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TaintAnalyse.cpp
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#include <iostream>
#include <fstream>
#include "pin.H"
#include "z3++.h"
#include <cassert>
#include <iostream>
#include <fstream>
#include <sstream>
#include <stack>
#include <vector>
#include <map>
#include <set>
#include <cstring>
#include <stdint.h>
#include <time.h>
#include <list>
#include <string>
//#include<capstone.h>
#include<algorithm>
#include "disasmble.h"
//#include<X86Disasm.hh>
#pragma warning( push )
#pragma warning( disable : 4551 )
#pragma warning( disable : 4700 )
#pragma warning( disable : 4715 )
std::list< std::pair<UINT64, std::string> > constraintList;
z3::context *z3Context;
z3::expr *z3Var;
z3::solver *z3solver;
z3::expr *z3Equation;
z3::model *z3Model;
static char goodSerial[32] = { 0 };
static unsigned int offsetSerial;
#define ID_EAX 0
#define ID_EBX 1
#define ID_ECX 2
#define ID_EDX 3
#define ID_EDI 4
#define ID_ESI 5
static UINT32 regID[] =
{
-1,/*ID_RAX*/
-1,/*ID_RBX*/
-1,/*ID_RCX*/
-1,/*ID_RDX*/
-1,/*ID_RDI*/
-1/*ID_RSI*/
};
UINT32 getRegID(REG reg)
{
switch (reg)
{
case REG_EAX:
case REG_AX:
case REG_AH:
case REG_AL:
return regID[ID_EAX];
case REG_EBX:
case REG_BX:
case REG_BH:
case REG_BL:
return regID[ID_EBX];
case REG_ECX:
case REG_CX:
case REG_CH:
case REG_CL:
return regID[ID_ECX];
case REG_EDX:
case REG_DX:
case REG_DH:
case REG_DL:
return regID[ID_EDX];
//case REG_RDI:
case REG_EDI:
case REG_DI:
//case REG_DL:
return regID[ID_EDI];
//case REG_RSI:
case REG_ESI:
case REG_SI:
//case REG_SH:
//case REG_SL:
return regID[ID_ESI];
default:
return -1;
}
}
VOID setRegID(REG reg, UINT64 id)
{
switch (reg) {
//case REG_RAX:
case REG_EAX:
case REG_AX:
case REG_AH:
case REG_AL:
regID[ID_EAX] = id;
break;
// case REG_RBX:
case REG_EBX:
case REG_BX:
case REG_BH:
case REG_BL:
regID[ID_EBX] = id;
break;
//case REG_ECX:
case REG_ECX:
case REG_CX:
case REG_CH:
case REG_CL:
regID[ID_ECX] = id;
break;
//case REG_RDX:
case REG_EDX:
case REG_DX:
case REG_DH:
case REG_DL:
regID[ID_EDX] = id;
break;
//case REG_RDI:
case REG_EDI:
case REG_DI:
//case REG_DIL:
regID[ID_EDI] = id;
break;
//case REG_RSI:
case REG_ESI:
case REG_SI:
//case REG_SIL:
regID[ID_ESI] = id;
break;
default:
break;
}
}
REG getHighReg(REG reg)
{
switch (reg) {
//case REG_RAX:
case REG_EAX:
case REG_AX:
case REG_AH:
case REG_AL:
return REG_EAX;
//case REG_RBX:
case REG_EBX:
case REG_BX:
case REG_BH:
case REG_BL:
return REG_EBX;
//case REG_RCX:
case REG_ECX:
case REG_CX:
case REG_CH:
case REG_CL:
return REG_ECX;
//case REG_RDX:
case REG_EDX:
case REG_DX:
case REG_DH:
case REG_DL:
return REG_EDX;
//case REG_RDI:
case REG_EDI:
case REG_DI:
//case REG_DIL:
return REG_EDI;
//case REG_RSI:
case REG_ESI:
case REG_SI:
//case REG_SIL:
return REG_ESI;
default:
return REG_AL; /* hack exception */
}
}
FILE *fp = NULL;
