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GleeBug
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Merge 98ff237193 into 9cc0b8c756

This commit is contained in:
Duncan Ogilvie 2017-02-24 17:26:13 +00:00 committed by GitHub
parent 9cc0b8c756 98ff237193
commit 57b9c6b543
24 changed files with 1293 additions and 188 deletions
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11
.editorconfig Normal file
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@ -0,0 +1,11 @@
; Top-most EditorConfig file
root = true
; Windows-style newlines
[*]
end_of_line = CRLF
; Tab indentation
[*.{cpp,h}]
indent_style = space
tab_width = 4

3
.gitignore vendored
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@ -6,4 +6,5 @@ Release/
*.orig
*.vcxproj.user
docs/
.vs/
.vs/
*.VC.db

20
GleeBug/Debugger.Breakpoint.h
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@ -44,9 +44,10 @@ namespace GleeBug
enum class MemoryType
{
Acess,
Write,
Execute
Access = 1,
Read = 2,
Write = 4,
Execute = 8
};
/**
@ -68,6 +69,7 @@ namespace GleeBug
HardwareSlot slot;
HardwareType type;
HardwareSize size;
bool enabled;
} hardware;
struct
{
@ -83,11 +85,21 @@ namespace GleeBug
struct BreakpointInfo
{
ptr address;
bool enabled;
bool singleshoot;
BreakpointType type;
BreakpointInternalInfo internal;
};
/**
\brief Structure for memory breakpoint management.
*/
struct MemoryBreakpointData
{
uint32 Refcount;
uint32 Type;
DWORD OldProtect;
DWORD NewProtect;
};
};
#endif //DEBUGGER_BREAKPOINT_H

5
GleeBug/Debugger.Global.h
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@ -5,6 +5,7 @@
//defines
#define GLEEBUG_HWBP_COUNT 4
#define GLEEBUG_PAGE_SIZE 0x1000
namespace GleeBug
{
@ -15,9 +16,11 @@ namespace GleeBug
class Thread;
enum class BreakpointType;
struct BreakpointInfo;
struct MemoryBreakpointData;
//constants
const int HWBP_COUNT = GLEEBUG_HWBP_COUNT;
const int PAGE_SIZE = GLEEBUG_PAGE_SIZE;
//key typedefs
typedef std::pair<BreakpointType, ptr> BreakpointKey;
@ -33,6 +36,8 @@ namespace GleeBug
typedef std::map<BreakpointKey, BreakpointInfo> BreakpointMap;
typedef std::map<BreakpointKey, BreakpointCallback> BreakpointCallbackMap;
typedef std::unordered_map<ptr, BreakpointMap::iterator> SoftwareBreakpointMap;
typedef std::set<Range, RangeCompare> MemoryBreakpointSet;
typedef std::unordered_map<ptr, MemoryBreakpointData> MemoryBreakpointMap;
//vector typedefs
typedef std::vector<StepCallback> StepCallbackVector;

