title = "strings only"

category = "pwn"
difficulty = 6
author = "elbee"
discord = "elbee3779"
flag = "pctf{a_byte_is_all_i_need_b72c9d241a2}"

description = '''
Even if you did find something wrong with my app, what could you possibly do with just strings?
'''

The challenge is a glibc heap challenge that utilizes the project zero null 
byte technique to create overlapping chunks and create a dup primitive over
the key variable on main's stack (the index option can be used to create a fake fast chunk). See solver in ./writeup.