C1tas

Use pre-built gccemacs

Fortunatly we could use pre-built gccemacs right now.

Those two repos did the greate job for us.

Here is the tutorial:

For that you need to compile gcc (duh). I edited Homebrew's gcc formula:

If you run VMware Workstation 11 or above you may encounter high CPU usage from process khugepaged on Ubuntu 15.04+

The fix is to disable transparent hugepages. It seems Ubuntu has it enabled by default.

You can check the current status on your system by running:

cat /sys/kernel/mm/transparent_hugepage/enabled

cat /sys/kernel/mm/transparent_hugepage/defrag

	#!/bin/sh

	# Create VLANs to match the configuration on the FreshTomato router cj-router-3200
	#
	# Adapted from the following sources:
	# - https://virtualize.link/asus-vlans/
	# - https://gist.github.com/Jimmy-Z/6120988090b9696c420385e7e42c64c4
	# - https://www.snbforums.com/threads/vlans-trunk-interface-tagged-and-untagged-traffic-rt-ax86u-and-rt-ax88u.78411/#post-846773
	# - https://www.snbforums.com/threads/rt-86u-vlanctl-ethctl-usage-puzzle.54375/

	# in recovery mode
	❯ csrutil enable --without debug

	# note that prior macOS 11.0 this would disable "Debugging Restrictions"
	# since macOS 11.0 it seems to be disabling "Apple Internal" and "Filesystem Protections"

	❯ csrutil status
	System Integrity Protection status: unknown (Custom Configuration).

	Configuration:

	#!/usr/bin/env python
	# Based on https://www.openwall.com/lists/oss-security/2018/08/16/1
	# untested CVE-2018-10933

	import sys, paramiko
	import logging

	username = sys.argv[1]
	hostname = sys.argv[2]
	command = sys.argv[3]

	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
	;;;
	;;; Copyright (C), zznop, [email protected]
	;;;
	;;; This software may be modified and distributed under the terms
	;;; of the MIT license. See the LICENSE file for details.
	;;;
	;;; DESCRIPTION
	;;;
	;;; This PoC shellcode is meant to be compiled as a blob and prepended to a ELF

	def eventlet_patcher():
	# Ref: https://github.com/eventlet/eventlet/pull/467
	# Ref: https://github.com/eventlet/eventlet/issues/468
	from eventlet.wsgi import HttpProtocol

	def new_get_environ(self):
	env = self.server.get_environ()
	env['REQUEST_METHOD'] = self.command
	env['SCRIPT_NAME'] = ''

	## 调用IDEA反编译整个Jar包
	IDEA的反编译插件<https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler>没有在界面上没有提供一次反编译整个Jar包的功能，但可以通过他在命令行中调用他的工具类来反编译整个Jar包调用IDEA的安装目录的"plugins\java-decompiler\lib\java-decompiler.jar"的org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler便可实现.
	例如`java -cp "C:\Program Files\JetBrains\IntelliJ IDEA 2017.3\plugins\java-decompiler\lib\java-decompiler.jar" org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler -dgs=true dacp-dp-executor-steps-guizhou-0.0.1-SNAPSHOT.jar mysrc`

	mysrc目录下会有生成的整个Jar包的源文件(打成了jar,用zip解压即可)其实是用fernflower<https://github.com/fesh0r/fernflower>实现的

	After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
	The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

	Database files have to be updated before starting the server, here are the steps that had to be followed:

	# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
	brew unlink postgresql
	brew install [email protected]
	brew unlink [email protected]
	brew link postgresql