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298 lines
15 KiB
C++
298 lines
15 KiB
C++
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/***************************************************************************
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* payload.cc -- Retrieval of UDP payloads. *
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* *
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***********************IMPORTANT NMAP LICENSE TERMS************************
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* *
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* The Nmap Security Scanner is (C) 1996-2009 Insecure.Com LLC. Nmap is *
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* also a registered trademark of Insecure.Com LLC. This program is free *
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* software; you may redistribute and/or modify it under the terms of the *
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* GNU General Public License as published by the Free Software *
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* Foundation; Version 2 with the clarifications and exceptions described *
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* below. This guarantees your right to use, modify, and redistribute *
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* this software under certain conditions. If you wish to embed Nmap *
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* technology into proprietary software, we sell alternative licenses *
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* (contact sales@insecure.com). Dozens of software vendors already *
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* license Nmap technology such as host discovery, port scanning, OS *
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* detection, and version detection. *
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* *
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* Note that the GPL places important restrictions on "derived works", yet *
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* it does not provide a detailed definition of that term. To avoid *
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* misunderstandings, we consider an application to constitute a *
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* "derivative work" for the purpose of this license if it does any of the *
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* following: *
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* o Integrates source code from Nmap *
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* o Reads or includes Nmap copyrighted data files, such as *
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* nmap-os-db or nmap-service-probes. *
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* o Executes Nmap and parses the results (as opposed to typical shell or *
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* execution-menu apps, which simply display raw Nmap output and so are *
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* not derivative works.) *
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* o Integrates/includes/aggregates Nmap into a proprietary executable *
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* installer, such as those produced by InstallShield. *
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* o Links to a library or executes a program that does any of the above *
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* *
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* The term "Nmap" should be taken to also include any portions or derived *
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* works of Nmap. This list is not exclusive, but is meant to clarify our *
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* interpretation of derived works with some common examples. Our *
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* interpretation applies only to Nmap--we don't speak for other people's *
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* GPL works. *
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* *
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* If you have any questions about the GPL licensing restrictions on using *
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* Nmap in non-GPL works, we would be happy to help. As mentioned above, *
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* we also offer alternative license to integrate Nmap into proprietary *
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* applications and appliances. These contracts have been sold to dozens *
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* of software vendors, and generally include a perpetual license as well *
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* as providing for priority support and updates as well as helping to *
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* fund the continued development of Nmap technology. Please email *
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* sales@insecure.com for further information. *
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* *
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* As a special exception to the GPL terms, Insecure.Com LLC grants *
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* permission to link the code of this program with any version of the *
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* OpenSSL library which is distributed under a license identical to that *
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* listed in the included COPYING.OpenSSL file, and distribute linked *
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* combinations including the two. You must obey the GNU GPL in all *
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* respects for all of the code used other than OpenSSL. If you modify *
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* this file, you may extend this exception to your version of the file, *
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* but you are not obligated to do so. *
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* *
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* If you received these files with a written license agreement or *
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* contract stating terms other than the terms above, then that *
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* alternative license agreement takes precedence over these comments. *
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* *
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* Source is provided to this software because we believe users have a *
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* right to know exactly what a program is going to do before they run it. *
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* This also allows you to audit the software for security holes (none *
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* have been found so far). *
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* *
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* Source code also allows you to port Nmap to new platforms, fix bugs, *
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* and add new features. You are highly encouraged to send your changes *
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* to nmap-dev@insecure.org for possible incorporation into the main *
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* distribution. By sending these changes to Fyodor or one of the *
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* Insecure.Org development mailing lists, it is assumed that you are *
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* offering the Nmap Project (Insecure.Com LLC) the unlimited, *
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* non-exclusive right to reuse, modify, and relicense the code. Nmap *
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* will always be available Open Source, but this is important because the *
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* inability to relicense code has caused devastating problems for other *
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* Free Software projects (such as KDE and NASM). We also occasionally *
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* relicense the code to third parties as discussed above. If you wish to *
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* specify special license conditions of your contributions, just say so *
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* when you send them. *
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* *
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* This program is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* General Public License v2.0 for more details at *
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* http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file *
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* included with Nmap. *
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* *
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***************************************************************************/
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/* $Id$ */
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#include "NmapOps.h"
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#include "nbase.h"
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#include "payload.h"
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extern NmapOps o;
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/*
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These payloads are taken from nmap-service-probes.
