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https://github.com/bettercap/bettercap
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SSLSTRIP - Adding the ability to choose how domains are spoofed
This commit is contained in:
Petitoto
parent
e795caa334
commit
a8f10b6333
4 changed files with 45 additions and 30 deletions
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@ -54,9 +54,9 @@ func NewHttpProxy(s *session.Session) *HttpProxy {
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"false",
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"Enable or disable SSL stripping."))
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mod.AddParam(session.NewBoolParameter("http.proxy.sslstrip.useIDN",
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"false",
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"Use an Internationalized Domain Name to bypass HSTS. Otherwise, double the last TLD's character"))
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mod.AddParam(session.NewStringParameter("http.proxy.sslstrip.replacements",
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"com:corn net:nel org:orq", "(.*:.*\\s*$)+",
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"Space separated list of '<original_chars>:<stripped_chars>', and ordered by priority. Use '*' for any domain. Internationalized Domain Names are allowed. If the domain to strip isn't found in this parameter, the last char of the top-level domain will be duplicated."))
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mod.AddHandler(session.NewModuleHandler("http.proxy on", "",
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"Start HTTP proxy.",
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@ -95,7 +95,7 @@ func (mod *HttpProxy) Configure() error {
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var doRedirect bool
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var scriptPath string
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var stripSSL bool
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var useIDN bool
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var replacements string
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var jsToInject string
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var blacklist string
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var whitelist string
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@ -114,7 +114,7 @@ func (mod *HttpProxy) Configure() error {
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return err
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} else if err, stripSSL = mod.BoolParam("http.proxy.sslstrip"); err != nil {
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return err
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} else if err, useIDN = mod.BoolParam("http.proxy.sslstrip.useIDN"); err != nil {
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} else if err, replacements = mod.StringParam("http.proxy.sslstrip.replacements"); err != nil {
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return err
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} else if err, jsToInject = mod.StringParam("http.proxy.injectjs"); err != nil {
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return err
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@ -127,7 +127,7 @@ func (mod *HttpProxy) Configure() error {
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mod.proxy.Blacklist = str.Comma(blacklist)
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mod.proxy.Whitelist = str.Comma(whitelist)
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error := mod.proxy.Configure(address, proxyPort, httpPort, doRedirect, scriptPath, jsToInject, stripSSL, useIDN)
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error := mod.proxy.Configure(address, proxyPort, httpPort, doRedirect, scriptPath, jsToInject, stripSSL, replacements)
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// save stripper to share it with other http(s) proxies
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mod.State.Store("stripper", mod.proxy.Stripper)
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@ -77,7 +77,7 @@ func NewHTTPProxy(s *session.Session, tag string) *HTTPProxy {
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Name: "http.proxy",
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Proxy: goproxy.NewProxyHttpServer(),
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Sess: s,
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Stripper: NewSSLStripper(s, false, false),
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Stripper: NewSSLStripper(s, false, ""),
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isTLS: false,
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doRedirect: true,
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Server: nil,
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@ -170,7 +170,7 @@ func (p *HTTPProxy) shouldProxy(req *http.Request) bool {
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}
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func (p *HTTPProxy) Configure(address string, proxyPort int, httpPort int, doRedirect bool, scriptPath string,
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jsToInject string, stripSSL bool, useIDN bool) error {
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jsToInject string, stripSSL bool, replacements string) error {
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var err error
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// check if another http(s) proxy is using sslstrip and merge strippers
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@ -192,7 +192,7 @@ func (p *HTTPProxy) Configure(address string, proxyPort int, httpPort int, doRed
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}
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}
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p.Stripper.Enable(stripSSL, useIDN)
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p.Stripper.Enable(stripSSL, replacements)
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p.Address = address
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p.doRedirect = doRedirect
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p.jsHook = ""
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@ -297,8 +297,8 @@ func (p *HTTPProxy) TLSConfigFromCA(ca *tls.Certificate) func(host string, ctx *
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func (p *HTTPProxy) ConfigureTLS(address string, proxyPort int, httpPort int, doRedirect bool, scriptPath string,
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certFile string,
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keyFile string, jsToInject string, stripSSL bool, useIDN bool) (err error) {
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if err = p.Configure(address, proxyPort, httpPort, doRedirect, scriptPath, jsToInject, stripSSL, useIDN); err != nil {
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keyFile string, jsToInject string, stripSSL bool, replacements string) (err error) {
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if err = p.Configure(address, proxyPort, httpPort, doRedirect, scriptPath, jsToInject, stripSSL, replacements); err != nil {
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return err
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}
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@ -30,7 +30,7 @@ var (
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type SSLStripper struct {
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enabled bool
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useIDN bool
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replacements string
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session *session.Session
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cookies *CookieTracker
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hosts *HostTracker
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@ -38,16 +38,16 @@ type SSLStripper struct {
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pktSourceChan chan gopacket.Packet
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}
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func NewSSLStripper(s *session.Session, enabled bool, useIDN bool) *SSLStripper {
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func NewSSLStripper(s *session.Session, enabled bool, replacements string) *SSLStripper {
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strip := &SSLStripper{
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enabled: false,
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useIDN: false,
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enabled: enabled,
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replacements: replacements,
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cookies: NewCookieTracker(),
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hosts: NewHostTracker(),
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session: s,
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handle: nil,
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}