//extern "C"
//{
//#include "libvex.h"
//}
//#include "vexmem.h"
//#include "vexir.cpp"
#ifdef _WIN32
//const char* const windowsDll = "kernel32.dll";
//const char* const wsDll = "WS2_32.dll";
//const int callbackNum = 5;
//const unsigned int accessViolation = 0xc0000005;
namespace WINDOWS
{
#include "Winsock2.h"
#include "Windows.h"
}
#endif
typedef WINDOWS::HANDLE HANDLE;
typedef int DWORD;
typedef WINDOWS::LPCTSTR LPCTSTR;
typedef const VOID *LPCVOID;
KNOB<uint32_t> TaintStart(KNOB_MODE_WRITEONCE, "pintool", "taint-start", "0x0", "All logged instructions will have higher addresses");
KNOB<uint32_t> TaintEnd(KNOB_MODE_WRITEONCE, "pintool", "taint-end", "0xffffffff", "All logged instructions will have lower addresses");
KNOB<bool> LogAsm(KNOB_MODE_WRITEONCE, "pintool", "ll", "false", "generate asm ll");
KNOB<bool> LogVexir(KNOB_MODE_WRITEONCE, "pintool", "vexir", "false", "generate vex ir");
KNOB<string> InputFile(KNOB_MODE_WRITEONCE, "pintool", "input", "", "specify a new input file");
KNOB<string> TaintFile(KNOB_MODE_WRITEONCE, "pintool", "taint-file", "", "specify a taint file");
// This function is called before every instruction is executed
struct range
{
UINT32 start;
UINT32 end;
};
struct Inst
{
ADDRINT key;
string inst;
};
UINT64 ST1 = 0;
UINT64 ST2 = 0;
/************************************************************************/
/* global variable */
/************************************************************************/
ofstream LlOutFile;
ofstream sfFile;
//std::map<ADDRINT, RegFrame*>rfs;
WINDOWS::HANDLE g_inputfileHandle = (WINDOWS::HANDLE) - 1;
std::map<HANDLE, string>taintfiles;
std::map<HANDLE, HANDLE>mapfiles; //first handle is mapview handle, second is file handle
std::map<LPCVOID, HANDLE>views;
std::string g_taintfile;
HANDLE g_tainfilehandle = (HANDLE)-1;
std::list<struct range>g_bytesTainted;
//std::list<struct Inst>g_InstList;
std::map<ADDRINT,string>g_InstList;
//这个地方存放被污染过的地址
std::list<UINT32>addressTainted;
//这里存放被污染的寄存器。
std::list<REG>regsTainted;
uint32_t g_memreadptr = 0;
uint32_t g_memwriteptr = 0;
BOOL g_branchistaken = FALSE;
BOOL g_blogvexir = FALSE;
void Instruction(INS ins,VOID *v);
/*
BOOL UnmapViewOfFile(
LPCVOID lpBaseAddress // address where mapped view begins
);
*/
BOOL UnmapViewOfFileWrapper(CONTEXT *ctx, AFUNPTR fp, THREADID tid, LPCVOID lpBaseAddress)
{
BOOL ret;
PIN_CallApplicationFunction(ctx, tid, CALLINGSTD_STDCALL, fp,
PIN_PARG(BOOL), &ret,
PIN_PARG(LPCVOID), lpBaseAddress,
PIN_PARG_END());
views.erase(lpBaseAddress);
return ret;
}
/*
在链表中收索查找指令。
*/
void SearchInst(std::map<ADDRINT,string> g_inst,string & inst,ADDRINT address)
{
//string inst;
list<struct Inst>::iterator j;
std::map<ADDRINT, string>::iterator iter;;
iter = g_InstList.find(address);
if (iter != g_InstList.end())
//表示找到
inst = iter->second;
//if (g_inst.find(address) != g_inst.end())
//{
//表示找到内容提供
//}
