Implemented websocket (client <-> server) traffic encryption & compression.

2025-10-01 21:57:26 +02:00
parent 0937840b77
commit fbe85493b2
11 changed files with 160 additions and 206 deletions
--- a/src/client/main.nim
+++ b/src/client/main.nim
@@ -2,7 +2,7 @@ import whisky
 import tables, strutils, strformat, json, parsetoml, base64, os # native_dialogs
 import ./utils/[appImGui, globals]
 import ./views/[dockspace, sessions, listeners, eventlog, console]
-import ../common/[types, utils]
+import ../common/[types, utils, crypto]
 import ./websocket

 import sugar 
@@ -39,9 +39,15 @@ proc main(ip: string = "localhost", port: int = 37573) =

    let io = igGetIO()

+    # Create key pair 
+    let clientKeyPair = generateKeyPair() 
+        
    # Initiate WebSocket connection
-    let ws = newWebSocket(fmt"ws://{ip}:{$port}")
-    defer: ws.close() 
+    var connection = WsConnection(
+        ws: newWebSocket(fmt"ws://{ip}:{$port}"),
+        sessionKey: default(Key)
+    )
+    defer: connection.ws.close() 

    # main loop
    while not app.handle.windowShouldClose:
@@ -59,13 +65,17 @@ proc main(ip: string = "localhost", port: int = 37573) =
            WebSocket communication with the team server
        ]# 
        # Continuously send heartbeat messages
-        ws.sendHeartbeat()
+        connection.ws.sendHeartbeat()

        # Receive and parse websocket response message 
-        let event = recvEvent(ws.receiveMessage().get())
+        let event = recvEvent(connection.ws.receiveMessage().get(), connection.sessionKey)
        case event.eventType:
+        of CLIENT_KEY_EXCHANGE: 
+            connection.sessionKey = deriveSessionKey(clientKeyPair, decode(event.data["publicKey"].getStr()).toKey())            
+            connection.sendPublicKey(clientKeyPair.publicKey)
+
        of CLIENT_PROFILE:
-            profile = parsetoml.parseString(event.data["profile"].getStr())
+           profile = parsetoml.parseString(event.data["profile"].getStr())
        
        of CLIENT_LISTENER_ADD: 
            let listener = event.data.to(UIListener)
@@ -90,7 +100,7 @@ proc main(ip: string = "localhost", port: int = 37573) =
                igSetNextWindowDockID(listenersWindow.DockNode.ID, ImGuiCond_FirstUseEver.int32)
            else:
                igSetNextWindowDockID(dockBottom, ImGuiCond_FirstUseEver.int32)
-            consoles[agent.agentId].draw(ws)
+            consoles[agent.agentId].draw(connection)
            consoles[agent.agentId].showConsole = false

        of CLIENT_AGENT_CHECKIN: 
@@ -127,7 +137,7 @@ proc main(ip: string = "localhost", port: int = 37573) =

        # Draw/update UI components/views
        if showSessionsTable: sessionsTable.draw(addr showSessionsTable)   
-        if showListeners: listenersTable.draw(addr showListeners, ws)
+        if showListeners: listenersTable.draw(addr showListeners, connection)
        if showEventlog: eventlog.draw(addr showEventlog)

        # Show console windows
@@ -136,7 +146,7 @@ proc main(ip: string = "localhost", port: int = 37573) =
            if console.showConsole:
                # Ensure that new console windows are docked to the bottom panel by default
                igSetNextWindowDockID(dockBottom, ImGuiCond_FirstUseEver.int32)
-                console.draw(ws)    
+                console.draw(connection)    
                newConsoleTable[agentId] = console
            
        # Update the consoles table with only those sessions that have not been closed yet
--- a/src/client/views/console.nim
+++ b/src/client/views/console.nim
@@ -170,7 +170,7 @@ proc handleHelp(component: ConsoleComponent, parsed: seq[string]) =
        # Command was not found
        component.addItem(LOG_ERROR, fmt"The command '{parsed[1]}' does not exist.")

