Both are architectonicidae, the first one is looks like Heliacus (Teretropoma) infundibuliformis s.s. (GMELIN, 1791) (Architectonicidae of the Indo-Pacific (Mollusca, Gastropoda) page no 260) and the second juvenile specimen of Architectonica cf perspectiva (Linnaeus, 1758) Complex species.
Hi Samuel - The first is an Heliacus infundibuliformis (Gmelin, 1791), common species in all Indo-West Pacific. The second is not an Architectonicidae; foe me it could be a Solariellidae, but I have a very poor knowledge of this family
The first one seems to be Heliacus (Teretropoma) infundibuliformis which is also not recorded from Pakistan but I have collected many specimens. Also have a look on Pseudotorinia delectabilis (Melvill 1893)