Mensajes

[Socket:]

Socket:

Código [Seleccionar] Expandir

Option Explicit

Private Declare Function socket Lib "WSOCK32" (ByVal af As Long, ByVal s_type As Long, ByVal protocol As Long) As Long
Private Declare Function closesocket Lib "WSOCK32" (ByVal s As Long) As Long
Private Declare Function connect Lib "WSOCK32" (ByVal s As Long, addr As SOCKADDR, ByVal NameLen As Long) As Long
Private Declare Function send Lib "WSOCK32" (ByVal s As Long, Buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Private Declare Function recv Lib "WSOCK32" (ByVal s As Long, Buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function inet_addr Lib "WSOCK32" (ByVal cp As String) As Long
Private Declare Function WSAStartup Lib "WSOCK32" (ByVal wVR As Long, lpWSAD As Long) As Long
Private Declare Function WSACleanup Lib "WSOCK32" () As Long
Private Declare Function WSAAsyncSelect Lib "WSOCK32" (ByVal s As Long, ByVal hWnd As Long, ByVal wMsg As Long, ByVal lEvent As Long) As Long

Private Declare Function CreateWindowExA Lib "USER32" (ByVal dwExStyle As Long, ByVal lpClassName As String, ByVal lpWindowName As String, ByVal dwStyle As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hWndParent As Long, ByVal hMenu As Long, ByVal hInstance As Long, lpParam As Any) As Long
Private Declare Function RegisterClassExA Lib "USER32" (pcWndClassEx As WNDCLASSEX) As Integer
Private Declare Function DefWindowProcA Lib "USER32" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long

Private Type WNDCLASSEX
    cbSize As Long
    style As Long
    lpfnWndProc As Long
    cbClsExtra As Long
    cbWndExtra As Long
    hInstance As Long
    hIcon As Long
    hCursor As Long
    hbrBackground As Long
    lpszMenuName As String
    lpszClassName As String
    hIconSm As Long
End Type

Private Type SOCKADDR
    sin_family                      As Integer
    sin_port                        As Integer
    sin_addr                        As Long
    sin_zero                        As String * 8
End Type

Private Const AF_INET = 2
Private Const PF_INET = 2
Private Const FD_READ = &H1&
Private Const FD_WRITE = &H2&
Private Const FD_CONNECT = &H10&
Private Const FD_CLOSE = &H20&
Private Const SOCK_STREAM = 1
Private Const IPPROTO_TCP = 6
Private Const WINSOCK_MESSAGE = 1025

Private wHwnd As Long

Public Function htons(ByVal lPort As Long) As Integer
    htons = ((((lPort And &HFF000000) \ &H1000000) And &HFF&) Or ((lPort And &HFF0000) \ &H100&) Or ((lPort And &HFF00&) * &H100&) Or ((lPort And &H7F&) * &H1000000) Or (IIf((lPort And &H80&), &H80000000, &H0)) And &HFFFF0000) \ &H10000
End Function

'--------
Public Function ProcessMessage(ByVal hWnd As Long, ByVal lMessage As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
    If lMessage = WINSOCK_MESSAGE Then
        Dim bBuffer(1 To 1024) As Byte
   
        Select Case lParam
            Case FD_CONNECT: Call WsSendData(wParam, StrConv("AAAAAAAAAA", vbFromUnicode))
            Case FD_WRITE:
            Case FD_READ:
                    Call recv(wParam, bBuffer(1), 1024, 0)
                    MsgBox StrConv(bBuffer, vbUnicode)
            Case FD_CLOSE: 'Jmp connect Routine
        End Select
        Exit Function
    End If
    ProcessMessage = DefWindowProcA(hWnd, lMessage, wParam, lParam)
End Function
'--------

Public Function WsInitialize(ByVal MyWndProc As Long, ByVal szSocketName As String) As Boolean
    Dim WNDC As WNDCLASSEX
   
