applicationlayer

출처:

ftp://ftp.oreilly.de/pub/examples/english_examples/9780735622142/cd_contents/MiniFuzz/LaunchExe.cpp

http://blog.naver.com/PostView.nhn?blogId=hks9999&logNo=30105498369

#include "stdafx.h"

#include "fuzz.h"

#include "log.h"

using namespace std;

// How long should the app run for us to consider the test a success (1.2secs)

const DWORD MAX_EXE_RUNTIME_MS  = 1200;

// log interesting info if we get a debug event back from the debugged app

bool ReportFailure(DEBUG_EVENT *pdbg, const char *szFilename) {

HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, FALSE, pdbg->dwThreadId);

if (!hThread) {

Log("OpenThread failed");

return false;

}

string sExc;

switch(pdbg->u.Exception.ExceptionRecord.ExceptionCode) {

case EXCEPTION_ACCESS_VIOLATION : sExc = "Access Violation"; break;

case EXCEPTION_STACK_OVERFLOW: sExc = "Stack Overflow"; break;

case EXCEPTION_DATATYPE_MISALIGNMENT: sExc = "Datatype misalignment"; break; 

case EXCEPTION_ARRAY_BOUNDS_EXCEEDED : sExc = "Array Bounds Exceeded"; break;

case EXCEPTION_FLT_DIVIDE_BY_ZERO: sExc = "Float Div/0"; break;

case EXCEPTION_INT_DIVIDE_BY_ZERO: sExc = "Int Div/0"; break;

case EXCEPTION_ILLEGAL_INSTRUCTION: sExc = "Illegal Instruction"; break;

case EXCEPTION_IN_PAGE_ERROR: sExc = "In-page error"; break;

case EXCEPTION_PRIV_INSTRUCTION: sExc = "Privileged Instruction";break;

default : sExc = "Unknown"; break;

}

CONTEXT ctx;

memset(&ctx,0,sizeof CONTEXT);

ctx.ContextFlags = CONTEXT_ALL;

if (!GetThreadContext(hThread, &ctx)) {

Log("GetThreadContext failed");

return false;

}

ReportFuzzError(szFilename,sExc,ctx);

return true;

}

// spawn the exe to fuzz

bool LaunchFile(const char *szDir, const char *szExe, const char *szFilename, bool *pfDeleteTempFile) {

if (pfDeleteTempFile == NULL && szDir == NULL || szExe == NULL || szFilename == NULL) {

Log("Invalid args to LaunchFile");

return false;

}

*pfDeleteTempFile = false;

bool fError = false;

PROCESS_INFORMATION pi;

    STARTUPINFO         si;

memset(&pi,0,sizeof PROCESS_INFORMATION);

memset(&si,0,sizeof STARTUPINFO);

si.cb = sizeof STARTUPINFO;

// build up the cmd-line

string sExe(szExe);

sExe.append(" ");

sExe.append(szFilename);

BOOL fRet = CreateProcess(NULL, 

const_cast<LPSTR>(sExe.c_str()), 

NULL, NULL,

FALSE,

DEBUG_ONLY_THIS_PROCESS,

NULL, NULL,

&si, &pi);

if (!fRet) {

Log("Unable to launch process", szExe, GetLastError());

return false;

}

DWORD dwStart = GetTickCount();

// Now wait for debug events from the new process

do {

DEBUG_EVENT  dbg;

if (WaitForDebugEvent(&dbg, 200)) {

// we get copies of all loaded DLL file handles - we don't need 'em - so close 'em

if (dbg.dwDebugEventCode == LOAD_DLL_DEBUG_EVENT) {

CloseHandle(dbg.u.LoadDll.hFile);

ContinueDebugEvent(dbg.dwProcessId, dbg.dwThreadId, DBG_CONTINUE);

continue;

}

// we get a copy of the loaded exe file handle - we don't need it - so close it

if (dbg.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT) {

CloseHandle(dbg.u.CreateProcessInfo.hFile);

ContinueDebugEvent(dbg.dwProcessId, dbg.dwThreadId, DBG_CONTINUE);

continue;

}

// at this point we only care about real debug events

if (dbg.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) {

ContinueDebugEvent(dbg.dwProcessId, dbg.dwThreadId, DBG_CONTINUE);

continue;

}

// An exception occured

// CAVEAT: this code can catch *ALL* exceptions, including first-chance exceptions.

// Catching and logging a first-chance exception does *NOT* mean there is a security bug

// in your code. Don't go filing bugs on first-chance exceptions unless it's a real bug!

switch (dbg.u.Exception.ExceptionRecord.ExceptionCode) {

case EXCEPTION_ACCESS_VIOLATION : 

case EXCEPTION_STACK_OVERFLOW:

case EXCEPTION_DATATYPE_MISALIGNMENT:

case EXCEPTION_ARRAY_BOUNDS_EXCEEDED :

case EXCEPTION_FLT_DIVIDE_BY_ZERO: 

case EXCEPTION_INT_DIVIDE_BY_ZERO:

case EXCEPTION_ILLEGAL_INSTRUCTION: 

case EXCEPTION_IN_PAGE_ERROR:

case EXCEPTION_PRIV_INSTRUCTION:

// DO NOT HANDLE FIRST CHANCE EXCEPTIONS!

// If you want to handle them, then change this code to:

// if (dbg.u.Exception.dwFirstChance) {

if (!dbg.u.Exception.dwFirstChance) {

ReportFailure(&dbg, szFilename);

fError = true;

}

break;

default:

ContinueDebugEvent(dbg.dwProcessId, dbg.dwThreadId, DBG_CONTINUE);

break;

}

} else {

break;

}

} while((GetTickCount() - dwStart) < MAX_EXE_RUNTIME_MS);

DebugActiveProcessStop(pi.dwProcessId);

if (!TerminateProcess(pi.hProcess,1)) 

Log("Unable to kill process", szExe, GetLastError());

if (pi.hThread)  

CloseHandle(pi.hThread);

if (pi.hProcess) 

CloseHandle(pi.hProcess);

if (pfDeleteTempFile && !fError)

*pfDeleteTempFile = true;

return fError;

}