Hacker Typer [292 Solves]

Description

Only the most leet hackers can type faster than my bot. Can you beat it?

https://hacker-typer.tuctf.com

Flag

TUCTF{SuP3R_Typ3R}

Solution

Iterate the process of entering the string displayed on Type the word in 150 times. First Time, extract the correct word from the HTML. From the second time onward, extract it from the JSON since the response after submission is JSON.

# solver.py
import requests
import re

requests.packages.urllib3.disable_warnings()
s = requests.Session()
# s.proxies = {"http": "http://127.0.0.1:8080", "https": "http://127.0.0.1:8080"}
s.verify = False


def main():
    BASE_URL = "https://hacker-typer.tuctf.com"

    res = s.get(BASE_URL)
    m = re.findall(r'Type the word: <strong name="word-title">(.*?)</strong>', res.text)
    if not m:
        print("not matched.")
        return

    word = m[0]

    try:
        for _ in range(151):
            res = s.post(f"{BASE_URL}/check_word", data={"word": word})
            res = res.json()
            word = res["next_word"]
    except:
        print(res)

    print(res)


if __name__ == "__main__":
    main()

result:

$ python3 solver.py
{'next_word': ' ', 'status': "You're fast! TUCTF{SuP3R_Typ3R}", 'typing_speed': 0}