Problem with jump to cave, always jump wrong help plz!

[Santasgaming]

I wonder if anyone could help me solve some problems with jumping to a cave, i am trying to make my code work so i can make a valid jump to my code cave, I use virtualallocEx to do so. but the jump code i have does not jump to the correct cave address, it always shoortens the address, like jumping , lets say i jump from &H12000000 and my allocation address is 140123456, then my jump will look like this JMP 123456, you see only the lower part of the address is getting writen as the destination address to my allocated cave.

The game i am working on is a game called Outlast and it is in 64 bit the exe i use, but i am not an expert on this so any help would be appreciated.

Code:

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Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click Try Dim TargetProcess As Process() = Process.GetProcessesByName(TextBox1.Text) TargetProcessHandle = OpenProcess(PROCESS_CREATE_THREAD Or PROCESS_VM_OPERATION Or PROCESS_VM_WRITE, False, TargetProcess(0).Id) Dim CaveAddr As Long = VirtualAllocEx(TargetProcessHandle, 0, &H1024, MEM_COMMIT, PAGE_EXECUTE_READWRITE) TextBox2.Text = Hex(CaveAddr) MakeJmp(&H104C40FF0, "&H" & CaveAddr) Exit For End If Next End If Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub

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