/
gobustervhost.go
266 lines (230 loc) · 6.98 KB
/
gobustervhost.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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
package gobustervhost
import (
"bufio"
"bytes"
"context"
"fmt"
"net"
"net/http"
"net/url"
"strings"
"text/tabwriter"
"github.com/OJ/gobuster/v3/helper"
"github.com/OJ/gobuster/v3/libgobuster"
"github.com/google/uuid"
)
// GobusterVhost is the main type to implement the interface
type GobusterVhost struct {
options *OptionsVhost
globalopts *libgobuster.Options
http *libgobuster.HTTPClient
domain string
normalBody []byte
abnormalBody []byte
}
// NewGobusterVhost creates a new initialized GobusterDir
func NewGobusterVhost(globalopts *libgobuster.Options, opts *OptionsVhost) (*GobusterVhost, error) {
if globalopts == nil {
return nil, fmt.Errorf("please provide valid global options")
}
if opts == nil {
return nil, fmt.Errorf("please provide valid plugin options")
}
g := GobusterVhost{
options: opts,
globalopts: globalopts,
}
basicOptions := libgobuster.BasicHTTPOptions{
Proxy: opts.Proxy,
Timeout: opts.Timeout,
UserAgent: opts.UserAgent,
NoTLSValidation: opts.NoTLSValidation,
RetryOnTimeout: opts.RetryOnTimeout,
RetryAttempts: opts.RetryAttempts,
TLSCertificate: opts.TLSCertificate,
}
httpOpts := libgobuster.HTTPOptions{
BasicHTTPOptions: basicOptions,
FollowRedirect: opts.FollowRedirect,
Username: opts.Username,
Password: opts.Password,
Headers: opts.Headers,
NoCanonicalizeHeaders: opts.NoCanonicalizeHeaders,
Cookies: opts.Cookies,
Method: opts.Method,
}
h, err := libgobuster.NewHTTPClient(&httpOpts)
if err != nil {
return nil, err
}
g.http = h
return &g, nil
}
// Name should return the name of the plugin
func (v *GobusterVhost) Name() string {
return "VHOST enumeration"
}
// PreRun is the pre run implementation of gobusterdir
func (v *GobusterVhost) PreRun(ctx context.Context) error {
// add trailing slash
if !strings.HasSuffix(v.options.URL, "/") {
v.options.URL = fmt.Sprintf("%s/", v.options.URL)
}
urlParsed, err := url.Parse(v.options.URL)
if err != nil {
return fmt.Errorf("invalid url %s: %w", v.options.URL, err)
}
if v.options.Domain != "" {
v.domain = v.options.Domain
} else {
v.domain = urlParsed.Host
}
// request default vhost for normalBody
_, _, _, body, err := v.http.Request(ctx, v.options.URL, libgobuster.RequestOptions{ReturnBody: true})
if err != nil {
return fmt.Errorf("unable to connect to %s: %w", v.options.URL, err)
}
v.normalBody = body
// request non existent vhost for abnormalBody
subdomain := fmt.Sprintf("%s.%s", uuid.New(), v.domain)
_, _, _, body, err = v.http.Request(ctx, v.options.URL, libgobuster.RequestOptions{Host: subdomain, ReturnBody: true})
if err != nil {
return fmt.Errorf("unable to connect to %s: %w", v.options.URL, err)
}
v.abnormalBody = body
return nil
}
// ProcessWord is the process implementation of gobusterdir
func (v *GobusterVhost) ProcessWord(ctx context.Context, word string, progress *libgobuster.Progress) error {
var subdomain string
if v.options.AppendDomain {
subdomain = fmt.Sprintf("%s.%s", word, v.domain)
} else {
// wordlist needs to include full domains
subdomain = word
}
tries := 1
if v.options.RetryOnTimeout && v.options.RetryAttempts > 0 {
// add it so it will be the overall max requests
tries += v.options.RetryAttempts
}
var statusCode int
var size int64
var header http.Header
var body []byte
for i := 1; i <= tries; i++ {
