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| Section | Objectives |
|---|---|
| Cloud and IoT Security | - Cloud computing security concepts - IoT security fundamentals |
| Network Attacks | - Denial of Service (DoS/DDoS) - Sniffing and session hijacking |
| Cryptography | - Encryption, hashing, and cryptanalysis |
| System Hacking | - Malware threats and system exploitation - Gaining access and privilege escalation |
| Web and Application Security | - Web application hacking techniques |
| Introduction to Ethical Hacking | - Ethical hacking concepts and methodology |
| Reconnaissance Techniques | - Footprinting and information gathering - Scanning networks and enumeration |
| Wireless and Mobile Security | - Mobile platform vulnerabilities - Wireless network attacks |
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NEW QUESTION # 114
An authorized security assessment is performed on a public-sector services portal in Madison, Wisconsin. After authenticating with a controlled test account, the assessor captures the authentication identifier issued by the application.
Under controlled lab conditions, she attempts to reuse the captured identifier from a separate machine connected through a different encrypted channel. Although the identifier remains valid and within its lifetime, the application rejects the request when presented from the alternate environment.
Analysis indicates that the server evaluates characteristics associated with the original secure exchange before allowing continued use of the issued identifier.
Which defensive mechanism most likely explains this behavior?
Answer: B
Explanation:
The behavior indicates that the authentication token is tied to properties of the original secure session, so it becomes invalid when reused outside that same cryptographic session context.
This reflects a mechanism where tokens are bound to the TLS connection, preventing reuse from a different encrypted session even if the token itself is still valid.
NEW QUESTION # 115
You are an ethical hacker tasked with conducting an enumeration of a company's network. Given a Windows system with NetBIOS enabled, port 139 open, and file and printer sharing active, you are about to run some nbtstat commands to enumerate NetBIOS names. The company uses |Pv6 for its network. Which of the following actions should you take next?
Answer: D
Explanation:
The nbtstat command is a Windows utility that displays NetBIOS over TCP/IP (NetBT) protocol statistics, NetBIOS name tables, and the NetBIOS name cache. However, the nbtstat command does not support IPv6 addresses, which are the standard format for the Internet Protocol version 6 (IPv6). Therefore, using the nbtstat command with IPv6 addresses will result in an error message or no output. To enumerate NetBIOS names on a network that uses IPv6, you should switch to an enumeration tool that supports IPv6, such as Nmap, which is a network scanning and security auditing tool. Nmap has a scripting engine (NSE) that allows users to write and execute scripts for various network tasks, including NetBIOS enumeration. Nmap can also detect the operating system, services, and vulnerabilities of the target machines, regardless of the IP version they use. References:
* Nbtstat Command - Computer Hope
* Nbtstat CMD: Windows Network Command Line Prompt
* [Nmap Scripting Engine (NSE) Documentation]
NEW QUESTION # 116
During a penetration testing assignment, a Certified Ethical Hacker (CEH) used a set of scanning tools to create a profile of the target organization. The CEH wanted to scan for live hosts, open ports, and services on a target network. He used Nmap for network inventory and Hping3 for network security auditing. However, he wanted to spoof IP addresses for anonymity during probing. Which command should the CEH use to perform this task?
Answer: C
Explanation:
The command C. Hping3 -S 192.168.1.1 -a 192.168.1.254 -p 22 -flood is the correct one to spoof IP addresses for anonymity during probing. This command sends SYN packets (-S) to the target IP 192.168.1.1 with a spoofed source IP (-a) 192.168.1.254 on port 22 (-p) and floods the target with packets (-flood). This way, the CEH can hide his real IP address and avoid detection by the target's firewall or IDS12.
The other commands are incorrect for the following reasons:
* A. Hping3 -110.0.0.25 --ICMP: This command sends ICMP packets (-ICMP) to the target IP 10.0.0.25, but does not spoof the source IP. Therefore, the CEH's real IP address will be exposed to the target.