374
GleeBug/Debugger.Loop.Exception.cpp
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@ -10,6 +10,25 @@ namespace GleeBug
mProcess->systemBreakpoint = true;
mContinueStatus = DBG_CONTINUE;
//get process DEP policy
#ifndef _WIN64
typedef BOOL(WINAPI * GETPROCESSDEPPOLICY)(
_In_ HANDLE /*hProcess*/,
_Out_ LPDWORD /*lpFlags*/,
_Out_ PBOOL /*lpPermanent*/
);
static auto GPDP = GETPROCESSDEPPOLICY(GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "GetProcessDEPPolicy"));
if (GPDP)
{
DWORD lpFlags;
BOOL bPermanent;
if (GPDP(mProcess->hProcess, &lpFlags, &bPermanent))
mProcess->permanentDep = lpFlags && bPermanent;
}
#else
mProcess->permanentDep = true;
#endif //_WIN64
//call the attach callback if appropriate
if(mAttachedToProcess && mProcess->dwProcessId == mMainProcess.dwProcessId)
cbAttachBreakpoint();
@ -148,6 +167,353 @@ namespace GleeBug
mProcess->DeleteGenericBreakpoint(info);
}
void Debugger::exceptionGuardPage(const EXCEPTION_RECORD & exceptionRecord, bool firstChance)
{
/*
ASSUME:
exceptionAddress may or may not have been generated by your breakpoints.
*/
char error[128] = "";
auto exceptionAddress = ptr(exceptionRecord.ExceptionInformation[1]);
//check if the exception address is directly in the range of a memory breakpoint
auto foundRange = mProcess->memoryBreakpointRanges.find(Range(exceptionAddress, exceptionAddress));
if (foundRange == mProcess->memoryBreakpointRanges.end())
{
//if not in range, check if a memory breakpoint is in the accessed page
auto foundPage = mProcess->memoryBreakpointPages.find(exceptionAddress & ~(PAGE_SIZE - 1));
if (foundPage != mProcess->memoryBreakpointPages.end())
{
//(this means that by our fault the program generated an exception, we should clean it)
mContinueStatus = DBG_CONTINUE;
//if the page contains a memory breakpoint we have to restore the old protection to correctly resume the debuggee
const auto & page = foundPage->second;
const auto pBaseAddr = foundPage->first;
//We restore the protection
if (!mProcess->MemProtect(foundPage->first, PAGE_SIZE, foundPage->second.OldProtect))
{
sprintf_s(error, "MemProtect failed on 0x%p", foundPage->first);
cbInternalError(error);
}
//However the following situations may occur:
// The instruction we singlestep to is a software breakpoint, which may execute a callback, that can :
// -actually delete a memory breakpoint that takes this page into account
// -add more memory breakpoints
//The solution: We just try to see if the page is mapped into memoryBreakpointPages. If the page is in deed being used by any memory breakpoint,
// then we ought to restore the protection.
mThread->StepInternal(std::bind([this, pBaseAddr]()
{
//seek out the page address
auto found_page = mProcess->memoryBreakpointPages.find(pBaseAddr);
if (found_page == mProcess->memoryBreakpointPages.end())
{
//no page being used by bpx? Then just return
return;
}
mProcess->MemProtect(pBaseAddr, PAGE_SIZE, found_page->second.NewProtect);
return;
}));
}
return;
}
/*
ASSUME:
exceptionAddress is indeed inside a breakpoint range you have defined.
*/
auto foundInfo = mProcess->breakpoints.find({ BreakpointType::Memory, foundRange->first });
if (foundInfo == mProcess->breakpoints.end())
{
sprintf_s(error, "inconsistent memory breakpoint at 0x%p", exceptionAddress);
cbInternalError(error);
return;
}
//check if the memory breakpoint is disabled (meaning we shouldn't intercept the exception)
//TODO: think about what happens with multiple breakpoints in one page where only one is disabled
//There is really no problem about this because enabled is a property of a range and ranges do not overlap.
const auto info = foundInfo->second;
//TODO: check if the right type is accessed (ExceptionInformation[0])
//FIXED:
auto bpxPage = mProcess->memoryBreakpointPages.find(exceptionAddress & ~(PAGE_SIZE - 1));
auto pageAddr = bpxPage->first;
auto pageProperties = bpxPage->second;
if (bpxPage == mProcess->memoryBreakpointPages.end())
{
sprintf_s(error, "Process::memoryBreakPointPages data structure is incosistent, should dump page at 0x%p", exceptionAddress & ~(PAGE_SIZE - 1));
cbInternalError(error);
return;
}
//TODO: If I only have a page with Read bp and the exception was not on read, I don't execute the callback. Because since this was implemented with PAGE_GUARD, writtes or executes still trigger
//This callback.
//FIX: If the memoryBreakpointPages for this page does not have a access flag and has a read flag, but the exception was not on read. Then we resume the debuggee.
if ((exceptionRecord.ExceptionInformation[0] != 0))
{
//The bpx is solely on read.
if (((pageProperties.Type & 0x2) != 0) && ((pageProperties.Type & 0x1) == 0))
{
mContinueStatus = DBG_CONTINUE;
//We restore the protection
if (!mProcess->MemProtect(pageAddr, PAGE_SIZE, pageProperties.OldProtect))
{
sprintf_s(error, "MemProtect failed on 0x%p", pageAddr);
cbInternalError(error);
}
mThread->StepInternal(std::bind([this, pageAddr]()
{
//seek out the page address
auto found_page = mProcess->memoryBreakpointPages.find(pageAddr);
if (found_page == mProcess->memoryBreakpointPages.end())
{
//no page being used by bpx? Then just return
return;
}
mProcess->MemProtect(pageAddr, PAGE_SIZE, found_page->second.NewProtect);
return;
}));
return;
}
else if (((pageProperties.Type & 0x1) != 0))
{
//We are fine if the breakpoint is on Access and somethine other than a read occurred.
}
else
{
//This exception handler was called within a page that had no breakpoints on read or access. Probably the program generated this exception! what a 0x1337 brat.
//In this situation we return control to debuggee.
return;
}
}
else
{
//The generated exception is on read.
//If the page doesn't have a breakpoint on read or on access then something else must have gone wrong - we pass execution to debuggee.
if ((!(pageProperties.Type & 0x2)) && (!(pageProperties.Type & 0x1)))
{
return;
}
}
/*
ASSUME:
The breakpoint at exceptionAddress was indeed generated by me.
Its safe to call the callbacks.
*/
//generic breakpoint callback function.
cbBreakpoint(info);
//TODO: execute the user callback (if present)
//FIXED:
auto bpxCb = mProcess->breakpointCallbacks.find({ BreakpointType::Memory, info.address });
if (bpxCb != mProcess->breakpointCallbacks.end())
{
bpxCb->second(info);
}
mContinueStatus = DBG_CONTINUE;
//TODO: single step and restore page protection
//FIXED:
if (!mProcess->MemProtect(pageAddr, PAGE_SIZE, pageProperties.OldProtect))
{
sprintf_s(error, "MemProtect failed on 0x%p", pageAddr);
cbInternalError(error);
}
//Pass info as well
mThread->StepInternal(std::bind([this, pageAddr]()
{
//With page check this should work better: So when we reach this part of the code we are sure that:
//-The exception Address In deed corresponded to an existing (now possibly deleted) memory breakpoint range
//-memoryBreakpointPages was in deed consistent with this memory address that generated the exception (The data structure wasn't corrupted somehow)
//So our new technique basically checks if the page address is still inside memoryBreakpointRanges structure. If this is true, we simply apply the NewProtect.
//Wide variety of possible scenarios:
//-Bpx on this page and bpx is not singleshot: In the case of PAGE_GUARD page protection (handled by this exception handler), if the page permission map persists, we simply
// enforce the newProtect because this page belongs to a breakpoint somewhere.
//-Bpx is singleshot: Then it was deleted by the end of this call. If the refcount is zero, then we dont find the page on the Memory map, so assume no more memory breakpoints happen there.
// therefore, we do not enforce new protection.
//-Bpx was deleted on the handler: Again the page may or may not be mapped on memoryBreakpointPages. If the bp was deleted, and there are no more breakpoints in this page - The page does not exist on the map and therefore we do not restore old page protection.
