59 lines
3 KiB
Python
59 lines
3 KiB
Python
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import win32security,win32file,win32api,ntsecuritycon,win32con, os
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from win32security import ACL_REVISION_DS, CONTAINER_INHERIT_ACE, OBJECT_INHERIT_ACE, \
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PROTECTED_DACL_SECURITY_INFORMATION, DACL_SECURITY_INFORMATION, SACL_SECURITY_INFORMATION, \
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OWNER_SECURITY_INFORMATION, GROUP_SECURITY_INFORMATION, SE_FILE_OBJECT
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## SE_SECURITY_NAME needed to access SACL, SE_RESTORE_NAME needed to change owner to someone other than yourself
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new_privs = ((win32security.LookupPrivilegeValue('',ntsecuritycon.SE_SECURITY_NAME),win32con.SE_PRIVILEGE_ENABLED),
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(win32security.LookupPrivilegeValue('',ntsecuritycon.SE_RESTORE_NAME),win32con.SE_PRIVILEGE_ENABLED),
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)
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ph = win32api.GetCurrentProcess()
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th = win32security.OpenProcessToken(ph,win32security.TOKEN_ALL_ACCESS|win32con.TOKEN_ADJUST_PRIVILEGES)
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modified_privs=win32security.AdjustTokenPrivileges(th,0,new_privs)
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## look up a few sids that should be available on most systems
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my_sid = win32security.GetTokenInformation(th,ntsecuritycon.TokenUser)[0]
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pwr_sid = win32security.LookupAccountName('','Power Users')[0]
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admin_sid = win32security.LookupAccountName('','Administrators')[0]
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everyone_sid=win32security.LookupAccountName('','EveryOne')[0]
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## create a dir and set security so Everyone has read permissions, and all files and subdirs inherit its ACLs
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temp_dir=win32api.GetTempPath()
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dir_name=win32api.GetTempFileName(temp_dir,'sfa')[0]
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os.remove(dir_name)
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os.mkdir(dir_name)
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dir_dacl=win32security.ACL()
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dir_dacl.AddAccessAllowedAceEx(ACL_REVISION_DS, CONTAINER_INHERIT_ACE|OBJECT_INHERIT_ACE, win32con.GENERIC_READ, everyone_sid)
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## make sure current user has permissions on dir
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dir_dacl.AddAccessAllowedAceEx(ACL_REVISION_DS, CONTAINER_INHERIT_ACE|OBJECT_INHERIT_ACE, win32con.GENERIC_ALL, my_sid)
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## keep dir from inheriting any permissions so it only has ACEs explicitely set here
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win32security.SetNamedSecurityInfo(dir_name, SE_FILE_OBJECT,
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OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION|DACL_SECURITY_INFORMATION|PROTECTED_DACL_SECURITY_INFORMATION,
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pwr_sid, pwr_sid, dir_dacl, None)
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## Create a file in the dir and add some specific permissions to it
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fname=win32api.GetTempFileName(dir_name,'sfa')[0]
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print(fname)
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file_sd=win32security.GetNamedSecurityInfo(fname, SE_FILE_OBJECT, DACL_SECURITY_INFORMATION|SACL_SECURITY_INFORMATION)
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file_dacl=file_sd.GetSecurityDescriptorDacl()
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file_sacl=file_sd.GetSecurityDescriptorSacl()
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if file_dacl is None:
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file_dacl=win32security.ACL()
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if file_sacl is None:
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file_sacl=win32security.ACL()
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file_dacl.AddAccessDeniedAce(file_dacl.GetAclRevision(),win32con.DELETE,admin_sid)
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file_dacl.AddAccessDeniedAce(file_dacl.GetAclRevision(),win32con.DELETE,my_sid)
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file_dacl.AddAccessAllowedAce(file_dacl.GetAclRevision(),win32con.GENERIC_ALL,pwr_sid)
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file_sacl.AddAuditAccessAce(file_dacl.GetAclRevision(),win32con.GENERIC_ALL,my_sid,True,True)
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win32security.SetNamedSecurityInfo(fname, SE_FILE_OBJECT,
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DACL_SECURITY_INFORMATION|SACL_SECURITY_INFORMATION,
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None, None, file_dacl, file_sacl)
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win32security.AdjustTokenPrivileges(th, 0, modified_privs)
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