Combined 3DSX SMDH extractor

getsmdh.sh

#!/bin/sh
# Fully sh compatible :^)
# -=- V0idst4r -=-
# Simple script to extract SMDH from a combined 3DSX
# Doesn't do anything fancy, uses strings to find the SMDH
# For some reason bytes 0x20-0x24 where the SMDH offset should be yeilded me a scrambled offset
[ ! -f "$1" ] && {
	echo "Usage: $0 <3dsx>"
	exit 1
}
of=$(basename "$1").smdh
offset=$(strings -t d "$1" | grep SMDH | awk 'END{print $1}')
[ ! "$offset" ] && {
	echo "[!] SMDH not found"
	exit 1
}
dd if="$1" of="$of" ibs=1 skip=$offset count=14016 status=none
echo "[*] Wrote SMDH: $of"