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HTTPヘッダー

Posted at

[picoCTF][Web Exploitation][Who are you?]

Wirteup

  • HTTPヘッダーの問題でした
    screenshot 57.png

  • User-Agent: PicoBrowserに変更
    screenshot 58.png

  • Referer: http://mercury.picoctf.net:1270/を追加
    screenshot 59.png

  • Date: Wed, 15 nov 2018 06:25:24 GMTを追加
    日付は適当です。
    screenshot 61.png

  • DNT: 1を追加
    推奨でないヘッダーのようです。
    screenshot 62.png

  • X-Forwarded-For: 103.45.246.0を追加
    screenshot 63.png

  • Accept-Language: sv-SEに変更
    screenshot 66.png
    screenshot 64.png


  • 変更・追加したヘッダーのまとめ
User-Agent: PicoBrowser
Referer: http://mercury.picoctf.net:1270/
Date: Wed, 15 nov 2018 06:25:24 GMT
DNT: 1
X-Forwarded-For: 103.45.246.0
Accept-Language: sv-SE
  • 以上です。

寄り道

  • とりあえずgif画像を分解してみた。
    何もなかった…。
sudo apt update
sudo apt install -y imagemagick
convert -coalesce who_r_u.gif target.png

参考サイト

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