{"id":4852,"date":"2023-11-22T19:44:12","date_gmt":"2023-11-22T10:44:12","guid":{"rendered":"https:\/\/www.photoguraphy.com\/?p=4852"},"modified":"2023-11-22T19:44:12","modified_gmt":"2023-11-22T10:44:12","slug":"picoctf-information-%ed%92%80%ec%9d%b4","status":"publish","type":"post","link":"https:\/\/www.photoguraphy.com\/?p=4852","title":{"rendered":"[picoCTF] information \ud480\uc774"},"content":{"rendered":"<p>\uc870\ud68c\uc218: 5<\/p><h2>\ubb38\uc81c<\/h2>\n<p><code>Files can always be changed in a secret way. Can you find the flag? cat.jpg<\/code><\/p>\n<hr \/>\n<p>\uadc0\uc5ec\uc6b4 \uace0\uc591\uc774 \uc0ac\uc9c4\uc5d0\uc11c \uc815\ubcf4\ub97c \uc5bb\ub294 \ubb38\uc81c\ub2e4. cat.jpg \ud30c\uc77c\uc744 \ub2e4\uc6b4\ubc1b\uc544 \uc0ac\uc9c4\uc744 \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uba74 \uc6b0\uce21\uc0c1\ub2e8\uc5d0 \uc2a4\uce7c\ub77c \uc778\ud130\ud504\ub9ac\ud130\ub85c \ubb54\uac00\ub97c \ud558\uace0\uc788\ub2e4. \uc544\ubb34 \uad00\ub828 \uc5c6\uc73c\ub2c8 \ub118\uc5b4\uac00\uc790\u314b<\/p>\n<p>\uc0ac\uc9c4+\uc815\ubcf4 \ud558\uba74 \uc77c\ub2e8\uc740 exif\ubd80\ud130 \ud655\uc778.<\/p>\n<pre><code class=\"language-bash line-numbers\">\u276f exiftool cat.jpg\nExifTool Version Number         : 12.70\nFile Name                       : cat.jpg\nDirectory                       : .\nFile Size                       : 878 kB\nFile Modification Date\/Time     : 2023:11:22 19:36:11+09:00\nFile Access Date\/Time           : 2023:11:22 19:36:11+09:00\nFile Inode Change Date\/Time     : 2023:11:22 19:36:11+09:00\nFile Permissions                : -rw-r--r--\nFile Type                       : JPEG\nFile Type Extension             : jpg\nMIME Type                       : image\/jpeg\nJFIF Version                    : 1.02\nResolution Unit                 : None\nX Resolution                    : 1\nY Resolution                    : 1\nCurrent IPTC Digest             : 7a78f3d9cfb1ce42ab5a3aa30573d617\nCopyright Notice                : PicoCTF\nApplication Record Version      : 4\nXMP Toolkit                     : Image::ExifTool 10.80\nLicense                         : cGljb0NURnt0aGVfbTN0YWRhdGFfMXNfbW9kaWZpZWR9\nRights                          : PicoCTF\nImage Width                     : 2560\nImage Height                    : 1598\nEncoding Process                : Baseline DCT, Huffman coding\nBits Per Sample                 : 8\nColor Components                : 3\nY Cb Cr Sub Sampling            : YCbCr4:2:0 (2 2)\nImage Size                      : 2560x1598\nMegapixels                      : 4.1\n\n<\/code><\/pre>\n<p>\ub77c\uc774\uc13c\uc2a4\uac00 \ubb54\uac00 \uc554\ub9cc\ubd10\ub3c4 \uc758\uc2ec\uc2a4\ub7fd\ub2e4.<\/p>\n<p>\uadf8\ub0e5 <code>picoCTF{cGljb0NURnt0aGVfbTN0YWRhdGFfMXNfbW9kaWZpZWR9}<\/code>\ub97c \uc815\ub2f5\uc774\ub78d\uc2dc\uace0 \uc81c\ucd9c\ud574 \ubcf8\ub2e4.<br \/>\n\ub2f9\uc5f0\ud788 \uc624\ub2f5.<\/p>\n<p><code>cGljb0NURnt0aGVfbTN0YWRhdGFfMXNfbW9kaWZpZWR9<\/code>\uac00 \ubb54\uac00\ub85c \uc778\ucf54\ub529 \ub41c \uac83 \uac19\uc740\ub370 \ubb54\uc9c0\ub294 \ubaa8\ub974\uaca0\ub2e4.<br \/>\n\uc778\ucf54\ub529-\ub514\ucf54\ub529\uc774 \uc790\uc720\ub85c\uc6b4 \ubc29\uc2dd \uc911 \uac00\uc7a5 \ub9ce\uc774\uc4f0\ub294 base64\ub85c \ub514\ucf54\ub529 \ud574\ubcf4\uc790.<\/p>\n<pre><code class=\"language-bash line-numbers\">\u276f echo cGljb0NURnt0aGVfbTN0YWRhdGFfMXNfbW9kaWZpZWR9 |base64 -d\n<\/code><\/pre>\n<p>\ub05d.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc870\ud68c\uc218: 5\ubb38\uc81c Files can always be changed in a secret way. Can you find the flag? cat.jpg \uadc0\uc5ec\uc6b4 \uace0\uc591\uc774 \uc0ac\uc9c4\uc5d0\uc11c \uc815\ubcf4\ub97c \uc5bb\ub294 \ubb38\uc81c\ub2e4. cat.jpg \ud30c\uc77c\uc744 \ub2e4\uc6b4\ubc1b\uc544 \uc0ac\uc9c4\uc744 \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uba74 \uc6b0\uce21\uc0c1\ub2e8\uc5d0 \uc2a4\uce7c\ub77c \uc778\ud130\ud504\ub9ac\ud130\ub85c \ubb54\uac00\ub97c \ud558\uace0\uc788\ub2e4. \uc544\ubb34 \uad00\ub828 \uc5c6\uc73c\ub2c8 \ub118\uc5b4\uac00\uc790\u314b \uc0ac\uc9c4+\uc815\ubcf4 \ud558\uba74 \uc77c\ub2e8\uc740 exif\ubd80\ud130 \ud655\uc778. \u276f exiftool cat.jpg ExifTool Version Number : 12.70 File Name : cat.jpg&hellip;<a href=\"https:\/\/www.photoguraphy.com\/?p=4852\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">[picoCTF] information \ud480\uc774<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[54,53],"class_list":["post-4852","post","type-post","status-publish","format-standard","hentry","category-computer","tag-ctf","tag-picoctf"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=\/wp\/v2\/posts\/4852","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4852"}],"version-history":[{"count":1,"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=\/wp\/v2\/posts\/4852\/revisions"}],"predecessor-version":[{"id":4853,"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=\/wp\/v2\/posts\/4852\/revisions\/4853"}],"wp:attachment":[{"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4852"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.photoguraphy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}