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strip.Enable(enabled, useIDN)
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strip.Enable(enabled, replacements)
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return strip
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}
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@ -70,7 +70,7 @@ func (s *SSLStripper) onPacket(pkt gopacket.Packet) {
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domain := string(q.Name)
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original := s.hosts.Unstrip(domain)
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if original != nil && original.Address != nil {
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redir, who := dns_spoof.DnsReply(s.session, 1024, pkt, eth, udp, domain, original.Address, dns, eth.SrcMAC)
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redir, who := dns_spoof.DnsReply(s.session, 5, pkt, eth, udp, domain, original.Address, dns, eth.SrcMAC)
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if redir != "" && who != "" {
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log.Debug("[%s] Sending spoofed DNS reply for %s %s to %s.", tui.Green("dns"), tui.Red(domain), tui.Dim(redir), tui.Bold(who))
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}
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@ -79,9 +79,9 @@ func (s *SSLStripper) onPacket(pkt gopacket.Packet) {
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}
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}
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func (s *SSLStripper) Enable(enabled bool, useIDN bool) {
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func (s *SSLStripper) Enable(enabled bool, replacements string) {
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s.enabled = enabled
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s.useIDN = useIDN
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s.replacements = replacements
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if enabled && s.handle == nil {
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var err error
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@ -141,9 +141,24 @@ func (s *SSLStripper) processURL(url string) string {
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if iPort == -1 {
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iPort = iEndHost
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}
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if s.useIDN {
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// add an international character to the domain name & strip HTTPS port (if any)
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url = url[:iPort] + "ノ" + url[iEndHost:]
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// search for domain's part to replace according to the settings
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replacement := []string{}
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for _, r := range strings.Fields(s.replacements) {
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rep := strings.Split(r, ":")
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if rep[0] == "*" {
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rep[0] = url[:iPort]
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}
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if strings.Contains(url[:iPort], rep[0]) {
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replacement = rep
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break
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}
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}
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if len(replacement) != 0{
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// replace domain according to the settings & strip HTTPS port (if any)
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url = url[:iPort] + url[iEndHost:]
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iReplacement := strings.LastIndex(url, replacement[0])
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replaceto := strings.ReplaceAll(replacement[1], "*", replacement[0])
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url = url[:iReplacement] + replaceto + url[iReplacement+len(replacement[0]):]
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} else {
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// double the last TLD's character & strip HTTPS port (if any)
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url = url[:iPort] + string(url[iPort-1]) + url[iEndHost:]
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@ -247,8 +262,8 @@ func (s *SSLStripper) Process(res *http.Response, ctx *goproxy.ProxyCtx) {
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newHost := location.Host
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newURL := location.String()
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// are we getting redirected from http to https?
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if orig.Scheme == "http" && location.Scheme == "https" {
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// are we getting redirected to https?
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if location.Scheme == "https" {
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log.Info("[%s] Got redirection from HTTP to HTTPS: %s -> %s", tui.Green("sslstrip"), tui.Yellow("http://"+origHost), tui.Bold("https://"+newHost))
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@ -41,9 +41,9 @@ func NewHttpsProxy(s *session.Session) *HttpsProxy {
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"false",
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"Enable or disable SSL stripping."))
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mod.AddParam(session.NewBoolParameter("https.proxy.sslstrip.useIDN",
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"false",
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"Use an Internationalized Domain Name to bypass HSTS. Otherwise, double the last TLD's character"))
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mod.AddParam(session.NewStringParameter("http.proxy.sslstrip.replacements",
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"com:corn net:nel org:orq", "(.*:.*\\s*$)+",
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"Space separated list of '<original_chars>:<stripped_chars>', and ordered by priority. Use '*' for any domain. You can use Internationalized Domain Names. If the domain to strip isn't found in this parameter, the last char of the top-level domain will be duplicated."))
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mod.AddParam(session.NewStringParameter("https.proxy.injectjs",
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"",
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@ -112,7 +112,7 @@ func (mod *HttpsProxy) Configure() error {
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var certFile string
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var keyFile string
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var stripSSL bool
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var useIDN bool
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var replacements string
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var jsToInject string
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var whitelist string
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var blacklist string
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@ -129,7 +129,7 @@ func (mod *HttpsProxy) Configure() error {
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return err
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} else if err, stripSSL = mod.BoolParam("https.proxy.sslstrip"); err != nil {
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return err
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} else if err, useIDN = mod.BoolParam("https.proxy.sslstrip.useIDN"); err != nil {
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} else if err, replacements = mod.StringParam("https.proxy.sslstrip.replacements"); err != nil {
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return err
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} else if err, certFile = mod.StringParam("https.proxy.certificate"); err != nil {
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return err
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@ -170,7 +170,7 @@ func (mod *HttpsProxy) Configure() error {
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}
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error := mod.proxy.ConfigureTLS(address, proxyPort, httpPort, doRedirect, scriptPath, certFile, keyFile, jsToInject,
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stripSSL, useIDN)
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stripSSL, replacements)
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// save stripper to share it with other http(s) proxies
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mod.State.Store("stripper", mod.proxy.Stripper)
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