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| 1 | +/* |
| 2 | +IDAPinLogger: |
| 3 | +Author: @_wirepair / isaac.dawson{}gmail.com. |
| 4 | +Keeps a hit count for every instruction executed in a specified module. |
| 5 | +If no module is specified, we use the main executable image. |
| 6 | +After the program finishes running, we write the buffer of hits out to a file which |
| 7 | +then needs to be imported into IDA Pro using dereko's (?) loadlog.py IDAPython sript. |
| 8 | +
|
| 9 | +I feel this method is a bit more simpiler then his (and i was having problems with |
| 10 | +certain exectuables). But who knows maybe I'm doing something wrong :). |
| 11 | +
|
| 12 | +How to build: |
| 13 | +Copy this project into your pin source directory: |
| 14 | +%pin%\source\tools\IDAPinLogger |
| 15 | +Open Visual Studio (2008) and build or run the makefile. |
| 16 | +
|
| 17 | +How to run: |
| 18 | +Log all hits in nc.exe module: |
| 19 | +c:\pin\pin.exe -t C:\pin\IDAPinLogger.dll -m nc.exe -- nc.exe -l -v -p 999 |
| 20 | +or (main exe assumed) |
| 21 | +c:\pin\pin.exe -t C:\pin\IDAPinLogger.dll -- nc.exe -l -v -p 999 |
| 22 | +
|
| 23 | +Log all hits in supporting module (note case sensitive!): |
| 24 | +c:\pin\pin.exe -t C:\pin\IDAPinLogger.dll -m KERNEL32.DLL -- nc.exe -l -v -p 999 |
| 25 | +*/ |
| 26 | +#include "pin.H" |
| 27 | +#include <iostream> |
| 28 | +#include <fstream> |
| 29 | + |
| 30 | +namespace WINDOWS { |
| 31 | +#include "Windows.h" |
| 32 | +} |
| 33 | +/* ================================================================== */ |
| 34 | +// Global variables |
| 35 | +/* ================================================================== */ |
| 36 | + |
| 37 | +std::ostream * out = &cerr; |
| 38 | +// Module Info |
| 39 | +ADDRINT moduleStart = 0; |
| 40 | +ADDRINT moduleEnd = 0; |
| 41 | +unsigned int moduleSize = 0; |
| 42 | +// Hit Count Variables. |
| 43 | +FILE *IDAInsLogFile; |
| 44 | +WINDOWS::BYTE *logBuffer; |
| 45 | + |
| 46 | +/* ===================================================================== */ |
| 47 | +// Command line switches |
| 48 | +/* ===================================================================== */ |
| 49 | +KNOB<string> KnobOutputFile(KNOB_MODE_WRITEONCE, "pintool", |
| 50 | + "o", "", "specify file name for IDAPinLogger output"); |
| 51 | +KNOB<string> KnobModuleToLog(KNOB_MODE_WRITEONCE, "pintool", |
| 52 | + "m", "", "specify the module to record instruction visits."); |
| 53 | + |
| 54 | +INT32 Usage() |
| 55 | +{ |
| 56 | + cerr << "This tool writes the number of times an instruction is called to a map file " << endl << |
| 57 | + "that can then be fed into IDA Pro to highlight which instructions were executed." << endl << endl; |
| 58 | + cerr << KNOB_BASE::StringKnobSummary() << endl; |
| 59 | + return -1; |
| 60 | +} |
| 61 | + |
| 62 | +/* ===================================================================== */ |
| 63 | +// Analysis routines |
| 64 | +/* ===================================================================== */ |
| 65 | +VOID IncrementCount(UINT32 eip) |
| 66 | +{ |
| 67 | + unsigned int idx = eip - moduleStart; |
| 68 | + // if we get called more than 255 times, well, stop. |
| 69 | + if (logBuffer[idx] >= 255) |
| 70 | + { |