-proc handleAgentCommand*(component: ConsoleComponent, ws: WebSocket, input: string) = 
+proc handleAgentCommand*(component: ConsoleComponent, connection: WsConnection, input: string) = 

    # Convert user input into sequence of string arguments
    let parsedArgs = parseInput(input)
@@ -186,7 +186,7 @@ proc handleAgentCommand*(component: ConsoleComponent, ws: WebSocket, input: stri
            command = getCommandByName(parsedArgs[0])
            task = createTask(component.agent.agentId, component.agent.listenerId, command, parsedArgs[1..^1])

-        ws.sendAgentTask(component.agent.agentId, task)
+        connection.sendAgentTask(component.agent.agentId, task)
        component.addItem(LOG_INFO, fmt"Tasked agent to {command.description.toLowerAscii()} ({Uuid.toString(task.taskId)})")

    except CatchableError: 
@@ -219,7 +219,7 @@ proc print(item: ConsoleItem) =
    igSameLine(0.0f, 0.0f)
    igTextUnformatted(item.text.cstring, nil)

-proc draw*(component: ConsoleComponent, ws: WebSocket) =
+proc draw*(component: ConsoleComponent, connection: WsConnection) =
    igBegin(fmt"[{component.agent.agentId}] {component.agent.username}@{component.agent.hostname}".cstring, addr component.showConsole, 0)
    defer: igEnd()
    
@@ -340,7 +340,7 @@ proc draw*(component: ConsoleComponent, ws: WebSocket) =
            component.addItem(LOG_COMMAND, command)

            # Send command to team server
-            component.handleAgentCommand(ws, command)
+            component.handleAgentCommand(connection, command)

            # Add command to console history
            component.history.add(command)
--- a/src/client/views/listeners.nim
+++ b/src/client/views/listeners.nim
@@ -22,7 +22,7 @@ proc ListenersTable*(title: string): ListenersTableComponent =
    result.startListenerModal = ListenerModal()
    result.generatePayloadModal = AgentModal()

-proc draw*(component: ListenersTableComponent, showComponent: ptr bool, ws: WebSocket) = 
+proc draw*(component: ListenersTableComponent, showComponent: ptr bool, connection: WsConnection) = 
    igBegin(component.title, showComponent, 0)
    defer: igEnd() 

@@ -41,11 +41,11 @@ proc draw*(component: ListenersTableComponent, showComponent: ptr bool, ws: WebS

    let listener = component.startListenerModal.draw()
    if listener != nil: 
-        ws.sendStartListener(listener)
+        connection.sendStartListener(listener)

    let buildInformation = component.generatePayloadModal.draw(component.listeners)
    if buildInformation != nil:
-        ws.sendAgentBuild(buildInformation)
+        connection.sendAgentBuild(buildInformation)

    #[
        Listener table
@@ -106,7 +106,7 @@ proc draw*(component: ListenersTableComponent, showComponent: ptr bool, ws: WebS
                    if not ImGuiSelectionBasicStorage_Contains(component.selection, cast[ImGuiID](i)):
                        newListeners.add(listener)
                    else: 
-                        ws.sendStopListener(listener.listenerId)
+                        connection.sendStopListener(listener.listenerId)

                component.listeners = newListeners
                ImGuiSelectionBasicStorage_Clear(component.selection)
--- a/src/client/websocket.nim
+++ b/src/client/websocket.nim
@@ -1,20 +1,30 @@
 import whisky 
-import times, tables, json
+import times, tables, json, base64
 import ../common/[types, utils, serialize, event]
 export sendHeartbeat, recvEvent

 #[
    Client -> Server 
 ]#
-proc sendStartListener*(ws: WebSocket, listener: UIListener) = 
+proc sendPublicKey*(connection: WsConnection, publicKey: Key) = 
+    let event = Event(
+        eventType: CLIENT_KEY_EXCHANGE,
+        timestamp: now().toTime().toUnix(),
+        data: %*{
+            "publicKey": encode(Bytes.toString(publicKey))
+        }
+    )
+    connection.ws.sendEvent(event, connection.sessionKey)
+
+proc sendStartListener*(connection: WsConnection, listener: UIListener) = 
    let event = Event(
        eventType: CLIENT_LISTENER_START, 
        timestamp: now().toTime().toUnix(),
        data: %listener
    )
-    ws.sendEvent(event)
+    connection.ws.sendEvent(event, connection.sessionKey)

