Cyrtodactylus malayanus — Borneo Bent-toed Gecko
Some other names for this species:
Borneo Bow-fingered Gecko
Cyrtodactylus malayanus is a large Cyrtodactylus species, with a distinctive pattern of crossbones and distinct dark spots. It is known from Mulu, so I'm reasonably confident in this ID.
I'm not confident at all about the ID of this one. The clean crossbars look like Cyrtodactylus malayanus, but it lacks the distinctive dark spots (perhaps because it is a youngster?). On the other hand, the typically blotchy pattern on C. pubisulcus sometimes coalesces into crossbars, and the white bands on this one seem too wide for a typical C. malayanus. On the other other hand, the well-marked facial stripes seem more like C. malayanus than C. pubisulcus.
I haven't seen a broad enough sample of any of these species to be confident in identifying somewhat unusual specimens, but I lean towards thinking this is a young C. malayanus.