var err error
statusCode, size, header, body, err = v.http.Request(ctx, v.options.URL, libgobuster.RequestOptions{Host: subdomain, ReturnBody: true})
if err != nil {
// check if it's a timeout and if we should try again and try again
// otherwise the timeout error is raised
if netErr, ok := err.(net.Error); ok && netErr.Timeout() && i != tries {
continue
} else if strings.Contains(err.Error(), "invalid control character in URL") {
// put error in error chan so it's printed out and ignore it
// so gobuster will not quit
progress.ErrorChan <- err
continue
} else {
return err
}
}
break
}
// subdomain must not match default vhost and non existent vhost
// or verbose mode is enabled
found := body != nil && !bytes.Equal(body, v.normalBody) && !bytes.Equal(body, v.abnormalBody)
if (found && !helper.SliceContains(v.options.ExcludeLength, int(size))) || v.globalopts.Verbose {
resultStatus := false
if found {
resultStatus = true
}
progress.ResultChan <- Result{
Found: resultStatus,
Vhost: subdomain,
StatusCode: statusCode,
Size: size,
Header: header,
}
}
return nil
}
func (v *GobusterVhost) AdditionalWords(word string) []string {
return []string{}
}
// GetConfigString returns the string representation of the current config
func (v *GobusterVhost) GetConfigString() (string, error) {
var buffer bytes.Buffer
bw := bufio.NewWriter(&buffer)
tw := tabwriter.NewWriter(bw, 0, 5, 3, ' ', 0)
o := v.options
if _, err := fmt.Fprintf(tw, "[+] Url:\t%s\n", o.URL); err != nil {
return "", err
}
if _, err := fmt.Fprintf(tw, "[+] Method:\t%s\n", o.Method); err != nil {
return "", err
}
if _, err := fmt.Fprintf(tw, "[+] Threads:\t%d\n", v.globalopts.Threads); err != nil {
return "", err
}
if v.globalopts.Delay > 0 {
if _, err := fmt.Fprintf(tw, "[+] Delay:\t%s\n", v.globalopts.Delay); err != nil {
return "", err
}
}
wordlist := "stdin (pipe)"
if v.globalopts.Wordlist != "-" {
wordlist = v.globalopts.Wordlist
}
if _, err := fmt.Fprintf(tw, "[+] Wordlist:\t%s\n", wordlist); err != nil {
return "", err
}
if v.globalopts.PatternFile != "" {
if _, err := fmt.Fprintf(tw, "[+] Patterns:\t%s (%d entries)\n", v.globalopts.PatternFile, len(v.globalopts.Patterns)); err != nil {
return "", err
}
}
if o.Proxy != "" {
if _, err := fmt.Fprintf(tw, "[+] Proxy:\t%s\n", o.Proxy); err != nil {
return "", err
}
}
if o.Cookies != "" {
if _, err := fmt.Fprintf(tw, "[+] Cookies:\t%s\n", o.Cookies); err != nil {
return "", err
}
}
if o.UserAgent != "" {
if _, err := fmt.Fprintf(tw, "[+] User Agent:\t%s\n", o.UserAgent); err != nil {
return "", err
}
}
if o.Username != "" {
if _, err := fmt.Fprintf(tw, "[+] Auth User:\t%s\n", o.Username); err != nil {
return "", err
}
}
if v.globalopts.Verbose {
if _, err := fmt.Fprintf(tw, "[+] Verbose:\ttrue\n"); err != nil {
return "", err
}
}
if _, err := fmt.Fprintf(tw, "[+] Timeout:\t%s\n", o.Timeout.String()); err != nil {
return "", err
}
if _, err := fmt.Fprintf(tw, "[+] Append Domain:\t%t\n", v.options.AppendDomain); err != nil {
return "", err
}
if len(o.ExcludeLength) > 0 {
if _, err := fmt.Fprintf(tw, "[+] Exclude Length:\t%s\n", helper.JoinIntSlice(v.options.ExcludeLength)); err != nil {
return "", err
}
}
if err := tw.Flush(); err != nil {
return "", fmt.Errorf("error on tostring: %w", err)
}
if err := bw.Flush(); err != nil {
return "", fmt.Errorf("error on tostring: %w", err)
}
return strings.TrimSpace(buffer.String()), nil
}