just use cat instead of dd

dump.sh

@@ -23,6 +23,7 @@ for line in $(cat /proc/$pid/maps); do
    fi
 done
 
+rm "$target_soname" 2>/dev/null ||:
 for line in ${lines[@]}; do
-   dd if="/proc/$pid/map_files/$(echo "$line" | awk '{print $1}')" seek="$((16#$(echo "$line" | awk '{print $3}')))" of=$target_soname
+   cat /proc/$pid/map_files/$(echo "$line" | awk '{print $1}') >> $target_soname
 done