1337pwn ⋆ Information Security Training

A Message From The Teaching Staff

Before We Begin

How To Use This Course

The Terminal

Linux Filesystem

Essential Commands

How To Navigate The Linux Filesystem

cd: Changing Directories

ls: Listing A Directory's Contents

Help Commands In Applications And Tools

man: Viewing Manual Descriptions & Information

pwd: Where Are You?

whoami: Checking Your Account Type

locate: Search Your Linux Filesystem

whereis: Searching For Binaries

which: Searching For Binaries In The Path Variable

find: Executing More Effective Searches

grep & ps: Filtering

cat: How To Create Files

touch: Creating New Files

mkdir: Creating A New Directory

cp: Copying Files

mv: Renaming Files

rm: Removing Files

rmdir: Removing Directories

Introduction

cat: Displaying Files

head

tail

nl

grep: Filtering A File's Contents For Convenience

sed: Searching For Terms & Replacing Terms

more & less: Displaying Larger Files

Introduction

ifconfig: Querying Network Connections

ifconfig: Spoofing Your IP Address

ifconfig: Altering Your Network Mask & Broadcast Address

ifconfig: Altering MAC Addresses

iwconfig: Examining Wireless Devices

dig: Exploiting The Domain Name System

Using Another DNS Server

Domain Name Mapping

Introduction

Allocating New IP Addresses With The DHCP Server

Deleting & Overwriting Evidence

Deactivating Logging In Linux

Rsyslog

rsyslog.conf

Logrotate

Introduction

apt: Searching For Packages

apt: Installing Packages

apt: Uninstalling Software

apt: Updating Packages

apt: Upgrading Packages

sources.list: Adding Repositories

Synaptic: GUI Based, User-Friendly Installer

git: Cloning The Git Repository

Introduction

Various Types Of Users

Levels Of Permissions

Transferring Ownership Of A File To Another User

Transferring Ownership Of A File To Another Group

Checking Permissions For A File Or Directory

Modifying Permissions

Table Worksheet

Using UGO To Modify Permissions

chmod: Granting Root & Execute Permission Permissions

umask: Altering The Default Permissions Of Files & Directories

SUID: Providing Temporary Root Permissions

SGID: Providing File Owner's Group Permissions

Obsolete Sticky Bit

Searching For Files With The SUID Bit

Introduction

Viewing Current Running Processes

Filtering Via Name Of Process

Searching For Processes That Utilize The Most Resources

Altering Priority Levels of Processes

Setting The Priority Value Of A Process When Initiating

Modifying The Priority Of A Running Process

kill: Stopping Processes On Linux

Running Processes In The Background

fg: Moving A Process Into The Foreground

at: Scheduling The Execution Of A Command

Introduction

Viewing & Altering Environment Variables

Viewing Every Environment Variable

grep: Finding Specific Variables

Altering Variable Values For A Session

How To Render Variable Value Modifications Permanent

Modifying The Shell Prompt (Command Line)

Modifying The Path

Adding A New Tool To The Path Variable

Avoid The Common Mistake That Beginner Linux Users Make

Creating Your Custom User-Defined Variable

Introduction

The Bash Shell

Download First Bash Script

Creating Your First Bash Script

Granting Execute Permissions

Executing Your Bash Script

Download Second Bash Script

Creating Your Second Bash Script

Using Nmap For Reconnaissance

Download Third Bash Script

Creating Your Third Bash Script

Download Modified Third Bash Script

Including Variables & Prompts In Your Third Bash Script

Executing Your Third Bash Script

Introduction

Compression

tar: Combining Files & Creating A Single Archive File

Creating Compressed Files

Producing Bit-By-Bit Or Physical Duplicates Of Storage Devices

Introduction

Understanding The /dev Directory

How Linux Delineates Storage Devices

Hard Drive Partitions

Character Devices Vs. Block Devices

lsblk: Enumerate Block Devices & Information

Mounting & Unmounting Storage Devices

Collecting Data On Mounted Disks

Inspecting For Errors

Introduction

Kernel Module

Finding Your Linux System's Kernel Version

sysctl: Linux Kernel Tuning

lsmod & man: Listing Installed Modules In The Kernel & Learning About Modules

modinfo: Obtaining Additional Information On Kernel Modules

Management Of Loadable Kernel Modules (LKM)

Introduction

How To Arrange A Event Or Job To Run Automatically

How To Schedule A Backup Task

Scheduling Your Third Bash Script With crontab

Shortcuts For crontab

Including Services In The rc.d Script

Including Services Using A Graphical User Interface (GUI)

Introduction

Finding Third-Party Python Modules To Add

pip: Installing Python Packages

Installing Third-Party Python Modules

Downloading First Python Script

Creating Your First Python Script

Examining The Code In Your First Python Script

chmod: File Permissions - 755

Creating Your Second Python Script

Adding Comments To Your Python Script

Functions In Python

Lists & Arrays

Modules

Object-oriented programming

Downloading Third Python Script

Creating Your Third Python Script

Creating Your Fourth Python Script

Dictionaries

if Structure

if...else Structure

Loops Structure

Enhancing Python Scripts

Exception Handling

Download The 1337pwn Cracker Python Script

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