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https://github.com/cbeuw/Cloak.git
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58 lines
2.6 KiB
Go
58 lines
2.6 KiB
Go
// Firefox 58
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package TLS
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import (
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"encoding/hex"
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"github.com/cbeuw/Cloak/internal/client"
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"github.com/cbeuw/Cloak/internal/util"
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)
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type firefox struct {
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browser
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}
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func (f *firefox) composeExtensions(sta *client.State) []byte {
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var ext [10][]byte
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ext[0] = addExtRec([]byte{0x00, 0x00}, makeServerName(sta)) // server name indication
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ext[1] = addExtRec([]byte{0x00, 0x17}, nil) // extended_master_secret
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ext[2] = addExtRec([]byte{0xff, 0x01}, []byte{0x00}) // renegotiation_info
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suppGroup, _ := hex.DecodeString("0008001d001700180019")
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ext[3] = addExtRec([]byte{0x00, 0x0a}, suppGroup) // supported groups
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ext[4] = addExtRec([]byte{0x00, 0x0b}, []byte{0x01, 0x00}) // ec point formats
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ext[5] = addExtRec([]byte{0x00, 0x23}, client.MakeSessionTicket(sta)) // Session tickets
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APLN, _ := hex.DecodeString("000c02683208687474702f312e31")
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ext[6] = addExtRec([]byte{0x00, 0x10}, APLN) // app layer proto negotiation
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ext[7] = addExtRec([]byte{0x00, 0x05}, []byte{0x01, 0x00, 0x00, 0x00, 0x00}) // status request
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sigAlgo, _ := hex.DecodeString("001604030503060308040805080604010501060102030201")
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ext[8] = addExtRec([]byte{0x00, 0x0d}, sigAlgo) // Signature Algorithms
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ext[9] = addExtRec([]byte{0x00, 0x15}, makeNullBytes(121-len(ext[0]))) // padding
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var ret []byte
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for i := 0; i < 10; i++ {
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ret = append(ret, ext[i]...)
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}
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return ret
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}
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func (f *firefox) composeClientHello(sta *client.State) []byte {
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var clientHello [12][]byte
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clientHello[0] = []byte{0x01} // handshake type
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clientHello[1] = []byte{0x00, 0x01, 0xfc} // length 508
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clientHello[2] = []byte{0x03, 0x03} // client version
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clientHello[3] = client.MakeRandomField(sta) // random
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clientHello[4] = []byte{0x20} // session id length 32
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clientHello[5] = util.PsudoRandBytes(32, sta.Now().UnixNano()) // session id
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clientHello[6] = []byte{0x00, 0x1e} // cipher suites length 28
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cipherSuites, _ := hex.DecodeString("c02bc02fcca9cca8c02cc030c00ac009c013c01400330039002f0035000a")
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clientHello[7] = cipherSuites // cipher suites
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clientHello[8] = []byte{0x01} // compression methods length 1
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clientHello[9] = []byte{0x00} // compression methods
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clientHello[10] = []byte{0x01, 0x95} // extensions length 405
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clientHello[11] = f.composeExtensions(sta) // extensions
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var ret []byte
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for i := 0; i < 12; i++ {
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ret = append(ret, clientHello[i]...)
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}
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return ret
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}
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