Decoder

declare -a KEYMODES=('asis' 'scrypt' 'mcrypt-md5' 'mcrypt-sha1' 'pkdes' 's2k-simple-md5' 's2k-simple-sha1' 's2k-simple-ripemd' 's2k-salted-md5' 's2k-salted-sha1' 's2k-salted-ripemd' 's2k-isalted-md5' 's2k-isalted-sha1' 's2k-isalted-ripemd')

declare -A ALGORITHMS
ALGORITHMS['cast-128']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['gost']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['rijndael-128']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['twofish']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['arcfour']='stream'
ALGORITHMS['cast-256']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['loki97']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['rijndael-192']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['saferplus']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['wake']='stream'
ALGORITHMS['blowfish-compat']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['des']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['rijndael-256']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['serpent']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['xtea']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['blowfish']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['enigma']='stream'
ALGORITHMS['rc2']='cbc cfb ctr ecb ncfb nofb ofb'
ALGORITHMS['tripledes']='cbc cfb ctr ecb ncfb nofb ofb'

IN=$(cat $1)
OUT="/tmp/tmp.halosoutput"

for k in "${KEYS[@]}"
do
    for a in "${!ALGORITHMS[@]}"
    do
        for m in ${ALGORITHMS[$a][@]}
        do
            for o in "${KEYMODES[@]}"
            do
                echo $IN | mcrypt --decrypt --bare --quiet --key "$k" --algorithm $a --mode $m --keymode $o > $OUT 2> /dev/null
                result=$(file $OUT)
                result=${result:22}
                if [ "$result" != "data" ] && [ "$result" != "empty" ]; then
                    echo "======================================================"
                    echo "== Algorithm: $a-$m     Key: \"$k\"    KeyMode: $o"
                    echo "== FileType: $result"
                    cat $OUT
                    echo ""
                    echo ""
                fi
            done
        done
    done
done