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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
Source: https://code.google.com/p/google-security-research/issues/detail?id=648

The following crash due to a static out-of-bounds read can be observed in an ASAN build of Wireshark (current git master), by feeding a malformed file to tshark ("$ ./tshark -nVxr /path/to/file"):

--- cut ---
==7855==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000005676c18 at pc 0x000001ab09d2 bp 0x7ffc9ce376b0 sp 0x7ffc9ce376a8
READ of size 8 at 0x000005676c18 thread T0
    #0 0x1ab09d1 in dissect_ber_set wireshark/epan/dissectors/packet-ber.c:2588:64
    #1 0x198e7c7 in dissect_ansi_tcap_T_paramSet wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:189:12
    #2 0x1ab47f4 in dissect_ber_choice wireshark/epan/dissectors/packet-ber.c:2898:21
    #3 0x198e652 in dissect_ansi_tcap_T_parameter_03 wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:210:12
    #4 0x1aae8bc in dissect_ber_sequence wireshark/epan/dissectors/packet-ber.c:2400:17
    #5 0x198b2f7 in dissect_ansi_tcap_Reject wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:227:12
    #6 0x1ab47f4 in dissect_ber_choice wireshark/epan/dissectors/packet-ber.c:2898:21
    #7 0x198aee2 in dissect_ansi_tcap_ComponentPDU wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:256:12
    #8 0x1abba52 in dissect_ber_sq_of wireshark/epan/dissectors/packet-ber.c:3490:9
    #9 0x1abbe2f in dissect_ber_sequence_of wireshark/epan/dissectors/packet-ber.c:3521:12
    #10 0x198ae17 in dissect_ansi_tcap_SEQUENCE_OF_ComponentPDU wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:270:12
    #11 0x1a966a7 in dissect_ber_tagged_type wireshark/epan/dissectors/packet-ber.c:691:9
    #12 0x19898ac in dissect_ansi_tcap_ComponentSequence wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:280:12
    #13 0x1aae8bc in dissect_ber_sequence wireshark/epan/dissectors/packet-ber.c:2400:17
    #14 0x198e887 in dissect_ansi_tcap_TransactionPDU wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:145:12
    #15 0x1988ded in dissect_ansi_tcap_T_queryWithPerm wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:134:12
    #16 0x1ab47f4 in dissect_ber_choice wireshark/epan/dissectors/packet-ber.c:2898:21
    #17 0x1988b30 in dissect_ansi_tcap_PackageType wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:173:12
    #18 0x1988830 in dissect_ansi_tcap wireshark/epan/dissectors/../../asn1/ansi_tcap/packet-ansi_tcap-template.c:385:5
    #19 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #20 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #21 0xaefb1b in call_dissector_only wireshark/epan/packet.c:2662:8
    #22 0xae09f3 in call_dissector_with_data wireshark/epan/packet.c:2675:8
    #23 0xaefba8 in call_dissector wireshark/epan/packet.c:2692:9
    #24 0x16c3f24 in dissect_tcap wireshark/epan/dissectors/../../asn1/tcap/packet-tcap-template.c:2004:14
    #25 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #26 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #27 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9
    #28 0x11d6632 in dissect_sccp_data_param wireshark/epan/dissectors/packet-sccp.c:2346:31
    #29 0x11d47a1 in dissect_sccp_parameter wireshark/epan/dissectors/packet-sccp.c:2559:5
    #30 0x11d5169 in dissect_sccp_variable_parameter wireshark/epan/dissectors/packet-sccp.c:2640:3
    #31 0x11cec1e in dissect_sccp_message wireshark/epan/dissectors/packet-sccp.c:2951:5
    #32 0x11cc3f9 in dissect_sccp wireshark/epan/dissectors/packet-sccp.c:3402:3
    #33 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #34 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #35 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9
    #36 0xae5a38 in dissector_try_uint wireshark/epan/packet.c:1174:9
    #37 0xefae51 in dissect_mtp3_payload wireshark/epan/dissectors/packet-mtp3.c:647:8
    #38 0xef8466 in dissect_mtp3 wireshark/epan/dissectors/packet-mtp3.c:767:3
    #39 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #40 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #41 0xaefb1b in call_dissector_only wireshark/epan/packet.c:2662:8
    #42 0xae09f3 in call_dissector_with_data wireshark/epan/packet.c:2675:8
    #43 0xaefba8 in call_dissector wireshark/epan/packet.c:2692:9
    #44 0x2da26b4 in dissect_protocol_data_1_parameter wireshark/epan/dissectors/packet-m2ua.c:507:3
    #45 0x2da11b2 in dissect_parameter wireshark/epan/dissectors/packet-m2ua.c:952:5
    #46 0x2da006b in dissect_parameters wireshark/epan/dissectors/packet-m2ua.c:1026:5
    #47 0x2d9fb58 in dissect_message wireshark/epan/dissectors/packet-m2ua.c:1041:3
    #48 0x2d9fa96 in dissect_m2ua wireshark/epan/dissectors/packet-m2ua.c:1058:3
    #49 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #50 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #51 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9
    #52 0x39012a2 in dissect_payload wireshark/epan/dissectors/packet-sctp.c:2517:9
    #53 0x38f7d37 in dissect_data_chunk wireshark/epan/dissectors/packet-sctp.c:3443:16
    #54 0x38f0ac8 in dissect_sctp_chunk wireshark/epan/dissectors/packet-sctp.c:4360:14
    #55 0x38ed8e6 in dissect_sctp_chunks wireshark/epan/dissectors/packet-sctp.c:4515:9
    #56 0x38eb79f in dissect_sctp_packet wireshark/epan/dissectors/packet-sctp.c:4678:3
    #57 0x38e95d5 in dissect_sctp wireshark/epan/dissectors/packet-sctp.c:4732:3
    #58 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #59 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #60 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9
    #61 0x29c5318 in ip_try_dissect wireshark/epan/dissectors/packet-ip.c:2001:7
    #62 0x29d0521 in dissect_ip_v4 wireshark/epan/dissectors/packet-ip.c:2485:10
    #63 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #64 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #65 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9
    #66 0xae5a38 in dissector_try_uint wireshark/epan/packet.c:1174:9
    #67 0x24e0824 in dissect_ethertype wireshark/epan/dissectors/packet-ethertype.c:307:21
    #68 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #69 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #70 0xaefb1b in call_dissector_only wireshark/epan/packet.c:2662:8
    #71 0xae09f3 in call_dissector_with_data wireshark/epan/packet.c:2675:8
    #72 0x24dc752 in dissect_eth_common wireshark/epan/dissectors/packet-eth.c:545:5
    #73 0x24d499a in dissect_eth_maybefcs wireshark/epan/dissectors/packet-eth.c:828:5
    #74 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #75 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #76 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9
    #77 0x25dca12 in dissect_frame wireshark/epan/dissectors/packet-frame.c:500:11
    #78 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8
    #79 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9
    #80 0xaefb1b in call_dissector_only wireshark/epan/packet.c:2662:8
    #81 0xae09f3 in call_dissector_with_data wireshark/epan/packet.c:2675:8
    #82 0xadffde in dissect_record wireshark/epan/packet.c:501:3
    #83 0xab6d0d in epan_dissect_run_with_taps wireshark/epan/epan.c:373:2
    #84 0x53c91b in process_packet wireshark/tshark.c:3728:5
    #85 0x535d90 in load_cap_file wireshark/tshark.c:3484:11
    #86 0x52c1df in main wireshark/tshark.c:2197:13