//-Bpx was deleted on the handler AND a new breakpoint was added: if the bpx was deleted, and a new one was added on this page then, surely the page is mapped under memoryBreakpointPages.
//Check if the memory page is mapped
auto found_page = mProcess->memoryBreakpointPages.find(pageAddr);
if (found_page != mProcess->memoryBreakpointPages.end())
{
mProcess->MemProtect(pageAddr, PAGE_SIZE, found_page->second.NewProtect);
}
return;
}));
if (info.singleshoot)
{
mProcess->DeleteMemoryBreakpoint(exceptionAddress);
}
}
void Debugger::exceptionAccessViolation(const EXCEPTION_RECORD & exceptionRecord, bool firstChance)
{
/*
ASSUME:
exceptionAddress may or may not have been generated by your breakpoints.
*/
char error[128] = "";
auto exceptionAddress = ptr(exceptionRecord.ExceptionInformation[1]);
//check if the exception address is directly in the range of a memory breakpoint
auto foundRange = mProcess->memoryBreakpointRanges.find(Range(exceptionAddress, exceptionAddress));
if (foundRange == mProcess->memoryBreakpointRanges.end())
{
//if not in range, check if a memory breakpoint is in the accessed page
auto foundPage = mProcess->memoryBreakpointPages.find(exceptionAddress & ~(PAGE_SIZE - 1));
if (foundPage != mProcess->memoryBreakpointPages.end())
{
//(this means that by our fault the program generated an exception, we should clean it)
mContinueStatus = DBG_CONTINUE;
//if the page contains a memory breakpoint we have to restore the old protection to correctly resume the debuggee
const auto & page = foundPage->second;
const auto pBaseAddr = foundPage->first;
//We restore the protection
if (!mProcess->MemProtect(foundPage->first, PAGE_SIZE, foundPage->second.OldProtect))
{
sprintf_s(error, "MemProtect failed on 0x%p", foundPage->first);
cbInternalError(error);
}
//However the following situations may occur:
// The instruction we singlestep to is a software breakpoint, which may execute a callback, that can :
// -actually delete a memory breakpoint that takes this page into account
// -add more memory breakpoints
//The solution: We just try to see if the page is mapped into memoryBreakpointPages. If the page is in deed being used by any memory breakpoint,
// then we ought to restore the protection.
mThread->StepInternal(std::bind([this, pBaseAddr]()
{
//seek out the page address
auto found_page = mProcess->memoryBreakpointPages.find(pBaseAddr);
if (found_page == mProcess->memoryBreakpointPages.end())
{
//no page being used by bpx? Then just return
return;
}
mProcess->MemProtect(pBaseAddr, PAGE_SIZE, found_page->second.NewProtect);
return;
}));
}
return;
}
/*
ASSUME:
exceptionAddress is indeed inside a breakpoint range you have defined.
*/
auto foundInfo = mProcess->breakpoints.find({ BreakpointType::Memory, foundRange->first });
if (foundInfo == mProcess->breakpoints.end())
{
sprintf_s(error, "inconsistent memory breakpoint at 0x%p", exceptionAddress);
cbInternalError(error);
return;
}
//check if the memory breakpoint is disabled (meaning we shouldn't intercept the exception)
//TODO: think about what happens with multiple breakpoints in one page where only one is disabled
//There is really no problem about this because enabled is a property of a range and ranges do not overlap.
const auto info = foundInfo->second;
//TODO: check if the right type is accessed (ExceptionInformation[0])
//FIXED:
auto bpxPage = mProcess->memoryBreakpointPages.find(exceptionAddress & ~(PAGE_SIZE - 1));
auto pageAddr = bpxPage->first;
auto pageProperties = bpxPage->second;
if (bpxPage == mProcess->memoryBreakpointPages.end())
{
sprintf_s(error, "Process::memoryBreakPointPages data structure is incosistent, should dump page at 0x%p", exceptionAddress & ~(PAGE_SIZE - 1));
cbInternalError(error);
return;
}
/*
Access = 1,
Read = 2,
Write = 4,
Execute = 8
*/
//ExceptionInformation[0] should be considered as 1 or 8, because these are for exceptions generated on write or execute.
//Execute is only implemented with page guard if no Data-Execution-Prevention is implemented by the Kernel.
if ((exceptionRecord.ExceptionInformation[0] == 1) && (!(pageProperties.Type & 4)))
{
//The exception was on Write but there was no page breakpoint in Write? Then the program changed the page permissions, or naturally overwritten protected data. We do not interfere.
return;
}
if ((exceptionRecord.ExceptionInformation[0] == 8) && (!(pageProperties.Type & 8)))
{
//The exception was on Execution but there was no page breakpoint in Execute? Then the program changed the page permissions, or naturally executed protected code. We do not interfere.
return;
}
/*
ASSUME:
The breakpoint at exceptionAddress was indeed generated by me.
*/
//generic breakpoint callback function.
cbBreakpoint(info);
//TODO: execute the user callback (if present)
//FIXED:
auto bpxCb = mProcess->breakpointCallbacks.find({ BreakpointType::Memory, info.address });
if (bpxCb != mProcess->breakpointCallbacks.end())
{
bpxCb->second(info);
}
mContinueStatus = DBG_CONTINUE;
//TODO: single step and restore page protection
//FIXED:
if (!mProcess->MemProtect(pageAddr, PAGE_SIZE, pageProperties.OldProtect))
{
sprintf_s(error, "MemProtect failed on 0x%p", pageAddr);
cbInternalError(error);
}
//Pass info as well
mThread->StepInternal(std::bind([this, pageAddr]()
{
//With page check this should work better: So when we reach this part of the code we are sure that:
//-The exception Address In deed corresponded to an existing (now possibly deleted) memory breakpoint range
//-memoryBreakpointPages was in deed consistent with this memory address that generated the exception (The data structure wasn't corrupted somehow)
//So our new technique basically checks if the page address is still inside memoryBreakpointRanges structure. If this is true, we simply apply the NewProtect.
//Wide variety of possible scenarios:
//-Bpx on this page and bpx is not singleshot: In the case of PAGE_GUARD page protection (handled by this exception handler), if the page permission map persists, we simply
// enforce the newProtect because this page belongs to a breakpoint somewhere.
//-Bpx is singleshot: Then it was deleted by the end of this call. If the refcount is zero, then we dont find the page on the Memory map, so assume no more memory breakpoints happen there.
// therefore, we do not enforce new protection.
//-Bpx was deleted on the handler: Again the page may or may not be mapped on memoryBreakpointPages. If the bp was deleted, and there are no more breakpoints in this page - The page does not exist on the map and therefore we do not restore old page protection.
//-Bpx was deleted on the handler AND a new breakpoint was added: if the bpx was deleted, and a new one was added on this page then, surely the page is mapped under memoryBreakpointPages.
//Check if the memory page is mapped
auto found_page = mProcess->memoryBreakpointPages.find(pageAddr);
if (found_page != mProcess->memoryBreakpointPages.end())
{
mProcess->MemProtect(pageAddr, PAGE_SIZE, found_page->second.NewProtect);
}
return;
}));
if (info.singleshoot)
{
mProcess->DeleteMemoryBreakpoint(exceptionAddress);
}
}
void Debugger::exceptionEvent(const EXCEPTION_DEBUG_INFO & exceptionInfo)
{
//let the debuggee handle exceptions per default
@ -159,7 +525,7 @@ namespace GleeBug
//call the debug event callback
cbExceptionEvent(exceptionInfo);
//dispatch the exception
//dispatch the exception (https://msdn.microsoft.com/en-us/library/windows/desktop/aa363082(v=vs.85).aspx)
switch (exceptionInfo.ExceptionRecord.ExceptionCode)
{
case STATUS_BREAKPOINT:
@ -168,6 +534,12 @@ namespace GleeBug
case STATUS_SINGLE_STEP:
exceptionSingleStep(exceptionRecord, firstChance);
break;
case STATUS_GUARD_PAGE_VIOLATION:
exceptionGuardPage(exceptionRecord, firstChance);
break;
case STATUS_ACCESS_VIOLATION:
exceptionAccessViolation(exceptionRecord, firstChance);
break;
}
//call the unhandled exception callback