/*for (j = g_inst.begin(); j != g_inst.end(); j++)
{
if (j->key == address)
{
inst = j->inst;
break;
}
}*/
}
/*
HANDLE CreateFileMapping(
HANDLE hFile, // handle to file to map
LPSECURITY_ATTRIBUTES lpFileMappingAttributes,
// optional security attributes
DWORD flProtect, // protection for mapping object
DWORD dwMaximumSizeHigh, // high-order 32 bits of object size
DWORD dwMaximumSizeLow, // low-order 32 bits of object size
LPCTSTR lpName // name of file-mapping object
);
*/
HANDLE CreateFileMappingWrapper(CONTEXT *ctx, AFUNPTR fp, THREADID tid,
HANDLE hFile, // handle to file to map
WINDOWS::LPSECURITY_ATTRIBUTES lpFileMappingAttributes,
// optional security attributes
DWORD flProtect, // protection for mapping object
DWORD dwMaximumSizeHigh, // high-order 32 bits of object size
DWORD dwMaximumSizeLow, // low-order 32 bits of object size
LPCTSTR lpName // name of file-mapping object
)
{
HANDLE ret;
PIN_CallApplicationFunction(ctx, tid, CALLINGSTD_STDCALL, fp,
PIN_PARG(HANDLE), &ret,
PIN_PARG(HANDLE), hFile,
PIN_PARG(WINDOWS::LPSECURITY_ATTRIBUTES), lpFileMappingAttributes,
PIN_PARG(DWORD), flProtect,
PIN_PARG(DWORD), dwMaximumSizeHigh,
PIN_PARG(DWORD), dwMaximumSizeLow,
PIN_PARG(LPCTSTR), lpName,
PIN_PARG_END());
if (taintfiles.find(hFile) != taintfiles.end())
{
mapfiles.insert(pair<HANDLE, HANDLE>(ret, hFile));
}
return ret;
}
/*
BOOL CloseHandle(
HANDLE hObject // handle to object to close
);
*/
BOOL CloseHandleWrapper(CONTEXT *ctx, AFUNPTR fp, THREADID tid,
HANDLE hObject)
{
BOOL ret;
//z这个地方添加相关注释。
if (hObject == g_inputfileHandle)
{
cerr << "[+] Close Input File..." << endl;
g_inputfileHandle = (HANDLE)-1;
}
if (hObject == g_tainfilehandle)
{
cerr << "[+] Close Taint File..." << endl;
g_tainfilehandle = (HANDLE)-1;
}
taintfiles.erase(hObject);
mapfiles.erase(hObject);
PIN_CallApplicationFunction(ctx, tid, CALLINGSTD_STDCALL, fp,
PIN_PARG(BOOL), &ret,
PIN_PARG(HANDLE), hObject,
PIN_PARG_END());
return ret;
}
/*
LPVOID MapViewOfFile(
HANDLE hFileMappingObject, // file-mapping object to map into
// address space
DWORD dwDesiredAccess, // access mode
DWORD dwFileOffsetHigh, // high-order 32 bits of file offset
DWORD dwFileOffsetLow, // low-order 32 bits of file offset
DWORD dwNumberOfBytesToMap // number of bytes to map
);
*/
void* MapViewOfFileWrapper(CONTEXT *ctx, AFUNPTR fp, THREADID tid,
HANDLE hFileMappingObject,
DWORD dwDesiredAccess,
DWORD dwFileOffsetHigh,
DWORD dwFileOffsetLow,
DWORD dwNumberOfBytesToMap)
{
void* ret;
//cerr<<"[WARN] Enter MapViewOfFileWrapper..."<<endl;
PIN_CallApplicationFunction(ctx, tid, CALLINGSTD_STDCALL, fp,
PIN_PARG(void*), &ret,
PIN_PARG(HANDLE), hFileMappingObject,
PIN_PARG(DWORD), dwDesiredAccess,
PIN_PARG(DWORD), dwFileOffsetHigh,
PIN_PARG(DWORD), dwFileOffsetLow,
PIN_PARG(DWORD), dwNumberOfBytesToMap,
PIN_PARG_END());
if (mapfiles.find(hFileMappingObject) != mapfiles.end())
{
