Tal Aloni 363e8a6b98 ACE: Corrected summary 8 gadi atpakaļ
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Authentication cd03f7c946 Corrected SPNEGO implementation 8 gadi atpakaļ
Client 6700166f5a Renamed SMBMessage to SMB1Message 8 gadi atpakaļ
EnumStructures bbd572e938 Added conversion operators to and from AccessMask 8 gadi atpakaļ
Enums bd76e6e5a2 Implemented additional FileInformation structures 8 gadi atpakaļ
Helpers bef9bd6e69 FileTimeHelper.ReadNullableFileTime: throw InvalidDataException if FILETIME is negative 8 gadi atpakaļ
NetBios dd8e867693 NetBIOS name service packets implementation refactoring 8 gadi atpakaļ
Properties 9d8ee88f1e SMBServer v1.1.1 8 gadi atpakaļ
RPC 3f36591e14 RPC PDUs can now be read starting from a specified buffer offset 8 gadi atpakaļ
SMB1 566f7714ba Moved FileAttributes, FileInformationClass and CompressionFormat to Enums\FileInformation 8 gadi atpakaļ
SMB2 724fdf6e9b CreateRequest: Corrected summary 8 gadi atpakaļ
Server 9d4117347e FileSystemShare: Modified constructor 8 gadi atpakaļ
Services 9265858968 Removed leading slash from ServerService.PipeName and WorkstationService.PipeName 8 gadi atpakaļ
Structures 363e8a6b98 ACE: Corrected summary 8 gadi atpakaļ
Tests 017a96240f Renamed NTLMv2ClientChallengeStructure class to NTLMv2ClientChallenge 8 gadi atpakaļ
Utilities 0641ccd6cf PrefetchStream: changed debug message 8 gadi atpakaļ
Win32 c94ea8ad68 Win32 authentication: fail authentication if AcceptSecurityContext return SEC_E_INVALID_TOKEN 8 gadi atpakaļ
Readme.md 3539d3bd31 Updated Readme.md 8 gadi atpakaļ
Readme.txt 4dbc92fb34 Updated Readme.txt 8 gadi atpakaļ
RevisionHistory.txt 9d8ee88f1e SMBServer v1.1.1 8 gadi atpakaļ
SMBLibrary.csproj bd76e6e5a2 Implemented additional FileInformation structures 8 gadi atpakaļ

Readme.md

About SMBLibrary:

SMBLibrary is an open-source C# SMB 1.0/CIFS 1.0, SMB 2.0 and SMB 2.1 server implementation.
SMBLibrary gives .NET developers an easy way to share a directory / file system / virtual file system, with any operating system that supports the SMB protocol.
SMBLibrary shares can be accessed from any Windows version since Windows NT 4.0.

Supported SMB / CIFS transport methods:

• NetBIOS over TCP (port 139)
• Direct TCP hosting (port 445)

'NetBIOS over TCP' and 'Direct TCP hosting' are almost identical, the only differences:
  • A 'session request' packet is initiating the NBT connection.
  • A 'keep alive' packet is sent from time to time over NBT connections.
  • SMB2: Direct TCP hosting supports large MTUs.

Notes:

By default, Windows already use ports 139 and 445. there are several techniques to free / utilize those ports:

Method 1: Disable Windows File and Printer Sharing server completely:
Windows XP/2003:
  1. For every network adapter: Uncheck 'File and Printer Sharing for Microsoft Networks".
  2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT\Parameters and set SMBDeviceEnabled to '0' (this will free port 445).
  3. Reboot.
Windows 7/8/2008/2012:

Disable the "Server" service (p.s. "TCP\IP NETBIOS Helper" should be enabled).

Method 2: Use Windows File Sharing AND SMBLibrary:

Windows bind port 139 to the first IP addres of every adapter, while port 445 is bound globally. This means that if you'll disable port 445 (or block it using a firewall), you'll be able to use a different service on port 139 for every IP address.

Additional Notes:
  • To free port 139 for a given adapter, go to 'Internet Protocol (TCP/IP) Properties' > Advanced > WINS, and select 'Disable NetBIOS over TCP/IP'. Uncheck 'File and Printer Sharing for Microsoft Networks' to ensure Windows will not answer to SMB traffic on port 445 for this adapter.

  • It's important to note that disabling NetBIOS over TCP/IP will also disable NetBIOS name service for that adapter (a.k.a. WINS), This service uses UDP port 137. SMBLibrary offers a name service of its own.

  • You can install a virtual network adapter driver for Windows to be used solely with SMBLibrary:

    • You can install the 'Microsoft Loopback adapter' and use it for server-only communication with SMBLibrary.
    • A limited alternative is 'OpenVPN TAP-Windows Adapter' that can be used for client communication with SMBLibrary.

However, you will have to configure this adapter to use a separate network segment. The driver installation can be downloaded from: https://openvpn.net/index.php/open-source/downloads.html To get started, go to Adapter properties > 'Advanced' and set 'Media Status' to 'Always Connected'.

Windows 7/8/2008/2012:
  • if you want localhost access from Windows explorer to work as expected, you must use port 445, you must also specify the IP address that you selected (\\127.0.0.1 or \\localhost will not work as expected).
Method 3: Use an IP address that is invisible to Windows File Sharing:

Using PCap.Net you can programmatically setup a virtual Network adapter and intercept SMB traffic (similar to how a virtual machine operates), You should use the ARP protocol to notify the network about the new IP address, and then process the incoming SMB traffic using SMBLibrary, good luck!

Using SMBLibrary:

Any directory / filesystem / object you wish to share must implement the IFileSystem interface.
You can share anything from actual directories to custom objects, as long as they expose a directory structure.

Contact:

If you have any question, feel free to contact me.
Tal Aloni tal.aloni.il@gmail.com