0x000005676c18 is located 8 bytes to the left of global variable '<string literal>' defined in '../../asn1/ansi_tcap/ansi_tcap.cnf:131:43' (0x5676c20) of size 15
  '<string literal>' is ascii string 'queryWithPerm '
0x000005676c18 is located 24 bytes to the right of global variable 'T_paramSet_set' defined in '../../asn1/ansi_tcap/ansi_tcap.cnf:183:29' (0x5676be0) of size 32
SUMMARY: AddressSanitizer: global-buffer-overflow wireshark/epan/dissectors/packet-ber.c:2588:64 in dissect_ber_set
Shadow bytes around the buggy address:
  0x000080ac6d30: 00 00 00 00 f9 f9 f9 f9 00 00 00 00 00 00 00 00
  0x000080ac6d40: 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 00 00 00 00
  0x000080ac6d50: 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9
  0x000080ac6d60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f9
  0x000080ac6d70: f9 f9 f9 f9 00 00 00 00 f9 f9 f9 f9 00 00 00 00
=>0x000080ac6d80: f9 f9 f9[f9]00 07 f9 f9 f9 f9 f9 f9 00 00 00 00
  0x000080ac6d90: 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9
  0x000080ac6da0: 00 00 02 f9 f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9
  0x000080ac6db0: 00 00 06 f9 f9 f9 f9 f9 00 00 00 01 f9 f9 f9 f9
  0x000080ac6dc0: 07 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
  0x000080ac6dd0: 00 00 00 00 00 00 00 00 f9 f9 f9 f9 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Heap right redzone:      fb
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack partial redzone:   f4
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==7855==ABORTING
--- cut ---

The crash was reported at https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11796. Attached are three files which trigger the crash.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39484.zip