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The nmap-service-probes probe strings also happen to be Python strings, so you
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can convert them to this C strings with this program:
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s = eval('"' + raw_input().replace('"', '\\"') + '"')
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print '"' + "".join(c.isalnum() and c or "\\x%02X" % ord(c) for c in s) + '"'
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These payloads are sent with every host discovery or port scan probe. Only
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include payloads that are unlikely to crash services, trip IDS alerts, or
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change state on the server.
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*/
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static const char payload_GenericLines[] = "\x0D\x0A\x0D\x0A";
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static const char payload_DNSStatusRequest[] =
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"\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00";
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static const char payload_RPCCheck[] =
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"\x72\xFE\x1D\x13\x00\x00\x00\x00\x00\x00\x00\x02\x00\x01\x86\xA0"
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"\x00\x01\x97\x7C\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00";
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static const char payload_NTPRequest[] =
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"\xE3\x00\x04\xFA\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\xC5\x4F\x23\x4B\x71\xB1\x52\xF3";
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static const char payload_NBTStat[] =
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"\x80\xF0\x00\x10\x00\x01\x00\x00\x00\x00\x00\x00"
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"\x20" "CKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\x00\x00\x21\x00\x01";
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static const char payload_SNMPv3GetRequest[] =
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"\x30\x3A\x02\x01\x03\x30\x0F\x02\x02\x4A\x69\x02\x03\x00\xFF\xE3"
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"\x04\x01\x04\x02\x01\x03\x04\x10\x30\x0E\x04\x00\x02\x01\x00\x02"
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"\x01\x00\x04\x00\x04\x00\x04\x00\x30\x12\x04\x00\x04\x00\xA0\x0C"
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"\x02\x02\x37\xF0\x02\x01\x00\x02\x01\x00\x30\x00";
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/* X Display Manager Control Protocol. Version 1, packet type Query (2), no
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authorization names. We expect a Willing or Unwilling packet in reply.
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http://cgit.freedesktop.org/xorg/doc/xorg-docs/plain/hardcopy/XDMCP/xdmcp.PS.gz */
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static const char payload_xdmcp[] = "\x00\x01\x00\x02\x00\x01\x00";
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/* Internet Key Exchange version 1, phase 1 Main Mode. We offer every
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combination of (DES, 3DES) and (MD5, SHA) in the hope that one of them will
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be acceptable. Because we use a fixed cookie, we set the association lifetime
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to 1 second to reduce the chance that repeated probes will look like
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retransmissions (and therefore not get a response). This payload comes from
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ike-scan --lifetime 1 --cookie 0011223344556677 --trans=5,2,1,2 --trans=5,1,1,2 --trans=1,2,1,2 --trans=1,1,1,2
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We expect another phase 1 message in response. This payload works better with
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a source port of 500 or a randomized initiator cookie. */
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static const char payload_ike[] =
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/* Initiator cookie 0x0011223344556677, responder cookie 0x0000000000000000. */
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"\x00\x11\x22\x33\x44\x55\x66\x77\x00\x00\x00\x00\x00\x00\x00\x00"
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/* Version 1, Main Mode, flags 0x00, message ID 0x00000000, length 192. */
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"\x01\x10\x02\x00\x00\x00\x00\x00\x00\x00\x00\xC0"
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/* Security Association payload, length 164, IPSEC, IDENTITY. */
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"\x00\x00\x00\xA4\x00\x00\x00\x01\x00\x00\x00\x01"
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/* Proposal 1, length 152, ISAKMP, 4 transforms. */
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"\x00\x00\x00\x98\x01\x01\x00\x04"
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/* Transform 1, 3DES-CBC, SHA, PSK, group 2. */
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"\x03\x00\x00\x24\x01\x01\x00\x00\x80\x01\x00\x05\x80\x02\x00\x02"
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"\x80\x03\x00\x01\x80\x04\x00\x02"
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"\x80\x0B\x00\x01\x00\x0C\x00\x04\x00\x00\x00\x01"
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/* Transform 2, 3DES-CBC, MD5, PSK, group 2. */
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"\x03\x00\x00\x24\x02\x01\x00\x00\x80\x01\x00\x05\x80\x02\x00\x01"
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"\x80\x03\x00\x01\x80\x04\x00\x02"
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"\x80\x0B\x00\x01\x00\x0C\x00\x04\x00\x00\x00\x01"
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/* Transform 3, DES-CBC, SHA, PSK, group 2. */
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"\x03\x00\x00\x24\x03\x01\x00\x00\x80\x01\x00\x01\x80\x02\x00\x02"
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"\x80\x03\x00\x01\x80\x04\x00\x02"
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"\x80\x0B\x00\x01\x00\x0C\x00\x04\x00\x00\x00\x01"
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/* Transform 4, DES-CBC, MD5, PSK, group 2. */
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"\x00\x00\x00\x24\x04\x01\x00\x00\x80\x01\x00\x01\x80\x02\x00\x01"
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"\x80\x03\x00\x01\x80\x04\x00\x02"
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"\x80\x0B\x00\x01\x00\x0C\x00\x04\x00\x00\x00\x01";
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/* Routing Information Protocol version 1. Special-case request for the entire
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routing table (address family 0, address 0.0.0.0, metric 16). RFC 1058,
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section 3.4.1. */
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static const char payload_rip[] =
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"\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x10";
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/* RADIUS Access-Request. This is a degenerate packet with no username or
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password; we expect an Access-Reject in response. The Identifier and Request
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Authenticator are both 0. It was generated by running
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echo 'User-Password = ""' | radclient <ip> auth ""
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and then manually stripping out the password.
