Add OS detection for logging. Windows < 10 doesn't support ANSI escape codes

Author: Etienne Stalmans

README.md

@@ -2,7 +2,10 @@
 
 Ruler is a tool that allows you to interact with Exchange servers remotely, through either the MAPI/HTTP or RPC/HTTP protocol. The main aim is abuse the client-side Outlook features and gain a shell remotely.
 
-The full low-down on how Ruler was implemented and some background regarding MAPI can be found in our blog posts: [Ruler release], [Pass the Hash with Ruler], [Outlook forms and shells].
+The full low-down on how Ruler was implemented and some background regarding MAPI can be found in our blog posts:
+* [Ruler release]
+* [Pass the Hash with Ruler]
+* [Outlook forms and shells].
 
 For a demo of it in action: [Ruler on YouTube]
 

utils/logging.go

@@ -3,6 +3,7 @@ package utils
 import (
 	"io"
 	"log"
+	"runtime"
 )
 
 var (
@@ -22,15 +23,28 @@ func Init(
 	infoHandle io.Writer,
 	warningHandle io.Writer,
 	errorHandle io.Writer) {
+	if runtime.GOOS == "windows" {
+		Trace = log.New(traceHandle, "[*] ", 0)
+		Info = log.New(infoHandle, "[+] ", 0)
+		Clear = log.New(infoHandle, "    ", 0)
+		Debug = log.New(warningHandle, " ", 0)
+		Fail = log.New(infoHandle, "[x] ", 0)
+		Question = log.New(infoHandle, "[?] ", 0)
+		Warning = log.New(warningHandle,
+			"[WARNING] ", 0)
+		Error = log.New(errorHandle,
+			"ERROR: ", log.Ldate|log.Ltime)
 
-	Trace = log.New(traceHandle, "\033[33m[*] \033[0m", 0)
-	Info = log.New(infoHandle, "\033[32m[+] \033[0m", 0)
-	Clear = log.New(infoHandle, "    ", 0)
-	Debug = log.New(warningHandle, " ", 0)
-	Fail = log.New(infoHandle, "\033[91m[x] \033[0m", 0)
-	Question = log.New(infoHandle, "\033[91m[?] \033[0m", 0)
-	Warning = log.New(warningHandle,
-		"\033[91m[WARNING] \033[0m", 0)
-	Error = log.New(errorHandle,
-		"\033[31mERROR\033[0m: ", log.Ldate|log.Ltime)
+	} else {
+		Trace = log.New(traceHandle, "\033[33m[*] \033[0m", 0)
+		Info = log.New(infoHandle, "\033[32m[+] \033[0m", 0)
+		Clear = log.New(infoHandle, "    ", 0)
+		Debug = log.New(warningHandle, " ", 0)
+		Fail = log.New(infoHandle, "\033[91m[x] \033[0m", 0)
+		Question = log.New(infoHandle, "\033[91m[?] \033[0m", 0)
+		Warning = log.New(warningHandle,
+			"\033[91m[WARNING] \033[0m", 0)
+		Error = log.New(errorHandle,
+			"\033[31mERROR\033[0m: ", log.Ldate|log.Ltime)
+	}
 }