level 6 -> 7 [darkelf@localhost darkelf]$ cat orge.c /* The Lord of the BOF : The Fellowship of the BOF - orge - check argv[0]*/ #include #include extern char **environ; main(int argc, char *argv[]){char buffer[40];int i; if(argc < 2){printf("argv error\n");exit(0);} // here is changed!if(strlen(argv[0]) != 77){ printf("argv[0] error\n"); exit(0);} // egghunter for(i=0; environ[i]; i++)memset(environ[i], 0, .. 더보기 level 5 -> 6 [wolfman@localhost wolfman]$ cat darkelf.c /* The Lord of the BOF : The Fellowship of the BOF - darkelf - egghunter + buffer hunter + check length of argv[1]*/ #include #include extern char **environ; main(int argc, char *argv[]){char buffer[40];int i; if(argc < 2){printf("argv error\n");exit(0);} // egghunter for(i=0; environ[i]; i++)memset(environ[i], 0, strlen(environ[i])); if(argv[1][47] != .. 더보기 level 4 -> 5 [orc@localhost orc]$ cat wolfman.c/* The Lord of the BOF : The Fellowship of the BOF - wolfman - egghunter + buffer hunter */ #include #include extern char **environ; main(int argc, char *argv[]) { char buffer[40]; int i; if(argc < 2){ printf("argv error\n"); exit(0); } // egghunter for(i=0; environ[i]; i++) memset(environ[i], 0, strlen(environ[i])); if(argv[1][47] != '\xbf') { printf("stack is .. 더보기 이전 1 ··· 17 18 19 20 21 22 23 ··· 27 다음
