Despite their prevalence in European folklore, the concept of a werewolf is relatively unknown in the Mythic Middle East.
A Ghul, a member of one of the more evil jinn tribes, often assumes the shape of predators and scavengers such as jackals and hyenas in the tales, but the wolf is a form never mentioned in Arabian folklore as the shape of a shapeshifted jinn.
The Arabic equivalent of a werewolf, the qutrub, is believed to be a form of ghul that can assume the form of a “wolf-like” animal, but specifically stated as never assuming the appearance of a wolf per se. The form is therefore most likely a hyena.
Apparently this is because jinn greatly fear wolves. If I’d known, I would have made more of any potential confrontation between a Tremere with a wolf companion and a sahir with a coterie of jinn servants as a Story Seed… perhaps a lost opportunity.
I stumbled upon this fact only after I completed my final drafts for The Cradle and the Crescent in an excellent source of jinn related material and story ideas: Legends of the Fire Spirits, by Robert Lebling. I really wish I’d found this book earlier, but in my defence it was only published in early 2011. It’s a gold mine of ideas and if it had been available back when I was writing the first drafts I would have used it extensively.
There is however a ghostly spirit, the ‘udhrut, native to Yemen that takes the form of a wolf. Greatly feared by jinn, the spirit is the murdered ghost of an evildoer. In context an evil wizard such as a sahir in ArM5 terms is a potential option and makes an interesting opponent for the jinn minions of the native wizards of the Mythic Middle East…
To Wolves of the Middle East
To ‘Udhrut (the Jinni’s Bane)
My Life as a Grog 
Legends is a great book indeed. Great research done by Mr. Lebling. The South Asian stories were very typical. I too have read extensively on them and you see how so much folklore in Europe has been inspired by Djinn activities in the Middle East i.e. Ghul drinking blood or feeding of dead bodies. Would love to know what else you researched for your book, I feel the Testament of Solomon is also a great read for unique demon information.
Should you require it would love to throw ideas at you to see if you can find it useful for your novels.
Best Regards