binary search

binary_search/home/ctf-player/drop-in/guessing_game.sh

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+
+            #!/bin/bash
+
+            # Generate a random number between 1 and 1000
+            target=$(( (RANDOM % 1000) + 1 ))
+
+            echo "Welcome to the Binary Search Game!"
+            echo "I'm thinking of a number between 1 and 1000."
+
+            # Trap signals to prevent exiting
+            trap 'echo "Exiting is not allowed."' INT
+            trap '' SIGQUIT
+            trap '' SIGTSTP
+
+            # Limit the player to 10 guesses
+            MAX_GUESSES=10
+            guess_count=0
+
+            while (( guess_count < MAX_GUESSES )); do
+                read -p "Enter your guess: " guess
+
+                if ! [[ "$guess" =~ ^[0-9]+$ ]]; then
+                    echo "Please enter a valid number."
+                    continue
+                fi
+
+                (( guess_count++ ))
+
+                if (( guess < target )); then
+                    echo "Higher! Try again."
+                elif (( guess > target )); then
+                    echo "Lower! Try again."
+                else
+                    echo "Congratulations! You guessed the correct number: $target"
+
+                    # Retrieve the flag from the metadata file
+                    flag=$(cat /challenge/metadata.json | jq -r '.flag')
+                    echo "Here's your flag: $flag"
+                    exit 0  # Exit with success code
+                fi
+            done
+
+            # Player has exceeded maximum guesses
+            echo "Sorry, you've exceeded the maximum number of guesses."
+            exit 1  # Exit with error code to close the connection
+
+