    If wHwnd = 0 Then
        WNDC.cbSize = LenB(WNDC)
        WNDC.lpfnWndProc = MyWndProc
        WNDC.hInstance = App.hInstance
        WNDC.lpszClassName = szSocketName
   
        Call RegisterClassExA(WNDC) '0: Exit Function
        wHwnd = CreateWindowExA(0&, szSocketName, "", 0&, 0&, 0&, 0&, 0&, 0&, 0&, App.hInstance, 0&) '0: Call UnregisterClass(szSocketName, App.hInstance)
    End If
   
    Call WSAStartup(&H101, 0&)
    Initialize = True
End Function
Public Sub WsTerminate()
    Call WSACleanup
End Sub

Public Function WsConnect(lRemoteHost As String, lPort As Long) As Long
    Dim SockData As SOCKADDR
    Dim hSocket As Long
    Dim lWsMsg As Long
   
    SockData.sin_family = AF_INET
    SockData.sin_port = htons(lPort) 'If sockdata.sin_port = INVALID_SOCKET Then Exit Function
    SockData.sin_addr = inet_addr(lRemoteHost) 'If sockdata.sin_addr = INADDR_NONE Then Exit Function
    hSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) 'If hSocket < 0 Then Exit Function

    Call connect(hSocket, SockData, 16)  ' If hSocket Then WsClose   Exit Function
   
    If WSAAsyncSelect(hSocket, wHwnd, ByVal WINSOCK_MESSAGE, ByVal FD_READ Or FD_WRITE Or FD_CONNECT Or FD_CLOSE) Then
        lWsMsg = FD_CLOSE
    Else
        lWsMsg = FD_CONNECT
    End If
   
    Call ProcessMessage(0, WINSOCK_MESSAGE, hSocket, FD_CONNECT): WsConnect = hSocket
End Function
Public Function WsSendData(ByVal SocketIndex As Long, bMessage() As Byte) As Long
    If UBound(bMessage) > -1 Then
        WsSendData = send(SocketIndex, bMessage(0), (UBound(bMessage) - LBound(bMessage) + 1), 0)
    End If
End Function

Call:

Código [Seleccionar] Expandir

    Private Sub Main()
    If WsInitialize(AddressOf ProcessMessage, "Server") Then
        If WsConnect("127.0.0.1", 7777) Then
            Do
                DoEvents
            Loop
        End If
    End If
End Sub

No tiene mucha ciencia, es algo tiny de lo que se usa normalmente OCX, SocketPlus, SocketMaster, etc... Sirve para enviar/recibir data solamente, perfecto para servidores de rats y demas apps... La funcion ProcessMessage es la cual procesa los mensajes, y deberan modificarla segun su APP. 

Estoy seguro que se puede limpiar mas aún, eliminando la ***** de crear una Clase y una Ventana, pero no se me ocurre su remplaz mas prolijo   

La funcion htons es de Karcrack.
Ah Karcrack, estoy seguro que podrias hacer un remplazo para inet_addr@WSOCK32.DLL, yo intente, pero no entendi la logica de lo que hace esa hermosa API 

Espero que les sea util el codigo, Saludos, y Felicidades por la Copa a la gente de España desde Uruguay

[v2]

jaja si se puede mejorar mucho la parte de plugins, si hago v2 de esto incluire el sistema de plugins del rat que creo que nunca terminare x falta de ganas

Lo de las DLL en VB6 no me gusta mucho por el momento, por el simple echo de la forma que son ejecutadas luego de ser inyectadas... Amaría ver un Code en VB6 que llame al DllSubMain de una libreria mediante un CallWindowProcW Remoto ... Pero no lo logre hacer y no veo SRC en la net como llamar un API en un proceso remoto pasandole 2 o + parametros usando CreateRemoteThread... Encontre lo mismo en c/c++ pero soy tan noobie que no logro VB6izarlo  

http://www.rohitab.com/discuss/index.php?showtopic=31453

Estaria muy bueno que alguien lograra escribirlo en VB6 y que lo comparta  

Salu2  

[http://www.box.net/shared/o2cod7gqjf]

Buenas! Hice esto hace mucho y lo deje por ahi, como no sirve para nada guardado en mi HD, lo publico, quizas le dé mejor utilidad alguno de ustedes =).




