App - System

I try to solve ELF32 - Format string bug basic 1, but I have a small problem.
I find password in Stack and when I enter it in form on the challenge page, page shows me message "Just try again!". I’m sure that password is correct.
I tested exploit in local machine and all was right.
[Ech0 : spoil]
What i am doing wrong ?

I will be grateful for any help.

You have to think about how the memory stores your data.
A good way to achieve this would be to recreate this on your own environment, and see how the memory stores your password by changing it and find out how the bytes should be read.

Hint: little vs big endian.

Resolved my issue. Not sure if there is a way to delete my reply.

i investigate for this challenge but i dont understand yet why [Ech0 : spoil]

somebody could help and explein me what does mean? how the people has the "20" value? i will apreciate any help, im training to CTF´s

Thanks a lot

i did what Dr3dD told ... in my environment i turned aslr off and did [Ech0 : spoil] but i get only a half part of the password ... any idea how to mount the hexa to ascii correctly ?
i think as following ... [Ech0 : spoil] i’m in the right way?
thanks

edit: [Ech0 : spoil]