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Mohan Balasundaram tuxfight3r

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tuxfight3r / 01.bash_shortcuts_v2.md
Last active March 14, 2025 22:54
Bash keyboard shortcuts

Bash Shortcuts

visual cheetsheet

Moving

command description
ctrl + a Goto BEGINNING of command line
@tuxfight3r
tuxfight3r / tcp_flags.txt
Last active March 6, 2025 10:18
tcpdump - reading tcp flags
##TCP FLAGS##
Unskilled Attackers Pester Real Security Folks
==============================================
TCPDUMP FLAGS
Unskilled = URG = (Not Displayed in Flag Field, Displayed elsewhere)
Attackers = ACK = (Not Displayed in Flag Field, Displayed elsewhere)
Pester = PSH = [P] (Push Data)
Real = RST = [R] (Reset Connection)
Security = SYN = [S] (Start Connection)
@tuxfight3r
tuxfight3r / s3_upload.sh
Last active March 4, 2025 14:02
AWS - Upload files to S3 via curl
#!/bin/bash -x
#Date: 21/7/2017
#Author: Mohan
#Purpose: To upload files to AWS S3 via Curl
#Uploads file at the top level folder by default
#S3 parameters
S3KEY="XXXXXXXXXXX"
S3SECRET="XXXXXXXXXXXXXXXX"
@tuxfight3r
tuxfight3r / ssh-keygen
Last active February 27, 2025 17:34
ssh key / fingerprint tricks
#Read multiple keys from an authorized_keys file and print the finger print
[root@server01 .ssh]# while read line; do ssh-keygen -l -f /dev/stdin <<< $line; done < authorized_keys
2048 87:7a:4d:70:d2:10:a4:4b:b7:e1:2b:7c:77:92:25:04 /dev/stdin (RSA)
2048 7d:f0:89:94:00:09:bc:70:46:59:8d:9a:70:3b:ac:70 /dev/stdin (RSA)
2048 61:63:ee:0d:f6:d2:d8:d6:ae:37:0c:35:ae:da:51:6a /dev/stdin (RSA)
#read a key from authorized key file
[root@server01 .ssh]# ssh-keygen -l -f authorized_keys
2048 87:7a:4d:70:d2:10:a4:4b:b7:e1:2b:7c:77:92:25:04 authorized_keys (RSA)
@tuxfight3r
tuxfight3r / vim-shortcuts.md
Last active February 14, 2025 08:24
VIM SHORTCUTS

VIM KEYBOARD SHORTCUTS

MOVEMENT

h        -   Move left
j        -   Move down
k        -   Move up
l        -   Move right
$        -   Move to end of line
0        -   Move to beginning of line (including whitespace)
@tuxfight3r
tuxfight3r / slapd
Last active January 27, 2025 03:58
openldap proxy to AD with TLS
#file /etc/sysconfig/slapd
# OpenLDAP server configuration
# see 'man slapd' for additional information
# Where the server will run (-h option)
# - ldapi:/// is required for on-the-fly configuration using client tools
# (use SASL with EXTERNAL mechanism for authentication)
# - default: ldapi:/// ldap:///
# - example: ldapi:/// ldap://127.0.0.1/ ldap://10.0.0.1:1389/ ldaps:///
SLAPD_URLS="ldap:/// ldaps:///"
@tuxfight3r
tuxfight3r / socat-forward-tcp.sh
Created April 18, 2019 14:15 — forked from drmalex07/socat-forward-tcp4-to-tcp6.sh
Tunnel TCP traffic via socat. #socat
#!/bin/bash
PUBLIC_IP4_IFACE=eth2
LISTEN_IFACE=${PUBLIC_IP4_IFACE}
listen_address=$(ip -f inet addr show dev ${LISTEN_IFACE} | grep -Po 'inet \K[\d.]+')
listen_port=${1}
target_host=${2}
target_port=${3}
@tuxfight3r
tuxfight3r / jenkins-decrypt.groovy
Created September 23, 2015 11:36
Decrypting Jenkins Password
#To Decrypt Jenkins Password from credentials.xml
#<username>jenkins</username>
#<passphrase>your-sercret-hash-S0SKVKUuFfUfrY3UhhUC3J</passphrase>
#go to the jenkins url
http://jenkins-host/script
#In the console paste the script
hashed_pw='your-sercret-hash-S0SKVKUuFfUfrY3UhhUC3J'
@tuxfight3r
tuxfight3r / .bash_profile
Last active December 16, 2024 08:01
bash history log all commands to syslog
#log all your bash command to syslog
function log2syslog
{
declare COMMAND
COMMAND=$(fc -ln -0)
logger -p local1.notice -t bash -i -- "${USER}:${COMMAND}"
}
trap log2syslog DEBUG
#moredetails can be found here
@tuxfight3r
tuxfight3r / gist:f5fd7483967300273eed
Created February 20, 2015 01:20
debugging dhcp session with tcpdump/dhcpdump
[root@testserver01 ~]# tcpdump -lenx -s 1500 port bootps or port bootpc | dhcpdump
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 1500 bytes
TCPdump 3.8.x output
TIME: 15:54:23.478149
IP: > (00:50:56:94:00:01) > (Broadcast)
OP: 1 (BOOTPREQUEST)
HTYPE: 1 (Ethernet)
HLEN: 6