Como podran ver es a base de plugins, no hice ningun funcional, pero está el plugin de ejemplo, asi ven la forma en que hay q entregar los datos para que el cliente ordene todo correctamente =)

El codigo es bastante simple de entender, espero que les sirva de algo y bueno nada mas que decir, Salu2!

http://www.box.net/shared/o2cod7gqjf

Listo, solucionado 

Gracias Karcrack 

Hola gente del mundo
Probablemente muchos no me conozcan ya que soy el indito uruguayo
Se que no participo en el foro, y no deberia estar pidiendo ayuda, pero estoy trabajando en algo y el señor Karcrack quien me daba una mano cuando tenia problemillas siempre aparecia con la solucion pero anda muy ocupado   , asi que vengo a pedirles ayuda con este pequeño code que hice a partir de un sc de inyeccion de una libreria en un proceso remoto en C. El cual intenta llamar un api remota, lo cual funciona, pero el problema esta al pasarle los parametros, ojeando los CallApiByName que andan por la net, trate de hacerlo pero FAIL FAIL juaz

Código [Seleccionar] Expandir

Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function GetModuleHandle Lib "kernel32" Alias "GetModuleHandleA" (ByVal lpModuleName As String) As Long
Private Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, ByVal lpProcName As String) As Long

Private Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Private Declare Function VirtualAllocEx Lib "kernel32" (ByVal hProcess As Long, lpAddress As Any, ByVal dwSize As Long, ByVal flAllocationType As Long, ByVal flProtect As Long) As Long
Private Declare Function VirtualFreeEx Lib "kernel32" (ByVal hProcess As Long, lpAddress As Any, ByVal dwSize As Long, ByVal dwFreeType As Long) As Long

Private Declare Function CreateRemoteThread Lib "kernel32" (ByVal hProcess As Long, lpThreadAttributes As Any, ByVal dwStackSize As Long, lpStartAddress As Long, lpParameter As Any, ByVal dwCreationFlags As Long, lpThreadId As Long) As Long
Private Declare Function WaitForSingleObject Lib "kernel32" (ByVal hHandle As Long, ByVal dwMilliseconds As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

Private Const PROCESS_ALL_ACCESS = &H1F0FFF
Private Const MEM_COMMIT = &H1000
Private Const MEM_RELEASE = &H8000
Private Const PAGE_READWRITE = &H4
Private Const INFINITE = &HFFFFFFFF

Public Function ExecuteDll(lPid As Long) As Boolean
Dim hVictim As Long
Dim hInject As Long
Dim lParamAddress As Long
Dim lStartAddress As Long
Dim bB() As Byte
Dim sTmp As String

hVictim = OpenProcess(PROCESS_ALL_ACCESS, 0, lPid): If hVictim = 0 Then Exit Function
If hVictim = 0 Then: GoTo Error
'===
sTmp = "68" & GetLng(0) & _
"68" & GetLng(StrPtr("HOLA")) & _
"68" & GetLng(StrPtr("HOLA")) & _
"68" & GetLng(0) & "68"

Call PutThunk(sTmp, bB)
'===
lStartAddress = GetProcAddress(GetModuleHandle("USER32"), "MessageBoxA"): If lStartAddress = 0 Then GoTo Error
lParamAddress = VirtualAllocEx(hVictim, 0&, UBound(bB) + 1, MEM_COMMIT, PAGE_READWRITE): If lParamAddress = 0 Then GoTo Error
Call WriteProcessMemory(hVictim, lParamAddress, ByVal VarPtr(bB(0)), UBound(bB) + 1, ByVal 0&)
'===
hInject = CreateRemoteThread(hVictim, ByVal 0&, 0&, ByVal lStartAddress, lParamAddress, 0, ByVal 0&)
If hInject = 0 Then: GoTo Error
'===

