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6_users_information.sh
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6_users_information.sh
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###########################################
#----------) Users Information (----------#
###########################################
#-- UI) My user
print_2title "My user"
print_info "https://book.hacktricks.xyz/linux-hardening/privilege-escalation#users"
(id || (whoami && groups)) 2>/dev/null | sed -${E} "s,$groupsB,${SED_RED},g" | sed -${E} "s,$groupsVB,${SED_RED_YELLOW},g" | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN},g" | sed "s,$USER,${SED_LIGHT_MAGENTA},g" | sed -${E} "s,$nosh_usrs,${SED_BLUE},g" | sed -${E} "s,$knw_usrs,${SED_GREEN},g" | sed "s,root,${SED_RED}," | sed -${E} "s,$knw_grps,${SED_GREEN},g" | sed -${E} "s,$idB,${SED_RED},g"
echo ""
if [ "$MACPEAS" ];then
print_2title "Current user Login and Logout hooks"
defaults read $HOME/Library/Preferences/com.apple.loginwindow.plist 2>/dev/null | grep -e "Hook"
echo ""
print_2title "All Login and Logout hooks"
defaults read /Users/*/Library/Preferences/com.apple.loginwindow.plist 2>/dev/null | grep -e "Hook"
defaults read /private/var/root/Library/Preferences/com.apple.loginwindow.plist
echo ""
print_2title "Keychains"
print_info "https://book.hacktricks.xyz/macos/macos-security-and-privilege-escalation#chainbreaker"
security list-keychains
echo ""
print_2title "SystemKey"
ls -l /var/db/SystemKey
if [ -r "/var/db/SystemKey" ]; then
echo "You can read /var/db/SystemKey" | sed -${E} "s,.*,${SED_RED_YELLOW},";
hexdump -s 8 -n 24 -e '1/1 "%.2x"' /var/db/SystemKey | sed -${E} "s,.*,${SED_RED_YELLOW},";
fi
echo ""
fi
#-- UI) PGP keys?
print_2title "Do I have PGP keys?"
command -v gpg 2>/dev/null || echo_not_found "gpg"
gpg --list-keys 2>/dev/null
command -v netpgpkeys 2>/dev/null || echo_not_found "netpgpkeys"
netpgpkeys --list-keys 2>/dev/null
command -v netpgp 2>/dev/null || echo_not_found "netpgp"
echo ""
#-- UI) Clipboard and highlighted text
if [ "$(command -v xclip 2>/dev/null)" ] || [ "$(command -v xsel 2>/dev/null)" ] || [ "$(command -v pbpaste 2>/dev/null)" ] || [ "$DEBUG" ]; then
print_2title "Clipboard or highlighted text?"
if [ "$(command -v xclip 2>/dev/null)" ]; then
echo "Clipboard: "$(xclip -o -selection clipboard 2>/dev/null) | sed -${E} "s,$pwd_inside_history,${SED_RED},"
echo "Highlighted text: "$(xclip -o 2>/dev/null) | sed -${E} "s,$pwd_inside_history,${SED_RED},"
elif [ "$(command -v xsel 2>/dev/null)" ]; then
echo "Clipboard: "$(xsel -ob 2>/dev/null) | sed -${E} "s,$pwd_inside_history,${SED_RED},"
echo "Highlighted text: "$(xsel -o 2>/dev/null) | sed -${E} "s,$pwd_inside_history,${SED_RED},"
elif [ "$(command -v pbpaste 2>/dev/null)" ]; then
echo "Clipboard: "$(pbpaste) | sed -${E} "s,$pwd_inside_history,${SED_RED},"
else echo_not_found "xsel and xclip"
fi
echo ""
fi
#-- UI) Sudo -l
print_2title "Checking 'sudo -l', /etc/sudoers, and /etc/sudoers.d"
print_info "https://book.hacktricks.xyz/linux-hardening/privilege-escalation#sudo-and-suid"
