Keygen me #2 2016 by skypeaful

[skypeaful]

Difficulty : 2.0
Language : .NET
Platform : Windows
OS Version : All
Packer / Protector : Appfuscator + CodeFort

Description :

1) A valid key

2) A working keygen

Good luck

Screenshot :

kgm2.rar

[crystalboy]

- Dump the process using MegaDumper
- Clean the assembly using de4dot

The serial must be lenght 0x14 digit.

The method that checks the serial is smethod_0(string string_0) in GForm0.

I don't have time now to work on a keygen now but i will do this evening if there aren't solutions yet.

After all the calculations maded on the serials digit the result must be equal to 0x800 to be a valid serial.

I am sharing this information not to spoiler but for people wants to try it.

 

Edited May 23, 2016 by crystalboy

[cawk]

ill take a patch for now may update later with a valid serial or a keygen if i find time

first use megadumper to get the original assembly then drag and drop on de4dot this wont decrypt strings use then appfuscator constant cleaner

i havent decrypted strings yet but will work on it later you can use codecrackers string tool to decrypt strings however the application wont run but can give you an idea of what it does

kgm2-patch.exe

[skypeaful]

Hi cawk, thank for try but this is keygenme. The goal is make valid key for algorithm  Can you defeat it?

[crystalboy]

Due to the short free time i was unable to cover all cases. By the way generated serials are working well.

Keygen attached.

 

 

skypeaful KeygenMe 2 - Keygen crystalboy.exe

Edited May 25, 2016 by crystalboy

[GIV]

On 23.05.2016 at 7:52 PM, cawk said:

i havent decrypted strings yet but will work on it later you can use codecrackers string tool to decrypt strings however the application wont run but can give you an idea of what it does

 

Private Sub button_0_Click(ByVal sender As Object, ByVal e As EventArgs)
    If Not GForm0.smethod_0(Me.textBox_0.Text) Then
        MessageBox.Show("Invalid key. Not luck for you :(")
    Else
        MessageBox.Show("You win. Try to make keygen")
    End If
End Sub

 

 

1. Run

2. Dump with MD

3. Clean with de4dot

4. Run trough AppFuscatorUnpacker.exe ad AppFuscatorCalli3.exe

5. AppFuscatorStringsDecryptor.exe

Edited June 28, 2016 by GIV
Add few words.

[X-Lady]

kgm2_unpacked.rar