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ElfSce.py
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from binaryninja import BinaryView, EnumerationBuilder, SectionSemantics, SegmentFlag, StructureBuilder, Type
import os
def define_elf_types(bv: BinaryView):
elf_encoding = EnumerationBuilder.create()
elf_encoding.width = 1
elf_encoding.append("BigEndian", 2)
bv.define_type("ELF_ENCODING", "ELF_ENCODING", elf_encoding)
elf_os = EnumerationBuilder.create()
elf_os.width = 1
elf_os.append("none", 0)
elf_os.append("CELL_LV2", 0x66)
bv.define_type("ELF_OS", "ELF_OS", elf_os)
elf_etype = EnumerationBuilder.create()
elf_etype.width = 2
elf_etype.append("ET_NONE", 0)
elf_etype.append("ET_REL", 1)
elf_etype.append("ET_EXEC", 2)
elf_etype.append("ET_DYN", 3)
elf_etype.append("ET_CORE", 4)
elf_etype.append("ET_SCE_PRX", 0xffa4)
elf_etype.append("ET_SCE_EXEC", 0xfe00)
elf_etype.append("ET_SCE_RELEXEC", 0xfe04)
bv.define_type("ELF_ETYPE", "ELF_ETYPE", elf_etype)
elf_emachine = EnumerationBuilder.create()
elf_emachine.width = 2
elf_emachine.append("EM_PPC64", 0x15)
bv.define_type("ELF_EMACHINE", "ELF_EMACHINE", elf_emachine)
elf_eident = StructureBuilder.create()
elf_eident.append(Type.array(Type.char(), 4), "magic")
elf_eident.append(Type.int(1, False), "class")
elf_eident.append(Type.enumeration_type(bv.arch, elf_encoding), "encoding")
elf_eident.append(Type.int(1, False), "version")
elf_eident.append(Type.enumeration_type(bv.arch, elf_os), "os")
elf_eident.append(Type.int(1, False), "abi")
elf_eident.append(Type.array(Type.char(), 7), "pad")
bv.define_type("e_ident", "e_ident", elf_eident)
func_descriptor = StructureBuilder.create()
func_descriptor.append(Type.pointer_of_width(4, Type.function()), "func_entry")
func_descriptor.append(Type.pointer_of_width(4, Type.void()), "toc_base")
bv.define_type("func_desc", "func_desc", func_descriptor)
elf64_header = StructureBuilder.create()
elf64_header.append(Type.structure_type(elf_eident), "e_ident")
elf64_header.append(Type.enumeration_type(bv.arch, elf_etype), "e_type")
elf64_header.append(Type.enumeration_type(bv.arch, elf_emachine), "e_machine")
elf64_header.append(Type.int(4, False), "e_version")
elf64_header.append(Type.pointer_of_width(8, bv.get_type_by_id("func_desc")), "e_entry")
elf64_header.append(Type.int(8, False), "e_phoff")
elf64_header.append(Type.int(8, False), "e_shoff")
elf64_header.append(Type.int(4, False), "e_flags")
elf64_header.append(Type.int(2, False), "e_ehsize")
elf64_header.append(Type.int(2, False), "e_phentsize")
elf64_header.append(Type.int(2, False), "e_phnum")
elf64_header.append(Type.int(2, False), "e_shentsize")
elf64_header.append(Type.int(2, False), "e_shnum")
elf64_header.append(Type.int(2, False), "e_shstrndx")
bv.define_type("Elf64_Ehdr", "Elf64_Ehdr", elf64_header)
elf_ptype = EnumerationBuilder.create()
elf_ptype.width = 4
elf_ptype.signed = False
elf_ptype.append("PT_NULL", 0)
elf_ptype.append("PT_LOAD", 1)
elf_ptype.append("PT_DYNAMIC", 2)
elf_ptype.append("PT_INTERP", 3)
elf_ptype.append("PT_NOTE", 4)
elf_ptype.append("PT_SHLIB", 5)
elf_ptype.append("PT_PHDR", 6)
elf_ptype.append("PT_SCE_RELA", 0x60000000)
elf_ptype.append("PT_PROC_PARAM", 0x60000001)
elf_ptype.append("PT_PROC_PRX", 0x60000002)
bv.define_type("p_type", "p_type", elf_ptype)
elf_pflags = EnumerationBuilder.create()
elf_pflags.width = 4
elf_pflags.signed = False
elf_pflags.append("PF_X", 0x1)
elf_pflags.append("PF_W", 0x2)
elf_pflags.append("PF_R", 0x4)
elf_pflags.append("PF_SPU_X", 0x00100000)
elf_pflags.append("PF_SPU_W", 0x00200000)
elf_pflags.append("PF_SPU_R", 0x00400000)
elf_pflags.append("PF_RSX_X", 0x01000000)
elf_pflags.append("PF_RSX_W", 0x02000000)
elf_pflags.append("PF_RSX_R", 0x04000000)
bv.define_type("p_flags", "p_flags", elf_pflags)
elf64_phdr = StructureBuilder.create()
elf64_phdr.append(Type.enumeration_type(bv.arch, elf_ptype), "p_type")
elf64_phdr.append(Type.enumeration_type(bv.arch, elf_pflags), "p_flags")
elf64_phdr.append(Type.int(8, False), "p_offset")
