/
main.go
198 lines (166 loc) · 4.79 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
package main
import (
"bufio"
"crypto/tls"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"net/http"
"net/http/httputil"
"net/url"
"os"
"sync"
"time"
pb "github.com/refraction-networking/conjure/proto"
utls "github.com/refraction-networking/utls"
"golang.org/x/net/http2"
"google.golang.org/protobuf/proto"
)
var (
fingerprints = []utls.ClientHelloID{utls.HelloChrome_62, utls.HelloChrome_72, utls.HelloChrome_83}
dialTimeout = time.Duration(5) * time.Second
)
func HttpGetByHelloID(hostname string, addr string, helloID utls.ClientHelloID) (*http.Response, error) {
config := utls.Config{ServerName: hostname}
dialConn, err := net.DialTimeout("tcp", addr, dialTimeout)
if err != nil {
return nil, fmt.Errorf("net.DialTimeout error: %+v", err)
}
uTlsConn := utls.UClient(dialConn, &config, helloID)
err = uTlsConn.SetReadDeadline(time.Now().Add(10 * time.Second))
if err != nil {
return nil, err
}
defer uTlsConn.Close()
err = uTlsConn.Handshake()
if err != nil {
return nil, fmt.Errorf("uTlsConn.Handshake() error: %+v", err)
}
response, err := httpGetOverConn(uTlsConn, uTlsConn.HandshakeState.ServerHello.AlpnProtocol, hostname)
if err == nil {
response.TLS = &tls.ConnectionState{
Version: uTlsConn.ConnectionState().Version,
CipherSuite: uTlsConn.ConnectionState().CipherSuite}
}
return response, err
}
func httpGetOverConn(conn net.Conn, alpn string, requestHostname string) (*http.Response, error) {
req := &http.Request{
Method: "GET",
URL: &url.URL{Host: requestHostname + "/"},
Header: make(http.Header),
Host: requestHostname,
}
switch alpn {
case "h2":
req.Proto = "HTTP/2.0"
req.ProtoMajor = 2
req.ProtoMinor = 0
tr := http2.Transport{}
cConn, err := tr.NewClientConn(conn)
if err != nil {
return nil, err
}
return cConn.RoundTrip(req)
case "http/1.1", "":
req.Proto = "HTTP/1.1"
req.ProtoMajor = 1
req.ProtoMinor = 1
err := req.Write(conn)
if err != nil {
return nil, err
}
return http.ReadResponse(bufio.NewReader(conn), req)
default:
return nil, fmt.Errorf("unsupported ALPN: %v", alpn)
}
}
func worker(id int, decoys <-chan *pb.TLSDecoySpec, results chan<- string, wg *sync.WaitGroup) {
var rsp *http.Response
var err error
var workerTotal int = 0
defer wg.Done()
for d := range decoys {
workerTotal++
for _, fp := range fingerprints {
requestHostname := d.GetHostname()
requestAddr := d.GetIpAddrStr()
rsp, err = HttpGetByHelloID(requestHostname, requestAddr, fp)
if err != nil {
results <- fmt.Sprintf("#%v [%v]> %s - %s -%s failed: %+v\n",
id, workerTotal, fp.Str(), requestAddr, requestHostname, err)
} else {
results <- fmt.Sprintf("#%v [%v]> %s - %s - %s response: %v - %v - %v - %s\n",
id, workerTotal, fp.Str(), requestAddr, requestHostname, rsp.StatusCode,
rsp.TLS.Version, rsp.TLS.CipherSuite, rsp.Header)
// results <- fmt.Sprintf(out, "#> %s - %s - %s response: %+s\n", fp.Str(), requestAddr, requestHostname, dumpResponseNoBody(response))
}
}
}
fmt.Printf("worker %v shutting down\n", id)
}
func dumpResponseNoBody(response *http.Response) string {
resp, err := httputil.DumpResponse(response, false)
if err != nil {
return fmt.Sprintf("failed to dump response: %v", err)
}
return string(resp)
}
func parseClientConf(fname string) pb.ClientConf {
clientConf := pb.ClientConf{}
buf, err := ioutil.ReadFile(fname)
if err != nil {
log.Fatal("Error reading file:", err)
}
err = proto.Unmarshal(buf, &clientConf)
if err != nil {
log.Fatal("Error parsing ClientConf", err)
}
return clientConf
}
func main() {
var assetsFile = flag.String("f", "ClientConf", "The ClientConf")
var outFilename = flag.String("o", "", "`output` file name to write new/modified config")
var workers = flag.Int("w", 10, "Number of worker threads to spawn")
flag.Parse()
fmt.Printf("Attempting connections for ClientConf (%s) \n", *assetsFile)
if *assetsFile == "" {
fmt.Println("Please provide a clientConf file.")
os.Exit(1)
}
// Parse ClientConf
clientConf := pb.ClientConf{}
clientConf = parseClientConf(*assetsFile)
var allDecoys = clientConf.DecoyList.GetTlsDecoys()
var decoys = make(chan *pb.TLSDecoySpec, len(allDecoys))
var results = make(chan string, len(allDecoys)*len(fingerprints))
var wg sync.WaitGroup
var out io.Writer = os.Stdout
if *outFilename != "" {
f, err := os.OpenFile(*outFilename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
defer f.Close()
out = f
}
for i := 0; i < *workers; i++ {
wg.Add(1)
go worker(i, decoys, results, &wg)
}
for _, decoy := range allDecoys {
decoys <- decoy
}
close(decoys)
var printTotal int = 0
for j := 0; j < len(allDecoys)*len(fingerprints); j++ {
r := <-results
printTotal++
fmt.Fprintf(out, "(%v) %s", printTotal, r)
}
wg.Wait()
}