nops 0x9090

💭

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I write data that executes code

0x9090 / gist:4d14a68afe6c8314f92e

Last active April 23, 2018 18:43

copy / paste hijack trick


	<html>
	<head>
	<title>sneaky copy-paste terminal example</title>
	</head>
	<style>
	.codeblock {
	background-color: lightyellow;
	border: 1px dotted black;
	margin-left: 50px;

0x9090 / gist:5444937462311cb5a075

Last active June 1, 2017 21:02

Indirect Linux Command Execution

	These are some common Linux programs which can be used to execute other software. This demonstrates the risk of implicitly granting sudo privledges to non-suid programs. For example, if you lock down sudo to everything except for vim, then a local attacker could still open a full root shell with that limited sudo vim privledge.


	tcpdump
	$ tcpdump -n -i lo -G1 -w /dev/null -z ./program.sh

	tar
	$ tar c a.tar -I ./program.sh a

	zip

0x9090 / gist:2d2d632be2e7fe5eb0d5

Created July 10, 2015 00:12

Secure Development Tips

	1: Restrict all code to very simple control flow constructs. Do not use GOTO statements, setjmp or longjmp constructs, or direct or indirect recursion.

	2: All loops must have a fixed upper bound. It must be trivially possible for a checking tool to statically prove that a preset upper bound on the number of iterations of a loop cannot be exceeded. If the loop-bound cannot be proven statically, the rule is considered violated.

	3: Do not use dynamic memory allocation after initialization.

	4: No function should be longer than what can be printed on a single sheet of paper (in a standard reference format with one line per statement and one line per declaration.) Typically, this means no more than about 60 lines of code per function.

	5: The assertion density of the code should average a minimum of two assertions per function. Assertions must always be side effect-free and should be defined as Boolean tests.

0x9090 / torrc.examples.txt

Created February 8, 2016 06:47

torrc examples

	This file is part of Whonix
	Copyright (C) 2012 - 2014 Patrick Schleizer <[email protected]>
	See the file COPYING for copying conditions.

	** Do NOT edit this file! **

	This file will show you examples you can copy and paste to /etc/tor/torrc

	Additionally, you can read the official Tor Manual at:
	https://www.torproject.org/docs/tor-manual.html.en

0x9090 / mime.types

Created April 4, 2016 07:35

0x9090 / Coordinating ADFS Token Lifetime

Created July 27, 2016 20:50

	------------
	This is a backup of a useful article on ADFS token lifetimes that was taken down. Original URL is = https://tristanwatkins.com/coordinating-adfs-2012-r2-token-lifetime-logon-prompt-enforce-revocation-session-duration-public-network/
	------------



	Coordinating AD FS 2012 R2 token lifetimes to reduce logon prompts, enforce revocation and limit session duration over public networks

	Back in February, I posted a question on the Geneva forum about Adjusting token lifetimes at the Web Application Proxy (WAP) for external access:

0x9090 / hacker_history.txt

Last active October 22, 2024 00:41

History of Hacking

	-------------------------------------------------------------
	--- Mirrored From http://quietlydreaming.wumpy.xyz/qd.txt ---
	-------------------------------------------------------------

	1961.01.02 Caltech hackers (Fiendish Fourteen) hacked the stunt cards at the Rose Bowl (U of Wash vs Minnesota)
	to say CALTECH instead of WASHINGTON and show a beaver instead of a husky
	1969.10.29 The Internet is born as the first ARPANET link was established on October 29, 1969, between the IMP at UCLA and the IMP at SRI. By December, the entire 4-node network was connected.
	1971.00.00 John Draper (Cap'n Crunch) uses whistle (blue box) to access Ma Bell
	1971.00.00 First e-mail program written by Ray Tomlinson
	1972.05.00 John Draper arrested for phone fraud

0x9090 / gist:cb1e3b20f65c0919313d770d269f2486

Last active March 1, 2017 09:51

structured cookie testing

	- clear your browsers cache, delete everyting (this will log you out)
	- visit the page with the fresh reseted browser and see what cookie you get when you visit page first time (without being logged in)
	- save this cookie for later
	- now browse the site while beeing NOT logged in, see if and how the cookie changes
	- after collecting all data that not involves a session, go and log in
	- save this cookie, now compare with the cookie you gathered at first visit
	- check what fields have changed, those that stayed same will move down on the list as second choice for alter testing
	- any value that has changed, or any parameter that was beeing added, is now to be investigated
	- now try changing values, start with the IP and useragent field first
	- see if it logs you out after changing your useragent

0x9090 / listener.py

Last active April 12, 2017 09:05

Simple Socket Listener

	#!/usr/bin/env python
	import socket, sys

	sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
	port = 6675
	server_address = ("0.0.0.0", port)
	sock.bind(server_address)
	sock.listen(1)

	while True:

0x9090 / bin_to_cstr.py

Last active June 15, 2017 09:45

Binary File to C String

	#!/usr/bin/env python
	import os, binascii

	# Converts the target binary file to a C formatted string. Useful for embedding binary files in C source code

	target = "C:\\Windows\\System32\\cmd.exe"
	output_file = "C:\\file.txt"
	bytes_per_line = 16