{"id":9185,"date":"2020-02-19T17:58:37","date_gmt":"2020-02-19T12:28:37","guid":{"rendered":"http:\/\/kalilinuxtutorials.com\/?p=9185"},"modified":"2020-02-19T17:58:37","modified_gmt":"2020-02-19T12:28:37","slug":"fuzzowski","status":"publish","type":"post","link":"https:\/\/kalilinuxtutorials.com\/fuzzowski\/","title":{"rendered":"Fuzzowski : The Network Protocol Fuzzer"},"content":{"rendered":"\n<p>The idea is to be the Network Protocol Fuzzer that we will&nbsp;<strong>want<\/strong>&nbsp;to use.<\/p>\n\n\n\n<p>The aim of this tool is to assist during the whole process of fuzzing a network protocol, allowing to define the communications, helping to identify the &#8220;suspects&#8221; of crashing a service, and much more<\/p>\n\n\n\n<p><a href=\"https:\/\/github.com\/nccgroup\/fuzzowski#last-changes\"><\/a><strong>Last Changes<\/strong><br>[16\/12\/2019]<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Data Generation modules<\/strong>&nbsp;fully recoded (Primitives, Blocks, Requests)<ul><li>Improved Strings fuzzing libraries, allowing also for custom lists, files and callback commands<\/li><li><strong>Variable<\/strong>&nbsp;data type, which takes a variable set by the session, the user or a Response<\/li><\/ul><\/li><li><strong>Session<\/strong>&nbsp;fully recoded. Now it is based on&nbsp;<strong>TestCase<\/strong>s, which contains all the information needed to perform the request, check the response, store data such as errors received, etc.<\/li><li><strong>Responses<\/strong>&nbsp;added. Now you can define responses with s_response(), This allows to check the response from the server, set variables and even perform additional tests on the response to check if something is wrong<\/li><li><strong>Monitors<\/strong>&nbsp;now automatically mark TestCases as suspect if they fail<\/li><li>Added the&nbsp;<strong>IPP (Internet Printing Protocol)<\/strong>&nbsp;Fuzzer that we used to find several vulnerabilities in different printer brands during our printers research project (<a href=\"https:\/\/www.youtube.com\/watch?v=3X-ZnlyGuWc&amp;t=7s\">https:\/\/www.youtube.com\/watch?v=3X-ZnlyGuWc&amp;t=7s<\/a>)<\/li><\/ul>\n\n\n\n<p class=\"has-text-align-center\"><strong>Also Read &#8211; <a href=\"https:\/\/kalilinuxtutorials.com\/ctftool\/\">CTFTool : Interactive CTF Exploration Tool<\/a><\/strong><\/p>\n\n\n\n<p class=\"has-background has-text-align-center has-light-green-cyan-background-color\"><strong><a href=\"https:\/\/github.com\/nccgroup\/fuzzowski#features\"><\/a>Features<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Based on Sulley Fuzzer for data generation [<a href=\"https:\/\/github.com\/OpenRCE\/sulley\">https:\/\/github.com\/OpenRCE\/sulley<\/a>]<\/li><li>Actually, forked BooFuzz (which is a fork of Sulley) [<a href=\"https:\/\/github.com\/jtpereyda\/boofuzz\">https:\/\/github.com\/jtpereyda\/boofuzz<\/a>&nbsp;]<\/li><li>Python3<\/li><li>Not random (finite number of possibilities)<\/li><li>Requires to \u201ccreate the packets\u201d with types (spike fuzzer style)<\/li><li>Also allows to create &#8220;&#8221;Raw&#8221;&#8221; packets from parameters, with injection points (quite useful for fuzzing simple protocols)<\/li><li>Has a nice console to pause, review and retest any suspect (prompt_toolkit ftw)<\/li><li>Allows to skip parameters that cause errors, automatically or with the console<\/li><li>Nice print formats for suspect packets (to know exactly what was fuzzed)<\/li><li>It saves PoCs as python scripts for you when you mark a test case as a crash<\/li><li>Monitor modules to gather information of the target, detecting odd behaviours and marking suspects<\/li><li>Restarter modules that will restart the target if the connection is lost (e.g. powering off and on an smart plug)<\/li><\/ul>\n\n\n\n<p class=\"has-background has-text-align-center has-light-green-cyan-background-color\"><strong><a href=\"https:\/\/github.com\/nccgroup\/fuzzowski#protocols-implemented\"><\/a>Protocols implemented<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>LPD (Line Printing Daemon)<\/strong>: Fully implemented<\/li><li><strong>IPP (Internet Printing Protocol)<\/strong>: Partially