feat: app system challenges

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@dextradata.com>

app-system/elf-x86-format-string-bug-basic-2/artifacts/Makefile

@@ -0,0 +1,28 @@
+CHALLENGE=ch14
+USER=app-systeme-$(CHALLENGE)
+USER_CRACKED=$(USER)-cracked
+
+CC=gcc
+CFLAGS=-m32 -no-pie
+LDFLAGS=-z noexecstack
+
+SRC=$(CHALLENGE).c
+OBJ=$(SRC:.c=.o)
+BIN=$(CHALLENGE)
+
+.DEFAULT_GOAL := challenge
+.PHONY : clean all
+
+$(BIN): $(OBJ)
+	@echo "Compiling..."
+	$(CC) -o $@ $(SRC) $(LDFLAGS) $(CFLAGS)
+
+challenge: $(BIN)
+	@echo "Applying permissions..."
+	rm -f $(OBJ)
+	chown $(USER_CRACKED):$(USER) $(BIN) .passwd Makefile $(SRC)
+	chmod 400 .passwd
+	chmod 440 $(SRC) Makefile
+	chmod 550 $(BIN)
+	chmod u+s $(BIN)
+