(echo '' | timeout 1 sudo -S -l | sed "s,_proxy,${SED_RED},g" | sed "s,$sudoG,${SED_GREEN},g" | sed -${E} "s,$sudoVB1,${SED_RED_YELLOW}," | sed -${E} "s,$sudoVB2,${SED_RED_YELLOW}," | sed -${E} "s,$sudoB,${SED_RED},g" | sed "s,\!root,${SED_RED},") 2>/dev/null || echo_not_found "sudo"
if [ "$PASSWORD" ]; then
(echo "$PASSWORD" | timeout 1 sudo -S -l | sed "s,_proxy,${SED_RED},g" | sed "s,$sudoG,${SED_GREEN},g" | sed -${E} "s,$sudoVB1,${SED_RED_YELLOW}," | sed -${E} "s,$sudoVB2,${SED_RED_YELLOW}," | sed -${E} "s,$sudoB,${SED_RED},g") 2>/dev/null || echo_not_found "sudo"
fi
( grep -Iv "^$" cat /etc/sudoers | grep -v "#" | sed "s,_proxy,${SED_RED},g" | sed "s,$sudoG,${SED_GREEN},g" | sed -${E} "s,$sudoVB1,${SED_RED_YELLOW}," | sed -${E} "s,$sudoVB2,${SED_RED_YELLOW}," | sed -${E} "s,$sudoB,${SED_RED},g" | sed "s,pwfeedback,${SED_RED},g" ) 2>/dev/null || echo_not_found "/etc/sudoers"
if ! [ "$IAMROOT" ] && [ -w '/etc/sudoers.d/' ]; then
echo "You can create a file in /etc/sudoers.d/ and escalate privileges" | sed -${E} "s,.*,${SED_RED_YELLOW},"
fi
for filename in /etc/sudoers.d/*; do
if [ -r "$filename" ]; then
echo "Sudoers file: $filename is readable" | sed -${E} "s,.*,${SED_RED},g"
grep -Iv "^$" "$filename" | grep -v "#" | sed "s,_proxy,${SED_RED},g" | sed "s,$sudoG,${SED_GREEN},g" | sed -${E} "s,$sudoVB1,${SED_RED_YELLOW}," | sed -${E} "s,$sudoVB2,${SED_RED_YELLOW}," | sed -${E} "s,$sudoB,${SED_RED},g" | sed "s,pwfeedback,${SED_RED},g"
fi
done
echo ""
#-- UI) Sudo tokens
print_2title "Checking sudo tokens"
print_info "https://book.hacktricks.xyz/linux-hardening/privilege-escalation#reusing-sudo-tokens"
ptrace_scope="$(cat /proc/sys/kernel/yama/ptrace_scope 2>/dev/null)"
if [ "$ptrace_scope" ] && [ "$ptrace_scope" -eq 0 ]; then
echo "ptrace protection is disabled (0), so sudo tokens could be abused" | sed "s,is disabled,${SED_RED},g";
if [ "$(command -v gdb 2>/dev/null)" ]; then
echo "gdb was found in PATH" | sed -${E} "s,.*,${SED_RED},g";
fi
if [ "$CURRENT_USER_PIVOT_PID" ]; then
echo "The current user proc $CURRENT_USER_PIVOT_PID is the parent of a different user proccess" | sed -${E} "s,.*,${SED_RED},g";
fi
if [ -f "$HOME/.sudo_as_admin_successful" ]; then
echo "Current user has .sudo_as_admin_successful file, so he can execute with sudo" | sed -${E} "s,.*,${SED_RED},";
fi
if ps -eo pid,command -u "$(id -u)" | grep -v "$PPID" | grep -v " " | grep -qE '(ash|ksh|csh|dash|bash|zsh|tcsh|sh)$'; then
echo "Current user has other interactive shells running: " | sed -${E} "s,.*,${SED_RED},g";
ps -eo pid,command -u "$(id -u)" | grep -v "$PPID" | grep -v " " | grep -E '(ash|ksh|csh|dash|bash|zsh|tcsh|sh)$'
fi
else
echo "ptrace protection is enabled ($ptrace_scope)" | sed "s,is enabled,${SED_GREEN},g";
fi
echo ""
#-- UI) Doas
if [ -f "/etc/doas.conf" ] || [ "$DEBUG" ]; then
print_2title "Checking doas.conf"
doas_dir_name=$(dirname "$(command -v doas)" 2>/dev/null)
if [ "$(cat /etc/doas.conf $doas_dir_name/doas.conf $doas_dir_name/../etc/doas.conf $doas_dir_name/etc/doas.conf 2>/dev/null)" ]; then
