upload decryptor

decrypt.py

@@ -0,0 +1,62 @@
+import os
+import binascii
+import sys
+from Crypto.Cipher import AES
+
+game_key = b""
+
+def ReadGameKey(filename):
+    global game_key
+    riffd = open(filename, "rb")
+    riffd.seek(0x120)
+    game_key = riffd.read(0x10)
+    riffd.close()
+def DecryptFile(filename):
+    fd = open(filename, "rb")
+    header = fd.read(4)
+    if header != b"PSSE" and header != b"PSME":
+        print(filename + " Not a PSSE File")
+        exit()
+    fd.seek(0x50, 0)
+    enc1 = fd.read(0x20)
+    fd.seek(0x70, 0)
+    enc2 = fd.read(0x10)
+    fd.seek(0x680, 0)
+    file_data = fd.read()
+    fd.close()
+
+    iv = b"\x00\x01\x02\x03\04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F"
+    key = b"\x4E\x29\x8B\x40\xF5\x31\xF4\x69\xD2\x1F\x75\xB1\x33\xC3\x07\xBE"
+    cipher = AES.new(key, AES.MODE_CBC, iv)
+    dec1 = cipher.decrypt(enc1)
+    cipher = AES.new(key, AES.MODE_CBC, iv)
+    iv2 = cipher.decrypt(enc2)
+
+    cipher = AES.new(game_key, AES.MODE_CBC, iv2)
+    game_data_dec = cipher.decrypt(file_data)
+    return game_data_dec
+    
+    
+file = sys.argv[1]
+
+ReadGameKey(file+"\\RO\\License\\FAKE.RIF")
+print("Reading Game key from FAKE.RIF: "+binascii.hexlify(game_key).decode("UTF-8"))
+FileData = DecryptFile(file+"\\RO\\Application\\psse.list")
+FilesList = FileData.replace(b"\r", b"").split(b"\n")
+
+for File in FilesList:
+    if File == b"":
+        continue
+    File = File.replace(b"/", b"\\")
+    path = file.encode("UTF-8")
+    FilePath = path+b"\\RO\\Application\\"+File
+    print((b"Decrypting: "+FilePath).decode("UTF-8"))
+    if os.path.exists(FilePath):
+        FileData = DecryptFile(FilePath)
+        open(FilePath, "wb").write(FileData)
+    else:
+        print("Error: File not Found")
+    
+
+open(file+"\\RO\\Application\\psse.list", "wb").write(FileData)
+print("Done")