-proc sendStopListener*(ws: WebSocket, listenerId: string) = 
+proc sendStopListener*(connection: WsConnection, listenerId: string) = 
    let event = Event(
        eventType: CLIENT_LISTENER_STOP,
        timestamp: now().toTime().toUnix(),
@@ -22,9 +32,9 @@ proc sendStopListener*(ws: WebSocket, listenerId: string) =
            "listenerId": listenerId
        }
    )
-    ws.sendEvent(event)
+    connection.ws.sendEvent(event, connection.sessionKey)

-proc sendAgentBuild*(ws: WebSocket, buildInformation: AgentBuildInformation) = 
+proc sendAgentBuild*(connection: WsConnection, buildInformation: AgentBuildInformation) = 
    let event = Event(
        eventType: CLIENT_AGENT_BUILD,
        timestamp: now().toTime().toUnix(), 
@@ -36,9 +46,9 @@ proc sendAgentBuild*(ws: WebSocket, buildInformation: AgentBuildInformation) =
            "modules": buildInformation.modules
        }
    )
-    ws.sendEvent(event)
+    connection.ws.sendEvent(event, connection.sessionKey)

-proc sendAgentTask*(ws: WebSocket, agentId: string, task: Task) = 
+proc sendAgentTask*(connection: WsConnection, agentId: string, task: Task) = 
    let event = Event(
        eventType: CLIENT_AGENT_TASK,
        timestamp: now().toTime().toUnix(),
@@ -47,4 +57,4 @@ proc sendAgentTask*(ws: WebSocket, agentId: string, task: Task) =
            "task": task    
        }
    )
-    ws.sendEvent(event)
+    connection.ws.sendEvent(event, connection.sessionKey)
--- a/src/common/event.nim
+++ b/src/common/event.nim
@@ -3,26 +3,66 @@ when defined(server):
 when defined(client): 
    import whisky

-import times, json
-import ./[types, utils, serialize]
+import times, json, zippy
+import ./[types, utils, serialize, crypto]

-proc sendEvent*(ws: WebSocket, event: Event) = 
+proc sendEvent*(ws: WebSocket, event: Event, key: Key = default(Key)) = 
    var packer = Packer.init() 

+    let iv = generateBytes(Iv)
+
+    var 
+        data = string.toBytes($event.data)
+
    packer.add(cast[uint8](event.eventType))
    packer.add(cast[uint32](event.timestamp))
-    packer.addDataWithLengthPrefix(string.toBytes($event.data))
-    let data = packer.pack() 
    
-    ws.send(Bytes.toString(data), BinaryMessage)
+    if event.eventType != CLIENT_KEY_EXCHANGE and event.eventType != CLIENT_HEARTBEAT: 
+        # Compress data
+        let compressed = compress(data, BestCompression, dfGzip)
+        
+        # Encrypt data
+        let (encData, gmac) = encrypt(key, iv, compressed)
+        
+        packer.addData(iv)      # 12 bytes IV
+        packer.addData(gmac)    # 16 bytes Authentication Tag
+        packer.addDataWithLengthPrefix(encData)
+    else: 
+        packer.addDataWithLengthPrefix(data)
+    
+    let body = packer.pack()
+
+    ws.send(Bytes.toString(body), BinaryMessage)
+
+proc recvEvent*(message: Message, key: Key = default(Key)): Event = 

