diff --git a/decode-python3.py b/decode-python3.py
new file mode 100644
index 0000000..c5e29b5
--- /dev/null
+++ b/decode-python3.py
@@ -0,0 +1,95 @@
+# -*- coding:utf-8 -*- 
+import sys,os
+import random
+import base64
+import random
+import traceback
+'''  
+# author = "QiAnXin_RedDrip" - modified for Python3 by Florian Roth
+# twitter = @RedDrip7
+# create_date = "2020-12-15"
+# Thanks QiAnXin CERT for the discovery of decodeable DGA domains
+'''
+
+def Int2Hex(value,format):
+	#format 可以是2/4/8
+	hexStr = ""
+	hexStr = hex(value)
+	if(len(hexStr) != format+2):
+		zero = format+2 - len(hexStr)
+		for i in range(zero):
+			hexStr = hexStr[:2] + '0' + hexStr[2:]
+	return hexStr[2:]
+
+'''OrionImprovementBusinessLayer.CryptoHelper.Base64Decode'''
+def Encode(tring):
+	text = "rq3gsalt6u1iyfzop572d49bnx8cvmkewhj"
+	text2 = "0_-."
+	text3 = ""
+	#print random.randint()
+	for i in range(len(tring)):
+		ch = tring[i]
+		tx_index = -1
+		tx2_index = -1
+		if ch in text2:
+			tx2_index = text2.find(ch)
+			text3 = text3 + text2[0] + text[tx2_index + (random.randint(0,8) % (len(text) / len(text2))) * len(text2)]
+		else:
+			tx_index = text.find(ch)
+			text3 = text3+text[(tx_index + 4) % len(text)]
+
+	return text3
+
+'''OrionImprovementBusinessLayer.CryptoHelper.Base64Decode-decode'''
+def Decode(string):
+	text = "rq3gsalt6u1iyfzop572d49bnx8cvmkewhj"
+	text2 = "0_-."
+	retstring = ""
+	flag = False
+	for i in range(len(string)):
+		ch = string[i]
+		tx_index = -1
+		tx2_index = -1
+		if flag:
+			t1i = text.find(ch)
+			x = t1i - ((random.randint(0,8) % (len(text) / len(text2))) * len(text2))
+			retstring = retstring+text2[int(x % len(text2))]
+			flag = False
+			continue
+		if ch in text2:
+			tx2_index = text2.find(ch)
+			flag = True
+			pass
+		else:
+			tx_index = text.find(ch)
+			oindex = tx_index - 4
+			retstring = retstring+text[oindex % len(text)]
+
+		pass
+	return retstring
+
+#print Encode("qingmei-inc.com")
+#print Decode("aovthro08ove0ge2h")
+
+'''
+  1fik67gkncg86q6daovthro0love0oe2.appsync-api.us-west-2.avsvmcloud.com
+  this.guid  --> 1fik67gkncg86q6
+  单个字符：  d
+  域： qingmei-inc.com   --- > aovthro0love0oe2h  但是由于取的是this.dnStrLower而不是this.dnStr，会吞掉一部分字符,所以最终"h"被吞掉了
+
+'''
+
+#在有域的主机中，走GetPreviousString()模式, 拼接方式： CreateSecureString(this.guid, true) + 一个字符 + this.dnStrLower + ".appsync-api.us-west-2.avsvmcloud.com"
+for line in sys.stdin:
+	data = line.rstrip().split(".")[0]
+	if len(data) < 16:
+		continue
+	string = data[16:] #前十六字节： this.guid + 一个字符
+	if "0" not in string:  #如果没有0，说明没有“0.-_”这几个特殊字符，暂时解不开
+		continue
+	try:
+		comp = Decode(string)
+		print("%s\t\t\t%s" % (line.rstrip(),comp))
+	except:
+		traceback.print_exc()
+		pass