Skip to content

Instantly share code, notes, and snippets.

View dcode's full-sized avatar
πŸ’­
Hack the 🌎!

Derek Ditch dcode

πŸ’­
Hack the 🌎!
View GitHub Profile
redef Site::local_nets += { 10.0.0.0/24, 192.168.11.0/24 };
global share_exe_IPs: addr_set;
event smtp_data (c: connection, is_orig: bool, data:string)
{
for (line in find_all(data, /.*\\\\.*\\.*\.exe/))
{
local temp = split_string(line,/\\/);
local IP = to_addr(temp[2]);
if ( ! is_local(IP) )
@dcode
dcode / remove_modules.sh
Created June 11, 2017 20:40
Remove Python modules back to a given snapshot
# requirements.txt.orig is the result of `pip freeze > requirements.txt.orig`
# requirements.txt is the current snapshot of pipe
comm -2 -3 requirements.txt requirements.txt.orig | awk -F= '{ print $1 }' | xargs pip uninstall -y
@dcode
dcode / bro-findkernelheaders-hack.patch
Last active September 27, 2017 13:58
Patches needed for bro RPM packages for ROCK NSM
diff -u --recursive bro-2.5.orig/aux/plugins/af_packet/cmake/FindKernelHeaders.cmake bro-2.5/aux/plugins/af_packet/cmake/FindKernelHeaders.cmake
--- bro-2.5.orig/aux/plugins/af_packet/cmake/FindKernelHeaders.cmake 2017-05-26 03:15:47.598844347 +0000
+++ bro-2.5/aux/plugins/af_packet/cmake/FindKernelHeaders.cmake 2017-05-26 03:21:44.099990030 +0000
@@ -20,10 +20,18 @@
OUTPUT_STRIP_TRAILING_WHITESPACE
)
+# Admittedly a hack, but in practice we just need *some* headers
+execute_process(
+ COMMAND bash "-c" "find /usr/src/kernels -print | grep -E '/include/linux/user.h' | cut -d/ -f5 | sort -u | tail -1"
@dcode
dcode / 75-dual-home-routing.sh
Last active May 11, 2023 03:11
NetworkManager hook to update the routing tables for dual-homed systems, allowing traffic past the gateway on either interface.
#!/bin/bash
# 75-dual-home-routing
# Description: Updates routing tables to allow traffic on dual-homed boxes
# according to the interface it came in on
# Place in /etc/NetworkManager/dispatcher.d/ and update interface name below
IF=$1
STATUS=$2
function update_routing_table() {

ROCK NSM Beta 0 Notes

@dcode
dcode / Vagrantfile
Created November 4, 2016 17:27
Working Vagrantfile using bento/centos-7.2 w/ bridged interface and self-updating HGFS for /vagrant mapping
# -*- mode: ruby -*-
# vi: set ft=ruby :
Vagrant.configure("2") do |config|
config.vm.box = "bento/centos-7.2"
config.vm.provider "vmware_fusion" do |vmware|
vmware.linked_clone = true
#vmware.gui = true
vmware.vmx["memsize"] = "8192"
@dcode
dcode / Makefile
Last active March 28, 2017 12:03
My bro.spec.in file and Makefile for building bro packages + bro-plugins packages
NAME := bro
GIT_REPO := https://github.com/bro/bro.git
GIT_BRANCH := master
COMMIT0 := $(shell git ls-remote $(GIT_REPO) | grep -E 'refs/heads/$(GIT_BRANCH)$$' | cut -f1)
SHORTCOMMIT0 := $(shell echo $(COMMIT0)| awk '{ print substr($$0, 1, 7)}')
VERSION ?=$(shell cat VERSION | cut -d- -f1)
RELEASE ?=$(shell cat VERSION | cut -d- --complement -f1 | tr -d '-')
SNAPSHOT := .git$(SHORTCOMMIT0)
@dcode
dcode / logging_tweaks.bro
Created October 26, 2016 20:17
Configure kafka & logging extensions in bro 2.5
## Setup Kafka output
@load Bro/Kafka/logs-to-kafka.bro
redef Kafka::topic_name = "bro";
redef Kafka::json_timestamps = JSON::TS_ISO8601;
redef Kafka::tag_json = T;
## Setup event extension to include sensor and probe name
type Extension: record {
## The name of the system that wrote this log. This
@dcode
dcode / es_architecture.txt
Created October 20, 2016 18:01
Monodraw diagram to detail a large scale architecture for elasticsearch
β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚ β”‚ β”‚ β”‚ β”‚ β”‚
β”‚ Master Node β”‚ β”‚ Master Node β”‚ β”‚ Master Node β”‚
β”‚ β”‚ β”‚ β”‚ β”‚ β”‚
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜
node.master: true
β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” nod
@dcode
dcode / bro-aliases.sh
Last active October 11, 2016 15:34
Some handy aliases for working with bro logs
alias bro-fields="awk -vOFS='\n' '/^#fields/ { for ( i = 2 ; i<= NF; i++) print \$i }'"