{"id":33321,"date":"2021-08-04T16:09:31","date_gmt":"2021-08-04T20:09:31","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=33321"},"modified":"2021-08-04T16:09:31","modified_gmt":"2021-08-04T20:09:31","slug":"dyld-shared-cache-extractor","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2021\/08\/04\/dyld-shared-cache-extractor\/","title":{"rendered":"dyld-shared-cache-extractor"},"content":{"rendered":"<p><a href=\"https:\/\/github.com\/keith\/dyld-shared-cache-extractor\">Keith Smiley<\/a>:<\/p>\n<blockquote cite=\"https:\/\/github.com\/keith\/dyld-shared-cache-extractor\"><p>As of macOS Big Sur, instead of shipping the system libraries with macOS, Apple ships a generated cache of all built in dynamic libraries and excludes the originals. This tool allows you to extract these libraries from the cache for reverse engineering.<\/p><p>[&#8230;]<\/p><p>This tool loads the private\n<code>dsc_extractor.bundle<\/code> from Xcode, meaning whichever it should always be\nable to extract the newest versions of the file for beta OS versions.<\/p><p>This logic is based on the function at the bottom of\n<code>dyld3\/shared-cache\/dsc_extractor.cpp<\/code> from the <code>dyld<\/code> <a href=\"https:\/\/opensource.apple.com\">source dump<\/a>.<\/p><\/blockquote>\n\n<p>Previously:<\/p>\n<ul>\n<li><a href=\"https:\/\/mjtsai.com\/blog\/2021\/07\/22\/hopper-4-8\/\">Hopper 4.8<\/a><\/li>\n<li><a href=\"https:\/\/mjtsai.com\/blog\/2020\/06\/26\/reverse-engineering-macos-11-0\/\">Reverse Engineering macOS 11.0<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Keith Smiley: As of macOS Big Sur, instead of shipping the system libraries with macOS, Apple ships a generated cache of all built in dynamic libraries and excludes the originals. This tool allows you to extract these libraries from the cache for reverse engineering.[&#8230;]This tool loads the private dsc_extractor.bundle from Xcode, meaning whichever it should [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2021-08-04T20:09:35Z","apple_news_api_id":"41055041-707d-480b-baab-88b726495b92","apple_news_api_modified_at":"2021-08-04T20:09:35Z","apple_news_api_revision":"AAAAAAAAAAD\/\/\/\/\/\/\/\/\/\/w==","apple_news_api_share_url":"https:\/\/apple.news\/AQQVQQXB9SAu6q4i3Jklbkg","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[4],"tags":[75,205,30,1891,74,71],"class_list":["post-33321","post","type-post","status-publish","format-standard","hentry","category-programming-category","tag-developertool","tag-dyld","tag-mac","tag-macos-11-0","tag-opensource","tag-programming"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/33321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=33321"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/33321\/revisions"}],"predecessor-version":[{"id":33322,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/33321\/revisions\/33322"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=33321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=33321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=33321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}