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pyew_core.py
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pyew_core.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Pyew! A Python Tool for malware analysis
Copyright (C) 2009-2013 Joxean Koret
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import re
import os
import sys
import dis
import time
import pickle
import urllib
import operator
import StringIO
from gzip import GzipFile
from datetime import datetime
from config import CODE_ANALYSIS, DEEP_CODE_ANALYSIS, CONFIG_ANALYSIS_TIMEOUT, \
ANALYSIS_FUNCTIONS_AT_END
from safer_pickle import SafeUnpickler
try:
import pefile
hasPefile = True
except ImportError:
hasPefile = False
try:
from Elf import Elf
hasElf = True
except ImportError:
hasElf = False
try:
from vtrace import vtrace
hasDebug = True
except ImportError:
hasDebug = False
from binascii import unhexlify, hexlify
try:
from capstone import *
except ImportError:
print("Cannot import capstone, Pyew will not have disassembly support.")
print("Please install it manually from http://www.capstone-engine.org/")
raise
from config import PLUGINS_PATH
from anal.x86analyzer import CX86CodeAnalyzer
FILTER=''.join([(len(repr(chr(x)))==3) and chr(x) or '.' for x in range(256)])
#-----------------------------------------------------------------------
def to_unicode(buf):
ret = ""
for c in buf:
ret += c + "\x00"
return ret
#-----------------------------------------------------------------------
class CDisObj:
def __init__(self):
self.offset = None
self.size = None
self.mnemonic = None
self.instructionHex = None
self.operands = None
#-----------------------------------------------------------------------
md = None
last_arch = None
last_mode = None
def Decode(offset, buf, arch, mode):
global md, last_arch, last_mode
do_continue = True
total = 0
while do_continue:
do_continue = False
if md == None or last_arch != arch or last_mode != mode:
md = Cs(arch, mode)
last_arch = arch
last_mode = mode
md.detail=False
ret = md.disasm(buf, offset)
last_addr = offset
last_size = 1
for x in ret:
if do_continue:
break
total += 1
if x == []:
x = CDisObj()
x.address = last_addr
x.size = 1
x.mnemonic = "db"
if last_addr != offset:
curr_off = last_addr - offset
else:
curr_off = offset
x.bytes = "00"
x.instruction = None
x.op_str = hexlify(buf[curr_off:curr_off+1])
x.ins_hex = x.op_str
buf = buf[curr_off+1:]
offset = last_addr+1
last_addr += 1
last_size = 1
do_continue = True
prev_was = True
yield x
else:
insn = x
last_addr = x.address + x.size
last_size = x.size
curr_off = last_addr - offset
yield x
if last_addr+15-offset < len(buf):
buf = buf[last_addr+last_size-offset:]
offset = last_addr+last_size
do_continue = True
#-----------------------------------------------------------------------
class EUnknownDisassemblyType(Exception): pass
#-----------------------------------------------------------------------
class CStrings:
def __init__(self, buf=None):
self.buf = buf
def getStrings(self, buf=None, unicode=False):
if buf:
self.buf = buf
scanner = re.compile('[\w| |{|}|\[|\]|,|\||\,|.|\-|_|?|/|\$|@|"|''|!|\\|&|\(|\)|\<|\>|\*|\+|\;|\:|\^|\=|\%|\#|\~|\`|\ñ|\ç|\€]{4,}',
re.MULTILINE | re.IGNORECASE)
