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// Author: Ryan Cobb (@cobbr_io)

// Project: SharpShell (https://github.com/cobbr/SharpShell)

// License: BSD 3-Clause

using System;

using System.Linq;

using System.Reflection;

using System.Collections.Generic;

namespace SharpShell.API.SharpShell

{

class SharpShell

{

public static string WrapperFunctionFormat =

@"using System;

using System.IO;

using System.Linq;

using System.Text;

using System.Security;

using System.Security.Principal;

using System.Collections.Generic;

{0}

using SharpSploit.Credentials;

using SharpSploit.Enumeration;

using SharpSploit.Execution;

using SharpSploit.Generic;

using SharpSploit.Misc;

public static class {1}

{{

public static object Execute()

{{

{2}

}}

static void Main(string[] args)

{

bool printPrompt = true;

List<string> UsingImports = new List<string>();

List<string> lines = new List<string>();

APICompiler compiler = new APICompiler(args.Length > 0 ? args[0] : "http://localhost:5000/api/SharpShell/compile");

while (true)

{

// Display Prompt

if (printPrompt)

{

Console.Write("SharpShell > ");

}

else

{

Console.Write(">>> ");

}

// Read Input

string line = Console.ReadLine();

// SharpShell Special Commands

if (line.Trim().ToLower() == "exit" || line.Trim().ToLower() == "quit")

{

return;

}

else if (line.Trim() == "")

{

continue;

}

else if (line.Trim().EndsWith("\\"))

{

printPrompt = false;

lines.Add(line.TrimEnd('\\'));

continue;

}

else if (line.Trim().StartsWith("using ") && line.Trim().Split(' ').Length == 2 && line.Trim().EndsWith(";"))

{

Console.WriteLine("Import:\"" + line.Trim() + "\" now being used.");

UsingImports.Add(line.Trim());

continue;

}

try

{

// Concatenation

printPrompt = true;

string source = String.Join(Environment.NewLine, lines.ToArray());

lines.Clear();

source = source + Environment.NewLine + line;

if (!source.Contains("return "))

{

source = "return " + source;

}

// Compilation

string ClassName = RandomString();

byte[] assemblyBytes = compiler.Compile(new APICompiler.CompilationRequest

{

Source = String.Format(WrapperFunctionFormat, String.Join(Environment.NewLine, UsingImports.ToArray()), ClassName, source),

AssemblyName = "SharpShell",

Optimize = true,

TargetDotNetVersion = APICompiler.DotNetVersion.Net35,

OutputKind = APICompiler.OutputKind.DynamicallyLinkedLibrary,

Platform = APICompiler.Platform.AnyCpu

});

// Execution

Assembly assembly = Assembly.Load(assemblyBytes);

object result = assembly.GetType(ClassName).GetMethod("Execute").Invoke(null, null);

Console.WriteLine(result.ToString());

}

catch (CompilationException e)

{

Console.Error.WriteLine(e.Message);

}

catch (Exception e)

{

Console.Error.WriteLine("RuntimeException: " + e.Message + e.StackTrace);

}

private static Random random = new Random();

private static string RandomString()

{

const string alphachars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

return alphachars[random.Next(alphachars.Length)] + new string(Enumerable.Repeat(chars, random.Next(10, 30)).Select(s => s[random.Next(s.Length)]).ToArray());

}