Hi๐Ÿ‘‹๐Ÿผ Iโ€™m HAHWUL.

Offensive Security Engineer, Rubyist/Crystalist/Gopher and H4cker

Posts - Page 59 of 86

[HACKING] Adobe Flash Player NetConnection Type Confusion(CVE-2015-0336) ๋ถ„์„

  • 3 min read

์˜ค๋žœ๋งŒ์— ์ทจ์•ฝ์  ๋ถ„์„๊ธ€์„ ์ž‘์„ฑํ•ฉ๋‹ˆ๋‹ค. ๋ณ„๋‹ค๋ฅธ๊ฑด ์•„๋‹ˆ๊ณ  x90c์™€ ๋ฉ”์ผ๋กœ ์ด์•ผ๊ธฐํ•˜๋˜ ๊ฑด์ด ์žˆ๋Š”๋ฐ, ํ‡ด๊ทผ๊ธธ์— ๋ณด๋‹ค๋ณด๋‹ˆ ํฌ์ŠคํŒ…๊ฑฐ๋ฆฌ๊ฐ€ ๋˜์–ด๋ฒ„๋ ธ๋„ค์š”. (์•„๊น์ž–์•„์š”..)

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[DOCKER] ๋„์ปค ์ปจํ…Œ์ด๋„ˆ, ํ˜ธ์ŠคํŠธ๊ฐ„ ํŒŒ์ผ ์ „์†ก/๋ฐ›๊ธฐ(How to send/recive docker container)

  • ~1 min read

๊ทธ๋ƒฅ ๋ฉ”๋ชจ ์ฐจ์›์œผ๋กœ ์ž‘์„ฑํ•ฉ๋‹ˆ๋‹ค. docker container ์™€ ํ˜ธ์ŠคํŠธ ๊ฐ„ ํŒŒ์ผ ์ด๋™ ์‹œ cp, scp ์™€ ๋™์ผํ•˜๋‹ˆ ์‰ฝ๊ฒŒ ์ƒ๊ฐํ•˜๋ฉด ๋ฉ๋‹ˆ๋‹ค.

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[ROR] Ruby on Rails โ€œcannot load such file โ€“ [package]โ€ ํ•ด๊ฒฐ ๋ฐฉ๋ฒ•

  • 1 min read

์™œ๊ทธ๋Ÿฐ์ง„ ์ž˜ ๋ชจ๋ฅด๊ฒ ์ง€๋งŒ ์˜ค๋Š˜ ์—…๋ฐ์ดํŠธ ์ดํ›„์— rails ์„œ๋ฒ„ ์‹œ์ž‘ ์‹œ ์—๋Ÿฌ๊ฐ€ ๋ฐœ์ƒํ•ฉ๋‹ˆ๋‹ค. ๋‚ด์šฉ์„ ๋ณด์ž๋‹ˆ.. mime/types๋ฅผ ์ฐพ์„ ์ˆ˜ ์—†๋‹ค๊ณ  ํ•˜๋„ค์š”.

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[RUBY] nokogiri install/update ์—๋Ÿฌ ํ•ด๊ฒฐํ•˜๊ธฐ(An error occurred while installing nokogiri (1.8.2), and Bundler cannot continue.)

  • 1 min read

๊ฐ„๋งŒ์— ๋ ˆ์ผ์ฆˆ ๋–”์— ๋ฃจ๋น„ ๊ฐ€์ง€๊ณ  ๋†€๋˜ ์ค‘ nokogiri๊ฐ€ ๊ณ ์žฅ๋‚ฌ์Šต๋‹ˆ๋‹ค. (๋Œ€์ฒด๋กœ ๋ถ€ํŒ…๊ณผ ํ•จ๊ป˜ ํŒจํ‚ค์ง€ ์—…๋ฐ์ดํŠธ๋ฅผ ํ•˜๋Š”๋ฐ, ๊ทธ๊ฒŒ ๋ฌธ์ œ์˜€์ฃ ..)

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iframe์˜ height:100%๊ฐ€ ์•ˆ๋  ๋•Œ viewport๋ฅผ ์ด์šฉํ•˜์—ฌ ํ•ด๊ฒฐํ•˜๊ธฐ

  • ~1 min read

iframe ํƒœ๊ทธ๋ฅผ ์“ฐ๋‹ค๋ณด๋ฉด ๊ฐ„ํ˜น ๋†’์ด๊ฐ€ 100%๊ฐ€ ์•ˆ๋˜๋Š” ์ƒํ™ฉ์ด ๋ฐœ์ƒํ•ฉ๋‹ˆ๋‹ค. ๋˜ํ•œ ๋‹ค๋ฅธ ์š”์†Œ๋“ค์˜ ํฌ๊ธฐ๋ฅผ ์กฐ์ •ํ•˜๋‹ค๊ฐ€ %์˜ ํฌ๊ธฐ๋กœ ํ™”๋ฉด์„ ๋„˜์–ด๊ฐ€๊ธฐ๋„ ํ•ฉ๋‹ˆ๋‹ค.