ret = scanner.findall(self.buf)
return ret
#-----------------------------------------------------------------------
class COffsetString:
def __init__(self):
self.buf = None
self.minsize = 3
self.offset = 4
def searchForStringAt(self, i):
initial = i
ret = self.buf[i:i+1]
while 1:
i += self.offset
tmp = self.buf[i:i+1]
if tmp.isalpha():
ret += tmp
elif tmp == "\x00":
if len(ret) > self.minsize:
return (ret, initial)
else:
return None
elif tmp == "":
return None
else:
return None
def findall(self):
i = 0
ret = []
while 1:
c = self.buf[i:i+1]
if not c:
break
if c.isalpha():
s = self.searchForStringAt(i)
if s is not None:
ret.append(s)
i += len(s[0])*4
else:
i += 1
else:
i += 1
return ret
#-----------------------------------------------------------------------
class CPyew:
def __init__(self, plugins=True, batch=False):
self.debug = False
self.batch = False
self.antidebug = []
self.virtual = False
self.codeanalysis = CODE_ANALYSIS
self.deepcodeanalysis = DEEP_CODE_ANALYSIS
self.offset = 0
self.previousoffset = []
self.lastasmoffset = 0
self.minoffsetsize = 4
self.deltaoffset = 4
self.physical = False
self.format = "raw"
self.buf = None
self.mode = None
self.filename = None
self.processor="intel"
self.f = None
self.mode=32
self.lines=40
self.bsize=512
self.hexcolumns=16
self.maxfilesize=1024*1024*512
# when reading files embedded in other files this will be the maximum
# number of bytes read
self.embedsize = 1024*1024*5
self.pe = None
self.elf = None
self.calls = []
self.plugins = {}
self.maxsize = None
self.names = {}
self.imports = {}
self.exports = {}
self.ep = 0
self.case = 'high'
self.database = None
self.names = {}
self.functions = {}
self.functions_address = {}
self.xrefs_to = {}
self.xrefs_from = {}
self.queue = set()
self.analyzed = []
self.checking = []
self.tocheck = []
self.antidebug = []
self.function_stats = {}
self.basic_blocks = {}
self.analysing = False
self.analysis_timeout = CONFIG_ANALYSIS_TIMEOUT
self.warnings = []
if hasDebug:
self.has_debug = True
self.loadDebugger()
else:
self.has_debug = False
self._anal = None
self.batch = batch
self.loadPlugins()
def __del__(self):
if self.f:
self.f.close()
if self.has_debug:
self.dbg.release()
def log(self, msg=None, *args):
if not self.batch:
if msg and args:
print msg, " ".join(map(str, args))
elif msg:
print msg
else:
print
def NextHead(self, offset):
obj = self.disasm(offset, self.processor, self.mode, 1)
return offset + obj[0].size
def GetMnems(self, offset, num):
obj = self.disasm(offset, self.processor, self.mode, num)
ret = []
for x in obj:
ret.append(str(x.mnemonic))
return ret
def getByte(self, offset):
return self.getBytes(offset, 1)
def getBytes(self, offset, num):
try:
self.f.seek(offset)
buf = self.f.read(num)
self.seek(self.offset)
return buf
except:
return ""
def getVirtualAddressFromOffset(self, offset):
ret = None
if self.format == "PE":
try:
ret = self.pe.OPTIONAL_HEADER.ImageBase + self.pe.get_rva_from_offset(offset)
except:
pass
elif self.format == "ELF":
ret = offset
for x in self.elf.secnames:
if offset >= self.elf.secnames[x].sh_offset and offset < self.elf.secnames[x].sh_offset + self.elf.secnames[x].sh_size:
rel = offset - self.elf.secnames[x].sh_offset
