trexcheng / miasm Goto Github PK

* What steps will reproduce the problem?
1. Install "fresh" Ubuntu 12.04
2. Follow documented installation procedure
3. tcc & miasm will not compile

* What is the expected output? What do you see instead?

Various error messages during configure and make.

* What version of the product are you using? On what operating system?

Latest version as of June 6th 2014.

* Please provide any additional information below.

The following packages are at least required:
$ sudo apt-get install python-dev clang

This list is non-exhaustive, as not all tests succeed in my configuration.

What steps will reproduce the problem?

from miasm.arch.ia32_arch import x86_mn
from miasm.core import parse_asm
from miasm.core import asmbloc
from elfesteem.pe_init import PE

e=PE()
s_text= e.SHList.add_section(name='.text',addr=0x1000,rawsize=0x1000)
t='''
entry_point:
                repz movsb
                ret
'''
all_bloc, symbol_pool = parse_asm.parse_txt(x86_mn,t)
symbol_pool.set_offset(symbol_pool.getby_name("entry_point"), 
e.rva2virt(s_text.addr))
resolved_b, patches = asmbloc.asm_resolve_final(x86_mn, all_bloc[0], 
symbol_pool)
for p in patches:
    e.virt[p] = patches[p]
e.Opthdr.AddressOfEntryPoint = 0x1000
open ('bug.exe','wb').write(str(e))



What is the expected output? What do you see instead?
Traceback (most recent call last):
  File "beta.py", line 13, in <module>
    all_bloc, symbol_pool = parse_asm.parse_txt(x86_mn,t)
  File "/usr/local/lib/python2.7/dist-packages/miasm/core/parse_asm.py", line 164, in parse_txt
    c+=mnemo.prefix2hex(prefix)
  File "/usr/local/lib/python2.7/dist-packages/miasm/arch/ia32_arch.py", line 1397, in prefix2hex
    return reduce(lambda x,y:x+chr(y), prefix, "")
  File "/usr/local/lib/python2.7/dist-packages/miasm/arch/ia32_arch.py", line 1397, in <lambda>
    return reduce(lambda x,y:x+chr(y), prefix, "")
TypeError: an integer is required



Please provide any additional information below.
miasm/core/parse_asm.py
comment out line 164
 c+=mnemo.prefix2hex(prefix)
for a quick fix

What steps will reproduce the problem?
1.
MOV AX, 0x1337
ROL AX, 0x83

AX not simplified (0x1337 <<< 0x83)

2.
MOV AX, 0x1337
ROR AX, 0x83

AX = 0 (should not !)


Fix available at:
http://code.google.com/r/fperigaud-miasmclone/source/detail?r=b6e5f285eac3d4cbae
18c0e2847688bf6a22b717

What steps will reproduce the problem?
1. Open miasm2/arch/sh4/arch.py ( 
https://code.google.com/p/miasm/source/browse/miasm2/arch/sh4/arch.py?r=6e3a0c50
15c91e33fa78beb208db092bd3db00b3#410 )
2. Go to the definition of the __init__ method of class instruction_sh4

What is the expected output?

    super(instruction_sh4, self).__init__(*args, **kargs)

What do you see instead?

    super(instruction_arm, self).__init__(*args, **kargs)


What version of the product are you using? latest mercurial commit.
On what operating system? Arch Linux


Please provide any additional information below.

I'm currently implementing AVR architecture in Miasm2 (to reverse-engineer an 
Arduino firmware) and while reading the code used for SH4 I found the typo 
reported above.

LDR R2, #pcoffset was incorrect

Before : 
>>> from miasm2.arch.arm.arch import mn_armt
>>> print mn_armt.dis('\xc8\x4A')
LDR        R2, [PC, 0xC8]


After:
>>> from miasm2.arch.arm.arch import mn_armt
>>> print mn_armt.dis('\xc8\x4A')
LDR        R2, [PC, 0x320]

Patch provided