C# Class for Skill Decrypting

[sladlejrhfpq]

A simple C# class, to encrypt or decrypt skilldata files.

All credits goes to superkhung[at]vnsecurity.net

My part was just to rewrite it in C#, using his released C++ source.

How to use in code?

Decrypt d = new Decrypt();
d.ReadAndDecryptFile(@"E:\skilldata_15000enc.txt");
d.SaveFile(@"E:\skilldata_15000enc.txt");

If you want to save it to a different place, just change SaveFile method's param.

[MentaL]

[denise456]

Good Very Good

[tormentor]

very thanks

[MaDenGo]

Good job bro :)

[lemoniscool]

really nice i bet torstmn can use it in his C# PK2Extractor :D

[megaman963]

Nice release :)

Just the inverse way is not available yet ... but truly, great release

[sladlejrhfpq]

Nice release :)

Just the inverse way is not available yet ... but truly, great release

encrypting and decrypting should also work

[megaman963]

encrypting and decrypting should also work

my mistake, didn't read the code until the end ... I just saw this part:

if (buffer[0] == 0xE2 && buffer[1] == 0xB0) Encrypted = true;
                    byte buff;
                    for (int i = 0; i < fileLen; i++)
                    {
                        buff = (byte)(Hash_Table_1[key % 0xA7] - Hash_Table_2[key % 0x1EF]);
                        ++key;
                        if (Encrypted) buffer[i] += buff;
                        else buffer[i] -= buff;
                    }

It will going to re-encrypt the file again if it check that first two bytes are not encrypted ...

next time, i will check before posting xD

[sladlejrhfpq]

my mistake, didn't read the code until the end ... I just saw this part:

if (buffer[0] == 0xE2 && buffer[1] == 0xB0) Encrypted = true;
                    byte buff;
                    for (int i = 0; i < fileLen; i++)
                    {
                        buff = (byte)(Hash_Table_1[key % 0xA7] - Hash_Table_2[key % 0x1EF]);
                        ++key;
                        if (Encrypted) buffer[i] += buff;
                        else buffer[i] -= buff;
                    }

It will going to re-encrypt the file again if it check that first two bytes are not encrypted ...

next time, i will check before posting xD

yeah, it is the exact copy of the released C++ source, just rewritten in C# :)

[lemoniscool]

again: really nice, now we have almost everything in a .NET language only thing missing: a converter for the new file format of the 3d models to convert them into vsro compatible versions (like someone did manually with celestial knight armor)

[Mixizi]

Like always , Mark's work is awesome ;) good bro :) (When the bilard haha ? )

[sladlejrhfpq]

Like always , Mark's work is awesome ;) good bro :) (When the bilard haha ? )

thank you, its done too :)