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[HACKING] TCPโ€‘Starvation Attack (DOS Attack on TCP Sessions)

  • 1 min read

์š”์ฆ˜์€ edb์ชฝ ๋ฌธ์„œ๋ฅผ ์ž์ฃผ ๋ณด์ง„ ๋ชปํ•˜์ง€๋งŒ.. ์ฃผ๋ง๋ถ€ํ„ฐ ํ‹ˆ๋‚ ๋•Œ๋งˆ๋‹ค ํ•˜๋‚˜ ๋ด๋‘”๊ฒŒ ์žˆ์Šต๋‹ˆ๋‹ค. ์˜ค๋Š˜ ์ •๋ฆฌํ•ด์„œ ์ž‘์„ฑํ•ด๋ด…๋‹ˆ๋‹ค.

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[CODING] Backspace,Delete not working in vim insert mode(vim์—์„œ ์‚ญ์ œ๊ฐ€ ์ž˜ ๋˜์ง€ ์•Š์„๋•Œ)

  • ~1 min read

๊ฐ„ํ˜น ์‹œ์Šคํ…œ์— ๋”ฐ๋ผ vim์ด ๋ง›์ด๊ฐ‘๋‹ˆ๋‹ค. backspace ํ‚ค๊ฐ€ ์ •์ƒ ์ž‘๋™ํ•˜์ง€ ์•Š์„๋•Œ ๊ต‰์žฅํžˆ ๋‹ต๋‹ตํ•œ๋ฐ์š”.. vimrc์— ํ•œ์ค„ ์ถ”๊ฐ€๋กœ ์‰ฝ๊ฒŒ ํ•ด๊ฒฐ๋ฉ๋‹ˆ๋‹ค.

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Vim์—์„œ์˜ ๊ฐœ๋ฐœ์„ ์œ„ํ•œ ์ตœ์†Œํ•œ์˜ plugin ์„ค์ •

  • 1 min read

๋งค๋ฒˆ ๋Š๋ผ์ง€๋งŒ ๊ธ€๋กœ ์ž‘์„ฑํ•˜์ง€ ์•Š์€ ๋‚ด์šฉ๋“ค์€ ๋‚˜์ค‘์— ๋‹ค์‹œ ์„ธํŒ…ํ•˜๊ฑฐ๋‚˜, ์ฐธ๊ณ ํ•ด์•ผํ•  ๋•Œ ์ฐธ ๋ถˆํŽธํ•ฉ๋‹ˆ๋‹ค. ๊ผญ ํ•„์š”ํ•  ๋•Œ ๋ณด๋ฉด ์—†๋‹ค์ฃ . ์ตœ๊ทผ์—๋„ vim ์„ธํŒ…์„ ๋‹ค์‹œ ํ• ์ผ์ด ์žˆ์–ด ํ•˜๋‚˜ํ•˜๋‚˜ ์„ธํŒ…ํ•˜๊ณ  ์žˆ๋Š”๋ฐ, ํ•œ๋ฒˆ์ฏค์€ ๋ฉ”๋ชจํ•ด๋‘๋ฉด ๋‘๊ณ ๋‘๊ณ  ๋ณผ ๊ฒƒ ๊ฐ™๋‹ค๋ผ๋Š” ์ƒ๊ฐ์ด ๋“ค์—ˆ์Šต๋‹ˆ๋‹ค. ์งง๊ฒŒ๋‚˜๋งˆ ์‹œ๊ฐ„ ๋‚ด์–ด์„œ ๊ธ€ ์ž‘์„ฑํ•ด๋ด…๋‹ˆ๋‹ค.

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Learning Go Language - Hello world, GoRoutine

  • 2 min read

์š”์ฆ˜ Go langage๋ฅผ ๋ฐฐ์›Œ๋ณผ๊นŒ ํ•ฉ๋‹ˆ๋‹ค. ๊ทธ๋ž˜์„œ ์•„์ฃผ ์ฒœ์ฒœํžˆ ํ‹ˆ๋‚ ๋•Œ๋งˆ๋‹ค ๋ณด๊ณ ์žˆ๋Š”๋ฐ, ์กฐ๊ธˆ์”ฉ์€ ์ •๋ฆฌํ•ด์„œ ํฌ์ŠคํŒ…ํ•ด๋ณผ๊นŒ ํ•ฉ๋‹ˆ๋‹ค. ์•„๋งˆ ์ต์ˆ™ํ•ด์ง€๋ฉด Ruby์™€ ์„ž์–ด์„œ ์ฝ”๋”ฉํ•˜๊ฒŒ ๋  ๊ฒƒ ๊ฐ™๋„ค์š”.

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