diff --git a/scripts/dec.py b/scripts/dec.py
new file mode 100644
index 0000000..cd591f9
--- /dev/null
+++ b/scripts/dec.py
@@ -0,0 +1,60 @@
+import string
+data = [
+0xf1, 0xd0, 0x01, 0x18, 0xd1, 0x00, 0x00, 0x02, 0x11, 0x0a, 0x01, 0x60, 0x0c, 0x01, 0x00, 0x00,
+0x4c, 0x31, 0x67, 0x4e, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x00, 0x01, 0x01, 0x01, 0x72, 0x6a, 0x78, 0x6f, 0x64, 0x75, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x72, 0x74, 0x71, 0x64, 0x73, 0x62, 0x73, 0x60,
+0x71, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x31, 0x2f, 0x33, 0x34, 0x34, 0x2f, 0x33, 0x34,
+0x34, 0x2f, 0x33, 0x34, 0x34, 0x01, 0x01, 0x01, 0x31, 0x2f, 0x31, 0x2f, 0x31, 0x2f, 0x31, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x31, 0x2f, 0x31, 0x2f, 0x31, 0x2f, 0x31, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x31, 0x2f, 0x31, 0x2f, 0x31, 0x2f, 0x31, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x31, 0x2f, 0x31, 0x2f, 0x31, 0x2f, 0x31, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+]
+payload = data[0x14:]
+
+def dec(d):
+    ret = []
+    for b in d:
+        if b % 2:
+            ret.append(b - 1)
+        else:
+            ret.append(b + 1)
+    ret = ret[4:] + ret[:4]
+    return ret
+
+def hexdump(dump):
+    print(" " * 9, end="")
+    for i in range(0, 0xF+1):
+        print(f"{i:2X}", end=" ")
+
+    print("    ", end="")
+    for i in range(0, 0xF+1):
+        print(f"{i:X}", end="")
+    print()
+
+    for i in range(0, len(dump), 0x10):
+        line = dump[i:i+0x10]
+        print(f"{i:08x}", end=" ")
+        for b in line:
+            print(f"{b:02x}", end=" ")
+
+        print("    ", end="")
+        for b in line:
+            rep = "."
+            if chr(b) in string.printable:
+                rep = chr(b)
+            print(rep, end="")
+
+        print("")
+
+_dec = dec(payload)
+hexdump(_dec)