i)
                f.write(name+' '+value+'\n')  
                i=i+1
            except WindowsError:
                break
        CloseKey(HKEY_LOCAL_MACHINE)
        return None

firewallRules()