| 71 | + return; |
| 72 | + } |
| 73 | + logBuffer[idx] += 1; |
| 74 | +} |
| 75 | + |
| 76 | +/* ===================================================================== */ |
| 77 | +// Instrumentation callbacks |
| 78 | +/* ===================================================================== */ |
| 79 | +VOID ImageLoad(IMG img, VOID *v) |
| 80 | +{ |
| 81 | + std::cerr << "Loading " << IMG_Name(img).c_str() << " Start " << hex << IMG_LowAddress(img) << " End " << IMG_HighAddress(img) << endl; |
| 82 | + // if no module passed, just use the main executable |
| 83 | + string module = KnobModuleToLog.Value(); |
| 84 | + if (module.empty() && IMG_IsMainExecutable( img ) ) |
| 85 | + { |
| 86 | + module = IMG_Name(img); |
| 87 | + } |
| 88 | + // keep in mind this is case sensitive... |
| 89 | + if (module.empty() || IMG_Name( img ).rfind( module.c_str() ) == string::npos) |
| 90 | + { |
| 91 | + return; |
| 92 | + } |
| 93 | + moduleStart = IMG_LowAddress(img); |
| 94 | + moduleEnd = IMG_HighAddress(img); |
| 95 | + moduleSize = moduleEnd - moduleStart; |
| 96 | + std::cerr << "Module size is: " << moduleSize << endl; |
| 97 | + logBuffer = (WINDOWS::BYTE *)calloc(moduleSize,sizeof(WINDOWS::BYTE)); |
| 98 | + if (logBuffer == NULL) |
| 99 | + { |
| 100 | + std::cerr << "Unable to allocate enough heapspace, how friggen big is this module?" << endl; |
| 101 | + return; |
| 102 | + } |
| 103 | + std::cerr << "Creating hit count for instructions in module: " << IMG_Name(img).c_str() << endl; |
| 104 | + |
| 105 | +} |
| 106 | + |
| 107 | +VOID Instruction(INS ins, VOID *v) |
| 108 | +{ |
| 109 | + ADDRINT loc = INS_Address(ins); |
| 110 | + if (loc >= moduleStart && loc <= moduleEnd) |
| 111 | + { |
| 112 | + INS_InsertCall(ins, |
| 113 | + IPOINT_BEFORE, |
| 114 | + (AFUNPTR)IncrementCount, |
| 115 | + IARG_INST_PTR, |
| 116 | + IARG_END); |
| 117 | + } |
| 118 | +} |
| 119 | + |
| 120 | + |
| 121 | +VOID Fini(INT32 code, VOID *v) |
| 122 | +{ |
| 123 | + std::cerr << "Writing instruction hits to disk." << endl; |
| 124 | + fwrite(logBuffer, sizeof(WINDOWS::BYTE), moduleSize, IDAInsLogFile); |
| 125 | + fflush(IDAInsLogFile); |
| 126 | + fclose(IDAInsLogFile); |
| 127 | + free(logBuffer); |
| 128 | +} |
| 129 | + |
| 130 | +int main(int argc, char *argv[]) |
| 131 | +{ |
| 132 | + if( PIN_Init(argc,argv) ) |
| 133 | + { |
| 134 | + return Usage(); |
| 135 | + } |
| 136 | + |
| 137 | + string fileName = KnobOutputFile.Value(); |
| 138 | + if (!fileName.empty()) |
| 139 | + { |
| 140 | + IDAInsLogFile = fopen(fileName.c_str(), "wb+"); |
| 141 | + } |
| 142 | + else |
| 143 | + { |
| 144 | + std::cerr << "Need an outfile file dingus." << endl; |
| 145 | + return -1; |
| 146 | + } |
| 147 | + |
| 148 | + IMG_AddInstrumentFunction(ImageLoad, 0); |
| 149 | + INS_AddInstrumentFunction(Instruction, 0); |
| 150 | + PIN_AddFiniFunction(Fini, 0); |
| 151 | + // Start the program, never returns |
| 152 | + PIN_StartProgram(); |
| 153 | + |
| 154 | + return 0; |
| 155 | +} |
| 156 | + |
| 157 | +/* ===================================================================== */ |
| 158 | +/* eof */ |
| 159 | +/* ===================================================================== */ |
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