\documentclass[a4paper,10pt,oneside]{book}
\usepackage{amsmath}
\usepackage{titlesec}
\usepackage{indentfirst}
\usepackage[hidelinks=true]{hyperref} 
\usepackage[localise]{xepersian}
\setcounter{secnumdepth}{4}
\begin{document}
\section{1}
aaa
\subsection{2}
bbb
\subsubsection{3}
ccc

\end{document}