bash_portscan_banners
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Table of Contents
~~TOC~~
Pure bash TCP portscan and bannergrabber
Sequential portscan
#!/bin/bash IP=1.2.3.4 for port in {1..1023} do echo -n "${IP} port ${port} - " timeout 1s bash -c "</dev/tcp/${IP}/${port}" 2>/dev/null && echo open || echo closed done
Parallel portscan
Test 10 ports in parallel.
#!/bin/bash PAR=10 IP=127.0.0.1 ( for port in {1..1000} do ((i=i%PAR)); ((i++==0)) && wait timeout 1s bash -c "</dev/tcp/${IP}/${port}" 2>/dev/null && echo ${port} open || echo ${port} closed & done )
Bannergrab
#!/bin/bash IP=1.2.3.4 for i in {1..1000} do echo -n "${IP} port ${i} - " timeout 1s bash -c "head -1 </dev/tcp/${IP}/${i}" 2>/dev/null || echo closed done
bash_portscan_banners.1504161454.txt.gz · Last modified: 2017/08/31 06:37 by admin