CTF Challenges

Overview

The Allied forces are on the brink of launching the largest amphibious assault in history—D-Day. However, concerns are mounting that German intelligence may have intercepted critical operational details.

At Bletchley Park, British codebreakers have intercepted a suspicious email that could jeopardize the entire mission. The message appears to be from an American military officer stationed in London, addressed to an unknown recipient in Berlin. While the content seems innocuous, intelligence analysts suspect it contains an encrypted communication between a double agent and the Nazi Abwehr (military intelligence).

The email includes an attachment and a coded message that, at first glance, appears harmless. However, experts believe sensitive information may be hidden within—concealed using cryptographic techniques, steganography, or other covert methods.

Your Mission

  • Analyze the intercepted email.
  • Extract and examine the attached file.
  • Investigate potential hidden messages.
  • Decrypt any concealed communication before the Nazis gain access to vital intelligence.

Challenge Details

  • The attachment will be released on March 3, 2025.
  • The solution will be posted and updated in the Discussion Forum for analysis and review.
  • Updates to the solution may occur before March 14, 2025.
  • Successfully completing this challenge will unlock CTF Challenge 2.

Watch Solution