started cscg24

cscg24/pwn/intro-pwn-1/Dockerfile

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+# docker build -t pwn1 . && docker run -p 1024:1024 --rm -it pwn1
+
+FROM ubuntu:22.04
+COPY pwn1 flag ynetd .
+
+EXPOSE 1024
+CMD ./ynetd ./pwn1

cscg24/pwn/intro-pwn-1/flag

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+CSCG{THIS_IS_TEST_FLAG}

cscg24/pwn/intro-pwn-1/pwn1.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+
+// pwn1: gcc pwn1.c -o pwn1
+
+// --------------------------------------------------- SETUP
+
+void ignore_me_init_buffering() {
+	setvbuf(stdout, NULL, _IONBF, 0);
+	setvbuf(stdin, NULL, _IONBF, 0);
+	setvbuf(stderr, NULL, _IONBF, 0);
+}
+
+void kill_on_timeout(int sig) {
+  if (sig == SIGALRM) {
+  	printf("[!] Anti DoS Signal. Patch me out for testing.");
+    _exit(0);
+  }
+}
+
+void ignore_me_init_signal() {
+	signal(SIGALRM, kill_on_timeout);
+	alarm(60);
+}
+
+// --------------------------------------------------- MENU
+
+void WINgardium_leviosa() {
+    printf("┌───────────────────────┐\n");
+    printf("│ You are a Slytherin.. │\n");
+    printf("└───────────────────────┘\n");
+    system("/bin/sh");
+}
+
+void welcome() {
+    char read_buf[0xff];
+    printf("Enter your witch name:\n");
+    gets(read_buf);
+    printf("┌───────────────────────┐\n");
+    printf("│ You are a Hufflepuff! │\n");
+    printf("└───────────────────────┘\n");
+    printf(read_buf);
+}
+
+void AAAAAAAA() {
+    char read_buf[0xff];
+    
+    printf(" enter your magic spell:\n");
+    gets(read_buf);
+    if(strcmp(read_buf, "Expelliarmus") == 0) {
+        printf("~ Protego!\n");
+    } else {
+        printf("-10 Points for Hufflepuff!\n");
+        _exit(0);
+    }
+}
+// --------------------------------------------------- MAIN
+
+void main(int argc, char* argv[]) {
+	ignore_me_init_buffering();
+	ignore_me_init_signal();
+
+    welcome();
+    AAAAAAAA();
+}
+
+