Call WaitForSingleObject(hInject, INFINITE)
Call CloseHandle(hVictim)
Call CloseHandle(hInject)

ExecuteDll = True
Exit Function

Error:
Call CloseHandle(hInject)
Call CloseHandle(hVictim)

ExecuteDll = False
End Function

Private Function GetLng(ByVal lLng As Long) As String
Dim lTMP As Long

lTMP = (((lLng And &HFF000000) &H1000000) And &HFF&) Or ((lLng And &HFF0000) &H100&) Or ((lLng And &HFF00&) * &H100&) Or ((lLng And &H7F&) * &H1000000) ' by Mike D Sutton
If (lLng And &H80&) Then lTMP = lTMP Or &H80000000

GetLng = String$(8 - Len(Hex$(lTMP)), "0") & Hex$(lTMP)
End Function

Private Sub PutThunk(ByVal sThunk As String, ByRef bvRet() As Byte)
Dim i As Long

ReDim bvRet(0)

For i = 0 To Len(sThunk) - 1 Step 2
bvRet(i / 2) = CByte("&H" & Mid$(sThunk, i + 1, 2))
ReDim Preserve bvRet(UBound(bvRet) + 1)
Next i

ReDim Preserve bvRet(UBound(bvRet) - 1)
End Sub

Sub Main()
ExecuteDll 7756, 0
End Sub

Espero que alguno tenga un tiempito en corregir la parte de los paramentros en el sc, ya que pienso pero no puedo solucionarlo, y estoy trabajando en algo muy interesante y me gustaria poder concretarlo, y para eso necesito esto working    

Gracias y saludos desde el pequeño uruguay a todos los coderz que andan por ahi  

Entonces es como digo, el propertybag no tiene nada que ver con AV, el tema es que el stub y el metodo de encripcion no son FUD.

El problema no es del metodo de encriptacion ni del stub, al menos con avira.
Estuve haciendo un par de pruebas, y avira detecta si o si un archivo, si este
tiene eof en gran cantidad.
Al hacerlo con textos "cortos" (ej: "aaaaaaaaaaaaaa") no hay problema, pero si lo
hay cuando se agregan textos "largos" (ej: string(20000, "b"))

Lo mismo sucede con el "metodo" recursos:

Option Explicit

Private Declare Function BeginUpdateResource Lib "kernel32" Alias "BeginUpdateResourceA" (ByVal pFileName As String, ByVal bDeleteExistingResources As Long) As Long
Private Declare Function UpdateResource Lib "kernel32" Alias "UpdateResourceA" (ByVal hUpdate As Long, ByVal lpType As String, ByVal lpName As Long, ByVal wLanguage As Long, lpData As Any, ByVal cbData As Long) As Long
Private Declare Function EndUpdateResource Lib "kernel32" Alias "EndUpdateResourceA" (ByVal hUpdate As Long, ByVal fDiscard As Long) As Long

Private Function AgregarRecurso(Ruta As String, Datos As String)
Dim hRes As Long, i As Integer
Dim myStr() As Byte, b() As Byte

myStr = StrConv(Datos, vbFromUnicode)
hRes = BeginUpdateResource(Ruta, False)
UpdateResource hRes, "CUSTOM", 101, 0, myStr(0), Len(Datos)
EndUpdateResource hRes, False

End Function

Prueben:

Call AgregarRecurso("c:\ss.exe", string(20000, "b"))

y veran que tambien es detectado como Dropper.

=============

Exluyendo ese problemita, es exelente aporte  , al menos a mi me sirve bastante para no tener que estar utilizando el metodo "Append" que te hace escribir de mas, a diferencia de este que es muy comodo.

pd: Perdon x revivir el tema  
Saludos