for (int i = 0; i < dwNumberOfBytesToMap; i++)
{
printf("[+]map byte (%d) : %02x from 0x%08x \n", i, *((char*)((char*)ret + i)), (uint32_t)ret + i);
//uint32_t j = add_dependency_addr((uint32_t)ret + i, 8);
//_snprintf(depaddr8[j].cons, XXX_MAX_BUF, "input(%d)", (uint32_t)dwFileOffsetLow + i);
}
}
views.insert(pair<LPCVOID, HANDLE>((LPCVOID)ret, hFileMappingObject));
return ret;
}
/*
HANDLE CreateFile(
LPCTSTR lpFileName, // pointer to name of the file
DWORD dwDesiredAccess, // access (read-write) mode
DWORD dwShareMode, // share mode
LPSECURITY_ATTRIBUTES lpSecurityAttributes,
// pointer to security attributes
DWORD dwCreationDisposition, // how to create
DWORD dwFlagsAndAttributes, // file attributes
HANDLE hTemplateFile // handle to file with attributes to
// copy
);
*/
std::string& to_string(std::string& dest, std::wstring const & src)
{
setlocale(LC_CTYPE, "");
//get src's size
size_t const mbs_len = wcstombs(NULL, src.c_str(), 0);
std::vector<char> tmp(mbs_len + 1);
wcstombs(&tmp[0], src.c_str(), tmp.size());
dest.assign(tmp.begin(), tmp.end() - 1);
return dest;
}
WINDOWS::HANDLE CreateFileWWrapper(CONTEXT *ctx, AFUNPTR fp, THREADID tid,
wchar_t* lpFileName,
DWORD dwDesiredAccess,
DWORD dwShareMode,
WINDOWS::LPSECURITY_ATTRIBUTES lpSecurityAttributes,
DWORD dwCreationDisposition,
DWORD dwFlagsAndAttributes,
HANDLE hTemplateFile)
{
HANDLE ret;
PIN_CallApplicationFunction(ctx, tid, CALLINGSTD_STDCALL, fp,
PIN_PARG(HANDLE), &ret,
PIN_PARG(wchar_t*), lpFileName,
PIN_PARG(DWORD), dwDesiredAccess,
PIN_PARG(DWORD), dwShareMode,
PIN_PARG(WINDOWS::LPSECURITY_ATTRIBUTES), lpSecurityAttributes,
PIN_PARG(DWORD), dwCreationDisposition,
PIN_PARG(DWORD), dwFlagsAndAttributes,
PIN_PARG(HANDLE), hTemplateFile,
PIN_PARG_END());
std::wstring filename = lpFileName;
std::string filenameA;
filenameA = to_string(filenameA, filename);
// taintfiles.insert(std::pair<HANDLE, string>(ret, filenameA));
cerr << "[+] Create File(UNICODE) Name : " << filenameA << endl;
string k = filenameA.substr(filenameA.rfind('\\')+1);
if (filenameA.substr(filenameA.rfind('\\')+1) == g_taintfile)
{
cerr << "[+] Taint File Is Created..." << endl;
taintfiles.insert(std::pair<HANDLE, string>(ret, filenameA));
g_tainfilehandle = ret;
}
return ret;
}
WINDOWS::HANDLE CreateFileAWrapper(CONTEXT *ctx, AFUNPTR fp, THREADID tid,
WINDOWS::LPCTSTR lpFileName,
DWORD dwDesiredAccess,
DWORD dwShareMode,
WINDOWS::LPSECURITY_ATTRIBUTES lpSecurityAttributes,
DWORD dwCreationDisposition,
DWORD dwFlagsAndAttributes,
HANDLE hTemplateFile)
{
HANDLE ret;
PIN_CallApplicationFunction(ctx, tid, CALLINGSTD_STDCALL, fp,
PIN_PARG(HANDLE), &ret,
PIN_PARG(LPCTSTR), lpFileName,
PIN_PARG(DWORD), dwDesiredAccess,
PIN_PARG(DWORD), dwShareMode,
PIN_PARG(WINDOWS::LPSECURITY_ATTRIBUTES), lpSecurityAttributes,
PIN_PARG(DWORD), dwCreationDisposition,
PIN_PARG(DWORD), dwFlagsAndAttributes,