15
GleeBug/Debugger.Loop.cpp
View File

@ -44,8 +44,6 @@ namespace GleeBug
{
mThread = mProcess->thread = &threadFound->second;
mRegisters = &mThread->registers;
if (!mThread->RegReadContext())
cbInternalError("ThreadInfo::RegReadContext() failed!");
}
else
{
@ -64,6 +62,10 @@ namespace GleeBug
}
}
//read register contexts
if(mProcess && !mProcess->RegReadContext())
cbInternalError("Process::RegReadContext() failed!");
//call the pre debug event callback
cbPreDebugEvent(mDebugEvent);
@ -120,12 +122,9 @@ namespace GleeBug
mThread->registers.TrapFlag = false;
}
//write the register context
if (mThread)
{
if (!mThread->RegWriteContext())
cbInternalError("ThreadInfo::RegWriteContext() failed!");
}
//write register contexts
if(mProcess && !mProcess->RegWriteContext())
cbInternalError("Process::RegWriteContext() failed!");
//continue the debug event
if (!ContinueDebugEvent(mDebugEvent.dwProcessId, mDebugEvent.dwThreadId, mContinueStatus))

249
GleeBug/Debugger.Process.Breakpoint.cpp
View File

@ -12,7 +12,6 @@ namespace GleeBug
//setup the breakpoint information struct
BreakpointInfo info = {};
info.address = address;
info.enabled = true;
info.singleshoot = singleshoot;
info.type = BreakpointType::Software;
@ -64,13 +63,10 @@ namespace GleeBug
return false;
const auto & info = found->second;
//restore the breakpoint bytes if the breakpoint is enabled
if (info.enabled)
{
if (!MemWriteUnsafe(address, info.internal.software.oldbytes, info.internal.software.size))
return false;
FlushInstructionCache(hProcess, nullptr, 0);
}
//restore the breakpoint bytes
if (!MemWriteUnsafe(address, info.internal.software.oldbytes, info.internal.software.size))
return false;
FlushInstructionCache(hProcess, nullptr, 0);
//remove the breakpoint from the maps
softwareBreakpointReferences.erase(info.address);
@ -84,7 +80,7 @@ namespace GleeBug
//find a free hardware breakpoint slot
for (int i = 0; i < HWBP_COUNT; i++)
{
if (!hardwareBreakpoints[i].enabled)
if (!hardwareBreakpoints[i].internal.hardware.enabled)
{
slot = HardwareSlot(i);
return true;
@ -122,7 +118,6 @@ namespace GleeBug
//setup the breakpoint information struct
BreakpointInfo info = {};
info.address = address;
info.enabled = true;
info.singleshoot = singleshoot;
info.type = BreakpointType::Hardware;
info.internal.hardware.slot = slot;
@ -160,7 +155,7 @@ namespace GleeBug
const auto & info = found->second;
//delete the hardware breakpoint from the internal buffer
hardwareBreakpoints[int(info.internal.hardware.slot)].enabled = false;
hardwareBreakpoints[int(info.internal.hardware.slot)].internal.hardware.enabled = false;
//delete the hardware breakpoint from the registers
bool success = true;
@ -176,6 +171,236 @@ namespace GleeBug
return success;
}
#define PAGE_SHIFT (12)
#define PAGE_ALIGN(Va) ((ULONG_PTR)((ULONG_PTR)(Va) & ~(PAGE_SIZE - 1)))
#define BYTES_TO_PAGES(Size) (((Size) >> PAGE_SHIFT) + (((Size) & (PAGE_SIZE - 1)) != 0))
#define ROUND_TO_PAGES(Size) (((ULONG_PTR)(Size) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
/*
#define PAGE_NOACCESS 0x01
#define PAGE_READONLY 0x02
#define PAGE_READWRITE 0x04
#define PAGE_WRITECOPY 0x08 <- not supported
#define PAGE_EXECUTE 0x10
#define PAGE_EXECUTE_READ 0x20
#define PAGE_EXECUTE_READWRITE 0x40
#define PAGE_EXECUTE_WRITECOPY 0x80 <- not supported
#define PAGE_GUARD 0x100 <- not supported with PAGE_NOACCESS
#define PAGE_NOCACHE 0x200 <- not supported with PAGE_GUARD or PAGE_WRITECOMBINE
#define PAGE_WRITECOMBINE 0x400 <- not supported with PAGE_GUARD or PAGE_NOCACHE
*/
static DWORD RemoveExecuteAccess(DWORD dwAccess)
{
//These settings can trigger access violation.
DWORD dwBase = dwAccess & 0xFF;
DWORD dwHigh = dwAccess & 0xFFFFFF00;
switch (dwBase)
{
case PAGE_EXECUTE:
return dwHigh | PAGE_READONLY;
case PAGE_EXECUTE_READ:
case PAGE_EXECUTE_READWRITE:
case PAGE_EXECUTE_WRITECOPY:
return dwHigh | (dwBase >> 4); //This removes execute in deed; https://msdn.microsoft.com/en-us/library/windows/desktop/aa366786(v=vs.85).aspx - 0x1337 tricks
default:
return dwAccess;
}
}
static DWORD RemoveWriteAccess(DWORD dwAccess)
{
DWORD dwBase = dwAccess & 0xFF;
switch (dwBase)
{
case PAGE_READWRITE:
case PAGE_EXECUTE_READWRITE:
return (dwAccess & 0xFFFFFF00) | (dwBase >> 1);
default:
return dwAccess;
}
}
bool Process::SetNewPageProtection(ptr page, MemoryBreakpointData & data, MemoryType type)
{
//TODO: handle PAGE_NOACCESS and such correctly (since it cannot be combined with PAGE_GUARD)
auto found = memoryBreakpointPages.find(page);
if (found == memoryBreakpointPages.end())
{
data.Refcount = 1;
switch (type)
{
case MemoryType::Access:
case MemoryType::Read:
data.NewProtect = data.OldProtect | PAGE_GUARD;
break;
case MemoryType::Write:
data.NewProtect = RemoveWriteAccess(data.OldProtect);
break;
case MemoryType::Execute:
data.NewProtect = permanentDep ? RemoveExecuteAccess(data.OldProtect) : data.OldProtect | PAGE_GUARD;
break;
}
}
else
{
auto & oldData = found->second;
data.Type = oldData.Type | uint32(type); //combines new protection
data.OldProtect = oldData.OldProtect; // old protection remains the same