cat /etc/doas.conf "$doas_dir_name/doas.conf" "$doas_dir_name/../etc/doas.conf" "$doas_dir_name/etc/doas.conf" 2>/dev/null | sed -${E} "s,$sh_usrs,${SED_RED}," | sed "s,root,${SED_RED}," | sed "s,nopass,${SED_RED}," | sed -${E} "s,$nosh_usrs,${SED_BLUE}," | sed "s,$USER,${SED_RED_YELLOW},"
else echo_not_found "doas.conf"
fi
echo ""
fi
#-- UI) Pkexec policy
print_2title "Checking Pkexec policy"
print_info "https://book.hacktricks.xyz/linux-hardening/privilege-escalation/interesting-groups-linux-pe#pe-method-2"
(cat /etc/polkit-1/localauthority.conf.d/* 2>/dev/null | grep -v "^#" | grep -Ev "\W+\#|^#" 2>/dev/null | sed -${E} "s,$groupsB,${SED_RED}," | sed -${E} "s,$groupsVB,${SED_RED}," | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN}," | sed -${E} "s,$nosh_usrs,${SED_BLUE}," | sed "s,$USER,${SED_RED_YELLOW}," | sed -${E} "s,$Groups,${SED_RED_YELLOW},") || echo_not_found "/etc/polkit-1/localauthority.conf.d"
echo ""
#-- UI) Superusers
print_2title "Superusers"
awk -F: '($3 == "0") {print}' /etc/passwd 2>/dev/null | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN}," | sed -${E} "s,$nosh_usrs,${SED_BLUE}," | sed -${E} "s,$knw_usrs,${SED_GREEN}," | sed "s,$USER,${SED_RED_YELLOW}," | sed "s,root,${SED_RED},"
echo ""
#-- UI) Users with console
print_2title "Users with console"
if [ "$MACPEAS" ]; then
dscl . list /Users | while read uname; do
ushell=$(dscl . -read "/Users/$uname" UserShell | cut -d " " -f2)
if grep -q "$ushell" /etc/shells; then #Shell user
dscl . -read "/Users/$uname" UserShell RealName RecordName Password NFSHomeDirectory 2>/dev/null | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN}," | sed "s,$USER,${SED_LIGHT_MAGENTA}," | sed "s,root,${SED_RED},"
echo ""
fi
done
else
no_shells=$(grep -Ev "sh$" /etc/passwd 2>/dev/null | cut -d ':' -f 7 | sort | uniq)
unexpected_shells=""
printf "%s\n" "$no_shells" | while read f; do
if $f -c 'whoami' 2>/dev/null | grep -q "$USER"; then
unexpected_shells="$f\n$unexpected_shells"
fi
done
grep "sh$" /etc/passwd 2>/dev/null | sort | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN}," | sed "s,$USER,${SED_LIGHT_MAGENTA}," | sed "s,root,${SED_RED},"
if [ "$unexpected_shells" ]; then
printf "%s" "These unexpected binaries are acting like shells:\n$unexpected_shells" | sed -${E} "s,/.*,${SED_RED},g"
echo "Unexpected users with shells:"
printf "%s\n" "$unexpected_shells" | while read f; do
if [ "$f" ]; then
grep -E "${f}$" /etc/passwd | sed -${E} "s,/.*,${SED_RED},g"
fi
done
fi
fi
echo ""
#-- UI) All users & groups
print_2title "All users & groups"
if [ "$MACPEAS" ]; then
dscl . list /Users | while read i; do id $i;done 2>/dev/null | sort | sed -${E} "s,$groupsB,${SED_RED},g" | sed -${E} "s,$groupsVB,${SED_RED},g" | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN},g" | sed "s,$USER,${SED_LIGHT_MAGENTA},g" | sed -${E} "s,$nosh_usrs,${SED_BLUE},g" | sed -${E} "s,$knw_usrs,${SED_GREEN},g" | sed "s,root,${SED_RED}," | sed -${E} "s,$knw_grps,${SED_GREEN},g"
else
cut -d":" -f1 /etc/passwd 2>/dev/null| while read i; do id $i;done 2>/dev/null | sort | sed -${E} "s,$groupsB,${SED_RED},g" | sed -${E} "s,$groupsVB,${SED_RED},g" | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN},g" | sed "s,$USER,${SED_LIGHT_MAGENTA},g" | sed -${E} "s,$nosh_usrs,${SED_BLUE},g" | sed -${E} "s,$knw_usrs,${SED_GREEN},g" | sed "s,root,${SED_RED}," | sed -${E} "s,$knw_grps,${SED_GREEN},g"
