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fingerprint.go
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fingerprint.go
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package fp
import (
"encoding/json"
"fmt"
"net"
"sort"
"strconv"
"strings"
"time"
"github.com/pkg/errors"
"github.com/samber/lo"
"github.com/yaklang/yaklang/common/consts"
"github.com/yaklang/yaklang/common/fp/webfingerprint"
log "github.com/yaklang/yaklang/common/log"
"github.com/yaklang/yaklang/common/mutate"
"github.com/yaklang/yaklang/common/netx"
"github.com/yaklang/yaklang/common/utils"
utils2 "github.com/yaklang/yaklang/common/utils"
"github.com/yaklang/yaklang/common/utils/lowhttp"
"github.com/yaklang/yaklang/common/yakgrpc/yakit"
)
type RuleBlock struct {
Probe *NmapProbe
Matched []*NmapMatch
}
type Matcher struct {
Config *Config
wfMatcher *webfingerprint.Matcher
}
type PortState string
func (p *PortState) String() string {
return string(*p)
}
var (
OPEN PortState = "open"
CLOSED PortState = "closed"
UNKNOWN PortState = "unknown"
)
type MatchResult struct {
Target string `json:"target"`
Port int `json:"port"`
State PortState `json:"state"`
Reason string `json:"reason"`
Fingerprint *FingerprintInfo `json:"fingerprint"`
}
func (m *MatchResult) Tidy() {
if m == nil {
return
}
if m.Fingerprint == nil {
return
}
if m.Fingerprint.Proto == "" {
m.Fingerprint.Proto = TCP
}
m.Fingerprint.ServiceName = strings.Join(
utils2.RemoveRepeatedWithStringSlice(strings.Split(m.Fingerprint.ServiceName, "/")),
"/",
)
if m.Fingerprint.Banner == "" && len(m.Fingerprint.HttpFlows) > 0 {
m.Fingerprint.Banner = utils2.EscapeInvalidUTF8Byte(lowhttp.ReplaceHTTPPacketBody(m.Fingerprint.HttpFlows[0].ResponseHeader, m.Fingerprint.HttpFlows[0].ResponseBody, false))
}
}
func (m *MatchResult) Merge(f *MatchResult) {
if m == nil || f == nil {
return
}
if m.State != OPEN && f.State == OPEN {
m.State = OPEN
}
if !(m.Target == f.Target && m.Port == f.Port) {
return
}
if m.Fingerprint == nil {
m.Fingerprint = f.Fingerprint
return
}
if f.Fingerprint == nil {
return
}
m.Fingerprint.CPEs = utils2.RemoveRepeatedWithStringSlice(append(m.Fingerprint.CPEs, f.Fingerprint.CPEs...))
if f.Fingerprint.ServiceName != "" && m.Fingerprint.ServiceName == "" {
m.Fingerprint.Banner = f.Fingerprint.Banner
m.Fingerprint.Raw = f.Fingerprint.Raw
}
if m.Fingerprint.ServiceName != f.Fingerprint.ServiceName {
f.Fingerprint.ServiceName = strings.Trim(f.Fingerprint.ServiceName, "/")
m.Fingerprint.ServiceName = fmt.Sprintf("%v/%v", m.Fingerprint.ServiceName, f.Fingerprint.ServiceName)
}
m.Fingerprint.ServiceName = strings.Trim(m.Fingerprint.ServiceName, "/")
m.Fingerprint.HttpFlows = append(m.Fingerprint.HttpFlows, f.Fingerprint.HttpFlows...)
if f.Fingerprint.CPEFromUrls != nil && m.Fingerprint.CPEFromUrls != nil {
for k, v := range f.Fingerprint.CPEFromUrls {
_, ok := m.Fingerprint.CPEFromUrls[k]
if ok {
m.Fingerprint.CPEFromUrls[k] = append(m.Fingerprint.CPEFromUrls[k], v...)
