So far, these Net challenges in Protostar have been pretty easy. This challenge, Net 2 got a small bit tougher.

We are given the following code:

#include "../common/common.c"

#define NAME "net2"
#define UID 997
#define GID 997
#define PORT 2997

void run()
{
 unsigned int quad[4]; …

Continuing with the “Net” series of Protostar, is Net 1.

We are given the following code:

#include "../common/common.c"

#define NAME "net1"
#define UID 998
#define GID 998
#define PORT 2998

void run()
{
 char buf[12];
 char fub[12];
 char *q;

 unsigned int wanted; …

I recently started looking at the “Net” problems in Protostar, and found them to be quite a fun change in pace.

Starting with Net 0, we are given the following code:

#include "../common/common.c"

#define NAME "net0"
#define UID 999
#define GID 999
#define PORT 2999 …

Since I’ve been doing a lot of the format string exploits lately, I decided to do the Final 1 challenge.

We start out the challenge by being given the following code:

#include "../common/common.c"

#include <syslog.h>

#define NAME "final1"
#define UID 0
#define GID 0 …

Next up is the last challenge in the Format String series, Format 4.

It starts out with the following code:

#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>

int target;

void hello()
{
 printf("code execution redirected! you win\n"); …

Continuing in the String Format section, the next challenge we run across is Format 3.

We’re first given the following code:

#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>

int target;

void printbuffer(char *string)
{
 printf(string);
} …