def init_jitter(loc_db): global data, run_addr # Create jitter myjit = Machine("x86_32").jitter(loc_db, sys.argv[1]) myjit.vm.add_memory_page(run_addr, PAGE_READ | PAGE_WRITE, data) # Init jitter myjit.init_stack() myjit.set_trace_log() myjit.push_uint32_t(0x1337beef) myjit.add_breakpoint(0x1337beef, code_sentinelle) return myjit
def init_jitter(): global data, run_addr # Create jitter myjit = Machine("x86_32").jitter(sys.argv[1]) myjit.vm.add_memory_page(run_addr, PAGE_READ | PAGE_WRITE, data) # Init jitter myjit.init_stack() myjit.set_trace_log() myjit.push_uint32_t(0x1337beef) myjit.add_breakpoint(0x1337beef, code_sentinelle) return myjit
class Asm_Test_16(Asm_Test): arch_name = "x86_16" arch_attrib = 16 ret_addr = 0x1337 def __init__(self, jitter_engine): self.myjit = Machine(self.arch_name).jitter(jitter_engine) self.myjit.stack_base = 0x1000 self.myjit.stack_size = 0x1000 self.myjit.init_stack() def init_machine(self): self.myjit.vm.add_memory_page(self.run_addr, PAGE_READ | PAGE_WRITE, self.assembly) self.myjit.push_uint16_t(self.ret_addr) self.myjit.add_breakpoint(self.ret_addr, lambda x:False)
class Asm_Test_16(Asm_Test): arch_name = "x86_16" arch_attrib = 16 ret_addr = 0x1337 def __init__(self, jitter_engine): self.myjit = Machine(self.arch_name).jitter(jitter_engine) self.myjit.stack_base = 0x1000 self.myjit.stack_size = 0x1000 self.myjit.init_stack() def init_machine(self): self.myjit.vm.add_memory_page(self.run_addr, PAGE_READ | PAGE_WRITE, self.assembly) self.myjit.push_uint16_t(self.ret_addr) self.myjit.add_breakpoint(self.ret_addr, lambda x: False)
class Asm_Test(object): def __init__(self, jitter): self.myjit = Machine("mips32l").jitter(jitter) self.myjit.init_stack() def __call__(self): self.asm() self.run() self.check() def asm(self): blocks, loc_db = parse_asm.parse_txt(mn_mips32, 'l', self.TXT, loc_db=self.myjit.ir_arch.loc_db) # fix shellcode addr loc_db.set_location_offset(loc_db.get_name_location("main"), 0x0) s = StrPatchwork() patches = asmblock.asm_resolve_final(mn_mips32, blocks, loc_db) for offset, raw in viewitems(patches): s[offset] = raw s = bytes(s) self.assembly = s def run(self): run_addr = 0 self.myjit.vm.add_memory_page( run_addr, PAGE_READ | PAGE_WRITE, self.assembly) self.myjit.cpu.RA = 0x1337beef self.myjit.add_breakpoint(0x1337beef, lambda x: False) self.myjit.init_run(run_addr) self.myjit.continue_run() assert(self.myjit.pc == 0x1337beef) def check(self): raise NotImplementedError('abstract method')
from pdb import pm parser = ArgumentParser(description="x86 32 basic Jitter") parser.add_argument("filename", help="x86 32 shellcode filename") parser.add_argument("-j", "--jitter", help="Jitter engine (default is 'gcc')", default="gcc") args = parser.parse_args() def code_sentinelle(jitter): jitter.run = False jitter.pc = 0 return True myjit = Machine("x86_32").jitter(args.jitter) myjit.init_stack() data = open(args.filename, 'rb').read() run_addr = 0x40000000 myjit.vm.add_memory_page(run_addr, PAGE_READ | PAGE_WRITE, data) myjit.set_trace_log() myjit.push_uint32_t(0x1337beef) myjit.add_breakpoint(0x1337beef, code_sentinelle) myjit.init_run(run_addr) myjit.continue_run()
if __name__ == "__main__": parser = ArgumentParser(description="x86 64 basic Jitter") parser.add_argument("filename", help="x86 64 shellcode filename") parser.add_argument("-j", "--jitter", help="Jitter engine (default is 'gcc')", default="gcc") parser.add_argument("--verbose", "-v", action="store_true", help="Verbose mode") args = parser.parse_args() loc_db = LocationDB() myjit = Machine("x86_64").jitter(loc_db, args.jitter) myjit.init_stack() with open(args.filename, 'rb') as f: data = f.read() run_addr = 0x40000000 myjit.vm.add_memory_page(run_addr, PAGE_READ | PAGE_WRITE, data) if args.verbose: myjit.set_trace_log() myjit.push_uint64_t(0x1337beef) myjit.add_breakpoint(0x1337beef, code_sentinelle) # Add routine catching syscalls myjit.add_exception_handler(EXCEPT_SYSCALL, log_syscalls) myjit.run(run_addr)