pwnium2014

kernelland.c

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

char flag[] = "Itofrjxb2`..c.2.6031]g6b1gg0^)b11cb^^-]z"; 

int main()
{
        int ilen = strlen(flag); 

        int cl = 0; 

        int eax = 0; 

        for (cl=1; cl<4; cl++) { 

        int dl;
        eax=0; 

        do {
                dl = cl;
                dl ^= flag[eax];
                dl++;
                flag[eax] = dl;
                eax++;
                if (eax>=0x28)
                        break;
        } while (1); 

        printf("cl = %d flag = %s\n", cl, flag);
        }
}