ret = self.elf.secnames[x].sh_addr + rel
break
return ret
def isVirtualAddress(self, va):
ret = False
if self.format == "PE":
try:
self.pe.get_offset_from_rva(va-self.pe.OPTIONAL_HEADER.ImageBase)
return True
except:
return False
elif self.format == "ELF":
for x in self.elf.secnames:
if self.elf.secnames[x].sh_addr > 0 and va >= self.elf.secnames[x].sh_addr \
and va < self.elf.secnames[x].sh_addr + self.elf.secnames[x].sh_size:
ret = True
break
return ret
def getOffsetFromVirtualAddress(self, va):
ret = None
if self.format == "PE":
try:
ret = self.pe.get_offset_from_rva(va-self.pe.OPTIONAL_HEADER.ImageBase)
except:
print sys.exc_info()[1]
elif self.format == "ELF":
for x in self.elf.secnames:
if va >= self.elf.secnames[x].sh_addr and va < self.elf.secnames[x].sh_addr + self.elf.secnames[x].sh_size:
tmp = va - self.elf.secnames[x].sh_addr
ret = self.elf.secnames[x].sh_offset + tmp
return ret
def executableMemory(self, va):
ret = False
if self.format == "PE":
IMAGE_SCN_MEM_EXECUTE = 0x20000000
for x in self.pe.sections:
min_addr = self.pe.OPTIONAL_HEADER.ImageBase+x.VirtualAddress
max_addr = self.pe.OPTIONAL_HEADER.ImageBase+x.SizeOfRawData
if va >= min_addr and va <= max_addr:
if x.Characteristics & IMAGE_SCN_MEM_EXECUTE != 0:
return True
elif self.format == "ELF":
for x in self.elf.secnames:
if va >= self.elf.secnames[x].sh_addr and va < self.elf.secnames[x].sh_addr + self.elf.secnames[x].sh_size:
SHF_EXECINSTR = 0x4
ret = self.elf.secnames[x].sh_flags & SHF_EXECINSTR != 0
return ret
def showSettings(self):
for x in dir(self):
if x.startswith("_") or x.upper() in ["PE", "ELF", "BOOT", "BIOS", "BUF"] or operator.isCallable(eval("self." + x)) \
or x in ["plugins", "names", "imports", "exports", "functions_address", \
"names", "functions", "xrefs_from", "xrefs_to", "antidebug", \
"function_stats", "basic_blocks", "flowgraphs", "callgraph"]:
continue
else:
self.log("pyew." + x.ljust(16) + ":", eval("self." + x))
self.log()
self.log("Pyew Plugins:")
self.log()
for x in self.plugins:
self.log(x.ljust(8), self.plugins[x].__doc__)
def loadFile(self, filename, file_mode="rb"):
self.filename = filename
self.file_mode = file_mode
if self.filename.lower().startswith("http://") or \
self.filename.lower().startswith("https://") or \
self.filename.lower().startswith("ftp://"):
self.physical = False
tmp = urllib.urlopen(self.filename).read()
self.f = StringIO.StringIO(tmp)
self.maxsize = len(tmp)
else:
self.physical = True
self.f = file(filename, file_mode)
self.maxsize = os.path.getsize(filename)
self.seek(0)
self.fileTypeLoad()
self.offset = 0
def loadFromBuffer(self, buf, filename="<memory>"):
f = StringIO.StringIO(buf)
self.f = f
self.physical = False
self.filename = filename
self.maxsize = len(buf)
self.buf = buf[:self.bsize]
self.fileTypeLoad()
def saveDatabase(self, database):
self.database = database
try:
old_pyew = self
self.filename = old_pyew.f.name
self.f = None
self.plugins = {}
pickle.dump(self, GzipFile(database, "wb"))
self.f = old_pyew.f
self.plugins = old_pyew.plugins
except:
print "Error loading database: %s" % str(sys.exc_info()[1])
self = old_pyew
@staticmethod
def openDatabase(database, mode="rb"):
p = SafeUnpickler(GzipFile(database, "rb"))
new_pyew = p.load()
