The Pashtun written language is from the Arabic alphabet.

[Manzareh]

Pashto employs the Pashto alphabet, a modified form of the Persian alphabet which on its part is derived from the Arabic alphabet. It has extra letters for Pashto-specific sounds. Since the 17th century Pashto has been primarily written in the Naskh script, rather than the Nasta'liq script used for neighboring Persian and Urdu languages. The Pashto alphabet consists of 45 letters, and 4 diacritic marks. The following table gives the letters' isolated forms, along with IPA values for the letters' typical sounds:
ا
/ɑ, ʔ/ب
/b/پ
/p/ت
/t̪/ټ
/ʈ/ث
/s/ج
/d͡ʒ/ځ
/d͡z/چ
/t͡ʃ/څ
/t͡s/ح
/h/خ
/x/د
/d̪/ډ
/ɖ/ﺫ
/z/ﺭ
/r/ړ
/ɺ̢, ɻ/ﺯ
/z/ژ
/ʒ/ږ
/ʐ, ʝ, ɡ/س
/s/ش
/ʃ/ښ
/ʂ, ç, x/ص
/s/ض
/z/ط
/t̪/ظ
/z/ع
/ʔ/غ
/ɣ/ف
/f/ق
/q/ك / ک
/k/ګ
/ɡ/ل
/l/م
/m/ن
/n/ڼ
/ɳ/و
/w, u, o/ه
/h, a, ə/ۀ
/ə/ي
/j, i/ې
/e/ى
/ai, j/ۍ
/əi/ئ
/əi/
Pashto is written from right to left.

[Lemar]

can you give us any info on what script or alphabets we used before Arabic?
Pre islamic era?
thanks