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function reverseIp6 {
    echo "$1" | awk -F: 'BEGIN {OFS=""; }{addCount = 9 - NF; for(i=1; i<=NF;i++){if(length($i) == 0){ for(j=1;j<=addCount;j++){$i = ($i "0000");} } else { $i = substr(("0000" $i), length($i)+5-4);}}; print}' | rev | sed -e "s/./&./g"
}


$(reverseIp6 "2001:db8:85a3::8a2e:370:7334")"ip6.arpa."
#Result: 4.3.3.7.0.7.3.0.e.2.a.8.0.0.0.0.0.0.0.0.3.a.5.8.8.b.d.0.1.0.0.2.ip6.arpa.

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UPDATE:

2023/12/18: This script has been improved and moved to the following repository:

https://github.com/shinsenter/docker-squash

---

Make your Docker images smaller by reducing the number of layers

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#!/bin/bash
#
# ex: ./zgrab.sh www.contoso.com 443

echo $1 | zgrab2 http --retry-https --port $2 | awk '{first=substr($0,1,1);gsub(/./,"{\"port\":'"$2"',",first);end=substr($0,2);print first end}'

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Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

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Penetrating Testing/Assessment Workflow & other fun infosec stuff

https://github.com/jivoi/pentest

My feeble attempt to organize (in a somewhat logical fashion) the vast amount of information, tools, resources, tip and tricks surrounding penetration testing, vulnerability assessment, and information security as a whole*

• Reconnaissance
  • Passive/Semi-Passive
    • Tools
• Discover - https://github.com/leebaird/discover

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OWASP Top Ten https://owasp.org/www-project-top-ten/
The CWE Top 25
https://www.sans.org/top25-software-errors/
2022 CWE Top 25 Most Dangerous Software Weaknesses 
https://cwe.mitre.org/top25/archive/2022/2022_cwe_top25.html
OSSTMM 3 – The Open Source Security Testing Methodology Manual
https://www.isecom.org/OSSTMM.3.pdf
OWASP Web Security Testing Guide
https://owasp.org/www-project-web-security-testing-guide/

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nmap --top-ports <#ports> -v -oG - localhost

Top 100:

7,9,13,21-23,25-26,37,53,79-81,88,106,110-111,113,119,135,139,143-144,179,199,389,427,443-445,465,513-515,543-544,548,554,587,631,646,873,990,993,995,1025-1029,1110,1433,1720,1723,1755,1900,2000-2001,2049,2121,2717,3000,3128,3306,3389,3986,4899,5000,5009,5051,5060,5101,5190,5357,5432,5631,5666,5800,5900,6000-6001,6646,7070,8000,8008-8009,8080-8081,8443,8888,9100,9999-10000,32768,49152-49157

Top 1000:

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# Elasticsearch Cheatsheet - an overview of commonly used Elasticsearch API commands

# cat paths
/_cat/allocation
/_cat/shards
/_cat/shards/{index}
/_cat/master
/_cat/nodes
/_cat/indices
/_cat/indices/{index}

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# -*- coding: utf-8 -*-
from bs4 import BeautifulSoup
import sys
import urllib


def _init():
    if len(sys.argv) == 1:
        print "usage: lastbookmark.py user_name"
        sys.exit(1)