new_pyew.f = open(new_pyew.filename, mode)
return new_pyew
def loadBootSector(self):
self.format = "BOOT"
self.processor = "intel"
old_deep_value = self.deepcodeanalysis
self.deepcodeanalysis = True
self.ep = 0
self.mode = 16
try:
self.log("x86 Boot Sector")
self.findFunctions("intel")
finally:
self.deepcodeanalysis = old_deep_value
def loadBiosFile(self):
self.format = "BIOS"
self.processor = "intel"
old_deep_value = self.deepcodeanalysis
self.deepcodeanalysis = False
self.ep = 0
self.mode = 16
try:
self.log("BIOS file")
self.printBiosInformation()
if self.codeanalysis:
self.findFunctions("intel")
finally:
self.deepcodeanalysis = old_deep_value
def printBiosInformation(self):
bios_date = datetime.strptime(self.getBytes(0xfff5, 8), "%m/%d/%y")
bios_id = self.getBytes(0xf478, 40)
bios_name = self.getBytes(0xF400, 16)
bios_banner = self.getBytes(0xF500, 64)
self.log("%s %s %s" % (bios_name, bios_id, bios_date))
self.log(bios_banner)
self.log("")
def seemsBios(self):
try:
datetime.strptime(self.getBytes(0xfff5, 8), "%m/%d/%y")
return True
except:
return False
def fileTypeLoad(self):
try:
if self.buf.startswith("MZ") and hasPefile:
self.loadPE()
elif self.buf.startswith("\x7fELF") and hasElf:
self.loadElf()
elif self.buf.startswith("\xB3\xF2\x0D\x0A"):
self.loadPython()
elif self.buf[:255].find("%PDF-") > -1:
self.loadPDF()
elif self.buf.startswith("\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1"):
self.loadOle2()
elif self.getBytes(0x1fe, 2) == "\x55\xAA": # bootsector:
self.loadBootSector()
elif self.seemsBios():
self.loadBiosFile()
except:
print "Error loading file:", sys.exc_info()[1]
if self.debug or self.batch:
raise
def loadPDF(self):
self.format = "PDF"
if self.batch:
return
self.log("PDF File")
self.log()
self.plugins["pdf"](self)
def loadOle2(self):
self.format = "OLE2"
if self.batch:
return
self.log("OLE2 File")
self.log()
self.plugins["ole2"](self)
def loadPython(self):
self.format = "PYC"
if self.batch:
return
self.log("Python Compiled File")
self.log()
self.processor="python"
def getAnalysisObject(self):
if self._anal is not None:
return self._anal
try:
self.analysing = True
anal=CX86CodeAnalyzer(self)
anal.timeout = self.analysis_timeout
anal.antidebug = self.antidebug
anal.names.update(self.functions)
anal.names.update(self.names)
anal.functions = self.functions
anal.functions_address = self.functions_address
anal.xrefs_to = self.xrefs_to
anal.xrefs_from = self.xrefs_from
anal.basic_blocks = self.basic_blocks
anal.function_stats = self.function_stats
self._anal = anal
finally:
self.analysing = False
return anal
def resolveName(self, ops):
orig = str(ops)
ops = str(ops)
if ops.startswith("["):
ops = ops.replace("[", "").replace("]", "")
try:
ops = int(ops, 16)
except ValueError:
return orig
if ops in self.names:
return self.names[ops]
else:
return orig
def getEndingBasicBlocks(self, func):
bbs = []
for bb in func.nodes():
if func.hasParents(bb) and not func.hasChildren(bb):
off = int(bb.name)
if off not in self.basic_blocks:
# this is an error, fixme!
pass
else:
bbs.append(self.basic_blocks[int(bb.name)])
elif not func.hasParents(bb) and not func.hasChildren(bb):
off = int(bb.name)
if off not in self.basic_blocks:
