Sub CopieMiroir()
Dim rg As Range, rgDest As Range
Dim B() As Variant
Set rg = Application.InputBox("Sélectionner les cellules à copier", , , , , , , 8)
Set rgDest = Application.InputBox("Sélectionner la cellule de destination", , , , , , , 8)
ReDim B(1 To rg.Rows.Count, 1 To rg.Columns.Count)
For i = 1 To UBound(B, 1)
For j = 1 To UBound(B, 2)
B(i, j) = rg.Cells(rg.Rows.Count - i + 1, rg.Columns.Count - j + 1).Value
Next j
Next i
rgDest.Resize(UBound(B, 1), UBound(B, 2)) = B
End Sub