} else {
m.Fingerprint.CPEFromUrls[k] = v
}
}
}
}
func (m *MatchResult) HaveDialFailed() bool {
return utils2.MatchAnyOfGlob(m.Reason,
"*dial tcp*: i/o timeout",
"*dial tcp* connect: connection refused",
"*connection reset by peer",
)
}
func (m *MatchResult) IsOpen() bool {
if m == nil {
return false
}
return m.State == OPEN
}
func (m *MatchResult) String(schemaForce ...string) string {
schema := "tcp"
if m.Fingerprint != nil {
schema = strings.ToLower(string(m.GetProto()))
}
if len(schemaForce) > 0 {
schema = strings.Join(schemaForce, "+")
}
return fmt.Sprintf("%v://%v\t%5s\t%s", schema, utils2.HostPort(m.Target, m.Port), m.State, m.GetServiceName())
}
func (m *MatchResult) GetCPEs() []string {
if m.Fingerprint == nil {
return nil
}
return m.Fingerprint.CPEs
}
func (m *MatchResult) GetBanner() string {
if m.Fingerprint == nil {
return ""
}
if _, err := strconv.Unquote(m.Fingerprint.Banner); err != nil {
return strconv.Quote(m.Fingerprint.Banner)
} else {
return m.Fingerprint.Banner
}
}
func (m *MatchResult) GetHtmlTitle() string {
if m.Fingerprint == nil {
return ""
}
var titles []string
for _, f := range m.Fingerprint.HttpFlows {
res := utils2.ExtractTitleFromHTMLTitle(string(f.ResponseBody), "")
if res != "" {
titles = append(titles, res)
}
}
return strings.Join(titles, "|")
}
func (m *MatchResult) GetServiceName() string {
return m.getServiceName()
}
func (m *MatchResult) GetResponseRaw() []byte {
if m.Fingerprint == nil {
return nil
}
if len(m.Fingerprint.HttpFlows) > 0 {
flow, err := lo.Last(m.Fingerprint.HttpFlows)
if err != nil {
return nil
}
return lowhttp.ReplaceHTTPPacketBodyFast(flow.ResponseHeader, flow.ResponseBody)
}
return nil
}
func (m *MatchResult) GetRequestRaw() (bool, []byte) {
if m.Fingerprint == nil {
return false, nil
}
if len(m.Fingerprint.HttpFlows) > 0 {
flow, err := lo.Last(m.Fingerprint.HttpFlows)
if err != nil {
return false, nil
}
return flow.IsHTTPS, lowhttp.ReplaceHTTPPacketBodyFast(flow.RequestHeader, flow.RequestBody)
}
return false, nil
}
func (m *MatchResult) GetFuzzRequest() *mutate.FuzzHTTPRequest {
urls := utils2.ParseStringToUrls(m.Target)
if !m.IsOpen() && len(urls) > 0 {
https, reqs, err := lowhttp.ParseUrlToHttpRequestRaw("GET", urls[0])
if err != nil {
return nil
}
freq, _ := mutate.NewFuzzHTTPRequest(reqs, mutate.OptHTTPS(https))
if freq != nil {
return freq
}
return nil
}
var freq *mutate.FuzzHTTPRequest
var err error
https, reqBytes := m.GetRequestRaw()
if reqBytes != nil {
freq, _ = mutate.NewFuzzHTTPRequest(reqBytes, mutate.OptHTTPS(https))
if freq != nil {
return freq
}
}
var targetUrl string
if netx.IsTLSService(m.Target) {
targetUrl = fmt.Sprintf("https://%v", m.Target)
} else {
targetUrl = fmt.Sprintf("http://%v", m.Target)
}
https, reqs, err := lowhttp.ParseUrlToHttpRequestRaw("GET", targetUrl)
if err != nil {
return nil
}
freq, _ = mutate.NewFuzzHTTPRequest(reqs, mutate.OptHTTPS(https))
if freq != nil {
return freq
}
return nil
}
func (m *MatchResult) getServiceName() string {
if m == nil {
return ""
}
if m.Fingerprint == nil {
return ""
}
var fixDefaultSchema string
if m.GetProto() == UDP {
fixDefaultSchema = GetDefaultUDPServiceName(m.Port)
} else {
fixDefaultSchema = GetDefaultTCPServiceName(m.Port)
}
productsVer := make(map[string]string)
products := []string{}
for _, cpe := range m.Fingerprint.CPEs {
cpeInstance, err := webfingerprint.ParseToCPE(cpe)
if err != nil {
continue
}
product := cpeInstance.Product
if product == "*" {
product = m.Fingerprint.ServiceName
}
version := cpeInstance.Version
if version == "*" {
version = ""