# this is an error, fixme!
pass
else:
bbs.append(self.basic_blocks[int(bb.name)])
return bbs
def getBasicBlockSize(self, bb):
size = 0
for ins in bb.instructions:
size += ins.size
return size
def getFunctionEnd(self, f):
func = self.flowgraphs[f]
end_bbs = self.getEndingBasicBlocks(func)
max_offset = f
for bb in end_bbs:
last_offset = bb.offset + self.getBasicBlockSize(bb)
if last_offset > max_offset:
max_offset = last_offset
return max_offset
def createIntelFunctionsAtEnd(self):
anal = self.getAnalysisObject()
dones = []
while 1:
f = None
self.checkAnalysisTimeout()
funcs = list(self.functions)
for f in funcs:
self.checkAnalysisTimeout()
f_end = self.getFunctionEnd(f)
buf1 = self.getBytes(f_end, 16)
# strip the typical padding characters
buf2 = buf1.lstrip("\xCC").lstrip("\x90")
# ignore all the 0xCC/0x90 characters used for padding
# and, also, do not analyse if the next byte starts
# with a 0x00 because it's probably not an instruction
if buf1 != buf2 and not buf2.startswith("\x00"):
off = f_end + len(buf1)-len(buf2)
if off not in self.functions and off not in dones:
f = off
anal.queue.add(f)
dones.append(off)
if f is not None:
anal.doCodeAnalysis(ep = False, addr = f)
total = len(self.functions)
if total == len(funcs):
break
def checkAnalysisTimeout(self):
anal = self._anal
if anal.timeout != 0 and time.time() > anal.start_time + anal.timeout:
raise Exception("Code analysis for x86 timed-out")
def createIntelFunctionsByPrologs(self):
anal = self.getAnalysisObject()
if self.mode == 32:
prologs = ["8bff558b", "5589e5", "558bec"]
else:
prologs = ["40554883ec", "554889e5"]
hints = []
for prolog in prologs:
hints += self.dosearch(self.f, "x", prolog, cols=60, doprint=False, offset=0)
self.log("\b"*80 + "Found %d possible function(s)" % len(hints) + " "*20 + "\b"*80)
f = None
if len(hints) > 0:
for hint in hints:
f = int(hint.keys()[0])
anal.queue.add(f)
anal.doCodeAnalysis(ep = False, addr = f)
self.log("\n")
def findIntelFunctions(self):
anal = self.getAnalysisObject()
anal.timeout = self.analysis_timeout
anal.doCodeAnalysis()
if self.deepcodeanalysis:
self.log("\b"*80 + "Searching typical function's prologs..." + " "*20)
self.createIntelFunctionsByPrologs()
if ANALYSIS_FUNCTIONS_AT_END:
self.log("\b"*80 + "Searching function's starting at the end of known functions..." + " "*20)
self.createIntelFunctionsAtEnd()
def findFunctions(self, proc):
if proc == "intel":
t = time.time()
self.log("Code Analysis ...")
self.findIntelFunctions()
if self.debug:
self.log("")
self.log("Total time %f second(s)" % (time.time()-t))
def loadElf(self):
EM_X86_64 = 62
EM_386 = 3
EM_MIPS = 8
EM_MIPS_RS3_LE = 10
EM_ARM = 40
EM_AARCH64 = 183
EF_MIPS_ARCH_64 = 0x60000000
EF_MIPS_ARCH_64R2 = 0x80000000
if self.physical:
self.elf = Elf(self.f)
else:
sio = StringIO.StringIO(self.getBuffer())
self.elf = Elf(sio)
self.format = "ELF"
self.log("ELF Information")
self.log()
self.virtual = True
if self.elf.e_machine == EM_X86_64:
self.mode = 64
self.processor = "intel"
elif self.elf.e_machine == EM_386:
self.mode = 32
self.processor = "intel"
elif self.elf.e_machine == EM_MIPS:
self.mode = 32
if self.elf.e_flags & EF_MIPS_ARCH_64R2 or \
self.elf.e_flags & EF_MIPS_ARCH_64:
self.mode = 64
