My solutions for CTFs
Daily AlpacaHack 2025/12/14
Takumi Akimoto
(Dec 15, 2025, 2:09 PM +0900)
5fe602b7
7c560b94
+26
+21
alpacahack/daily/power-obfus-royalty/decode_ps1.ts
+21
alpacahack/daily/power-obfus-royalty/decode_ps1.ts
···
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const decoder = new TextDecoder()
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let input = ""
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for await (const chunk of Deno.stdin.readable) {
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input += decoder.decode(chunk)
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}
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input = input.replace(/\0/g, "")
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let output = input.replace(
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/(?:\+\s*)?\[char\]\s*(\d+)/gi,
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(_, code) => {
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const charCode = parseInt(code, 10)
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const char = String.fromCharCode(charCode)
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return char
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},
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)
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output = output.replace(/([\w"')]|\))\s*\+\s*(?=["'(\w])/g, "$1")
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console.log(output)