PIN_PARG(HANDLE), hTemplateFile,
PIN_PARG_END());
std::string filename = lpFileName;
//taintfiles.insert(std::pair<HANDLE, string>(ret, filename));
cerr << "[+] Create File (ANSI) Name : " << filename << endl;
printf(" * CreateFile : %s\n\t\tHandle:%x\n\n", filename.c_str(), ret);
if (filename == g_taintfile)//被多次打开了，所以要注意跟踪。
{
printf(" * Taint File is Created...\n\n");
cerr << "[+] Taint File Is Created..." << endl;
taintfiles.insert(std::pair<HANDLE, string>(ret, filename));
g_tainfilehandle = ret;
}
return ret;
}
/* ReadFile Protocol
BOOL ReadFile(
HANDLE hFile, // handle of file to read
LPVOID lpBuffer, // pointer to buffer that receives data
DWORD nNumberOfBytesToRead, // number of bytes to read
LPDWORD lpNumberOfBytesRead, // pointer to number of bytes read
LPOVERLAPPED lpOverlapped // pointer to structure for data
);
*/
BOOL ReadFileWrapper(CONTEXT *ctx, AFUNPTR fp, THREADID tid, WINDOWS::HANDLE hFile, void* lpBuffer, int nNumberOfBytesToRead, int* lpNumberOfBytesRead, WINDOWS::LPOVERLAPPED lpOverlapped)
{
BOOL ret;
#define GetFilePointer(hFile) WINDOWS::SetFilePointer(hFile, 0, NULL, FILE_CURRENT)
BOOL IsTaintFile = FALSE;
uint32_t cur_pointer = 0;
printf(" * ReadFile : %x\n\n", hFile);
if (taintfiles.find(hFile) != taintfiles.end())
{
IsTaintFile = TRUE;
if (g_inputfileHandle != (WINDOWS::HANDLE) - 1)
{
WINDOWS::CloseHandle(hFile);
hFile = g_inputfileHandle;
}
cur_pointer = GetFilePointer(hFile);//设置到初始位置。
}
PIN_CallApplicationFunction(ctx, tid,
CALLINGSTD_STDCALL, fp,
PIN_PARG(BOOL), &ret,
PIN_PARG(HANDLE), hFile,
PIN_PARG(void*), lpBuffer,
PIN_PARG(int), nNumberOfBytesToRead,
PIN_PARG(int*), lpNumberOfBytesRead,
PIN_PARG(WINDOWS::LPOVERLAPPED), lpOverlapped,
PIN_PARG_END());
//这里添加输入点
//从lpbuffer开始，读了多少个字节，都设置为污点
if (IsTaintFile)//这里面来进行处理。
{
//struct range taint;
//首先获取到相应的污染源的大小
//taint.start = (UINT32)((char *)lpBuffer);
//taint.end = (UINT32)(taint.start) + *lpNumberOfBytesRead;
//g_bytesTainted.push_back(taint);
//printf("Traint Area from：%08x to %08x\n", taint.start, taint.end);
for (UINT32 i = 0; i < *lpNumberOfBytesRead; i++)
{
addressTainted.push_back((UINT32)((char *)lpBuffer + i));
}
std::cout << "[TAINT]\t\t\tbytes tainted from " << std::hex << "0x" << lpBuffer << " to 0x" << (UINT32 )lpBuffer + *lpNumberOfBytesRead << " (via read)" << std::endl;
/*******************************
for (int i = 0; i < nNumberOfBytesToRead; i++)
{
printf("[+]read byte (%d) : %02x from 0x%08x \n", i, *((char*)((char*)lpBuffer + i)), (uint32_t)lpBuffer + i);
//uint32_t j = add_dependency_addr((uint32_t)lpBuffer + i, 8);
//_snprintf(depaddr8[j].cons, XXX_MAX_BUF, "input(%d)", (uint32_t)cur_pointer + i);
}
*****/
}
return ret;
}
//检测是否被污染过的数据。
bool checkAlreadyRegTainted(REG reg)
{
list<REG>::iterator i;
for (i = regsTainted.begin(); i != regsTainted.end(); i++) {
if (*i == reg) {
return true;
}
}
return false;
}
bool taintReg(REG reg)
