Rating:
# shamecontrol
## Description
[EN]
What if it is a Windows .exe, do you still can?
Flag format: "3DS{flag}"
[PT-BR]
E se for binario Windows, voce ainda consegue?
Flag no formato: "3DS{flag}"
## Solution
Another .NET application, but this time there was no output when we tried to run the application in console mode. So, let's read the code:
```csharp
namespace ConsoleApplication2
{
// Token: 0x02000002 RID: 2
internal class Program
{
// Token: 0x06000001 RID: 1 RVA: 0x00002050 File Offset: 0x00000250
private static void Main(string[] args)
{
string text = "40";
RegistryKey currentUser = Registry.CurrentUser;
if (Debugger.IsAttached)
{
Console.WriteLine("3DS{2}j{0}t{0}v{0}c{0}b{0}nd{1}{3}", new object[]
{
text[1],
text[0],
"{",
"}"
});
}
RegistryKey registryKey = currentUser.OpenSubKey("parangaricutirimirruaro");
if (registryKey != null)
{
Console.WriteLine("3DS{2}j{0}t{0}v{0}c{0}b{0}nd{1}{3}", new object[]
{
text[0],
text[1],
"{",
"}"
});
registryKey.Close();
}
currentUser.Close();
}
}
}
```
A simple substitution on the given string was enough to get the solution. But there was some debugger verification on the code:
```csharp
if (Debugger.IsAttached)
```
This generates a fake flag: 3DS{j0t0v0c0b0nd4}
The vector starts from zero, so the correct approach:
```
text[0] = 4
text[1] = 0
```
Flag: 3DS{j4t4v4c4b4nd0}
