Breadcrumbs

[shawty220]

I have the code to read binary etc.
I want to find a replace a text string in a binary, any code?

[mandai]

What sort of string? This should work for ASCII. Also assuming your input is a byte array.

Code: Select all

        Dim input As Byte() = Encoding.ASCII.GetBytes("00FindThis12")

        Dim lookFor As Byte() = Encoding.ASCII.GetBytes("FindThis")

        Dim temp(lookFor.Length - 1) As Byte

        For i As Integer = 0 To input.Length - lookFor.Length
            System.Buffer.BlockCopy(input, i, temp, 0, lookFor.Length)
            'MsgBox(Encoding.ASCII.GetString(temp))'show progress

            If temp.SequenceEqual(lookFor) Then
                MsgBox("Found lookfor at offset " & i & " of input.")
                input(i) = Asc("2"c) ' replace 'F' with '2'
                MsgBox(Encoding.ASCII.GetString(input))'output for visible purpose only. do not use this string for your data
                Exit For
            End If
        Next

[shawty220]

That should work great thank you