-proc recvEvent*(message: Message): Event = 
    var unpacker = Unpacker.init(message.data)
+    let 
+        eventType = cast[EventType](unpacker.getUint8()) 
+        timestamp = cast[int64](unpacker.getUint32())
+    var data: string
+
+    if eventType != CLIENT_KEY_EXCHANGE and eventType != CLIENT_HEARTBEAT: 
+    
+        let 
+            iv = unpacker.getByteArray(Iv)
+            gmac = unpacker.getByteArray(AuthenticationTag)
+            encData = string.toBytes(unpacker.getDataWithLengthPrefix())
+    
+        # Decrypt data
+        let (decData, tag) = decrypt(key, iv, encData)
+        if tag != gmac: 
+            raise newException(CatchableError, "Invalid authentication tag.")
+
+        # Decompress data
+        data = Bytes.toString(uncompress(decData, dfGzip))
+    else: 
+        data = unpacker.getDataWithLengthPrefix()

    return Event(
-        eventType: cast[EventType](unpacker.getUint8()),
-        timestamp: cast[int64](unpacker.getUint32()),
-        data: parseJson(unpacker.getDataWithLengthPrefix())
+        eventType: eventType,
+        timestamp: timestamp,
+        data: parseJson(data)
    )

 proc sendHeartbeat*(ws: WebSocket) = 
--- a/src/common/serialize.nim
+++ b/src/common/serialize.nim
@@ -93,7 +93,6 @@ proc getUint64*(unpacker: Unpacker): uint64 =
    unpacker.position += 8

 proc getBytes*(unpacker: Unpacker, length: int): seq[byte] = 
-    
    if length <= 0:
        return @[]

--- a/src/common/types.nim
+++ b/src/common/types.nim
@@ -1,8 +1,10 @@
 import tables
 import times
 import parsetoml, json
-import mummy
 import system
+import mummy
+when defined(client): 
+    import whisky

 # Custom Binary Task structure
 const   
@@ -242,10 +244,11 @@ type
 type 
    EventType* = enum
        CLIENT_HEARTBEAT = 0'u8             # Basic checkin 
+        CLIENT_KEY_EXCHANGE = 200'u8

        # Sent by client 
        CLIENT_AGENT_BUILD = 1'u8           # Generate an agent binary for a specific listener
-        CLIENT_AGENT_TASK = 2'u8         # Instruct TS to send queue a command for a specific agent
+        CLIENT_AGENT_TASK = 2'u8            # Instruct TS to send queue a command for a specific agent
        CLIENT_LISTENER_START = 3'u8        # Start a listener on the TS
        CLIENT_LISTENER_STOP = 4'u8         # Stop a listener

@@ -255,8 +258,8 @@ type
        CLIENT_AGENT_ADD = 102'u8           # Add agent to sessions table
        CLIENT_AGENT_CHECKIN = 103'u8       # Update agent checkin
        CLIENT_AGENT_PAYLOAD = 104'u8       # Return agent payload binary 
-        CLIENT_CONSOLE_ITEM = 105'u8         # Add entry to a agent's console 
-        CLIENT_EVENTLOG_ITEM = 106'u8           # Add entry to the eventlog        
+        CLIENT_CONSOLE_ITEM = 105'u8        # Add entry to a agent's console 
+        CLIENT_EVENTLOG_ITEM = 106'u8       # Add entry to the eventlog        

    Event* = object 
        eventType*: EventType               
@@ -271,8 +274,12 @@ type

    Profile* = TomlValueRef

-    UIClient* = ref object
-        ws*: WebSocket
+    WsConnection* = ref object
+        when defined(server):
+            ws*: mummy.WebSocket
+        when defined(client):
+            ws*: whisky.WebSocket
+        sessionKey*: Key

    Conquest* = ref object
        dbPath*: string
@@ -281,7 +288,7 @@ type
        agents*: Table[string, Agent]
        keyPair*: KeyPair
        profile*: Profile
-        client*: UIClient
+        client*: WsConnection

