From 32333ebcb6ac4786ce84c594dcf528c242713635 Mon Sep 17 00:00:00 2001 From: Jean-Louis Huynen Date: Tue, 5 Feb 2019 16:26:44 +0100 Subject: [PATCH] squash wip --- d4-tlsf.go | 7 +- d4tls/d4tls_test.go | 224 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 226 insertions(+), 5 deletions(-) create mode 100644 d4tls/d4tls_test.go diff --git a/d4-tlsf.go b/d4-tlsf.go index 25a0c62..e77639a 100644 --- a/d4-tlsf.go +++ b/d4-tlsf.go @@ -183,17 +183,14 @@ func (t *tcpStream) ReassembledSG(sg reassembly.ScatterGather, ac reassembly.Ass data := sg.Fetch(length) if t.isTLS { if length > 0 { - // We can't rely on TLS length field has there can be several successive Record Layers - // We attempt to decode, and if it fails, we keep the slice for later. - // Now we attempts Extended TLS decoding + // We attempt to decode TLS tls := &etls.ETLS{} var decoded []gopacket.LayerType p := gopacket.NewDecodingLayerParser(etls.LayerTypeETLS, tls) p.DecodingLayerParserOptions.IgnoreUnsupported = true - // First we check if the packet is fragmented err := p.DecodeLayers(data, &decoded) if err != nil { - // If it's malformed as it we keep for next round + // If it's fragmented we keep for next round sg.KeepFrom(0) } else { //Debug("TLS: %s\n", gopacket.LayerDump(tls)) diff --git a/d4tls/d4tls_test.go b/d4tls/d4tls_test.go new file mode 100644 index 0000000..3bb2f88 --- /dev/null +++ b/d4tls/d4tls_test.go @@ -0,0 +1,224 @@ +package d4tls + +import ( + "testing" + "time" + + _ "github.com/D4-project/sensor-d4-tls-fingerprinting/etls" + "github.com/google/gopacket" +) + +var tlss = &TLSSession{} +var tls = etls.ETLS{} + +var d4ClientHelloPacket = []byte{ + 0x16, 0x03, 0x01, 0x00, 0x89, 0x01, 0x00, 0x00, 0x85, 0x03, 0x03, 0x49, 0xdd, + 0x95, 0x76, 0x1f, 0xd8, 0x43, 0x9c, 0xf4, 0x66, 0xd5, 0xf0, 0x8c, 0xcb, 0x37, + 0xd1, 0x55, 0xe6, 0x99, 0x1d, 0x29, 0x07, 0xe5, 0xcf, 0xdb, 0x55, 0x53, 0xc8, + 0xc3, 0xbc, 0x73, 0x27, 0x00, 0x00, 0x20, 0xc0, 0x2f, 0xc0, 0x30, 0xc0, 0x2b, + 0xc0, 0x2c, 0xcc, 0xa8, 0xcc, 0xa9, 0xc0, 0x13, 0xc0, 0x09, 0xc0, 0x14, 0xc0, + 0x0a, 0x00, 0x9c, 0x00, 0x9d, 0x00, 0x2f, 0x00, 0x35, 0xc0, 0x12, 0x00, 0x0a, + 0x01, 0x00, 0x00, 0x3c, 0x00, 0x05, 0x00, 0x05, 0x01, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x0a, 0x00, 0x0a, 0x00, 0x08, 0x00, 0x1d, 0x00, 0x17, 0x00, 0x18, 0x00, + 0x19, 0x00, 0x0b, 0x00, 0x02, 0x01, 0x00, 0x00, 0x0d, 0x00, 0x12, 0x00, 0x10, + 0x04, 0x01, 0x04, 0x03, 0x05, 0x01, 0x05, 0x03, 0x06, 0x01, 0x06, 0x03, 0x02, + 0x01, 0x02, 0x03, 0xff, 0x01, 0x00, 0x01, 0x00, 0x00, 0x12, 0x00, 