elf64_phdr.append(Type.int(8, False), "p_vaddr")
elf64_phdr.append(Type.int(8, False), "p_paddr")
elf64_phdr.append(Type.int(8, False), "p_filesz")
elf64_phdr.append(Type.int(8, False), "p_memsz")
elf64_phdr.append(Type.int(8, False), "p_align")
elf64_phdr.packed = True
bv.define_type("Elf64_Phdr", "Elf64_Phdr", elf64_phdr)
elf_shtype = EnumerationBuilder.create()
elf_shtype.width = 4
elf_shtype.append("SHT_NULL", 0)
elf_shtype.append("SHT_PROGBITS", 1)
elf_shtype.append("SHT_SYMTAB", 2)
elf_shtype.append("SHT_STRTAB", 3)
elf_shtype.append("SHT_RELA", 4)
elf_shtype.append("SHT_HASH", 5)
elf_shtype.append("SHT_DYNAMIC", 6)
elf_shtype.append("SHT_NOTE", 7)
elf_shtype.append("SHT_NOBITS", 8)
elf_shtype.append("SHT_REL", 9)
elf_shtype.append("SHT_SHLIB", 10)
elf_shtype.append("SHT_DYNSYM", 11)
elf_shtype.append("SHT_SCE_RELA", 0x60000000)
elf_shtype.append("SHT_SCE_NID", 0x61000001)
elf_shtype.append("SHT_SCE_IOPMOD", 0x70000080)
elf_shtype.append("SHT_SCE_EEMOD", 0x70000090)
elf_shtype.append("SHT_SCE_PSPRELA", 0x700000A0)
elf_shtype.append("SHT_SCE_PPURELA", 0x700000A4)
bv.define_type("sh_type", "sh_type", elf_shtype)
elf_shflags = EnumerationBuilder.create()
elf_shflags.width = 8
elf_shflags.append("SHF_WRITE", 0x1)
elf_shflags.append("SHF_ALLOC", 0x2)
elf_shflags.append("SHF_EXECINSTR", 0x4)
bv.define_type("sh_flags", "sh_flags", elf_shflags)
elf64_shdr = StructureBuilder.create()
elf64_shdr.append(Type.int(4, False), "sh_name")
elf64_shdr.append(Type.enumeration_type(bv.arch, elf_shtype), "sh_type")
elf64_shdr.append(Type.int(8, False), "sh_flags")
elf64_shdr.append(Type.int(8, False), "sh_addr")
elf64_shdr.append(Type.int(8, False), "sh_offset")
elf64_shdr.append(Type.int(8, False), "sh_size")
elf64_shdr.append(Type.int(4, False), "sh_link")
elf64_shdr.append(Type.int(4, False), "sh_info")
elf64_shdr.append(Type.int(8, False), "sh_align")
elf64_shdr.append(Type.int(8, False), "sh_entsize")
bv.define_type("Elf64_Shdr", "Elf64_Shdr", elf64_shdr)
def define_sce_types(bv: BinaryView):
sys_process_param = StructureBuilder.create()
sys_process_param.append(Type.int(4, False), "size")
sys_process_param.append(Type.int(4, False), "magic")
sys_process_param.append(Type.int(4, False), "version")
sys_process_param.append(Type.int(4, False), "sdk_version")
sys_process_param.append(Type.int(4, True), "primary_prio")
sys_process_param.append(Type.int(4, False), "primary_stacksize")
sys_process_param.append(Type.int(4, False), "malloc_pagesize")
sys_process_param.append(Type.int(4, False), "ppc_seg")
sys_process_param.append(Type.int(4, False), "crash_dump_param_addr")
bv.define_type("sys_process_param_t", "sys_process_param_t", sys_process_param)
prx_info = StructureBuilder.create()
prx_info.append(Type.int(4, False), "size")
prx_info.append(Type.int(4, False), "magic")
prx_info.append(Type.int(4, False), "version")
prx_info.append(Type.int(4, False), "sdk_version")
prx_info.append(Type.int(4, False), "libent_start")
prx_info.append(Type.int(4, False), "libent_end")
prx_info.append(Type.int(4, False), "libstub_start")
prx_info.append(Type.int(4, False), "libstub_end")
prx_info.append(Type.int(1, False), "major_version")
prx_info.append(Type.int(1, False), "minor_version")
prx_info.append(Type.array(Type.int(1, False), 6), "reserved")
bv.define_type("sys_process_prx_info_t", "sys_process_prx_info_t", prx_info)
common_info = StructureBuilder.create()
common_info.append(Type.int(2, False), "module_attribute")
common_info.append(Type.array(Type.int(1, False), 2), "module_version")
common_info.append(Type.array(Type.char(), 27), "module_name")
common_info.append(Type.int(1, False), "infover")
bv.define_type("scemoduleinfo_common", "scemoduleinfo_common", common_info)
module_info_ppu64 = StructureBuilder.create()
module_info_ppu64.append(Type.structure_type(common_info), "common")
module_info_ppu64.append(Type.int(8, False, "gp_value"))
module_info_ppu64.append(Type.int(8, False, "ent_top"))
module_info_ppu64.append(Type.int(8, False, "ent_end"))
