제리의 블로그

picoCTF 2018 quackme Reversing

program void *read_input() { void *result; // eax@2 int v1; // edx@4 void *v2; // [sp+0h] [bp-18h]@1 char v3; // [sp+4h] [bp-14h]@1 int v4; // [sp+8h] [bp-10h]@1 int v5; // [sp+Ch] [bp-Ch]@1 v5 = *MK_FP(__GS__, 20); v2 = 0; v4 = getline(&v2, &v3, stdin); if ( v4 == -1 ) { puts("No line read..."); result = &unk_8048882; } else { result = v2; } v1 = *MK_FP(__GS__, 20) ^ v5; return result; } int do..
CTF 2018. 9. 30. 12:43
picoCTF 2018 be-quick-or-be-dead-1 Reversing

void header() { unsigned int i; // [sp+Ch] [bp-4h]@1 puts("Be Quick Or Be Dead 1"); for ( i = 0; i
CTF/reversing 2018. 9. 30. 11:59
picoCTF 2018 buffer overflow 0

programSource #include #include #include #include #define FLAGSIZE_MAX 64 char flag[FLAGSIZE_MAX]; void sigsegv_handler(int sig) { fprintf(stderr, "%s\n", flag); fflush(stderr); exit(1); } void vuln(char *input){ char buf[16]; strcpy(buf, input); } int main(int argc, char **argv){ FILE *f = fopen("flag.txt","r"); if (f == NULL) { printf("Flag File is Missing. Problem is Misconfigured, please con..
CTF/pwnable 2018. 9. 30. 09:55
Prev 1 ··· 14 15 16 17 18 19 20 ··· 31 Next