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Section 2 of the RFC says "A request from a client for which the RADIUS
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server does not have a shared secret MUST be silently discarded." So this
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payload only works when the server is configured (or misconfigured) to know
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the scanning machine as a client. */
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static const char payload_radius[] =
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"\x01\x00\x00\x14"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
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/* NFS version 2, RFC 1831. XID 0x00000000, program 100003 (NFS), procedure
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NFSPROC_NULL (does nothing, see section 2.2.1), null authentication (see
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section 9.1). */
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static const char payload_nfs[] =
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x01\x86\xA3"
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"\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00";
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/* DNS Service Discovery (DNS-SD) service query, as used in Zeroconf.
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Transaction ID 0x0000, flags 0x0000, 1 question: PTR query for
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_services._dns-sd._udp.local. If the remote host supports DNS-SD it will send
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back a list of all its services. This is the same as a packet capture of
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dns-sd -B _services._dns-sd._udp .
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See section 9 of
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http://files.dns-sd.org/draft-cheshire-dnsext-dns-sd.txt. */
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static const char payload_dns_sd[] =
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"\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00"
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"\x09_services\x07_dns-sd\x04_udp\x05local\x00\x00\x0C\x00\x01";
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/*
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This one trips a Snort rule with SID 2049 ("MS-SQL ping attempt").
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static const char payload_Sqlping[] = "\x02";
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*/
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static const char payload_null[] = "";
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/* Get a payload appropriate for the given UDP port. If --data-length was used,
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returns the global random payload. Otherwise, for certain selected ports a
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payload is returned, and for others a zero-length payload is returned. The
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length is returned through the length pointer. */
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const char *get_udp_payload(u16 dport, size_t *length) {
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if (o.extra_payload_length > 0) {
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*length = o.extra_payload_length;
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return o.extra_payload;
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}
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else
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return udp_port2payload(dport, length);
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}
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/* Get a payload appropriate for the given UDP port. For certain selected
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ports a payload is returned, and for others a zero-length payload is
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returned. The length is returned through the length pointer. */
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const char *udp_port2payload(u16 dport, size_t *length){
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const char *payload;
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#define SET_PAYLOAD(p) do { *length = sizeof(p) - 1; payload = (p); } while (0)
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switch (dport) {
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case 7:
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SET_PAYLOAD(payload_GenericLines);
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break;
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case 53:
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SET_PAYLOAD(payload_DNSStatusRequest);
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break;
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case 111:
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SET_PAYLOAD(payload_RPCCheck);
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break;
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case 123:
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SET_PAYLOAD(payload_NTPRequest);
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break;
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case 137:
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SET_PAYLOAD(payload_NBTStat);
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break;
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case 161:
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SET_PAYLOAD(payload_SNMPv3GetRequest);
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break;
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case 177:
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SET_PAYLOAD(payload_xdmcp);
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break;
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case 500:
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SET_PAYLOAD(payload_ike);
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break;
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case 520:
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SET_PAYLOAD(payload_rip);
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break;
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/*
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case 1434:
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SET_PAYLOAD(payload_Sqlping);
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break;
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*/
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/* RFC 2865: "The early deployment of RADIUS was done using UDP port number
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1645, which conflicts with the "datametrics" service. The officially
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assigned port number for RADIUS is 1812. */
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case 1645:
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case 1812:
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SET_PAYLOAD(payload_radius);
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break;
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case 2049:
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SET_PAYLOAD(payload_nfs);
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break;
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case 5353:
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SET_PAYLOAD(payload_dns_sd);
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break;
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default:
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SET_PAYLOAD(payload_null);
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break;
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}
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return payload;
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}
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