* B. Nmap -sS -Pn -n -vw --packet-trace -p- --script discovery -T4: This command performs a stealthy SYN scan (-sS) on all ports (-p-) of the target without pinging it (-Pn) or resolving DNS names (-n). It also enables verbose output (-v), packet tracing (-packet-trace), and discovery scripts (-script discovery) with an aggressive timing (-T4). However, this command does not spoof the source IP, and in fact, reveals more information about the scan to the target by using packet tracing and discovery scripts.
* D. Hping3-210.0.0.25-p 80: This command sends TCP packets (default) to the target IP 10.0.0.25 on port 80 (-p), but does not spoof the source IP. Therefore, the CEH's real IP address will be exposed to the target.
References:
* 1: Master hping3 and Enhance Your Network Strength | GoLinuxCloud
* 2: Spoofing Packets with Hping3 - YouTube
NEW QUESTION # 117
Study the Snort rule given below:
[Image shows two Snort rules with alert messages for NETBIOS DCERPC ISystemActivator bind attempt, targeting TCP ports 135 and 445. References include CVE: CAN-2003-0352.]
Answer: B
Explanation:
The Snort rule in the image is detecting suspicious bind attempts over DCERPC (Distributed Computing Environment/Remote Procedure Call), specifically targeting ports 135 (RPC) and 445 (SMB) with crafted content. The rule references CVE CAN-2003-0352.
CVE-2003-0352 is associated with the DCOM RPC vulnerability in Microsoft Windows that was exploited by the MS Blaster (also known as Lovsan) worm in 2003.
Key Indicators from the Snort Rule:
alert tcp $EXTERNAL_NET any -> $HOME_NET 135
content includes DCERPC binding pattern (|05| and |0b| with specific binary patterns) Reference to CVE-2003-0352 Class type: attempted-admin The MS Blaster worm exploited this vulnerability by sending a specially crafted RPC request to port 135, allowing remote code execution.
From CEH v13 Courseware:
Module 6: Malware Threats
Module 11: Session Hijacking
Discussion of historic worms and their exploit signatures, including MS Blaster.
Incorrect Options:
A). WebDav: Typically uses HTTP/HTTPS and was exploited by Nimda.
B). SQL Slammer: Targeted UDP port 1434 (SQL Server), not TCP 135/445.
D). MyDoom: Spread via email and exploited Windows file-sharing mechanisms (port 3127), not DCERPC.
Reference:CEH v13 Study Guide - Module 6: Malware Threats # Classic Worm AttacksCVE Details:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0352Microsoft Security Bulletin MS03-026 - RPC Vulnerability
NEW QUESTION # 118
Several months prior to a confirmed compromise, security telemetry at a semiconductor manufacturer in Phoenix, Arizona showed systematic intelligence gathering focused on executive leadership, research engineers, and publicly exposed infrastructure.
Subsequent investigation determined that the adversary had assembled customized exploit frameworks, tested malware variants against commercial defensive products in isolated environments, and mapped externally accessible services associated with the organization.
These activities were part of a coordinated strategy developed well before any credential abuse or lateral movement was observed.
Determine the APT lifecycle stage represented by these actions.
Answer: A
Explanation:
The correct answer is C. Preparation.
The activity described occurs before credential abuse, lateral movement, persistence, or internal expansion.
The adversary is gathering intelligence, mapping exposed services, preparing exploit frameworks, and testing malware against defensive tools. These actions represent the pre-attack preparation stage of an Advanced Persistent Threat.
APT activity is characterized by defined objectives, long-term probing, advanced resources, specialized skills and methods, and a high tolerance for remaining undetected . The scenario clearly describes these characteristics: the attacker spends months gathering intelligence, building tools, testing malware, and preparing a coordinated attack plan.
Option A. Persistence is incorrect because persistence occurs after initial access, when the attacker establishes a way to maintain access to the compromised environment.
Option B. Expansion is incorrect because expansion involves moving deeper into the environment, escalating privileges, or spreading laterally after compromise.
Option D. Initial Intrusion is incorrect because initial intrusion refers to the first successful compromise of the target environment. The scenario specifically states that these activities occurred before credential abuse or lateral movement.
Therefore, the best answer is C. Preparation.
NEW QUESTION # 119
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