Пример #1
0
    def bad_sign_packet(self, packet, key_name):
        '''Add bad signature for a packet by bitflipping
        the final byte in the MAC'''

        mac_list = [ord(x) for x in list("badmac")]

        rdata = dns.tsig_record()
        rdata.algorithm_name = "gss-tsig"
        rdata.time_prefix = 0
        rdata.time = int(time.time())
        rdata.fudge = 300
        rdata.original_id = packet.id
        rdata.error = 0
        rdata.other_size = 0
        rdata.mac = mac_list
        rdata.mac_size = len(mac_list)

        r = dns.res_rec()
        r.name = key_name
        r.rr_type = dns.DNS_QTYPE_TSIG
        r.rr_class = dns.DNS_QCLASS_ANY
        r.ttl = 0
        r.length = 0xffff
        r.rdata = rdata

        additional = [r]
        packet.additional = additional
        packet.arcount = 1
Пример #2
0
    def bad_sign_packet(self, packet, key_name):
        '''Add bad signature for a packet by bitflipping
        the final byte in the MAC'''

        mac_list = [ord(x) for x in list("badmac")]

        rdata = dns.tsig_record()
        rdata.algorithm_name = "gss-tsig"
        rdata.time_prefix = 0
        rdata.time = int(time.time())
        rdata.fudge = 300
        rdata.original_id = packet.id
        rdata.error = 0
        rdata.other_size = 0
        rdata.mac = mac_list
        rdata.mac_size = len(mac_list)

        r = dns.res_rec()
        r.name = key_name
        r.rr_type = dns.DNS_QTYPE_TSIG
        r.rr_class = dns.DNS_QCLASS_ANY
        r.ttl = 0
        r.length = 0xffff
        r.rdata = rdata

        additional = [r]
        packet.additional = additional
        packet.arcount = 1
Пример #3
0
    def sign_packet(self, packet, key_name):
        "Sign a packet, calculate a MAC and add TSIG record"
        packet_data = ndr.ndr_pack(packet)

        fake_tsig = dns.fake_tsig_rec()
        fake_tsig.name = key_name
        fake_tsig.rr_class = dns.DNS_QCLASS_ANY
        fake_tsig.ttl = 0
        fake_tsig.time_prefix = 0
        fake_tsig.time = int(time.time())
        fake_tsig.algorithm_name = "gss-tsig"
        fake_tsig.fudge = 300
        fake_tsig.error = 0
        fake_tsig.other_size = 0
        fake_tsig_packet = ndr.ndr_pack(fake_tsig)

        data = packet_data + fake_tsig_packet
        mac = self.g.sign_packet(data, data)
        mac_list = [ord(x) for x in list(mac)]

        rdata = dns.tsig_record()
        rdata.algorithm_name = "gss-tsig"
        rdata.time_prefix = 0
        rdata.time = fake_tsig.time
        rdata.fudge = 300
        rdata.original_id = packet.id
        rdata.error = 0
        rdata.other_size = 0
        rdata.mac = mac_list
        rdata.mac_size = len(mac_list)

        r = dns.res_rec()
        r.name = key_name
        r.rr_type = dns.DNS_QTYPE_TSIG
        r.rr_class = dns.DNS_QCLASS_ANY
        r.ttl = 0
        r.length = 0xffff
        r.rdata = rdata

        additional = [r]
        packet.additional = additional
        packet.arcount = 1

        return mac
Пример #4
0
    def sign_packet(self, packet, key_name):
        "Sign a packet, calculate a MAC and add TSIG record"
        packet_data = ndr.ndr_pack(packet)

        fake_tsig = dns.fake_tsig_rec()
        fake_tsig.name = key_name
        fake_tsig.rr_class = dns.DNS_QCLASS_ANY
        fake_tsig.ttl = 0
        fake_tsig.time_prefix = 0
        fake_tsig.time = int(time.time())
        fake_tsig.algorithm_name = "gss-tsig"
        fake_tsig.fudge = 300
        fake_tsig.error = 0
        fake_tsig.other_size = 0
        fake_tsig_packet = ndr.ndr_pack(fake_tsig)

        data = packet_data + fake_tsig_packet
        mac = self.g.sign_packet(data, data)
        mac_list = [ord(x) for x in list(mac)]

        rdata = dns.tsig_record()
        rdata.algorithm_name = "gss-tsig"
        rdata.time_prefix = 0
        rdata.time = fake_tsig.time
        rdata.fudge = 300
        rdata.original_id = packet.id
        rdata.error = 0
        rdata.other_size = 0
        rdata.mac = mac_list
        rdata.mac_size = len(mac_list)

        r = dns.res_rec()
        r.name = key_name
        r.rr_type = dns.DNS_QTYPE_TSIG
        r.rr_class = dns.DNS_QCLASS_ANY
        r.ttl = 0
        r.length = 0xffff
        r.rdata = rdata

        additional = [r]
        packet.additional = additional
        packet.arcount = 1

        return mac