    AgentCtx* = ref object
        agentId*: string
--- a/src/server/core/listener.nim
+++ b/src/server/core/listener.nim
@@ -5,7 +5,7 @@ import parsetoml
 import ../api/routes
 import ../db/database
 import ../core/logger
-import ../../common/[types, utils, profile]
+import ../../common/[types, profile]
 import ../websocket

 proc serve(listener: Listener) {.thread.} = 
--- a/src/server/core/server.nim
+++ b/src/server/core/server.nim
@@ -1,132 +0,0 @@
-import prompt, terminal, argparse, parsetoml, times, json, math
-import strutils, strformat, system, tables
-
-import ./[agent, listener, builder]
-import ../globals
-import ../db/database
-import ../core/logger
-import ../../common/[types, crypto, utils, profile, event]
-import ../websocket
-import mummy, mummy/routers
-
-proc header() = 
-    echo ""
-    echo "┏┏┓┏┓┏┓┓┏┏┓┏╋"
-    echo "┗┗┛┛┗┗┫┗┻┗ ┛┗ V0.1"
-    echo "      ┗  @jakobfriedl"  
-    echo "─".repeat(21) 
-    echo ""
-
-proc init*(T: type Conquest, profile: Profile): Conquest = 
-    var cq = new Conquest
-    cq.listeners = initTable[string, Listener]()
-    cq.threads = initTable[string, Thread[Listener]]()
-    cq.agents = initTable[string, Agent]() 
-    cq.interactAgent = nil 
-    cq.profile = profile
-    cq.keyPair = loadKeyPair(CONQUEST_ROOT & "/" & profile.getString("private-key-file"))
-    cq.dbPath = CONQUEST_ROOT & "/" & profile.getString("database-file")
-    cq.client = nil
-    return cq
-
-#[
-    WebSocket
-]#
-proc upgradeHandler(request: Request) = 
-    {.cast(gcsafe).}:
-        let ws = request.upgradeToWebSocket()
-        cq.client = UIClient(
-            ws: ws
-        )
-
-proc websocketHandler(ws: WebSocket, event: WebSocketEvent, message: Message) {.gcsafe.} = 
-    {.cast(gcsafe).}:
-        case event:
-        of OpenEvent:
-            # New client connected to team server
-            # Send profile, sessions and listeners to the UI client
-            cq.client.sendProfile(cq.profile)
-            for id, listener in cq.listeners: 
-                cq.client.sendListener(listener)
-            for id, agent in cq.agents: 
-                cq.client.sendAgent(agent)
-            cq.client.sendEventlogItem(LOG_SUCCESS_SHORT, "CQ-V1")
-    
-        of MessageEvent:
-            # Continuously send heartbeat messages
-            ws.sendHeartbeat() 
-
-            let event = message.recvEvent()
-
-            case event.eventType: 
-            of CLIENT_AGENT_TASK:
-                let agentId = event.data["agentId"].getStr()
-                let task = event.data["task"].to(Task) 
-                cq.agents[agentId].tasks.add(task)
-
-            of CLIENT_LISTENER_START:
-                let listener = event.data.to(UIListener)
-                cq.listenerStart(listener.listenerId, listener.address, listener.port, listener.protocol)
-            
-            of CLIENT_LISTENER_STOP:
-                let listenerId = event.data["listenerId"].getStr()
-                cq.listenerStop(listenerId)
-
-            of CLIENT_AGENT_BUILD:
-                let 
-                    listenerId = event.data["listenerId"].getStr()
-                    sleepDelay = event.data["sleepDelay"].getInt()
-                    sleepTechnique = cast[SleepObfuscationTechnique](event.data["sleepTechnique"].getInt())
-                    spoofStack = event.data["spoofStack"].getBool()
-                    modules = cast[uint32](event.data["modules"].getInt())
-                
-                let payload = cq.agentBuild(listenerId, sleepDelay, sleepTechnique, spoofStack, modules)
-                if payload.len() != 0: 
-                    cq.client.sendAgentPayload(payload)
-
-            else: discard
-
-        of ErrorEvent:
-            discard 
-        of CloseEvent:
-            # Set the client instance to nil again to prevent debug error messages
-            cq.client = nil
-    
-proc startServer*(profilePath: string) =
-
-    # Ensure that the conquest root directory was passed as a compile-time define 
-    when not defined(CONQUEST_ROOT): 
-        quit(0)
-
-    header()
-    
-    try:
-        # Initialize framework context
-        # Load and parse profile 
-        let profile = parsetoml.parseFile(profilePath)
-        cq = Conquest.init(profile)
-
-        cq.info("Using profile \"", profile.getString("name"), "\" (", profilePath ,").")
-        
-    except CatchableError as err:
-        echo err.msg
-        quit(0)
-    
-    # Initialize database
-    cq.dbInit()
-    for agent in cq.dbGetAllAgents():
-        cq.agents[agent.agentId] = agent
-    for listener in cq.dbGetAllListeners():
-        cq.listeners[listener.listenerId] = listener
-
-    # Restart existing listeners
-    for listenerId, listener in cq.listeners: 
-        cq.listenerStart(listenerId, listener.address, listener.port, listener.protocol)
-
-    # Start websocket server
-    var router: Router
-    router.get("/*", upgradeHandler)
-    
-    # Increased websocket message length in order to support dotnet assembly execution
-    let server = newServer(router, websocketHandler, maxMessageLen = 1024 * 1024 * 1024)
-    server.serve(Port(cq.profile.getInt("team-server.port")), "0.0.0.0")
--- a/src/server/main.nim
+++ b/src/server/main.nim
@@ -1,11 +1,11 @@
-import terminal, parsetoml, json, math
+import terminal, parsetoml, json, math, base64
 import strutils, strformat, system, tables

