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Ringzer0 - Java Script - Hashing is more secure

Ringzer0 - Java Script - Hashing is more secure

Objective:   Get that Flag

Solution:

So this is another javascript challenge so I started with the source code again

found this code

<script>
// Look's like weak JavaScript auth script :)
$(".c_submit").click(function(event) {
event.preventDefault();
var p = $("#cpass").val();
if(Sha1.hash(p) == "b89356ff6151527e89c4f3e3d30c8e6586c63962") {
if(document.location.href.indexOf("?p=") == -1) {
document.location = document.location.href + "?p=" + p;
}
} else {
$("#cresponse").html("<div class='alert alert-danger'>Wrong password sorry.</div>");
}
});



</script>


So this time the are checking the password supplied against a hashed value of the password

  if(Sha1.hash(p) == "b89356ff6151527e89c4f3e3d30c8e6586c63962 

so its taking a sha1 of what is supplied and checking it against this hash

so we just need to decrypt the sha1 its comparing against to get the flag






adminz

let's plug it in and see if we are right


we got the flag 

FLAG-bXNsYg9tLCaIX6h1UiQMmMYB 



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