add support for multiple ports in network template

[tarunKoyalwar]

Proposed Changes

• While writing network templates common use case is to check for multiple open ports

Example:
while default port of ssh service is 22 . it is also commonly configured to use port 2222

• this pr adds support for multiple comma seperated values in port field and does the following
  • if more than one port is specified it probes to check if those ports are open on that targets
  • template is then executed on those open ports (can be one or more )
• this does not remove / change any existing functionality introduced in port field PR and only extends its support for multiple ports
• closes allow multiple ports(csv) in network templates #4400

[tarunKoyalwar]

Example Template

id: openssh-detect

info:
  name: OpenSSH Service - Detect
  author: r3dg33k,daffainfo,iamthefrogy
  severity: info
  description: |
    OpenSSH service was detected.
  reference:
    - http://www.openwall.com/lists/oss-security/2016/08/01/2
    - http://www.openwall.com/lists/oss-security/2018/08/15/5
    - http://seclists.org/fulldisclosure/2016/Jul/51
    - https://nvd.nist.gov/vuln/detail/CVE-2016-6210
    - https://nvd.nist.gov/vuln/detail/CVE-2018-15473
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
    cwe-id: CWE-200
  metadata:
    max-request: 1
  tags: seclists,network,ssh,openssh,detect

tcp:
  - host:
      - "{{Hostname}}"
    port: 22,2222

    matchers:
      - type: regex
        regex:
          - '(?i)OpenSSH'

    extractors:
      - type: regex
        regex:
          - '(?i)SSH-(.*)-OpenSSH_[^\r]+'

$  ./nuclei -l targets.txt -t ./openssh-detect.yaml       

                     __     _
   ____  __  _______/ /__  (_)
  / __ \/ / / / ___/ / _ \/ /
 / / / / /_/ / /__/ /  __/ /
/_/ /_/\__,_/\___/_/\___/_/   v3.1.0-dev

		projectdiscovery.io

[INF] Current nuclei version: v3.1.0-dev (development)
[INF] Current nuclei-templates version: v9.6.9 (latest)
[WRN] Scan results upload to cloud is disabled.
[INF] New templates added in latest release: 73
[INF] Templates loaded for current scan: 1
[WRN] Executing 1 unsigned templates. Use with caution.
[INF] Targets loaded for current scan: 4
[openssh-detect] [tcp] [info] xx.xx.xx.xx:2222 [SSH-2.0-OpenSSH_9.3 FreeBSD-openssh-portable-9.3.p2_1,1]
[openssh-detect] [tcp] [info] scanme.sh:22 [SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.9]
[openssh-detect] [tcp] [info] xx.xx.xx.xx:2222 [SSH-2.0-OpenSSH_7.9 FreeBSD-openssh-portable-7.9.p1_1,1]
[openssh-detect] [tcp] [info] xx.xx.xx.xx:2222 [SSH-2.0-OpenSSH_8.9 FreeBSD-openssh-portable-8.9.p1_3,1]

[dogancanbakir]

I got the following err with the ports port: 22,99999—besides, LGTM.

$ go run . -u scanme.sh -t ./test.yaml

                     __     _
   ____  __  _______/ /__  (_)
  / __ \/ / / / ___/ / _ \/ /
 / / / / /_/ / /__/ /  __/ /
/_/ /_/\__,_/\___/_/\___/_/   v3.1.0-dev

                projectdiscovery.io

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x1a62db0]

goroutine 1 [running]:
github.com/projectdiscovery/nuclei/v3/pkg/protocols/network.(*Request).Compile(0x4000c8eb40, 0x4000cace00)
        /workspaces/nuclei/pkg/protocols/network/network.go:189 +0x470
github.com/projectdiscovery/nuclei/v3/pkg/tmplexec.(*TemplateExecuter).Compile(0x40009c0200)
        /workspaces/nuclei/pkg/tmplexec/exec.go:69 +0x88
github.com/projectdiscovery/nuclei/v3/pkg/templates.parseTemplate({_, _, _}, {{0x0, 0x0}, {0x40004da600, 0x27}, {{0x0, 0x0}, {{0x0, ...}}, ...}, ...})
        /workspaces/nuclei/pkg/templates/compile.go:371 +0x598
github.com/projectdiscovery/nuclei/v3/pkg/templates.ParseTemplateFromReader({_, _}, {_, _}, {{0x0, 0x0}, {0x40004da600, 0x27}, {{0x0, 0x0}, ...}, ...})
        /workspaces/nuclei/pkg/templates/compile.go:260 +0x408
github.com/projectdiscovery/nuclei/v3/pkg/templates.Parse({_, _}, {_, _}, {{0x0, 0x0}, {0x0, 0x0}, {{0x0, 0x0}, ...}, ...})
        /workspaces/nuclei/pkg/templates/compile.go:78 +0x2f4
github.com/projectdiscovery/nuclei/v3/pkg/catalog/loader.(*Store).LoadTemplatesWithTags(0x40009c4090, {0x4000178670?, 0x0?, 0x0?}, {0x0, 0x0, 0x0})
        /workspaces/nuclei/pkg/catalog/loader/loader.go:392 +0x2dc
github.com/projectdiscovery/nuclei/v3/pkg/catalog/loader.(*Store).LoadTemplates(...)
        /workspaces/nuclei/pkg/catalog/loader/loader.go:354
github.com/projectdiscovery/nuclei/v3/pkg/catalog/loader.(*Store).Load(0x40009c4090)
        /workspaces/nuclei/pkg/catalog/loader/loader.go:250 +0x38
github.com/projectdiscovery/nuclei/v3/internal/runner.(*Runner).RunEnumeration(0x40012dcdc0)
        /workspaces/nuclei/internal/runner/runner.go:440 +0xa70
main.main()
        /workspaces/nuclei/cmd/nuclei/main.go:149 +0x4d8
exit status 2

[dogancanbakir]

LGTM