$ cat writeup.md…
$ cat writeup.md…
ringzer0ctf
Task: an SSH-hosted interactive number-guessing game requires guessing 10 numbers in [0,10000] under a 30s timer. Solution: automate the SSH session with pexpect and solve each round by binary search on the too small/too big feedback, handling the doubled prompt until all 10 rounds are won.
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$sign in$ grep --similar