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[VB.NET HELP] How to write to memory adress? (NEED-HELP)

 
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OSIRIS
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PostPosted: Sun Sep 07, 2008 1:34 pm    Post subject: [VB.NET HELP] How to write to memory adress? (NEED-HELP) Reply with quote
If I already know the address and the value.

Last edited by OSIRIS on Sun Sep 07, 2008 2:53 pm; edited 1 time in total
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Stylo
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PostPosted: Sun Sep 07, 2008 1:41 pm    Post subject: Reply with quote
use API's
OpenProcess
ReadProcessMemory
WriteProcessMemory
CloseHandle

there's a ProcessMemoryReaderLib on the internet but it's written in C# so it's useless for u unless u know how to convert it to VB.NET
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hcavolsdsadgadsg
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PostPosted: Sun Sep 07, 2008 1:55 pm    Post subject: Reply with quote
I'm sure you can manage making 2 buttons and a text box.

Code:
[code]Imports System.Runtime.InteropServices
Public Class Form1
    <DllImport("kernel32.dll")> _
        Public Shared Function WriteProcessMemory( _
        ByVal hProcess As IntPtr, _
        ByVal lpBaseAddress As IntPtr, _
        ByVal lpBuffer As Byte(), _
        ByVal nSize As UInt32, _
        ByRef lpNumberOfBytesWritten As UInt32 _
    ) As Boolean
    End Function

    <DllImport("kernel32.dll")> _
       Public Shared Function ReadProcessMemory( _
        ByVal hProcess As IntPtr, _
        ByVal lpBaseAddress As IntPtr, _
        ByVal lpBuffer As Byte(), _
        ByVal iSize As UInt32, _
        ByRef lpNumberOfBytesRead As UInt32 _
    ) As Boolean
    End Function

    Dim p As Process() = Process.GetProcessesByName("winmine")
    Dim buffer As Byte() = New Byte(3) {}

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        WriteProcessMemory(p(0).Handle, &H100579C, New Byte() {&HFF}, 4, 0)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        ReadProcessMemory(p(0).Handle, &H100579C, buffer, 4, 0)
        TextBox1.Text = Convert.ToString(BitConverter.ToUInt32(buffer, 0))
    End Sub
End Class[/code]
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OSIRIS
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PostPosted: Sun Sep 07, 2008 2:07 pm    Post subject: Reply with quote
slovach wrote:
I'm sure you can manage making 2 buttons and a text box.

Code:
[code]Imports System.Runtime.InteropServices
Public Class Form1
    <DllImport("kernel32.dll")> _
        Public Shared Function WriteProcessMemory( _
        ByVal hProcess As IntPtr, _
        ByVal lpBaseAddress As IntPtr, _
        ByVal lpBuffer As Byte(), _
        ByVal nSize As UInt32, _
        ByRef lpNumberOfBytesWritten As UInt32 _
    ) As Boolean
    End Function

    <DllImport("kernel32.dll")> _
       Public Shared Function ReadProcessMemory( _
        ByVal hProcess As IntPtr, _
        ByVal lpBaseAddress As IntPtr, _
        ByVal lpBuffer As Byte(), _
        ByVal iSize As UInt32, _
        ByRef lpNumberOfBytesRead As UInt32 _
    ) As Boolean
    End Function

    Dim p As Process() = Process.GetProcessesByName("winmine")
    Dim buffer As Byte() = New Byte(3) {}

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        WriteProcessMemory(p(0).Handle, &H100579C, New Byte() {&HFF}, 4, 0)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        ReadProcessMemory(p(0).Handle, &H100579C, buffer, 4, 0)
        TextBox1.Text = Convert.ToString(BitConverter.ToUInt32(buffer, 0))
    End Sub
End Class[/code]





It is too hard I don't know what to do. Tell me moar pl0x.
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arigity
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PostPosted: Sun Sep 07, 2008 3:02 pm    Post subject: Reply with quote
how to use writeprocessmemory
http://msdn.microsoft.com/en-us/library/ms681674.aspx

the pinvoke
http://www.pinvoke.net/default.aspx/kernel32/WriteProcessMemory.html
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OSIRIS
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PostPosted: Sun Sep 07, 2008 3:16 pm    Post subject: Reply with quote
arigity wrote:
how to use writeprocessmemory
http://msdn.microsoft.com/en-us/library/ms681674.aspx

the pinvoke
http://www.pinvoke.net/default.aspx/kernel32/WriteProcessMemory.html



Didn't teach anything.
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arigity
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PostPosted: Sun Sep 07, 2008 5:46 pm    Post subject: Reply with quote
>_> it's simple, ill explain slovach's code with a few modifications and most of it cut out.


step 1. get the process you want to hack

Code:
 dim MyProcess as process() = Process.GetProcessesByName("winmine") 

(slovach used winmine as the process to hack)

step 2. use writeProcessMemory to do lolhax

Code:
dim lolhax as valuetype = value '(replace valuetype with what the type of data ie single for float values integer for integer values, and value for what you want it to set it to ie 7.1 or 3)

dim addressToHax as integer = &H*Address here* '&H means its in hex (thats good >_> )

WriteProcessMemory(MyProcess(0).Handle, addressToHax, lolhax, 4, 0)



BOOL WINAPI WriteProcessMemory(
__in HANDLE hProcess, = MyProcess(0).Handle
__in LPVOID lpBaseAddress, = addressToHax
__in LPCVOID lpBuffer, = lolhax
__in SIZE_T nSize, = 4
__out SIZE_T *lpNumberOfBytesWritten = 0
);
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hcavolsdsadgadsg
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PostPosted: Sun Sep 07, 2008 7:06 pm    Post subject: Reply with quote
[Stefon] wrote:
arigity wrote:
how to use writeprocessmemory
http://msdn.microsoft.com/en-us/library/ms681674.aspx

the pinvoke
http://www.pinvoke.net/default.aspx/kernel32/WriteProcessMemory.html



Didn't teach anything.


I'm using Minesweeper as the example. 100579C is the address to the timer.

1. The first 2 imports are the pinvoke signatures for the API calls. Look them up on pinvoke.net; it is a good resource for this.

2. Look up the System.Diagnostics.Process class on MSDN. I used
Code:
Process.GetProcessesByName
method to get everything I needed, like the handle to the process.

Code:
Dim p As Process() = Process.GetProcessesByName("winmine")


If you looked it up, you'd surely find that the method returns a process array.

3.
Code:
Dim buffer As Byte() = New Byte(3) {}
is just creating a new byte array that is 4 bytes large. Look at ReadProcessMemory and it's purpose should become pretty obvious.

Code:
WriteProcessMemory(p(0).Handle, &H100579C, New Byte() {&HFF}, 4, 0)


Remember the process array? p(0) is the first element to the array. The process class does most of the work here and will provide the handle and everything we need.

Next is the address, obvious enough.

Next, I'm declaring a new byte array, which holds one byte of 255. Obviously you don't have to do it this way.

Next is how many bytes to write. I should have wrote 1 actually.
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dnsi0
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PostPosted: Mon Sep 08, 2008 4:56 pm    Post subject: Reply with quote
Wow VB.net is sooooo different from vb6.0

I can give u an example in vb6.0 if u want.
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