40 lines
1.3 KiB
Bash
Executable File
40 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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# NSEC walk script for DNSSEC - developed by acidvegas (https://git.acid.vegas/nsecx)
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# nsec
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# This script will walk through a DNS zone using NSEC records.
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# TLD to start the walk from
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tld="$1"
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# Initialize the top-level domain (TLD) to start the walk from
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current_domain="$tld"
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#dns_servers=$(curl -s https://public-dns.info/nameservers.txt | grep -Eo '([0-9]{1,3}\.){3}[0-9]{1,3}')
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# Loop to walk through the zone using NSEC records
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while true; do
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# Select a random DNS server from the list
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#nameserver=$(shuf -n 1 -e $dns_servers)
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# Perform the dig command to get the NSEC record for the current domain
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#output="$(dig @${nameserver} +trace $current_domain NSEC)"
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output="$(dig +trace $current_domain NSEC)"
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# Use grep to find the line with the current domain and then use awk to extract the next domain
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next_domain=$(echo "$output" | grep -F "$current_domain" | awk '$4 == "NSEC" { print $5 }')
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# Check if we got a valid next domain
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if [ -z "$next_domain" ] || [ "$next_domain" = "$current_domain" ]; then
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echo "$output"
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echo "End of zone reached or no more domains found."
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break
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fi
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# Print the next domain
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echo "Next domain: $next_domain"
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# Update the current domain to the next one for the following iteration
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current_domain=$next_domain
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done
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