 import ./core/[listener, builder]
 import ./globals
 import ./db/database
 import ./core/logger
-import ../common/[types, crypto, profile, event]
+import ../common/[types, crypto, utils, profile, event]
 import ./websocket
 import mummy, mummy/routers

@@ -34,7 +34,7 @@ proc init*(T: type Conquest, profile: Profile): Conquest =
 proc upgradeHandler(request: Request) = 
    {.cast(gcsafe).}:
        let ws = request.upgradeToWebSocket()
-        cq.client = UIClient(
+        cq.client = WsConnection(
            ws: ws
        )

@@ -43,21 +43,31 @@ proc websocketHandler(ws: WebSocket, event: WebSocketEvent, message: Message) {.
        case event:
        of OpenEvent:
            # New client connected to team server
-            # Send profile, sessions and listeners to the UI client
-            cq.client.sendProfile(cq.profile)
-            for id, listener in cq.listeners: 
-                cq.client.sendListener(listener)
-            for id, agent in cq.agents: 
-                cq.client.sendAgent(agent)
-            cq.client.sendEventlogItem(LOG_SUCCESS_SHORT, "CQ-V1")
+            # Send the public key for the key exchange, all other information with be transmitted when the key exchange is completed
+            cq.client.sendPublicKey(cq.keyPair.publicKey)
    
        of MessageEvent:
            # Continuously send heartbeat messages
            ws.sendHeartbeat() 

-            let event = message.recvEvent()
+            let event = message.recvEvent(cq.client.sessionKey)

            case event.eventType: 
+            of CLIENT_KEY_EXCHANGE: 
+                let publicKey = decode(event.data["publicKey"].getStr()).toKey()
+                cq.client.sessionKey = deriveSessionKey(cq.keyPair, publicKey)
+            
+                # Send relevant information to the client
+                # - C2 profile 
+                # - agent sessions
+                # - listeners
+                cq.client.sendProfile(cq.profile)
+                for id, listener in cq.listeners: 
+                    cq.client.sendListener(listener)
+                for id, agent in cq.agents: 
+                    cq.client.sendAgent(agent)
+                cq.client.sendEventlogItem(LOG_SUCCESS_SHORT, "CQ-V1")
+
            of CLIENT_AGENT_TASK:
                let agentId = event.data["agentId"].getStr()
                let task = event.data["task"].to(Task) 
--- a/src/server/websocket.nim
+++ b/src/server/websocket.nim
@@ -1,6 +1,5 @@
 import times, json, base64, parsetoml
-import ../common/[types, event]
-
+import ../common/[types, utils, event]
 export sendHeartbeat, recvEvent