implemented<\/li><li><strong>BACnet (Building Automation and Control networks Protocol)<\/strong>: Partially implemented<\/li><li><strong>Modbus (ICS communication protocol)<\/strong>: Partially implemented<\/li><\/ul>\n\n\n\n<p class=\"has-background has-text-align-center has-light-green-cyan-background-color\"><strong><a href=\"https:\/\/github.com\/nccgroup\/fuzzowski#installation\"><\/a>Installation<\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-background has-vivid-green-cyan-color has-very-dark-gray-background-color\"><strong>virtualenv venv -p python3<br> source venv\/bin\/activate<br> pip install -r requirements.txt<\/strong><\/p>\n\n\n\n<p class=\"has-background has-text-align-center has-light-green-cyan-background-color\"><strong>Help<\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-background has-vivid-green-cyan-color has-very-dark-gray-background-color\">usage: python -m fuzzowski [-h] [-p {tcp,udp,ssl}] [-b BIND] [-st SEND_TIMEOUT]<br>                     [-rt RECV_TIMEOUT] [&#8211;sleep-time SLEEP_TIME] [-nc] [-tn]<br>                     [-nr] [-nrf] [-cr]<br>                     [&#8211;threshold-request CRASH_THRESHOLD_REQUEST]<br>                     [&#8211;threshold-element CRASH_THRESHOLD_ELEMENT]<br>                     [&#8211;ignore-aborted] [&#8211;ignore-reset] [&#8211;error-fuzz-issues]<br>                     [-c CALLBACK | &#8211;file FILENAME] -f<br>                     {cops,dhcp,ipp,lpd,netconf,telnet_cli,tftp,raw}<br>                     [-r FUZZ_REQUESTS [FUZZ_REQUESTS \u2026]]<br>                     [&#8211;restart module_name [args \u2026]]<br>                     [&#8211;restart-sleep RESTART_SLEEP_TIME]<br>                     [&#8211;monitors {IPPMon} [{IPPMon} \u2026]] [&#8211;path PATH]<br>                     [&#8211;document_url DOCUMENT_URL]<br>                     host port<br>positional arguments:<br>   host                  Destination Host<br>   port                  Destination Port<br>optional arguments:<br>   -h, &#8211;help            show this help message and exit<br>Connection Options:<br>   -p {tcp,udp,ssl}, &#8211;protocol {tcp,udp,ssl}<br>                         Protocol (   Default tcp)<br>   -b BIND, &#8211;bind BIND  Bind to port<br>   -st SEND_TIMEOUT, &#8211;send_timeout SEND_TIMEOUT<br>                         Set send() timeout (Default 5s)<br>   -rt RECV_TIMEOUT, &#8211;recv_timeout RECV_TIMEOUT<br>                         Set recv() timeout (Default 5s)<br>   &#8211;sleep-time SLEEP_TIME<br>                         Sleep time between each test (Default 0)<br>   -nc, &#8211;new-conns      Open a new connection after each packet of the same test<br>   -tn, &#8211;transmit-next-node<br>                         Transmit the next node in the graph of the fuzzed node<br>RECV() Options:<br>   -nr, &#8211;no-recv        Do not recv() in the socket after each send<br>   -nrf, &#8211;no-recv-fuzz  Do not recv() in the socket after sending a fuzzed request<br>   -cr, &#8211;check-recv     Check that data has been received in recv()<br>Crashes Options:<br>   &#8211;threshold-request CRASH_THRESHOLD_REQUEST<br>                         Set the number of allowed crashes in a Request before skippi   ng it (Default 9999)<br>   &#8211;threshold-element CRASH_THRESHOLD_ELEMENT<br>                         Set the number of allowed crashes in a Primitive before skipping it (Default 3)<br>   &#8211;ignore-aborted      Ignore ECONNABORTED errors<br>   &#8211;ignore-reset        Ignore ECONNRESET errors<br>   &#8211;error-fuzz-issues   Log as error when there is any connection issue in the fuzzed node<br>Fuzz Options:<br>   -c CALLBACK, &#8211;callback CALLBACK<br>                         Set a callback address to fuzz with callback generator instead of normal mutations<br>   &#8211;file FILENAME       Use contents of a file for fuzz mutations<br>Fuzzers:<br>   -f {cops,dhcp,ipp,lpd,netconf,telnet_cli,tftp,raw}, &#8211;fuzz {cops,dhcp,ipp,lpd,netconf,telnet_cli,tftp,raw}<br>                         Available Protocols<br>   -r FUZZ_REQUESTS [FUZZ_REQUESTS \u2026], &#8211;requests FUZZ_REQUESTS [FUZZ_REQUESTS \u2026]<br>                            Requests of the protocol to fuzz, default All<br>                           dhcp: [opt82]<br>                           ipp: [http_headers, get_printer_attribs, print_uri_message, send_uri, get_jobs, get_job_attribs]<br>                           lpd: [long_queue, short_queue, ctrl_file, data_file, remove_job]<br>                           telnet_cli: [commands]<br>                           tftp: [read]<br>                           raw: [&#8216;\\x01string\\n&#8217; &#8216;\\x02request2\\x00&#8217; \u2026]<br>Restart options:<br>   &#8211;restart module_name [args \u2026]<br>                         Restarter Modules:<br>                           run: &#8216; [ \u2026]&#8217; (Pass command and arguments within quotes, as only one argument)<br>                           smartplug: It will turn off and on the Smart Plug<br>                           teckin: <br>   &#8211;restart-sleep RESTART_SLEEP_TIME<br>                         Set sleep seconds after a crash bef   ore continue (Default 5)<br>Monitor options:<br>   &#8211;monitors {IPPMon} [{IPPMon} \u2026], -m {IPPMon} [{IPPMon} \u2026]<br>                         Monitor Modules:<br>                           IPPMon: Sends a get-attributes IPP message to the target<br>Other Options:<br>   &#8211;path PATH           Set path when fuzzing HTTP based protocols (Default \/)<br>   &#8211;document_url DOCUMENT_URL<br>                         Set Document URL for print_uri<\/p>\n\n\n\n<p class=\"has-background has-text-align-center has-light-green-cyan-background-color\"><strong>Examples<\/strong><\/p>\n\n\n\n<p>Fuzz the get_printer_attribs IPP operation with default options:<\/p>\n\n\n\n<p class=\"has-text-color has-background has-vivid-green-cyan-color has-very-dark-gray-background-color\"><strong>python -m fuzzowski printer1 631 -f ipp -r get_printer_attribs &#8211;restart smartplug<\/strong><\/p>\n\n\n\n<a href=\"https:\/\/asciinema.org\/a\/0RMDMrJWiFo4RoRwAjx61BXDY\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" src=\"https:\/\/asciinema.org\/a\/0RMDMrJWiFo4RoRwAjx61BXDY.svg\"><\/a>\n\n\n\n<p>Use the raw feature of IPP to fuzz the finger protocol:<\/p>\n\n\n\n<p class=\"has-text-color has-background has-vivid-green-cyan-color has-very-dark-gray-background-color\"><strong>python -m fuzzowski printer 79 -f raw -r &#8216;{{root}}\\n&#8217;<\/strong><\/p>\n\n\n\n<a href=\"https:\/\/asciinema.org\/a\/Pch0JbkNK97dgrCUMK8iIfJv5\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" src=\"https:\/\/asciinema.org\/a\/Pch0JbkNK97dgrCUMK8iIfJv5.svg\"><\/a>\n\n\n\n<p>Use the raw feature of IPP to fuzz the finger protocol, but instead of using the predefined mutations, use a file:<\/p>\n\n\n\n<p class=\"has-text-color has-background has-vivid-green-cyan-color has-very-dark-gray-background-color\"><strong>python -m fuzzowski printer 79 -f raw -r &#8216;{{root}}\\n&#8217; &#8211;file &#8216;path\/to\/my\/fuzzlist&#8217;<\/strong><\/p>\n\n\n\n<div class=\"wp-block-button aligncenter is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link has-background has-vivid-cyan-blue-background-color\" href=\"https:\/\/github.com\/nccgroup\/fuzzowski\"><strong>Download<\/strong><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The idea is to be the Network Protocol Fuzzer that we will&nbsp;want&nbsp;to use. The aim of this tool is to assist during the whole process of fuzzing a network protocol, allowing to define the communications, helping to identify the &#8220;suspects&#8221; of crashing a service, and much more Last Changes[16\/12\/2019] Data Generation modules&nbsp;fully recoded (Primitives, Blocks, [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":16114,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/asciinema.org\/a\/0RMDMrJWiFo4RoRwAjx61BXDY","fifu_image_alt":"Fuzzowski : The Network Protocol Fuzzer","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[28],"tags":[1278,1283],"class_list":["post-9185","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kali","tag-fuzzer","tag-fuzzowski"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - 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