0x00, +} + +var d4ServerHelloPacket = []byte{ + + 0x16, 0x03, 0x03, 0x00, 0x59, 0x02, 0x00, 0x00, 0x55, 0x03, 0x03, 0x6a, 0xf0, + 0x87, 0x47, 0xfb, 0xce, 0xc4, 0xde, 0x24, 0xcb, 0x49, 0x48, 0xdf, 0x1d, 0x71, + 0x8e, 0xb5, 0xae, 0xf1, 0x9c, 0x7f, 0x0f, 0xcb, 0x39, 0xfd, 0x51, 0xcc, 0x9b, + 0x06, 0x1f, 0x79, 0xac, 0x20, 0x79, 0x0d, 0x72, 0xf7, 0xc9, 0x40, 0x83, 0xf2, + 0x95, 0xdf, 0xcc, 0xec, 0xc5, 0xd2, 0x08, 0xbf, 0x71, 0x84, 0xfd, 0xcf, 0x79, + 0xe0, 0x5f, 0x63, 0x06, 0x15, 0x49, 0x01, 0x2b, 0x6b, 0x7e, 0xba, 0xc0, 0x30, + 0x00, 0x00, 0x0d, 0xff, 0x01, 0x00, 0x01, 0x00, 0x00, 0x0b, 0x00, 0x04, 0x03, + 0x00, 0x01, 0x02, 0x16, 0x03, 0x03, 0x05, 0x4d, 0x0b, 0x00, 0x05, 0x49, 0x00, + 0x05, 0x46, 0x00, 0x05, 0x43, 0x30, 0x82, 0x05, 0x3f, 0x30, 0x82, 0x03, 0x27, + 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x09, 0x00, 0xe9, 0xd2, 0x5f, 0x88, 0x34, + 0xb2, 0x95, 0xce, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, + 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30, 0x4f, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, + 0x55, 0x04, 0x06, 0x13, 0x02, 0x4c, 0x55, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, + 0x55, 0x04, 0x08, 0x0c, 0x02, 0x4c, 0x55, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, + 0x55, 0x04, 0x07, 0x0c, 0x0a, 0x4c, 0x75, 0x78, 0x65, 0x6d, 0x62, 0x6f, 0x75, + 0x72, 0x67, 0x31, 0x0e, 0x30, 0x0c, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x05, + 0x53, 0x4d, 0x49, 0x4c, 0x45, 0x31, 0x0e, 0x30, 0x0c, 0x06, 0x03, 0x55, 0x04, + 0x0b, 0x0c, 0x05, 0x43, 0x49, 0x52, 0x43, 0x4c, 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0xd2, 0x2c, 0x19, 0xdd, + 0xc5, 0x66, 0x16, 0x03, 0x03, 0x00, 0x04, 0x0e, 0x00, 0x00, 0x00, +} + +var serverHello = d4ServerHelloPacket[:94] +var certificateRecord = d4ServerHelloPacket[94:1456] + +// Rest of the packet is: +// Server Key Exchange[1456:2017] +// Server Hello Done[2017:] + +func TestJA3(t *testing.T) { + var decoded []gopacket.LayerType + p := gopacket.NewDecodingLayerParser(etls.LayerTypeETLS, &tls) + err := p.DecodeLayers(d4ClientHelloPacket, &decoded) + if err != nil { + t.Fail() + } else if decoded[0] == etls.LayerTypeETLS { + if etls.Handshake != nil { + for _, etlsrecord := range etls.Handshake { + if etlsrecord.ETLSHandshakeMsgType == 1 { + // Client Hello + tlss.PopulateClientHello(etlsrecord.ETLSHandshakeMsgType, "", "", "", "", time.Now()) + tlss.D4Fingerprinting("ja3") + } + } + } + } +} + +func TestJA3s(t *testing.T) { + +} + +func TestTLSH(t *testing.T) { + +} + +func TestGreaseExclusoin(t *testing.T) { + +}