From a69dc5437ea53c19c3eb3040a539b20ee3e64473 Mon Sep 17 00:00:00 2001
From: Maxime Vorwerk <Maxime Vorwerk>
Date: Sun, 16 Jun 2024 20:31:30 +0200
Subject: [PATCH] binary search

---
 binary_search/challenge.zip                   | Bin 0 -> 1041 bytes
 .../home/ctf-player/drop-in/guessing_game.sh  |  47 ++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100755 binary_search/challenge.zip
 create mode 100755 binary_search/home/ctf-player/drop-in/guessing_game.sh

diff --git a/binary_search/challenge.zip b/binary_search/challenge.zip
new file mode 100755
index 0000000000000000000000000000000000000000..18679b6c8f56e89deccf0cdd630a23839ceba81d
GIT binary patch
literal 1041
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literal 0
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diff --git a/binary_search/home/ctf-player/drop-in/guessing_game.sh b/binary_search/home/ctf-player/drop-in/guessing_game.sh
new file mode 100755
index 0000000..b98f32b
--- /dev/null
+++ b/binary_search/home/ctf-player/drop-in/guessing_game.sh
@@ -0,0 +1,47 @@
+
+            #!/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
+
+            
\ No newline at end of file