Difficulty : 1
Language : .NET
Platform : Windows
OS Version : Windows 7
Packer / Protector : Babel Obfuscator 8.3

Description :

UnPackMe and crackme very easy.

Screenshot :

UnPackMe.7z

 

private void method_1(object sender, EventArgs e)
{
   if (this.TextBox1.Text.Length != 0)
   {
       if (Operators.CompareString(this.TextBox1.Text, "4D4F44494659-" + this.method_0().ToString() + "-4D4F44494659", false) == 0)
       {
           this.Text = "License Version";
           Interaction.MsgBox("License Version", MsgBoxStyle.Information, "Demo");
       }
       else
       {
           Interaction.MsgBox("You Enter Wrong Key", MsgBoxStyle.Critical, "Demo");
       }
   }
   else
   {
       Interaction.MsgBox("Enter License Key", MsgBoxStyle.Information, null);
   }
}
 

// Form1
private string method_0()
{
   string result = string.Empty;
   SelectQuery query = new SelectQuery("Win32_BaseBoard");
   ManagementObjectSearcher managementObjectSearcher = new ManagementObjectSearcher(query);
   try
   {
       ManagementObjectCollection.ManagementObjectEnumerator enumerator = managementObjectSearcher.Get().GetEnumerator();
       while (enumerator.MoveNext())
       {
           ManagementObject managementObject = (ManagementObject)enumerator.Current;
           result = managementObject["SerialNumber"].ToString();
       }
   }
   finally
   {
       ManagementObjectCollection.ManagementObjectEnumerator enumerator;
       if (enumerator != null)
       {
           ((IDisposable)enumerator).Dispose();
       }
   }
   return result;
}

Quote

4D4F44494659-PF03MVC7-4D4F44494659

https://github.com/XenocodeRCE/BabelDeobfuscator

edit : if you got a Sandbox error, use de4dot first, if somebody can clear me up about this error I may fix my tool.

Edited February 2, 201610 yr by XenocodeRCE
Clarity. Mainly.

 

working serial for me "4D4F44494659-To be filled by O.E.M.-4D4F44494659" without quotes

simply drop in de4dot to rename then decrpyt the strings however you like (de4dot for example using strtyp delegate method)

and heres the correct key 
https://gyazo.com/161bad82c78755c6508fe82d6cb0252c

Edited February 2, 201610 yr by Teddy Rogers