[Python] NDT files decryptor

neuronet · 10/12/2011, 22:50

You don't need to reverse it back to NDT Format.. just rename the txt to ndt and it will work

Diuuude · 10/13/2011, 02:18

You are talking about server-sided ndt files, aren't you ?

ArgosManiac · 10/13/2011, 16:20

can u pls tell me what's this "NDT files decryptor" actually do? ty^^

kevy21 · 10/13/2011, 16:56

Decrypts .NDT Files

seinnt · 12/02/2011, 19:07

how about change rewards per quest?
was that possible?

kevy21 · 12/02/2011, 22:11

Quote:

Originally Posted by seinnt

how about change rewards per quest?
was that possible?

no because,

1/ they are checked against server side files

2/ you would need it recompiling

neuronet · 12/03/2011, 00:58

Quote:

Originally Posted by seinnt

how about change rewards per quest?
was that possible?

if you change your files it wil only "show" you different.. The Reward finally given is server-side

inter55545 · 12/03/2011, 04:05

@ bootdisk
big THX
Is work Perfectly Thanks for Share Many info are now too read

I hope the next step anyone will be share the server files ^^

dalicia · 03/14/2012, 14:51

Quote:

Originally Posted by neuronet

I have now a problem...

For IntAO and EuroAO the converter works.. but not for KAO...

Any idea how to solve this problem? I have attached an .ndt file from Korean AO...

Thanks a lot in advance...

Did someone find a solution to this problem?
Even some image files are crypted now for KAO...

neuronet · 06/24/2012, 14:04

Hmm... I ported the NDT file decrypt tool to AutoIT for better usage for my own stuff... but still only working with "old 1.1" format.. the new format that's meanwhile used from USAO and KORAO i still have not found the "solution" to decrypt...

Code:

#cs ----------------------------------------------------------------------------

 AutoIt Version: 3.3.8.1
 Author:         NeuroNet (based on BootDisk)

 Script Function:
	NDT/NTX-Decryptor

#ce ----------------------------------------------------------------------------


$file_in = FileOpenDialog("Select ndt/ntx-file", @ScriptDir, "All (*.*)")
$file_ou = StringTrimRight($file_in, 4) & ".txt"

$in_file = FileOpen($file_in, 0)
$ou_file = FileOpen($file_ou, BitOR(16, 2))

If $in_file = -1 Then
    MsgBox(0, "Error", "Unable to open file.")
    Exit
EndIf

FileSetPos($in_file, 12, 0)

$seed = Asc(FileRead($in_file, 1))

$size = FileGetSize($file_in)

For $i = 26 To ($size-1)
	FileSetPos($in_file, $i, 0)
	$v = Asc(FileRead($in_file, 1))
	$v = $v - $seed
	$v = BitAND ($v, 0xFF)
	$v2 = Asc(FileRead($in_file, 1))
	$v = BitXOR ($v, $v2)
	FileWrite($ou_file, Chr($v))
Next

FileClose($in_file)
FileClose($ou_file)

For the "new" file format i wrote first a "reverse" script to see what's happening:

Code:

#cs ----------------------------------------------------------------------------

 AutoIt Version: 3.3.8.1
 Author:         NeuroNet (based on BootDisk)

 Script Function:
	Decrypt-Seed-Tester

#ce ----------------------------------------------------------------------------

; clear result:"V     e     r     s     i     o     n     I     n     f     o    "
$test_result = "56 00 65 00 72 00 73 00 69 00 6F 00 6E 00 49 00 6E 00 66 00 6F 00"

; first "crypted" bytes of old 1.1 files....
$test_input  = "5C 5C 0A DD 8B 4B F9 D4 82 59 07 DA 88 58 06 FD AB 37 E5 F5 A3 3E EC 93"

; first "crypted" bytes of new 1.3 files....
;~ $test_input  = "1B 00 0D F9 5D 00 B0 00 20 00 25 CC BF 57 74 00 21 00 DC CB DB 57 5A CD"

$test_input_split = StringSplit($test_input, " ")
$test_result_split = StringSplit($test_result, " ")

$test_seed = ""

For $i = 1 To $test_result_split[0]
	for $x = 0x0 to 0xFF
		$v = Dec($test_input_split[$i])
		$v = $v - $x
		$v = BitAND ($v, 0xFF)
		$v2 = Dec($test_input_split[$i+1])
		$v = BitXOR ($v, $v2)
		if Dec($test_result_split[$i]) = $v Then
			$test_seed = $test_seed & Hex($x, 2) & " "
			ExitLoop
		EndIf
	Next
Next

$Res_text = $test_input & @CRLF & $test_result & @CRLF & $test_seed
MsgBox(4096, "Test", $Res_text)

if i run it with the "old" pattern (1.1 : "5C 5C 0A DD 8B 4B F9 D4 82 59 07 DA 88 58 06 FD AB 37 E5 F5 A3 3E EC 93") it shows in msgbox in last line the same "seed" for all bytes:

if i run it with the "new" pattern (1.3: "1B 00 0D F9 5D 00 B0 00 20 00 25 CC BF 57 74 00 21 00 DC CB DB 57 5A CD") it shows different seeds so i think they maybe use new crypt algorithm...

any1 any useful/helpful idea?

inter55545 · 06/24/2012, 15:22

neuronet send me plz the serverip.ndt form Kor version
so i will look whats happend

neuronet · 06/24/2012, 22:31

Quote:

Originally Posted by inter55545

neuronet send me plz the serverip.ndt form Kor version
so i will look whats happend

it's versioninfo not serverip but same format....

inter55545 · 06/27/2012, 17:29

komm da jetzt auch net weiter

neuronet · 06/29/2012, 03:15

Finally...

Here is a version of decryptor that can also decrypt the new ndt files...

it is command line tool...

Code:

USAGE: NDT_CONVERT sample.ndt

decryption result will be saved then as

sample.ndt.txt

have fun...

it will recognice whether it's 1.1 or 1.3 crypted...

Download moved with update to next post...

neuronet · 06/29/2012, 11:18

Changed....

Will recognize version autmatically...

so u can use it for both.. old and new ".ndt" ".ntx" files