{
if (checkAlreadyRegTainted(reg) == true) {
std::cout << "\t\t\t" << REG_StringShort(reg) << " is already tainted" << std::endl;
return false;
}
switch (reg) {
//case REG_EAX: regsTainted.push_front(REG_RAX);
case REG_EAX: regsTainted.push_front(REG_EAX);
case REG_AX: regsTainted.push_front(REG_AX);
case REG_AH: regsTainted.push_front(REG_AH);
case REG_AL: regsTainted.push_front(REG_AL);
break;
//case REG_RBX: regsTainted.push_front(REG_RBX);
case REG_EBX: regsTainted.push_front(REG_EBX);
case REG_BX: regsTainted.push_front(REG_BX);
case REG_BH: regsTainted.push_front(REG_BH);
case REG_BL: regsTainted.push_front(REG_BL);
break;
//case REG_RCX: regsTainted.push_front(REG_RCX);
case REG_ECX: regsTainted.push_front(REG_ECX);
case REG_CX: regsTainted.push_front(REG_CX);
case REG_CH: regsTainted.push_front(REG_CH);
case REG_CL: regsTainted.push_front(REG_CL);
break;
//case REG_RDX: regsTainted.push_front(REG_RDX);
case REG_EDX: regsTainted.push_front(REG_EDX);
case REG_DX: regsTainted.push_front(REG_DX);
case REG_DH: regsTainted.push_front(REG_DH);
case REG_DL: regsTainted.push_front(REG_DL);
break;
//case REG_RDI: regsTainted.push_front(REG_RDI);
case REG_EDI: regsTainted.push_front(REG_EDI);
case REG_DI: regsTainted.push_front(REG_DI);
//case REG_DL: regsTainted.push_front(REG_DIL);
break;
//case REG_RSI: regsTainted.push_front(REG_RSI);
case REG_ESI: regsTainted.push_front(REG_ESI);
case REG_SI: regsTainted.push_front(REG_SI);
//case REG_SL: regsTainted.push_front(REG_SIL);
break;
default:
std::cout << "\t\t\t" << REG_StringShort(reg) << " can't be tainted" << std::endl;
return false;
}
std::cout << "\t\t\t" << REG_StringShort(reg) << " is now tainted" << std::endl;
return true;
}
//移除寄存器的污染值
bool removeRegTainted(REG reg)
{
switch (reg) {
//case REG_RAX: regsTainted.remove(REG_RAX);
case REG_EAX: regsTainted.remove(REG_EAX);
case REG_AX: regsTainted.remove(REG_AX);
case REG_AH: regsTainted.remove(REG_AH);
case REG_AL: regsTainted.remove(REG_AL);
break;
//case REG_RBX: regsTainted.remove(REG_RBX);
case REG_EBX: regsTainted.remove(REG_EBX);
case REG_BX: regsTainted.remove(REG_BX);
case REG_BH: regsTainted.remove(REG_BH);
case REG_BL: regsTainted.remove(REG_BL);
break;
//case REG_RCX: regsTainted.remove(REG_RCX);
case REG_ECX: regsTainted.remove(REG_ECX);
case REG_CX: regsTainted.remove(REG_CX);
case REG_CH: regsTainted.remove(REG_CH);
case REG_CL: regsTainted.remove(REG_CL);
break;
//case REG_RDX: regsTainted.remove(REG_RDX);
case REG_EDX: regsTainted.remove(REG_EDX);
case REG_DX: regsTainted.remove(REG_DX);
case REG_DH: regsTainted.remove(REG_DH);
case REG_DL: regsTainted.remove(REG_DL);
break;
//case REG_RDI: regsTainted.remove(REG_RDI);
case REG_EDI: regsTainted.remove(REG_EDI);
case REG_DI: regsTainted.remove(REG_DI);
//case REG_DIL: regsTainted.remove(REG_DIL);
break;
//case REG_RSI: regsTainted.remove(REG_RSI);
