Tracing instruction in lldb debugger. just a python-script for lldb.
- Break at an address where you want to begin tracing.
- Import lldb python script.
- Set an address where you want to end tracing.
- Use 'trace' command,and redirect log to file.
trace -e 0x111111 -l all -t ~/tracelog.txt -d ~/debuglog.txt
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TypeError: unsupported operand type(s) for -: 'int' and 'NoneType' File "/Users/incollagepro/lldb-trace/lldbTrace.py", line 409, in print_tracing_progress file_addr = mem_addr - ASLR
还有589 也是NoneType 需要加上 str(sym_name) self.append_msg = sym_name + self.append_msg
error: libarclite_iphoneos.a(arclite.o) failed to load objfile for /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/arc/libarclite_iphoneos.a │ PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace. │ Stack dump: │ 0. Program arguments: /Applications/Xcode.app/Contents/Developer/usr/bin/lldb 是什么原因呢？
def init_ASLR(debugger:lldb.SBDebugger):
global ASLR
interpreter:lldb.SBCommandInterpreter = debugger.GetCommandInterpreter()
returnObject = lldb.SBCommandReturnObject()
interpreter.HandleCommand('image list -o', returnObject)
output = returnObject.GetOutput()
match = re.match(r'.+(0x[0-9a-fA-F]+)', output)
if match:
ASLRHexStr:str = match.group(1)
ASLR = int(ASLRHexStr,16)
print('ALSR : {}'.format(ASLRHexStr))
return ASLRHexStr
else:
ASLR = '' ====> set 0
print('err : ALSR is None')
return None
如图所示，在.plt里的get_state函数的ldr pc指令之后应该是跳到.text段的get_state函数里才对。但是trace.log文件里缺没有.text段的内容。
我看debug.log文件里有这样的内容：
查看代码，它好像是认为.text段已经超出get_state()符号范围了，就没有记录了
有办法把.text段里get_state()真正的内容记录到trace.log里吗？
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