self.processor = "mips"
else:
self.log("Warning! Unsupported architecture, defaulting to Intel x86 (32 bits)")
self.mode = 32
for x in self.elf.secnames:
if self.elf.e_entry >= self.elf.secnames[x].sh_addr and self.elf.e_entry < self.elf.secnames[x].sh_addr + self.elf.secnames[x].sh_size:
self.ep = self.elf.secnames[x].sh_offset
#self.log("\t", self.elf.secnames[x].name, "0x%08x" % self.elf.secnames[x].sh_addr, self.elf.secnames[x].sh_size)
#self.log()
self.log("Entry Point at 0x%x" % self.ep)
if self.database is None:
self.loadElfFunctions(self.elf)
self.log()
def loadElfFunctions(self, elf):
try:
for x in self.elf.relocs:
self.names[x.r_offset] = x.name
self.imports[x.r_offset] = x.name
for x in self.elf.symbols:
if x.name != "" and x.st_value != 0:
self.names[x.name] = x.st_value
except:
pass
if self.codeanalysis:
if self.processor == "intel":
self.findFunctions(self.processor)
def loadPeFunctions(self, pe):
imps = False
try:
for entry in self.pe.DIRECTORY_ENTRY_IMPORT:
for imp in entry.imports:
if imp.name:
name = imp.name
else:
name = "#" + str(imp.ordinal)
self.names[imp.address] = str(entry.dll) + "!" + str(name)
self.imports[imp.address] = str(entry.dll) + "!" + str(name)
imps = True
except:
if not self.batch:
print "***Error loading imports", sys.exc_info()[1]
self.warnings.append("Error loading imports: %s" % sys.exc_info()[1])
try:
addr = None
if 'DIRECTORY_ENTRY_EXPORT' in dir(pe):
for exp in pe.DIRECTORY_ENTRY_EXPORT.symbols:
try:
addr = self.pe.get_offset_from_rva(exp.address)
except:
addr = exp.address
if exp.name and exp.name != "":
self.names[addr] = exp.name
self.exports[addr] = exp.name
else:
self.names[addr] = exp.ordinal
self.exports[addr] = "#" + str(exp.ordinal)
except:
pass
if self.codeanalysis:
if self.processor == "intel":
self.findFunctions(self.processor)
if (not imps or len(self.functions) <= 1) and self.deepcodeanalysis:
self.createIntelFunctionsByPrologs()
self.seek(0)
def loadPE(self):
try:
if self.physical:
self.pe = pefile.PE(self.filename)
else:
self.f.seek(0)
buf = self.f.read()
self.pe = pefile.PE(data=buf)
self.seek(0)
self.format = "PE"
self.log("PE Information")
self.log()
self.virtual = True
if self.pe.FILE_HEADER.Machine == 0x14C: # IMAGE_FILE_MACHINE_I386
self.processor="intel"
self.mode = 32
elif self.pe.FILE_HEADER.Machine == 0x8664: # IMAGE_FILE_MACHINE_AMD64
self.processor="intel"
self.mode = 64
self.log("64 Bits binary")
self.log("Sections:")
for section in self.pe.sections:
self.log(" ", section.Name, hex(section.VirtualAddress), hex(section.Misc_VirtualSize), section.SizeOfRawData)
self.log()
x = self.pe.OPTIONAL_HEADER.AddressOfEntryPoint
s = None
for s in self.pe.sections:
if x >= s.VirtualAddress and x <= s.VirtualAddress + s.SizeOfRawData:
break
if s is not None:
x = x - s.VirtualAddress
x += s.PointerToRawData
self.log("Entry Point at 0x%x" % x)
try:
self.log("Virtual Address is 0x%0x" % (self.pe.OPTIONAL_HEADER.ImageBase + self.pe.get_rva_from_offset(x)))
self.offset = x
self.ep = x
except:
self.log(sys.exc_info()[1])
if self.database is None:
self.loadPeFunctions(self.pe)
self.log()
except:
if self.batch:
raise
self.log("PEFILE:", sys.exc_info()[1])
raise
def loadPlugins(self):
