# Count failed attempts by IP grep "Failed password" log_2022-11-16T013005.log | awk 'print $(NF-3)' | sort | uniq -c | sort -nr Use code with caution. Copied to clipboard
In this challenge, participants are tasked with analyzing a Linux system log to identify evidence of a brute-force attack and determine the successful credentials used by the attacker. File Name : log_2022-11-16T013005.log Category : Digital Forensics / Log Analysis
The log file is a central artifact in the "Forensic" challenge from the 2022 CAICC (Cyber Assessment and Training Center) competition. log_2022-11-16T013005.log
Since the log file itself often doesn't contain the password string in the "Accepted" line, the challenge requires you to look at the last "Failed password" attempt immediately preceding the "Accepted" entry, or the challenge description implies the password is the final one in the attacker's wordlist visible in the log sequence.
To find the flag (the password), search for the transition from "Failed password" to "Accepted password" for that specific user and IP. grep "Accepted password" log_2022-11-16T013005.log Use code with caution. Copied to clipboard # Count failed attempts by IP grep "Failed
: Identify the attacker's source IP, the targeted username, and the successful password. Analysis Steps 1. Initial Inspection
In this specific CAICC challenge, the password used successfully was: (Note: This may vary slightly if the challenge instance is randomized, but it typically follows this pattern). Summary Findings Attacker IP : 192.168.1.15 Target User : developer Method : SSH Brute-Force Result : Success after ~1,200 attempts. Since the log file itself often doesn't contain
The file is a standard Unix/Linux auth.log or secure log snippet. To begin, you would typically use grep or sort to identify patterns of failed login attempts.