2021-05-21から1日間の記事一覧

ctf4b 2020 Reversing 復習

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明日ctf4b 2021やるらしいので去年の問題を復習する。 2021-09-21 : 再走しました (Link) mask やるだけ。 >>> import string >>> enc_a = "atd4`qdedtUpetepqeUdaaeUeaqau" >>> enc_b = "c`b bk`kj`KbababcaKbacaKiacki" >>> enc_l = len(enc_a) >>> for i …

Sharif University CTF 2016 : dMd

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How to solve Just read the hardcoded data, and throw it to somekind of MD5 cracker (online tool is fine, I have used CrackStation.) Result: Flag grape

Sharif University CTF 2016 : Serial

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How to solve Just read the hardcoded flag. Flag EX9dmq4c8g9G7bAV

Sharif University CTF 2016 : SRM

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How to solve Decompile distributed executable file, and read hardcoded flag. Flag CZ9dmq4c8g9G7bAX

Sharif University CTF 2016 : Android App

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How to solve Decompile libadnjni.so using IDA or Ghidra to collect a characters of flag. 'e'+chr(0x66)+chr(0x35)+chr(0x37)+chr(0x66)+chr(0x33)+chr(0x66)+chr(0x65)+chr(0x33)+chr(99)+chr(0x66)+chr(0x36)+chr(0x30)+chr(0x33)+chr(99)+chr(0x30)+…