module_info_ppu64.append(Type.int(8, False, "stub_top"))
module_info_ppu64.append(Type.int(8, False, "stub_end"))
bv.define_type("scemoduleinfo_ppu64", "scemoduleinfo_ppu64", module_info_ppu64)
scelibstub_common = StructureBuilder.create()
scelibstub_common.append(Type.int(1, False), "structsize")
scelibstub_common.append(Type.array(Type.int(1, False), 1), "reserved1")
scelibstub_common.append(Type.int(2, False), "version")
scelibstub_common.append(Type.int(2, False), "attribute")
scelibstub_common.append(Type.int(2, False), "num_func")
scelibstub_common.append(Type.int(2, False), "num_var")
scelibstub_common.append(Type.int(2, False), "num_tlsvar")
scelibstub_common.append(Type.array(Type.int(1, False), 4), "reserved2")
bv.define_type("scelibstub_common", "scelibstub_common", scelibstub_common)
scelibstub_ppu32 = StructureBuilder.create()
scelibstub_ppu32.append(Type.structure_type(scelibstub_common), "common")
scelibstub_ppu32.append(Type.pointer_of_width(4, Type.char()), "libname")
scelibstub_ppu32.append(Type.pointer_of_width(4, Type.void()), "func_nidtable")
scelibstub_ppu32.append(Type.pointer_of_width(4, Type.void()), "func_table")
scelibstub_ppu32.append(Type.pointer_of_width(4, Type.void()), "var_nidtable")
scelibstub_ppu32.append(Type.pointer_of_width(4, Type.void()), "var_table")
scelibstub_ppu32.append(Type.pointer_of_width(4, Type.void()), "tls_nidtable")
scelibstub_ppu32.append(Type.pointer_of_width(4, Type.void()), "tls_table")
bv.define_type("scelibstub_ppu32", "scelibstub_ppu32", scelibstub_ppu32)
scelibent_common = StructureBuilder.create()
scelibent_common.append(Type.char(), "structsize")
scelibent_common.append(Type.char(), "auxattribute")
scelibent_common.append(Type.int(2, False), "version")
scelibent_common.append(Type.int(2, False), "attribute")
scelibent_common.append(Type.int(2, False), "num_func")
scelibent_common.append(Type.int(2, False), "num_var")
scelibent_common.append(Type.int(2, False), "num_tlsvar")
scelibent_common.append(Type.char(), "hashinfo")
scelibent_common.append(Type.char(), "hashinfotls")
scelibent_common.append(Type.char(), "reserved2")
scelibent_common.append(Type.char(), "nidaltsets")
bv.define_type("scelibent_common", "scelibent_common", scelibent_common)
scelibent_ppu32 = StructureBuilder.create()
scelibent_ppu32.append(Type.structure_type(scelibent_common), "common")
scelibent_ppu32.append(Type.pointer_of_width(4, Type.char()), "libname")
scelibent_ppu32.append(Type.pointer_of_width(4, Type.void()), "nidtable")
scelibent_ppu32.append(Type.pointer_of_width(4, Type.void()), "addtable")
bv.define_type("scelibent_ppu32", "scelibent_ppu32", scelibent_ppu32)
def get_segment_flags(p_flags: int) -> SegmentFlag:
flag_mappings = [
# PF_*, PF_SPU_*, PF_RSX_*
(0x1 | 0x00100000 | 0x01000000, SegmentFlag.SegmentExecutable),
(0x2 | 0x00200000 | 0x02000000, SegmentFlag.SegmentWritable),
(0x4 | 0x00400000 | 0x04000000, SegmentFlag.SegmentReadable)
]
return sum(flag for mask, flag in flag_mappings if int(p_flags) & mask)
def get_section_semantics(sh_type: int, sh_flags: int) -> SectionSemantics:
type_semantics = {
0: SectionSemantics.DefaultSectionSemantics, # SHT_NULL
1: SectionSemantics.ReadOnlyDataSectionSemantics, # SHT_PROGBITS
6: SectionSemantics.ReadWriteDataSectionSemantics, # SHT_DYNAMIC
8: SectionSemantics.ReadWriteDataSectionSemantics, # SHT_NOBITS
}
if sh_type in type_semantics:
return type_semantics[sh_type]
if sh_flags & 0x4: # SHF_EXECINSTR
return SectionSemantics.ReadOnlyCodeSectionSemantics
elif sh_flags & 0x1: # SHF_WRITE
return SectionSemantics.ReadWriteDataSectionSemantics
elif sh_flags & 0x2: # SHF_ALLOC
return SectionSemantics.ReadOnlyDataSectionSemantics
return SectionSemantics.DefaultSectionSemantics
def load_fnids():
fnids = {}
plugin_dir = os.path.dirname(os.path.abspath(__file__))
path = os.path.join(plugin_dir, 'nids')
with open(path, 'r') as f:
for line in f:
nid, name = line.strip().split(' ', 1)
fnids[nid] = name
return fnids