240 lines
9.1 KiB
C
240 lines
9.1 KiB
C
#include "os_types.h"
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#include "elf_abi.h"
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#include "gx2sploit/kexploit.h"
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#include "structs.h"
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#include "main_hook.h"
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#include "common.h"
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/* Install functions */
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static void InstallMain(private_data_t *private_data);
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#define FORCE_SYSMENU (VPAD_BUTTON_ZL | VPAD_BUTTON_ZR | VPAD_BUTTON_L | VPAD_BUTTON_R)
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void PrepareScreen(private_data_t *private_data);
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/* ****************************************************************** */
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/* ENTRY POINT */
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/* ****************************************************************** */
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void __main(void) {
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/* coreinit functions */
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unsigned int coreinit_handle;
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OSDynLoad_Acquire("coreinit.rpl", &coreinit_handle);
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/* coreinit os functions*/
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int (*OSForceFullRelaunch)(void);
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void (*OSSleepTicks)(unsigned long long ticks);
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void (*OSExitThread)(int);
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unsigned long long(*OSGetTitleID)();
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OSDynLoad_FindExport(coreinit_handle, 0, "OSForceFullRelaunch", &OSForceFullRelaunch);
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OSDynLoad_FindExport(coreinit_handle, 0, "OSSleepTicks", &OSSleepTicks);
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OSDynLoad_FindExport(coreinit_handle, 0, "OSExitThread", &OSExitThread);
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OSDynLoad_FindExport(coreinit_handle, 0, "OSGetTitleID", &OSGetTitleID);
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/* sysapp functions */
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unsigned int sysapp_handle;
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OSDynLoad_Acquire("sysapp.rpl", &sysapp_handle);
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int(*_SYSLaunchTitleWithStdArgsInNoSplash)(unsigned long long tid, void *ptr);
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unsigned long long(*_SYSGetSystemApplicationTitleId)(int sysApp);
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OSDynLoad_FindExport(sysapp_handle, 0, "_SYSLaunchTitleWithStdArgsInNoSplash", &_SYSLaunchTitleWithStdArgsInNoSplash);
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OSDynLoad_FindExport(sysapp_handle, 0, "_SYSGetSystemApplicationTitleId", &_SYSGetSystemApplicationTitleId);
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/* vpad functions */
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unsigned int vpad_handle;
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OSDynLoad_Acquire("vpad.rpl", &vpad_handle);
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int(*VPADRead)(int controller, VPADData *buffer, unsigned int num, int *error);
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OSDynLoad_FindExport(vpad_handle, 0, "VPADRead", &VPADRead);
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unsigned long long sysmenu = _SYSGetSystemApplicationTitleId(0);
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/* pre-menu button combinations which can be held on gamepad */
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int vpadError = -1;
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VPADData vpad;
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VPADRead(0, &vpad, 1, &vpadError);
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if(vpadError == 0) {
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if(((vpad.btns_d|vpad.btns_h) & FORCE_SYSMENU) == FORCE_SYSMENU) {
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// menu launch backup code
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_SYSLaunchTitleWithStdArgsInNoSplash(sysmenu, 0);
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OSExitThread(0);
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return;
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}
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}
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/* Get our memory functions */
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unsigned int* functionPointer;
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void* (*p_memset)(void * dest, unsigned int value, unsigned int bytes);
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void (*_Exit)(int);
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OSDynLoad_FindExport(coreinit_handle, 0, "memset", &p_memset);
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OSDynLoad_FindExport(coreinit_handle, 0, "_Exit", &_Exit);
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private_data_t private_data;
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p_memset(&private_data, 0, sizeof(private_data_t));
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private_data.coreinit_handle = coreinit_handle;
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private_data.memset = p_memset;
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private_data.data_elf = (unsigned char *) main_hook_main_hook_elf; // use this address as temporary to load the elf
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OSDynLoad_FindExport(coreinit_handle, 1, "MEMAllocFromDefaultHeapEx", &functionPointer);
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private_data.MEMAllocFromDefaultHeapEx = (void*(*)(unsigned int, unsigned int))*functionPointer;
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OSDynLoad_FindExport(coreinit_handle, 1, "MEMFreeToDefaultHeap", &functionPointer);
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private_data.MEMFreeToDefaultHeap = (void (*)(void *))*functionPointer;
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OSDynLoad_FindExport(coreinit_handle, 0, "memcpy", &private_data.memcpy);
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OSDynLoad_FindExport(coreinit_handle, 0, "OSEffectiveToPhysical", &private_data.OSEffectiveToPhysical);
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OSDynLoad_FindExport(coreinit_handle, 0, "DCFlushRange", &private_data.DCFlushRange);
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OSDynLoad_FindExport(coreinit_handle, 0, "ICInvalidateRange", &private_data.ICInvalidateRange);
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uint32_t gx2_handle = 0;
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OSDynLoad_Acquire("gx2.rpl", &gx2_handle);
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void (*GX2Shutdown)(void);
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void (*GX2Init)(void *arg);
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OSDynLoad_FindExport(gx2_handle, 0, "GX2Init", &GX2Init);
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OSDynLoad_FindExport(gx2_handle, 0, "GX2Shutdown", &GX2Shutdown);
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GX2Init(NULL);
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run_kexploit(coreinit_handle);
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GX2Shutdown();
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/* Do SYSLaunchMiiStudio to boot HBL */
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void (*SYSLaunchMiiStudio)(void) = 0;
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OSDynLoad_FindExport(sysapp_handle, 0, "SYSLaunchMiiStudio", &SYSLaunchMiiStudio);
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SYSLaunchMiiStudio();
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InstallMain(&private_data);
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Elf32_Ehdr *ehdr = (Elf32_Ehdr *) private_data.data_elf;
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unsigned int mainEntryPoint = ehdr->e_entry;
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//! Install our entry point hook
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unsigned int repl_addr = ADDRESS_main_entry_hook;
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unsigned int jump_addr = mainEntryPoint & 0x03fffffc;
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unsigned int bufferU32 = 0x48000003 | jump_addr;
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KernelWriteU32(repl_addr,bufferU32,coreinit_handle);
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// Place a function to set the IBAT0 inside free kernel space.
