def load_elf_interp(self, p, interp):
for k, f in p.bin._Elf__dynamic(None).items():
xf = cpu.ext(f, size=32)
xf.stub = p.OS.stub(f)
p.state.mmap.write(k, xf)
# we want to add .plt addresses as symbols as well
# to improve asm block views:
plt = got = None
for s in p.bin.Shdr:
if s.name == '.plt':
plt = s
elif s.name == '.got':
got = s
if plt and got:
address = plt.sh_addr
pltco = p.bin.readsection(plt)
while (pltco):
i = p.cpu.disassemble(pltco)
if i.mnemonic == 'JMP' and i.operands[0]._is_mem:
target = i.operands[0].a
if target.base is p.cpu.eip:
target = address + target.disp
elif target.base._is_reg:
target = got.sh_addr + target.disp
elif target.base._is_cst:
target = target.base.value + target.disp
if target in p.bin.functions:
p.bin.functions[address] = p.bin.functions[target]
pltco = pltco[i.length:]
address += i.length
def check_sym(self,v):
if v._is_cst:
x = self.bin.functions.get(v.value,None) or self.bin.variables.get(v.value,None)
if x is not None:
if isinstance(x,str): x=cpu.ext(x,size=32)
else: x=cpu.sym(x[0],v.value,v.size)
return x
return None
def check_sym(self,v):
if v._is_cst:
x = self.bin.functions.get(v.value,None) or self.bin.variables.get(v.value,None)
if x is not None:
if isinstance(x,str): x=cpu.ext(x,size=v.size)
else: x=cpu.sym(x[0],v.value,v.size)
return x
return None
def check_sym(self, v):
if v._is_cst:
x = self.symbols.get(v.value, None)
if x is not None:
if isinstance(x, str):
x = cpu.ext(x, size=32)
else:
x = cpu.sym(x[0], v.value, v.size)
return x
return None
def load_shlib(self):
for k, f in self.bin.functions.iteritems():
self.mmap.write(k, cpu.ext(f, size=32))
def load_shlib(self):
for k, f in self.bin._Elf32__dynamic(None).iteritems():
self.mmap.write(k, cpu.ext(f, size=32))
def __libc_start_main(m, **kargs):
"tags: func_call"
m[cpu.eip] = m(cpu.mem(cpu.esp + 4, 32))
cpu.push(m, cpu.ext('exit', size=32))
def load_elf_interp(self, p, interp):
for k, f in p.bin._Elf__dynamic(None).items():
xf = cpu.ext(f, size=32)
xf.stub = p.OS.stub(f)
p.state.mmap.write(k, xf)
def load_pe_iat(self, p):
for k, f in iter(p.bin.functions.items()):
xf = cpu.ext(f, size=32, task=p)
xf.stub = self.stub(xf.ref)
p.state.mmap.write(k, xf)
def load_pe_iat(self, p):
for k, f in iter(p.bin.functions.items()):
xf = cpu.ext(f, size=32)
xf.stub = p.OS.stub(f)
p.state.mmap.write(k, xf)
def load_shlib(self):
for k,f in self.bin.functions.iteritems():
self.mmap.write(k,cpu.ext(f,size=32))
def load_shlib(self):
for k,f in self.bin._Elf32__dynamic(None).iteritems():
self.mmap.write(k,cpu.ext(f,size=32))
def __libc_start_main(m,**kargs):
"tags: func_call"
m[cpu.eip] = m(cpu.mem(cpu.esp+4,32))
cpu.push(m,cpu.ext('exit',size=32))
def libc_start_main(m, **kargs):
"tags: func_call"
m[cpu.eip] = m(cpu.mem(cpu.esp + 4, 32))
x = cpu.ext("exit", size=32)
x.stub = libc_exit
cpu.push(m, x)
def __libc_start_main(m):
m[cpu.eip] = m(cpu.mem(cpu.esp+4,32))
cpu.push(m,cpu.ext('exit'))