}
if versionVer, ok := productsVer[product]; ok || versionVer == "" {
productsVer[product] = version
}
}
for k, v := range productsVer {
if v == "" {
products = append(products, k)
} else {
products = append(products, fmt.Sprintf("%v[%v]", k, v))
}
}
if m.Fingerprint.ServiceName != "" {
products = append(products, m.Fingerprint.ServiceName)
}
products = utils2.RemoveRepeatStringSlice(products)
sort.Strings(products)
if len(products) <= 0 {
products = append(products, fixDefaultSchema)
}
result := strings.Join(products, "/")
if result != "" {
return result
}
return m.Fingerprint.ServiceName
}
func (m *MatchResult) GetProto() TransportProto {
if m.Fingerprint == nil {
return TCP
}
return m.Fingerprint.Proto
}
func (m *MatchResult) GetDomains() []string {
if ret := net.ParseIP(utils2.FixForParseIP(m.Target)); ret == nil {
return []string{m.Target}
} else {
return []string{}
}
}
var FpMatchResultTTLCache = utils.NewTTLCache[*MatchResult](3 * time.Minute)
func SetMatchResultCache(addr string, result *MatchResult) {
FpMatchResultTTLCache.SetWithTTL(addr, result, 3*time.Minute)
}
func databaseCacheKey(addr string) string {
return fmt.Sprintf("DatabaseCache_MatchResult_%v", addr)
}
func SetMatchResultDatabaseCache(addr string, result *MatchResult) {
db := consts.GetGormProfileDatabase()
if db == nil {
log.Error("gorm database failed: empty")
return
}
addr = databaseCacheKey(addr)
raw, err := json.Marshal(result)
if err != nil {
log.Errorf("json marshal matchResult: %s", err)
return
}
err = yakit.SetKeyWithTTL(db, addr, strconv.Quote(string(raw)), 600)
if err != nil {
log.Errorf("set key with ttl failed: %s", err)
}
}
func GetMatchResultDatabaseCache(addr string) *MatchResult {
originAddr := addr
db := consts.GetGormProfileDatabase()
if db == nil {
log.Error("gorm database failed: empty")
return nil
}
addr = databaseCacheKey(addr)
raw := yakit.GetKey(db, addr)
if raw == "" {
return nil
}
rawBytes, err := strconv.Unquote(raw)
if err != nil {
return nil
}
var m MatchResult
err = json.Unmarshal([]byte(rawBytes), &m)
if err != nil {
return nil
}
SetMatchResultDatabaseCache(originAddr, &m)
return &m
}
func GetMatchResultCache(addr string) *MatchResult {
result, ok := FpMatchResultTTLCache.Get(addr)
if !ok {
return nil
}
SetMatchResultCache(addr, result)
return result
}
func NewFingerprintMatcher(rules map[*NmapProbe][]*NmapMatch, config *Config) (*Matcher, error) {
if config == nil {
log.Debugf("build fingerprint match without config, use default")
config = NewConfig()
}
// use default rules
var err error
if len(config.FingerprintRules) <= 0 {
if len(rules) <= 0 {
rules, err = GetDefaultNmapServiceProbeRules()
if err != nil {
return nil, errors.Errorf("get default probe rules failed: %s", err)
}
return nil, errors.New("empty rules is not allowed")
}
config.FingerprintRules = rules
}
var webfingerprintRules []*webfingerprint.WebRule
if len(config.WebFingerprintRules) <= 0 {
webfingerprintRules, err = GetDefaultWebFingerprintRules()
if err != nil {
return nil, errors.Errorf("get default web fingerprint rules failed: %s", err)
}
} else {
webfingerprintRules = config.WebFingerprintRules
}
webMatcher, err := webfingerprint.NewWebFingerprintMatcher(
webfingerprintRules,
config.ActiveMode,
config.WebFingerprintUseAllRules,
)
if err != nil {
return nil, errors.Errorf("build web fingerprint matcher failed: %s", err)
}
matcher := &Matcher{
Config: config,
wfMatcher: webMatcher,
}
return matcher, nil
}
func NewDefaultFingerprintMatcher(config *Config) (*Matcher, error) {
return NewFingerprintMatcher(nil, config)
}