Practice Blue-team
Lessons, exercises, and projects about blue-team
Browse our list of curated database of projects, exercises, and lessons to learn blue-team
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A Linux system has been compromised. Your mission is to investigate a suspicious image, track the attacker, and uncover hidden persistence tasks. Only by cleaning the system correctly will you be able to reconstruct the final flag.
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You’ve received a suspicious executable. Your task is to decompile it, identify the malicious behavior, and clean the binary. Only by successfully removing the malicious activity will the program execute fully and reveal a message that contains the flag.
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A critical database backup was found damaged. As an analyst, your task is to recover usable data and find the flag.
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Analyze a vulnerable form in a fictional licensing site, identify the XSS vulnerability, and validate your finding with a script.
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Analyze a suspicious script, deduce the criminal's name from clues, and decode a flag using CyberChef.
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Analyze a .pcap file containing a suspicious HTTP transaction, find a Base64-encoded string, and decode the flag.
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Analyze a seemingly anonymous photo to determine the city and country where it was taken. Use OSINT techniques to validate the flag.
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A Linux server has been compromised and multiple hidden reverse shells were planted. Your job as an analyst is to detect and remove them.
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Investigate a compromised website to detect a hidden reverse shell. Find the backdoor and validate your discovery.
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You’ve recovered a suspicious string. Your goal is to decrypt it using a classic cipher method called Atbash and validate your result using a script. Only if you decrypt it correctly will you receive the final reward.
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A user known as johnclick1337 posted a threat before disappearing. Use OSINT techniques to uncover his email and validate the flag.
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Face an internal sabotage that has taken down the main web service. Investigate, escalate privileges, and unmask the imposter to restore operability.
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Analyze and repair a Python script sabotaged by an internal attacker to recover the original password. Once fixed, validate it and decode a flag using CyberChef.
Explore the world of Endpoint Detection and Response (EDR) systems, focusing on advanced threat detection and real-time response to safeguard modern businesses. Learn how EDR provides proactive protection, using monitoring, machine learning, and automation to detect and address security risks efficiently.