data.Refcount = oldData.Refcount + 1; //increment reference count
if (oldData.Type == uint32(type)) // Edge case for when you need to set a mem bpx on a same page with the same type, you just leave newProtect = OldProtect.
{
data.NewProtect = data.OldProtect;
}
else if (data.Type & uint32(MemoryType::Access) || data.Type & uint32(MemoryType::Read)) // Access/Read always becomes PAGE_GUARD ; This page cannot access or Read?
data.NewProtect = data.OldProtect | PAGE_GUARD; //as before
else if (data.Type & (uint32(MemoryType::Write) | uint32(MemoryType::Execute))) // Write + Execute becomes either PAGE_GUARD or both write and execute flags removed
data.NewProtect = permanentDep ? RemoveExecuteAccess(RemoveWriteAccess(data.OldProtect)) : data.OldProtect | PAGE_GUARD;
}
return MemProtect(page, PAGE_SIZE, data.NewProtect);
}
bool Process::SetMemoryBreakpoint(ptr address, ptr size, MemoryType type, bool singleshoot)
{
//TODO: error reporting
//basic checks
if (!MemIsValidPtr(address) || !size)
return false;
//check if the range is unused for any previous memory breakpoints
auto range = Range(address, address + size - 1);
if (memoryBreakpointRanges.find(range) != memoryBreakpointRanges.end())
return false;
//change page protections
bool success = true;
struct TempMemoryBreakpointData
{
ptr addr;
DWORD OldProtect;
MemoryBreakpointData data;
};
std::vector<TempMemoryBreakpointData> breakpointData;
{
breakpointData.reserve(size / PAGE_SIZE);
TempMemoryBreakpointData tempData;
MemoryBreakpointData data;
data.Type = uint32(type);
auto alignedAddress = PAGE_ALIGN(address);
for (auto page = alignedAddress; page < alignedAddress + BYTES_TO_PAGES(size); page += PAGE_SIZE)
{
MEMORY_BASIC_INFORMATION mbi;
if (!VirtualQueryEx(hProcess, LPCVOID(page), &mbi, sizeof(mbi)))
{
success = false;
break;
}
data.OldProtect = mbi.Protect;
if (!SetNewPageProtection(page, data, type))
{
success = false;
break;
}
tempData.addr = page;
tempData.OldProtect = mbi.Protect;
tempData.data = data;
breakpointData.push_back(tempData);
}
}
//if changing the page protections failed, attempt to revert all protection changes
if (!success)
{
for (const auto & page : breakpointData)
MemProtect(page.addr, PAGE_SIZE, page.OldProtect);
return false;
}
//set the page data
for (const auto & page : breakpointData)
memoryBreakpointPages[page.addr] = page.data;
//setup the breakpoint information struct
BreakpointInfo info = {};
info.address = address;
info.singleshoot = singleshoot;
info.type = BreakpointType::Memory;
info.internal.memory.type = type;
info.internal.memory.size = size;
//insert in the breakpoint map
breakpoints.insert({ { info.type, info.address }, info });
memoryBreakpointRanges.insert(range);
return true;
}
bool Process::SetMemoryBreakpoint(ptr address, ptr size, const BreakpointCallback & cbBreakpoint, MemoryType type, bool singleshoot)
{
//check if a callback on this address was already found
if (breakpointCallbacks.find({ BreakpointType::Memory, address }) != breakpointCallbacks.end())
return false;
//set the memory breakpoint
if (!SetMemoryBreakpoint(address, size, type, singleshoot))
return false;
//insert the callback
breakpointCallbacks.insert({ { BreakpointType::Memory, address }, cbBreakpoint });
return true;
}
bool Process::DeleteMemoryBreakpoint(ptr address)
{
//find the memory breakpoint range
auto range = memoryBreakpointRanges.find(Range(address, address));
if(range == memoryBreakpointRanges.end())
return false;
//find the memory breakpoint
auto found = breakpoints.find({ BreakpointType::Memory, range->first });
if (found == breakpoints.end())
return false;
const auto & info = found->second;
//delete the memory breakpoint from the pages
bool success = true;
auto alignedAddress = PAGE_ALIGN(info.address);
for (auto page = alignedAddress; page < alignedAddress + BYTES_TO_PAGES(info.internal.memory.size); page += PAGE_SIZE)
{
auto foundData = memoryBreakpointPages.find(page);
if (foundData == memoryBreakpointPages.end())
continue; //TODO: error reporting
auto & data = foundData->second;
DWORD Protect;
data.Refcount--;
if (data.Refcount)
{
//TODO: properly determine the new protection flag
//Are there any other protections left?
//If so add the guard
if (data.Type & ~uint32(info.internal.memory.type))
data.NewProtect = data.OldProtect | PAGE_GUARD;
Protect = data.NewProtect;
}
else
Protect = data.OldProtect;
if (!MemProtect(page, PAGE_SIZE, Protect))
success = false;
if (!data.Refcount)
memoryBreakpointPages.erase(foundData);
}
//delete the breakpoint from the maps
breakpoints.erase(found);
breakpointCallbacks.erase({ BreakpointType::Hardware, address });
memoryBreakpointRanges.erase(Range(address, address));
return success;
}
bool Process::DeleteGenericBreakpoint(const BreakpointInfo & info)
{
switch (info.type)
@ -185,7 +410,7 @@ namespace GleeBug
case BreakpointType::Hardware:
return DeleteHardwareBreakpoint(info.address);
case BreakpointType::Memory:
return false; //TODO implement this
return DeleteMemoryBreakpoint(info.address);
default:
return false;
}