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// Register it as syscall 0x09
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unsigned int setIBAT0Addr = 0xFFF02344;
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unsigned int curAddr = setIBAT0Addr;
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KernelWriteU32FixedAddr(curAddr, 0x7C0006AC,coreinit_handle);
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curAddr+=4;
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KernelWriteU32FixedAddr(curAddr, 0x4C00012C,coreinit_handle);
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curAddr+=4;
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KernelWriteU32FixedAddr(curAddr, 0x7C7083A6,coreinit_handle);
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curAddr+=4;
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KernelWriteU32FixedAddr(curAddr, 0x7C9183A6,coreinit_handle);
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curAddr+=4;
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KernelWriteU32FixedAddr(curAddr, 0x7C0006AC,coreinit_handle);
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curAddr+=4;
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KernelWriteU32FixedAddr(curAddr, 0x4C00012C,coreinit_handle);
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curAddr+=4;
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KernelWriteU32FixedAddr(curAddr, 0x4E800020,coreinit_handle);
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curAddr+=4;
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// Setup as syscall 0x09
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kern_write((void*)(KERN_SYSCALL_TBL_1 + (0x09 * 4)), (uint32_t) setIBAT0Addr);
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kern_write((void*)(KERN_SYSCALL_TBL_2 + (0x09 * 4)), (uint32_t) setIBAT0Addr);
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kern_write((void*)(KERN_SYSCALL_TBL_3 + (0x09 * 4)), (uint32_t) setIBAT0Addr);
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kern_write((void*)(KERN_SYSCALL_TBL_4 + (0x09 * 4)), (uint32_t) setIBAT0Addr);
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kern_write((void*)(KERN_SYSCALL_TBL_5 + (0x09 * 4)), (uint32_t) setIBAT0Addr);
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OSExitThread(0);
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}
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static int strcmp(const char *s1, const char *s2) {
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while(*s1 && *s2) {
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if(*s1 != *s2) {
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return -1;
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}
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s1++;
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s2++;
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}
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if(*s1 != *s2) {
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return -1;
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}
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return 0;
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}
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static unsigned int get_section(private_data_t *private_data, unsigned char *data, const char *name, unsigned int * size, unsigned int * addr, int fail_on_not_found) {
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Elf32_Ehdr *ehdr = (Elf32_Ehdr *) data;
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if ( !data
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|| !IS_ELF (*ehdr)
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|| (ehdr->e_type != ET_EXEC)
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|| (ehdr->e_machine != EM_PPC)) {
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OSFatal("Invalid elf file");
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}
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Elf32_Shdr *shdr = (Elf32_Shdr *) (data + ehdr->e_shoff);
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int i;
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for(i = 0; i < ehdr->e_shnum; i++) {
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const char *section_name = ((const char*)data) + shdr[ehdr->e_shstrndx].sh_offset + shdr[i].sh_name;
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if(strcmp(section_name, name) == 0) {
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if(addr)
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*addr = shdr[i].sh_addr;
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if(size)
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*size = shdr[i].sh_size;
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return shdr[i].sh_offset;
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}
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}
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if(fail_on_not_found)
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OSFatal((char*)name);
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return 0;
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}
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/* ****************************************************************** */
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/* INSTALL MAIN CODE */
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/* ****************************************************************** */
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static void InstallMain(private_data_t *private_data) {
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// get .text section
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unsigned int main_text_addr = 0;
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unsigned int main_text_len = 0;
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unsigned int section_offset = get_section(private_data, private_data->data_elf, ".text", &main_text_len, &main_text_addr, 1);
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unsigned char *main_text = private_data->data_elf + section_offset;
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/* Copy main .text to memory */
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if(section_offset > 0) {
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KernelWrite((main_text_addr), (void *)main_text, main_text_len, private_data->coreinit_handle);
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}
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// get the .rodata section
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unsigned int main_rodata_addr = 0;
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unsigned int main_rodata_len = 0;
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section_offset = get_section(private_data, private_data->data_elf, ".rodata", &main_rodata_len, &main_rodata_addr, 0);
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if(section_offset > 0) {
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unsigned char *main_rodata = private_data->data_elf + section_offset;
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/* Copy main rodata to memory */
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KernelWrite((main_rodata_addr), (void *)main_rodata, main_rodata_len, private_data->coreinit_handle);
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}
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// get the .data section
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unsigned int main_data_addr = 0;
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unsigned int main_data_len = 0;
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section_offset = get_section(private_data, private_data->data_elf, ".data", &main_data_len, &main_data_addr, 0);
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if(section_offset > 0) {
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unsigned char *main_data = private_data->data_elf + section_offset;
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/* Copy main data to memory */
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KernelWrite((main_data_addr), (void *)main_data, main_data_len, private_data->coreinit_handle);
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}
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// get the .bss section
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unsigned int main_bss_addr = 0;
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unsigned int main_bss_len = 0;
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section_offset = get_section(private_data, private_data->data_elf, ".bss", &main_bss_len, &main_bss_addr, 0);
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if(section_offset > 0) {
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unsigned char *main_bss = private_data->data_elf + section_offset;
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/* Copy main data to memory */
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KernelWrite((main_bss_addr), (void *)main_bss, main_bss_len, private_data->coreinit_handle);
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}
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}
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