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--- hackingweek_2014:exploit:exploit5 [2014/03/03 01:57]
ganapati créée
+++ hackingweek_2014:exploit:exploit5 [2017/04/09 15:33] (Version actuelle)
@@ Ligne 1: / Ligne 1: @@
 Source :
+<code C>
-	#include <stdio.h>
+#include <stdio.h>
-	#include <stdlib.h>
+#include <stdlib.h>
-	#include <string.h>
+#include <string.h>
-	#include <unistd.h>
+#include <unistd.h>
-	#include <libgen.h>
+#include <libgen.h>
-	#include <sys/types.h>
+#include <sys/types.h>
-	char *program;
+char *program;
-	struct task {
+struct task {
-		int priority;
+	int priority;
-		char *name;
+	char *name;
-	};
+};
-	void foo() {
+void foo() {
-		system("/bin/sh");
+	system("/bin/sh");
-		exit(EXIT_SUCCESS);
+	exit(EXIT_SUCCESS);
+}
+struct task *task_alloc() {
+	struct task *task = malloc(sizeof(struct task));
+	if (!task) {
+		fprintf(stderr, "%s: error: out of memory\n", program);
+		exit(EXIT_FAILURE);
 	}
-	struct task *task_alloc() {
+	task->name = malloc(8 * sizeof(char));
-		struct task *task = malloc(sizeof(struct task));
+	if (!task->name) {
-		if (!task) {
+		fprintf(stderr, "%s: error: out of memory\n", program);
-			fprintf(stderr, "%s: error: out of memory\n", program);
+		exit(EXIT_FAILURE);
-			exit(EXIT_FAILURE);
-		}
-		task->name = malloc(8 * sizeof(char));
-		if (!task->name) {
-			fprintf(stderr, "%s: error: out of memory\n", program);
-			exit(EXIT_FAILURE);
-		}
-		return task;
 	}
-	void task_free(struct task *task) {
+	return task;
-		free(task->name);
+}
-		free(task);
+void task_free(struct task *task) {
+	free(task->name);
+	free(task);
+}
+void task_write(struct task *task, int priority, char* name) {
+	task->priority = priority;
+	strcpy(task->name, name);
+}
+int main(int argc, char **argv) {
+	struct task* t[2];
+	program = basename(argv[0]);
+	if (argc < 3) {
+		fprintf(stderr, "%s: error: missing argument(s)\n", program);
+		exit(EXIT_FAILURE);
 	}
-	void task_write(struct task *task, int priority, char* name) {
+	t[0] = task_alloc();
-		task->priority = priority;
+	t[1] = task_alloc();
-		strcpy(task->name, name);
+	task_write(t[0], 1, argv[1]);
-	}
+	task_write(t[1], 2, argv[2]);
-	int main(int argc, char **argv) {
+	fprintf(stdout, "Tasks\n=====\n");
-		struct task* t[2];
+	for (int i=0; i<2; i++) {
-		program = basename(argv[0]);
+		fprintf(stdout, "Task(%d)\n", i);
-		if (argc < 3) {
+		fprintf(stdout, "priority: %d\n", t[i]->priority);
-			fprintf(stderr, "%s: error: missing argument(s)\n", program);
+		fprintf(stdout, "name: %s\n\n", t[i]->name);
-			exit(EXIT_FAILURE);
-		}
-		t[0] = task_alloc();
-		t[1] = task_alloc();
-		task_write(t[0], 1, argv[1]);
-		task_write(t[1], 2, argv[2]);
-		fprintf(stdout, "Tasks\n=====\n");
-		for (int i=0; i<2; i++) {
-			fprintf(stdout, "Task(%d)\n", i);
-			fprintf(stdout, "priority: %d\n", t[i]->priority);
-			fprintf(stdout, "name: %s\n\n", t[i]->name);
-		}
-		task_free(t[0]);
-		task_free(t[1]);
-		return EXIT_SUCCESS;
 	}
+	task_free(t[0]);
+	task_free(t[1]);
+	return EXIT_SUCCESS;
+}
+</code>

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