11
GleeBug/Debugger.Process.Memory.cpp
View File

@ -74,6 +74,17 @@ namespace GleeBug
return MemReadUnsafe(address, &byte, sizeof(byte));
}
bool Process::MemProtect(ptr address, ptr size, DWORD newProtect, DWORD* oldProtect)
{
DWORD dwOldProtect;
auto vps = VirtualProtectEx(hProcess, LPVOID(address), size, newProtect, &dwOldProtect);
if (!vps)
return false;
if (oldProtect)
*oldProtect = dwOldProtect;
return true;
}
ptr Process::MemFindPattern(ptr data, size_t datasize, const Pattern::WildcardPattern & pattern, bool safe) const
{
std::vector<uint8> buffer(datasize);

5
GleeBug/Debugger.Process.cpp
View File

@ -8,10 +8,11 @@ namespace GleeBug
dwMainThreadId(dwMainThreadId),
createProcessInfo(createProcessInfo),
thread(nullptr),
systemBreakpoint(false)
systemBreakpoint(false),
permanentDep(false)
{
for (int i = 0; i < HWBP_COUNT; i++)
hardwareBreakpoints[i].enabled = false;
hardwareBreakpoints[i].internal.hardware.enabled = false;
}
void Process::StepOver(const StepCallback & cbStep)

86
GleeBug/Debugger.Process.h
View File

@ -23,6 +23,7 @@ namespace GleeBug
Thread* thread;
bool systemBreakpoint;
bool permanentDep;
ThreadMap threads; //DO NOT COPY THESE OBJECTS!
DllMap dlls;
@ -30,6 +31,8 @@ namespace GleeBug
SoftwareBreakpointMap softwareBreakpointReferences;
BreakpointCallbackMap breakpointCallbacks;
BreakpointInfo hardwareBreakpoints[4];
MemoryBreakpointSet memoryBreakpointRanges;
MemoryBreakpointMap memoryBreakpointPages;
/**
\brief Constructor.
@ -119,6 +122,16 @@ namespace GleeBug
*/
bool MemIsValidPtr(ptr address) const;
/**
\brief Memory protect (execute VirtualProtect in the context of the process).
\param address The address to change protection for.
\param size The size to change protection for.
\param newProtect The new protection.
\param [out] oldProtect The old protection.
\return true if it succeeds, false if it fails.
*/
bool MemProtect(ptr address, ptr size, DWORD newProtect, DWORD* oldProtect = nullptr);
/**
\brief Finds the first occurrence of a pattern in process memory.
\param data The address to start searching from.
@ -300,6 +313,61 @@ namespace GleeBug
*/
bool DeleteHardwareBreakpoint(ptr address);
/**
\brief Sets new page protection to trigger an exception for certain memory breakpoint types.
\param page The page address.
\param data The current protection of the page.
\param type The memory breakpoint type to trigger an exception for.
\return true if it succeeds, false if it fails.
*/
bool SetNewPageProtection(ptr page, MemoryBreakpointData & data, MemoryType type);
/**
\brief Sets a memory breakpoint.
\param address The address to set the memory breakpoint on.
\param size Size of the memory breakpoint (in bytes).
\param type (Optional) The memory breakpoint type.
\param singleshoot (Optional) True to remove the breakpoint after the first hit.
\return true if the memory breakpoint was set, false otherwise.
*/
bool SetMemoryBreakpoint(ptr address, ptr size, MemoryType type = MemoryType::Access, bool singleshoot = true);
/**
\brief Sets a memory breakpoint.
\param address The address to set the memory breakpoint on.
\param size Size of the memory breakpoint (in bytes).
\param cbBreakpoint The breakpoint callback. Can be written using BIND1(this, MyDebugger::cb).
\param type (Optional) The memory breakpoint type.
\param singleshoot (Optional) True to remove the breakpoint after the first hit.
\return true if the memory breakpoint was set, false otherwise.
*/
bool SetMemoryBreakpoint(ptr address, ptr size, const BreakpointCallback & cbBreakpoint, MemoryType type = MemoryType::Access, bool singleshoot = true);
/**
\brief Sets a hardware breakpoint.
\tparam T Generic type parameter. Must be a subclass of Debugger.
\param address The address to set the hardware breakpoint on.
\param size Size of the memory breakpoint (in bytes).
\param debugger This pointer to a subclass of Debugger.
\param callback Pointer to the callback. Written like: &MyDebugger::cb
\param type (Optional) The memory breakpoint type.
\param singleshoot (Optional) True to remove the breakpoint after the first hit.
\return true if the memory breakpoint was set, false otherwise.
*/
template <typename T>
bool SetMemoryBreakpoint(ptr address, ptr size, T* debugger, void(T::*callback)(const BreakpointInfo & info), MemoryType type = MemoryType::Access, bool singleshoot = true)
{
static_cast<void>(static_cast<Debugger*>(debugger));
return SetMemoryBreakpoint(address, size, std::bind(callback, debugger, std::placeholders::_1), type, singleshoot);
}
/**
\brief Deletes a hardware breakpoint.
\param address The address the hardware breakpoint is set on.
\return true if the hardware breakpoint was deleted, false otherwise.
*/
bool DeleteMemoryBreakpoint(ptr address);
/**
\brief Deletes a breakpoint.
\param info The breakpoint information.
@ -326,6 +394,24 @@ namespace GleeBug
StepOver(std::bind(callback, debugger));
}
bool RegReadContext()
{
auto result = true;
for(auto & thread : this->threads)
if(!thread.second.RegReadContext())
result = false;
return result;
}
bool RegWriteContext()
{
auto result = true;
for(auto & thread : this->threads)
if(!thread.second.RegWriteContext())
result = false;
return result;
}
private:
Capstone mCapstone;
};