case REG_ESI: regsTainted.remove(REG_ESI);
case REG_SI: regsTainted.remove(REG_SI);
//case REG_SIL: regsTainted.remove(REG_SIL);
break;
default:
return false;
}
std::cout << "\t\t\t" << REG_StringShort(reg) << " is now freed" << std::endl;
return true;
}
VOID removeMemTainted(UINT32 addr)
{
//list<UINT32>::iterator kz;
addressTainted.remove(addr);
std::cout << std::hex << "\t\t\t" << addr << " is now freed" << std::endl;
}
VOID addMemTainted(UINT32 addr)
{
addressTainted.push_back(addr);
std::cout << std::hex << "\t\t\t" << addr << " is now tainted" << std::endl;
}
//进行污染传播的数据
void ReadMem(ADDRINT address, std::string &Inst,REG reg_0,UINT32 OperandCount,UINT32 memop,UINT32 memorySize)
{
list<UINT32>::iterator k;
list<struct range>::iterator i;
list<struct Inst>::iterator j;
UINT32 addr = memop;
string inst;
REG reg_r;
if (OperandCount != 2)
return;
reg_r = reg_0;
for (k = addressTainted.begin(); k != addressTainted.end(); k++)
{
if (addr == *k)
{
std::cout << std::hex << "[READ in " << addr << "]\t" << address<< ": " << Inst << std::endl;
taintReg(reg_r);
return;
}
}
if (checkAlreadyRegTainted(reg_r)) {
std::cout << std::hex << "[READ in " << addr << "]\t" <<address << ": " << Inst << std::endl;
removeRegTainted(reg_r);
}
}
//如果涉及到内存写操作，则需要关注内存的写的内容。
//void WriteMem(INS ins, UINT32 memop)
void WriteMem(ADDRINT insaddr, std::string &Inst,UINT32 opCount,REG reg_r,UINT32 memory1,UINT32 memorySize)
{
//这个地方的写内存操作要注意。
list<struct range>::iterator i;
list<struct Inst>::iterator j;
string inst;
UINT32 addr = memory1;
//UINT32 TaintLength=0;
//REG reg_r;
list<UINT32>::iterator k;
/************
if (opCount != 2)
return;
***************/
//需要考虑两种情况，分别是通过寄存器向内存写入值，或者直接写入数据到内存中。
//这时第一中情况。
//还需要分别考虑
for (unsigned int i = 0; i < memorySize; i++)
{
//if(k=addressTainted.)
k=find(addressTainted.begin(), addressTainted.end(), (addr+i));
//判断元素是否找到
if (k != addressTainted.end())
{
//找到元素，开始进一步操作
//SearchInst(g_InstList, inst, insaddr);
std::cout << std::hex << "[WRITE in " << (addr+i) << "]\t" << insaddr << ": " << Inst << std::endl;
if (!REG_valid(reg_r) || (!checkAlreadyRegTainted(reg_r)))
{
//针对两种情况，要么包含有寄存器，要么不包含寄存器
removeMemTainted(addr+i);
}
}
else
{
//没有找到元素，表示没有被污染，这时需要判断寄存器是否被污染
if (checkAlreadyRegTainted(reg_r))
{
//SearchInst(g_InstList, inst, insaddr);
std::cout << std::hex << "[WRITE in " << addr+i << "]\t" << insaddr << ": " << Inst << std::endl;
addMemTainted(addr+i);
}
}
}
}
VOID spreadRegTaint(ADDRINT address, std::string &Inst,UINT32 opCount,REG reg_r,REG reg_w)
{
//寄存器只有寄存器是目标寄存器时候才能够被污染，否需要被考虑。
if (opCount != 2)
return;
list<struct Inst>::iterator j;
string k1 = REG_StringShort(reg_r);
string k2 = REG_StringShort(reg_w);
//如果目标寄存器是已经被污染过得，并且写入寄存器未被污染，则需要将该寄存器进行进一步的污染。
if (REG_valid(reg_w)) {
if (checkAlreadyRegTainted(reg_w) && (!REG_valid(reg_r) || !checkAlreadyRegTainted(reg_r))) {
//SearchInst(g_InstList, inst, address);
