johanndt

TL;DR

Install Postgres 9.5, and then:

sudo pg_dropcluster 9.5 main --stop
sudo pg_upgradecluster 9.3 main
sudo pg_dropcluster 9.3 main

zchee

diff --git a/colour.c b/colour.c
index a56ddce..8098f83 100644
--- a/colour.c
+++ b/colour.c
@@ -29,305 +29,85 @@
  * of the 256 colour palette.
  */
 
-struct colour_rgb {
-	u_char  i;

bnagy

GPG / Mutt / Gmail

About

This is a collection of snippets, not a comprehensive guide. I suggest you start with Operational PGP.

Here is an incomplete list of things that are different from other approaches:

• I don't use keyservers. Ever.
• Yes, I use Gmail instead of some bespoke hipster freedom service

JohnMorales

This diff is a modified version of a diff written by Arnis Lapsa.

[ The original can be found here: https://gist.github.com/ArnisL/6156593 ]

This diff adds support to tmux for 24-bit color CSI SRG sequences. This
allows terminal based programs that take advantage of it (e.g., vim or
emacs with https://gist.github.com/choppsv1/73d51cedd3e8ec72e1c1 patch)
to display 16 million colors while running in tmux.

The primary change I made was to support ":" as a delimeter as well

crowell

radare2 is a very cool set of tools that you probably don't know how to use! Let's go through a simple exploit CTF challenge to understand how to use it for exploit development.

We'll be focusing on "ropasaurus rex" which is a simple challenge from Plaid CTF After checking out the latest and greatest radare from git, let's get started!

Open up ropasaurusrex in r2 and call analyze on the binary. We can list the functions with "afl"

atheriel

PyObject * RustPy_InitModule(const char *name, PyMethodDef *methods, const char *doc) {
    // return Py_InitModule4(name, methods, doc, (PyObject *) NULL, PYTHON_API_VERSION);
    return Py_InitModule3(name, methods, doc);
}

pastcompute

# Assumes strings are referenced downwards from the top of a segment
# e.g - set

f string_end @ 0x80620000

# then addui a0,a0,-12288    <-- string is at 0x8061d000

# This used to add a comment with the text but that broke recently
# So now it adds a comment String_addressofstring
# It adds a xref mut I am still perfecting that

zachriggle

RARVM reversible/patchme
 
Modified 'unrar' source to dump context and disassembly.
 
Wrote two separate solvers since the challenge was broken.

To build the disassembler/debugger:

- unzip unrar-src-disassembler.zip -d unrar
- cd unrar

hugsy

Even though well known methods exist to bypass ptrace deactivation on a process when spawning (fake ptrace() preloading, breakpoint on ptrace(), etc... ), it is trickier when process is already protected.

Thankfully Linux 3.2+ was generous enough to provide read/write capabilities to another process with 2 new system calls: sys_process_vm_readv and sys_process_vm_writev. (see https://github.com/torvalds/linux/blob/master/arch/x86/syscalls/syscall_64.tbl#L319)

Manual says:

These system calls transfer data between the address space of the calling

lelandbatey

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results