16
GleeBug/Debugger.Thread.Registers.GetSet.cpp
View File

@ -54,8 +54,10 @@
namespace GleeBug
{
ptr Registers::Get(R reg) const
ptr Registers::Get(R reg)
{
handleLazyContext();
switch (reg)
{
case R::DR0:
@ -244,6 +246,8 @@ namespace GleeBug
void Registers::Set(R reg, ptr value)
{
handleLazyContext();
switch (reg)
{
case R::DR0:
@ -513,21 +517,27 @@ namespace GleeBug
}
}
bool Registers::GetFlag(F flag) const
bool Registers::GetFlag(F flag)
{
handleLazyContext();
return (mContext.EFlags & ptr(flag)) == ptr(flag);
}
void Registers::SetFlag(F flag, bool set)
{
handleLazyContext();
if (set)
mContext.EFlags |= ptr(flag);
else
mContext.EFlags &= ~ptr(flag);
}
void* Registers::getPtr(R reg) const
void* Registers::getPtr(R reg)
{
handleLazyContext();
switch (reg)
{
case R::DR0:

34
GleeBug/Debugger.Thread.Registers.cpp
View File

@ -102,13 +102,45 @@ namespace GleeBug
memset(&this->mContext, 0, sizeof(CONTEXT));
}
const CONTEXT* Registers::GetContext() const
const CONTEXT* Registers::GetContext()
{
handleLazyContext();
return &mContext;
}
void Registers::SetContext(const CONTEXT & context)
{
handleLazyContext();
this->mContext = context;
}
void Registers::setContextLazy(CONTEXT* oldContext, HANDLE hThread)
{
this->mLazyOldContext = oldContext;
this->mLazyThread = hThread;
this->mLazySet = true;
this->mContext = *this->mLazyOldContext;
}
bool Registers::handleLazyContext()
{
if(!this->mLazySet)
return true;
if(!this->mLazyOldContext || !this->mLazyThread) //assert
__debugbreak();
//TODO: handle failure of GetThreadContext
auto result = false;
if(GetThreadContext(this->mLazyThread, this->mLazyOldContext))
{
this->mContext = *this->mLazyOldContext;
result = true;
}
this->mLazyOldContext = nullptr;
this->mLazyThread = nullptr;
this->mLazySet = false;
return result;
}
};

26
GleeBug/Debugger.Thread.Registers.h
View File

@ -11,6 +11,7 @@ namespace GleeBug
class Registers
{
friend class Register;
friend class Thread;
public:
/**
@ -123,7 +124,7 @@ namespace GleeBug
\param reg The register to get.
\return The register value.
*/
ptr Get(R reg) const;
ptr Get(R reg);
/**
\brief Sets a given register.
@ -137,7 +138,7 @@ namespace GleeBug
\param flag The flag to get.
\return true if the flag is set, false otherwise.
*/
bool GetFlag(F flag) const;
bool GetFlag(F flag);
/**
\brief Sets a flag.
@ -149,7 +150,7 @@ namespace GleeBug
\brief Gets a pointer to the context object.
\return This function will never return a nullptr.
*/
const CONTEXT* GetContext() const;
const CONTEXT* GetContext();
/**
\brief Sets the CONTEXT.
@ -160,7 +161,24 @@ namespace GleeBug
private:
CONTEXT mContext;
void* getPtr(R reg) const;
CONTEXT* mLazyOldContext = nullptr;
HANDLE mLazyThread = nullptr;
bool mLazySet = false;
/**
\brief Lazily set CONTEXT. This will only actually retrieve the context if a function in this thread is called.
\param oldContext Pointer to the old context, used to determine if updates are required.
\param hThread Handle of the thread to get the context from if required.
*/
void setContextLazy(CONTEXT* oldContext, HANDLE hThread);
/**
\brief Retrieve the actual context if setContextLazy has been called.
\return Whether retrieving the actual context was successful.
*/
bool handleLazyContext();
void* getPtr(R reg);
};
};

14
GleeBug/Debugger.Thread.cpp
View File

@ -44,21 +44,17 @@ namespace GleeBug
{
memset(&this->mOldContext, 0, sizeof(CONTEXT));
this->mOldContext.ContextFlags = CONTEXT_ALL; //TODO: granular control over what's required
if (GetThreadContext(this->hThread, &this->mOldContext))
{
this->registers.SetContext(this->mOldContext);
return true;
}
return false;
this->registers.setContextLazy(&this->mOldContext, this->hThread);
return true;
}
bool Thread::RegWriteContext() const
bool Thread::RegWriteContext()
{
//check if something actually changed
if (memcmp(&this->mOldContext, this->registers.GetContext(), sizeof(CONTEXT)) == 0)
if (memcmp(&this->mOldContext, &this->registers.mContext, sizeof(CONTEXT)) == 0)
return true;
//update the context
return !!SetThreadContext(this->hThread, this->registers.GetContext());
return !!SetThreadContext(this->hThread, &this->registers.mContext);
}
void Thread::StepInto()

2
GleeBug/Debugger.Thread.h
View File

@ -55,7 +55,7 @@ namespace GleeBug
\brief Write the register context to the thread. This does nothing if the registers did not change.
\return true if it succeeds, false if it fails.
*/
bool RegWriteContext() const;
bool RegWriteContext();
/**
\brief Step into.