std::cout << "[SPREAD]\t\t" << address << ": " << Inst << std::endl;
std::cout << "\t\t\toutput: " << REG_StringShort(reg_w) << " | input: " << (REG_valid(reg_r) ? REG_StringShort(reg_r) : "constant") << std::endl;
removeRegTainted(reg_w);
}
else if (!checkAlreadyRegTainted(reg_w) && checkAlreadyRegTainted(reg_r)) {
//SearchInst(g_InstList, inst, address);
std::cout << "[SPREAD]\t\t" << address << ": " << Inst << std::endl;
std::cout << "\t\t\toutput: " << REG_StringShort(reg_w) << " | input: " << REG_StringShort(reg_r) << std::endl;
taintReg(reg_w);
}
}
}
//跟踪使用污点的指令，将这些指令打印出来
void followData(ADDRINT address, std::string &Inst,REG reg)
{
string inst;
list<struct Inst>::iterator j;
if (!REG_valid(reg))
return;
if (checkAlreadyRegTainted(reg))
{
std::cout << "[FOLLOW]\t\t" << address << ":"<< Inst << std::endl;
}
}
void MemoryMove(ADDRINT insaddr, std::string &Inst,UINT32 opCount, REG reg_r, UINT32 memory1,UINT32 memory2, UINT32 memorySize)
{
//总共对这种指令的漏洞进行操作
string inst;
list<UINT32>::iterator k;
list<struct Inst>::iterator j;
//首先检查源地址，是否被污染，如果是则应该将目的地址进行污染。
for (unsigned int i = 0; i < memorySize; i++)
{
//首选判断源是否被污染，如果是则直接将目标进行污染
k = find(addressTainted.begin(), addressTainted.end(), (memory2+i));
//判断元素是否找到
if (k != addressTainted.end())
{
//找到元素，表示源被污染，直接将目的地址进行污染
SearchInst(g_InstList, inst, insaddr);
addMemTainted(memory1+i);
std::cout << std::hex << "[WRITE in " << memory1+i << "]\t" << insaddr << ": " << inst << std::endl;
}
else
{
//如果没有找到，则需要判断源是否被污染，如果被污染，则相应的要移除掉源内存。
k = find(addressTainted.begin(), addressTainted.end(), (memory1+i));
if (k != addressTainted.end())
{
//表示找到，则需要去除。
std::cout << std::hex << "[Write in " << (memory1 + i) << "]\t" << insaddr << ": " << inst << std::endl;
removeMemTainted(memory1+i);
}
}
}
//首先检查院地址是否被污染，然后再检测目的地址是否被污染。
//if (checkAlreadyRegTainted(reg))
//{
/* for (j = g_InstList.begin(); j != g_InstList.end(); j++)
{
if (j->key == address)
{
inst = j->inst;
}
}*/
//SearchInst(g_InstList, inst, insaddr);
//std::cout << "[FOLLOW]\t\t" << insaddr << ":" << inst << std::endl;
//}
}
//进行污点传播的分析
void Instruction(INS ins,VOID *v)
{
Inst instdis;
std::map<ADDRINT, string>mapInst;
ADDRINT insAddress = INS_Address(ins);
UINT32 insSize = INS_Size(ins);
/******************
//int ret2 = instdis.inst.compare("rep stosd dword ptr [edi]");
//if (ret2 == 0 && insAddress<0x70000000)
//{
// int yyk=0;
//}
//int ret3 = instdis.inst.compare("rep movsd dword ptr [edi], dword ptr [esi]");
//if (ret3 == 0 && insAddress<0x70000000)
//{
// temp = 1;
//}
*******************/
if (INS_OperandCount(ins)>1 && INS_MemoryOperandIsRead(ins, 0) && INS_OperandIsReg(ins, 0))
{
//这个地方将数据存放起来。
//g_InstList.insert(pair<ADDRINT, string>(insAddress, INS_Disassemble(ins)));
INS_InsertCall(
ins, IPOINT_BEFORE, (AFUNPTR)ReadMem,
IARG_ADDRINT,INS_Address(ins),
IARG_PTR,new std::string(INS_Disassemble(ins)),