Crypto

Tip

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์ด ์„น์…˜์€ ํ•ดํ‚น/CTFs๋ฅผ ์œ„ํ•œ ์‹ค๋ฌด ์•”ํ˜ธํ•™์— ์ค‘์ ์„ ๋‘ก๋‹ˆ๋‹ค: ์ผ๋ฐ˜์ ์ธ ํŒจํ„ด์„ ๋น ๋ฅด๊ฒŒ ์ธ์‹ํ•˜๊ณ , ์ ์ ˆํ•œ ๋„๊ตฌ๋ฅผ ์„ ํƒํ•˜๋ฉฐ, ์•Œ๋ ค์ง„ ๊ณต๊ฒฉ์„ ์ ์šฉํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ๋‹ค๋ฃน๋‹ˆ๋‹ค.

ํŒŒ์ผ ์•ˆ์— ๋ฐ์ดํ„ฐ๋ฅผ ์ˆจ๊ธฐ๋Š” ๋ชฉ์ ์ด๋ผ๋ฉด Stego ์„น์…˜์œผ๋กœ ๊ฐ€์„ธ์š”.

์ด ์„น์…˜ ์‚ฌ์šฉ ๋ฐฉ๋ฒ•

Crypto ์ฑŒ๋ฆฐ์ง€์—์„œ๋Š” ์†๋„๊ฐ€ ์ค‘์š”ํ•ฉ๋‹ˆ๋‹ค: primitive๋ฅผ ๋ถ„๋ฅ˜ํ•˜๊ณ , ์ œ์–ดํ•˜๋Š” ์š”์†Œ(oracle/leak/nonce reuse)๋ฅผ ์‹๋ณ„ํ•œ ๋’ค, ์•Œ๋ ค์ง„ ๊ณต๊ฒฉ ํ…œํ”Œ๋ฆฟ์„ ์ ์šฉํ•˜์„ธ์š”.

CTF workflow

Crypto CTF Workflow

Symmetric crypto

Symmetric Crypto

Hashes, MACs, and KDFs

Hashes, MACs & KDFs

Public-key crypto

Public-Key Crypto

TLS and certificates

TLS & Certificates

Crypto in malware

Crypto in Malware

Misc

Crypto CTF Misc

๋น ๋ฅธ ์„ค์ •

  • Python: python3 -m venv .venv && source .venv/bin/activate
  • Libraries: pip install pycryptodome gmpy2 sympy pwntools
  • SageMath (์ข…์ข… lattice/RSA/ECC์— ํ•„์ˆ˜์ ์ž„): https://www.sagemath.org/

Tip

AWS ํ•ดํ‚น ๋ฐฐ์šฐ๊ธฐ ๋ฐ ์—ฐ์Šตํ•˜๊ธฐ:HackTricks Training AWS Red Team Expert (ARTE)
GCP ํ•ดํ‚น ๋ฐฐ์šฐ๊ธฐ ๋ฐ ์—ฐ์Šตํ•˜๊ธฐ: HackTricks Training GCP Red Team Expert (GRTE) Azure ํ•ดํ‚น ๋ฐฐ์šฐ๊ธฐ ๋ฐ ์—ฐ์Šตํ•˜๊ธฐ: HackTricks Training Azure Red Team Expert (AzRTE)

HackTricks ์ง€์›ํ•˜๊ธฐ