fi
echo ""
#-- UI) Login now
print_2title "Login now"
(w || who || finger || users) 2>/dev/null | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN}," | sed -${E} "s,$nosh_usrs,${SED_BLUE}," | sed -${E} "s,$knw_usrs,${SED_GREEN}," | sed "s,$USER,${SED_LIGHT_MAGENTA}," | sed "s,root,${SED_RED},"
echo ""
#-- UI) Last logons
print_2title "Last logons"
(last -Faiw || last) 2>/dev/null | tail | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN}," | sed -${E} "s,$nosh_usrs,${SED_RED}," | sed -${E} "s,$knw_usrs,${SED_GREEN}," | sed "s,$USER,${SED_LIGHT_MAGENTA}," | sed "s,root,${SED_RED},"
echo ""
#-- UI) Login info
print_2title "Last time logon each user"
lastlog 2>/dev/null | grep -v "Never" | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN}," | sed -${E} "s,$nosh_usrs,${SED_BLUE}," | sed -${E} "s,$knw_usrs,${SED_GREEN}," | sed "s,$USER,${SED_LIGHT_MAGENTA}," | sed "s,root,${SED_RED},"
EXISTS_FINGER="$(command -v finger 2>/dev/null)"
if [ "$MACPEAS" ] && [ "$EXISTS_FINGER" ]; then
dscl . list /Users | while read uname; do
ushell=$(dscl . -read "/Users/$uname" UserShell | cut -d " " -f2)
if grep -q "$ushell" /etc/shells; then #Shell user
finger "$uname" | sed -${E} "s,$sh_usrs,${SED_LIGHT_CYAN}," | sed -${E} "s,$nosh_usrs,${SED_BLUE}," | sed -${E} "s,$knw_usrs,${SED_GREEN}," | sed "s,$USER,${SED_LIGHT_MAGENTA}," | sed "s,root,${SED_RED},"
echo ""
fi
done
fi
echo ""
#-- UI) Password policy
if [ "$EXTRA_CHECKS" ]; then
print_2title "Password policy"
grep "^PASS_MAX_DAYS\|^PASS_MIN_DAYS\|^PASS_WARN_AGE\|^ENCRYPT_METHOD" /etc/login.defs 2>/dev/null || echo_not_found "/etc/login.defs"
echo ""
if [ "$MACPEAS" ]; then
print_2title "Relevant last user info and user configs"
defaults read /Library/Preferences/com.apple.loginwindow.plist 2>/dev/null
echo ""
print_2title "Guest user status"
sysadminctl -afpGuestAccess status | sed -${E} "s,enabled,${SED_RED}," | sed -${E} "s,disabled,${SED_GREEN},"
sysadminctl -guestAccount status | sed -${E} "s,enabled,${SED_RED}," | sed -${E} "s,disabled,${SED_GREEN},"
sysadminctl -smbGuestAccess status | sed -${E} "s,enabled,${SED_RED}," | sed -${E} "s,disabled,${SED_GREEN},"
echo ""
fi
fi
#-- UI) Brute su
if ! [ "$FAST" ] && ! [ "$SUPERFAST" ] && [ "$TIMEOUT" ] && ! [ "$IAMROOT" ]; then
print_2title "Testing 'su' as other users with shell using as passwords: null pwd, the username and top2000pwds\n"$NC
POSSIBE_SU_BRUTE=$(check_if_su_brute);
if [ "$POSSIBE_SU_BRUTE" ]; then
SHELLUSERS=$(cat /etc/passwd 2>/dev/null | grep -i "sh$" | cut -d ":" -f 1)
printf "%s\n" "$SHELLUSERS" | while read u; do
echo " Bruteforcing user $u..."
su_brute_user_num "$u" $PASSTRY
done
else
printf $GREEN"It's not possible to brute-force su.\n\n"$NC
fi
else
print_2title "Do not forget to test 'su' as any other user with shell: without password and with their names as password (I don't do it in FAST mode...)\n"$NC
fi
print_2title "Do not forget to execute 'sudo -l' without password or with valid password (if you know it)!!\n"$NC