vertices_list=[ 
    [0.0,0.0,0.0],
        [0.0,1.0,0.0],
    [1.0,1.0,0.0],
    [1.0,0.0,0.0],
    [0.0,0.0,1.0],
    [0.0,1.0,1.0],
    [1.0,1.0,1.0],
    [1.0,0.0,1.0]
]

faces_list=[[0,1,2,3],
    [7,6,5,4],
    [3,7,4,0],
    [5,6,2,1],
    [4,5,1,0],
    [2,6,7,3]]

A_CUBE_MESH=NMesh.GetRaw()

for coordinate in vertices_list:
    A_VERTEX=NMesh.Vert(coordinate[0], coordinate[1], coordinate[2])
    A_CUBE_MESH.verts.append(A_VERTEX)

for thisface in faces_list:
    A_FACE=NMesh.Face()
    for vertexpos in thisface:
        A_FACE.append(A_CUBE_MESH.verts[vertexpos])
    A_CUBE_MESH.faces.append(A_FACE)

NMesh.PutRaw(A_CUBE_MESH,'Cube')
Blender.Redraw()