$ cat writeup.md…
$ cat writeup.md…
srdnlen
Task: Echo server with off-by-one vulnerability in read loop. Solution: Overwrite maxlen to expand buffer, progressive stack leak via puts without null terminator, bypass canary and PIE via leaks, ret2libc ROP chain.
Permission denied (requires tier.pro)
Sign in with GitHub, Discord, or Google to continue. No email required.
$sign in$ grep --similar