path = PLUGINS_PATH
sys.path.append(path)
for f in os.listdir(path):
if f.startswith("_") or f.startswith(".") or not f.endswith(".py"):
continue
f = f.rstrip(".py")
try:
m = __import__(f)
if not "functions" in dir(m):
continue
if self.plugins == {}:
self.plugins = m.functions
else:
self.plugins.update(m.functions)
except:
if self.debug:
raise
def loadDebugger(self):
self.dbg = vtrace.getTrace()
self.last_regs = {}
def printIp(self, all=False):
addr = None
regs = self.dbg.getRegisters()
last_regs = self.last_regs
for reg in regs:
if reg.lower().find("ip") > -1:
addr = regs[reg]
if reg.find("ctrl") == -1 and reg.find("mm") == -1 and \
reg.find("st") == -1 and reg.find("test") == -1 and \
reg.find("debug") == -1:
if all or len(self.last_regs) == 0 or (self.last_regs.has_key(reg) and self.last_regs[reg] != regs[reg]):
print reg, "\t", "%16x" % regs[reg]
last_regs[reg] = regs[reg]
self.last_regs = last_regs
print self.disassemble(self.dbg.readMemory(addr, self.bsize), mode=self.mode, baseoffset=addr, lines=self.lines/2, marker=True)
def debugHandler(self, command):
cmds = command.split(" ")
if len(cmds) == 0:
return False
ret = True
if cmds[0] == "status":
print self.dbg
elif cmds[0].startswith("run"):
if not self.dbg.isAttached():
self.dbg.execute(self.filename)
if cmds[0] == "runhere":
va = self.getVirtualAddressFromOffset(self.offset)
self.last_regs = {}
self.dbg.run(va)
ip = True
elif len(cmds) == 1:
self.last_regs = {}
self.dbg.run()
ip = False
else:
self.last_regs = {}
addr = int(cmds[1], 16)
self.dbg.run(addr)
ip = True
if ip:
self.printIp()
elif cmds[0] == "ps":
filter = ""
if len(cmds) > 1:
filter = cmds[1]
for x in self.dbg.ps():
if x[1].find(filter) > -1:
print x[0], "\t", x[1]
elif cmds[0] == "stepi":
self.dbg.stepi()
self.printIp()
elif cmds[0] == "stepl":
self.dbg.steploop()
self.printIp()
elif cmds[0] == "maps":
maps = self.dbg.getMemoryMaps()
if len(maps) > 0:
biggest = 0
for amap in maps:
if len(amap[3]) > biggest:
biggest = len(amap[3])
print "Name".ljust(biggest), "Address".ljust(16), "Size"
print
for amap in maps:
print amap[3].ljust(biggest), ("0x%x" % amap[0]).ljust(16), str(amap[1])
elif cmds[0] == "attach":
if len(cmds) == 1:
print "No pid to attach"
else:
pid = int(cmds[1])
self.dbg.attach(pid)
self.printIp()
elif cmds[0] == "detach":
self.dbg.detach()
elif cmds[0] == "regs" or cmds[0] == "ir":
self.last_regs = {}
self.printIp(all)
elif cmds[0] == "cont":
self.dbg.run()
if self.dbg.isAttached():
self.printIp(all=True)
elif cmds[0] == "bpt":
if len(cmds) == 1:
print self.dbg.getBreakpoints()
else:
addr = int(cmds[1], 16)
self.dbg.addBreakByAddr(addr)
elif cmds[0] == "pid":
print self.dbg.pid
else:
ret = False
return ret
def debugHelp(self):
print
print "Debugger commands:"
print
print "ps [str] Show process list (optionally filtered by str)"
print "attach Attach to a currently running program"
print "detach Detach from the currently attached program"
print "run [addr] Run the program (optionally up to addr)"
print "runhere Run until the current position"
print "stepi Step one instruction"
print "stepl Step over one loop"
print "cont Continue running the debugged program"
print "bpt addr Add a breakpoint"
print "regs Show registers"