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ctf/docker/pwn/bof-basic/Dockerfile

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+# T3MP3ST CTF Challenge: Buffer Overflow - ret2win
+# Difficulty: Easy (1)
+# Category: Binary Exploitation
+
+FROM ubuntu:22.04
+
+RUN apt-get update && apt-get install -y \
+    gcc \
+    socat \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /challenge
+
+# Create vulnerable binary source
+COPY vuln.c /challenge/
+COPY flag.txt /challenge/
+
+# Compile with vulnerabilities enabled
+RUN gcc -o vuln vuln.c \
+    -fno-stack-protector \
+    -no-pie \
+    -z execstack \
+    -m64
+
+# Set permissions
+RUN chmod 755 /challenge/vuln && \
+    chmod 444 /challenge/flag.txt
+
+EXPOSE 9001
+
+# Run with socat
+CMD ["socat", "TCP-LISTEN:9001,reuseaddr,fork", "EXEC:/challenge/vuln"]