Deadly Arthropod - HackTheBox Challenge Writeup

Challenge Information

Field	Value
Challenge Name	Deadly Arthropod
Category	Forensics
Difficulty	Medium
Author	d3vn0mi

Description

Our operatives have intercepted critical information. The origin remains classified, but the objective is clear: retrieve the flag from the provided forensic evidence.

This medium-difficulty forensics challenge requires careful analysis of intercepted data to uncover hidden information and extract the flag.

Important Note

The solve attempt documented in these notes resulted in a timeout termination with no tool calls executed. The automated solving approach did not complete successfully. Below is a framework for manual analysis based on typical “Deadly Arthropod” forensics challenges.

Solution Approach

Standard Forensics Analysis Framework

For challenges of this type, the following analysis steps are typically required:

1. Initial File Analysis

   # Examine the provided file(s)
   file challenge_file
   strings challenge_file | head -20
   hexdump -C challenge_file | head -50

2. Common Forensics Techniques

   # Check for embedded files or archives
   binwalk challenge_file
   
   # Extract potential embedded content
   binwalk -e challenge_file
   
   # Search for ASCII strings and patterns
   strings challenge_file | grep -i "flag\|HTB\|password"

3. Metadata and Hidden Data

   # Examine file metadata
   exiftool challenge_file
   
   # Check for steganography indicators
   file challenge_file
   stat challenge_file

4. Pattern Recognition

   • Look for base64, hex encoding, or other obfuscation
   • Identify file signatures and magic bytes
   • Search for common flag format patterns (HTB{…})

Tools Used

• file — Determine file type
• strings — Extract printable ASCII strings
• hexdump — Examine binary content
• binwalk — Identify embedded files and analyze binary data
• exiftool — Extract metadata
• grep — Pattern matching and filtering

Key Learnings

1. Forensics Fundamentals: When analyzing intercepted data, start with basic file identification and string extraction before moving to advanced techniques.

2. Methodical Analysis: Forensics challenges require systematic examination—don’t skip basic reconnaissance steps.

3. Tool Timeout Handling: Automated solving approaches may require adjusted timeout parameters or manual intervention if automated agents time out.

4. Common Hiding Techniques: Information in forensics challenges is often hidden through:

   • File embedding (binwalk)
   • Metadata fields
   • Steganography
   • Text encoding/obfuscation
   • Archive compression

Flag

HTB{<redacted>}

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Note: This writeup documents the challenge structure and recommended approach. The specific solution steps require access to the actual challenge file and would follow the forensic analysis framework outlined above.