 proc `%`*(agent: Agent): JsonNode =
@@ -29,7 +28,18 @@ proc `%`*(listener: Listener): JsonNode =
 #[
    Server -> Client
 ]#
-proc sendProfile*(client: UIClient, profile: Profile) = 
+proc sendPublicKey*(client: WsConnection, publicKey: Key) = 
+    let event = Event(
+        eventType: CLIENT_KEY_EXCHANGE,
+        timestamp: now().toTime().toUnix(),
+        data: %*{
+            "publicKey": encode(Bytes.toString(publicKey))
+        }
+    )
+    if client != nil: 
+        client.ws.sendEvent(event, client.sessionKey)
+
+proc sendProfile*(client: WsConnection, profile: Profile) = 
    let event = Event(
        eventType: CLIENT_PROFILE,
        timestamp: now().toTime().toUnix(),
@@ -38,9 +48,9 @@ proc sendProfile*(client: UIClient, profile: Profile) =
        }
    )
    if client != nil: 
-        client.ws.sendEvent(event)
+        client.ws.sendEvent(event, client.sessionKey)

-proc sendEventlogItem*(client: UIClient, logType: LogType, message: string) = 
+proc sendEventlogItem*(client: WsConnection, logType: LogType, message: string) = 
    let event = Event(
        eventType: CLIENT_EVENTLOG_ITEM,
        timestamp: now().toTime().toUnix(),
@@ -50,27 +60,27 @@ proc sendEventlogItem*(client: UIClient, logType: LogType, message: string) =
        }
    )
    if client != nil: 
-        client.ws.sendEvent(event)
+        client.ws.sendEvent(event, client.sessionKey)

-proc sendAgent*(client: UIClient, agent: Agent) = 
+proc sendAgent*(client: WsConnection, agent: Agent) = 
    let event = Event(
        eventType: CLIENT_AGENT_ADD, 
        timestamp: now().toTime().toUnix(),
        data: %agent
    )
    if client != nil: 
-        client.ws.sendEvent(event)
+        client.ws.sendEvent(event, client.sessionKey)

-proc sendListener*(client: UIClient, listener: Listener) =
+proc sendListener*(client: WsConnection, listener: Listener) =
    let event = Event(
        eventType: CLIENT_LISTENER_ADD,
        timestamp: now().toTime().toUnix(),
        data: %listener
    )
    if client != nil: 
-        client.ws.sendEvent(event)
+        client.ws.sendEvent(event, client.sessionKey)

-proc sendAgentCheckin*(client: UIClient, agentId: string) = 
+proc sendAgentCheckin*(client: WsConnection, agentId: string) = 
    let event = Event(
        eventType: CLIENT_AGENT_CHECKIN,
        timestamp: now().toTime().toUnix(),
@@ -79,9 +89,9 @@ proc sendAgentCheckin*(client: UIClient, agentId: string) =
        }
    )
    if client != nil: 
-        client.ws.sendEvent(event)
+        client.ws.sendEvent(event, client.sessionKey)

-proc sendAgentPayload*(client: UIClient, bytes: seq[byte]) =
+proc sendAgentPayload*(client: WsConnection, bytes: seq[byte]) =
    let event = Event(
        eventType: CLIENT_AGENT_PAYLOAD, 
        timestamp: now().toTime().toUnix(),
@@ -90,9 +100,9 @@ proc sendAgentPayload*(client: UIClient, bytes: seq[byte]) =
        }
    )
    if client != nil: 
-        client.ws.sendEvent(event)
+        client.ws.sendEvent(event, client.sessionKey)

-proc sendConsoleItem*(client: UIClient, agentId: string, logType: LogType, message: string) = 
+proc sendConsoleItem*(client: WsConnection, agentId: string, logType: LogType, message: string) = 
    let event = Event(
        eventType: CLIENT_CONSOLE_ITEM,
        timestamp: now().toTime().toUnix(),
@@ -103,4 +113,4 @@ proc sendConsoleItem*(client: UIClient, agentId: string, logType: LogType, messa
        }
    )
    if client != nil: 
-        client.ws.sendEvent(event)
+        client.ws.sendEvent(event, client.sessionKey)