2
GleeBug/Debugger.cpp
View File

@ -39,7 +39,7 @@ namespace GleeBug
nullptr,
nullptr,
FALSE,
DEBUG_PROCESS | CREATE_NEW_CONSOLE,
DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS | CREATE_NEW_CONSOLE,
nullptr,
szCurrentDirectory,
&mMainStartupInfo,

4
GleeBug/Debugger.h
View File

@ -271,6 +271,10 @@ namespace GleeBug
*/
virtual void exceptionHardwareBreakpoint(ptr exceptionAddress);
virtual void exceptionGuardPage(const EXCEPTION_RECORD & exceptionRecord, bool firstChance);
virtual void exceptionAccessViolation(const EXCEPTION_RECORD & exceptionRecord, bool firstChance);
protected: //variables
STARTUPINFOW mMainStartupInfo;
PROCESS_INFORMATION mMainProcess;

464
LICENSE
View File

@ -1,165 +1,373 @@
GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Mozilla Public License Version 2.0
==================================
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
1. Definitions
--------------
1.1. "Contributor"
means each individual or legal entity that creates, contributes to
the creation of, or owns Covered Software.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used
by a Contributor and that particular Contributor's Contribution.
0. Additional Definitions.
1.3. "Contribution"
means Covered Software of a particular Contributor.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached
the notice in Exhibit A, the Executable Form of such Source Code
Form, and Modifications of such Source Code Form, in each case
including portions thereof.
"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.
1.5. "Incompatible With Secondary Licenses"
means
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
(a) that the initial Contributor has attached the notice described
in Exhibit B to the Covered Software; or
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
(b) that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the
terms of a Secondary License.
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in
a separate file or files, that is not Covered Software.
1. Exception to Section 3 of the GNU GPL.
1.8. "License"
means this document.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible,
whether at the time of the initial grant or subsequently, any and
all of the rights conveyed by this License.
2. Conveying Modified Versions.
1.10. "Modifications"
means any of the following:
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
version:
(a) any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered
Software; or
a) under this License, provided that you make a good faith effort to
ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
(b) any new file in Source Code Form that contains any Covered
Software.
b) under the GNU GPL, with none of the additional permissions of
this License applicable to that copy.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the
License, by the making, using, selling, offering for sale, having
made, import, or transfer of either its Contributions or its
Contributor Version.
3. Object Code Incorporating Material from Library Header Files.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU
Lesser General Public License, Version 2.1, the GNU Affero General
Public License, Version 3.0, or any later versions of those
licenses.
The object code form of an Application may incorporate material from
a header file that is part of the Library. You may convey such object
code under terms of your choice, provided that, if the incorporated
material is not limited to numerical parameters, data structure
layouts and accessors, or small macros, inline functions and templates
(ten or fewer lines in length), you do both of the following:
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
a) Give prominent notice with each copy of the object code that the
Library is used in it and that the Library and its use are
covered by this License.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that
controls, is controlled by, or is under common control with You. For
purposes of this definition, "control" means (a) the power, direct
or indirect, to cause the direction or management of such entity,
whether by contract or otherwise, or (b) ownership of more than
fifty percent (50%) of the outstanding shares or beneficial
ownership of such entity.
b) Accompany the object code with a copy of the GNU GPL and this license
document.
2. License Grants and Conditions
--------------------------------
4. Combined Works.
2.1. Grants
You may convey a Combined Work under terms of your choice that,
taken together, effectively do not restrict modification of the
portions of the Library contained in the Combined Work and reverse
engineering for debugging such modifications, if you also do each of
the following:
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a) Give prominent notice with each copy of the Combined Work that
the Library is used in it and that the Library and its use are
covered by this License.
(a) under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
b) Accompany the Combined Work with a copy of the GNU GPL and this license
document.
(b) under Patent Claims of such Contributor to make, use, sell, offer
for sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
c) For a Combined Work that displays copyright notices during
execution, include the copyright notice for the Library among
these notices, as well as a reference directing the user to the
copies of the GNU GPL and this license document.
2.2. Effective Date
d) Do one of the following:
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
0) Convey the Minimal Corresponding Source under the terms of this
License, and the Corresponding Application Code in a form
suitable for, and under terms that permit, the user to
recombine or relink the Application with a modified version of
the Linked Version to produce a modified Combined Work, in the
manner specified by section 6 of the GNU GPL for conveying
Corresponding Source.
2.3. Limitations on Grant Scope
1) Use a suitable shared library mechanism for linking with the
Library. A suitable mechanism is one that (a) uses at run time
a copy of the Library already present on the user's computer
system, and (b) will operate properly with a modified version
of the Library that is interface-compatible with the Linked
Version.
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
e) Provide Installation Information, but only if you would otherwise
be required to provide such information under section 6 of the
GNU GPL, and only to the extent that such information is
necessary to install and execute a modified version of the
Combined Work produced by recombining or relinking the
Application with a modified version of the Linked Version. (If
you use option 4d0, the Installation Information must accompany
the Minimal Corresponding Source and Corresponding Application
Code. If you use option 4d1, you must provide the Installation
Information in the manner specified by section 6 of the GNU GPL
for conveying Corresponding Source.)
(a) for any code that a Contributor has removed from Covered Software;
or
5. Combined Libraries.
(b) for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
You may place library facilities that are a work based on the
Library side by side in a single library together with other library
facilities that are not Applications and are not covered by this
License, and convey such a combined library under terms of your
choice, if you do both of the following:
(c) under Patent Claims infringed by Covered Software in the absence of
its Contributions.
a) Accompany the combined library with a copy of the same work based
on the Library, uncombined with any other library facilities,
conveyed under the terms of this License.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
b) Give prominent notice with the combined library that part of it
is a work based on the Library, and explaining where to find the
accompanying uncombined form of the same work.
2.4. Subsequent Licenses
6. Revised Versions of the GNU Lesser General Public License.
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
The Free Software Foundation may publish revised and/or new versions
of the GNU Lesser General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.
2.5. Representation
Each version is given a distinguishing version number. If the
Library as you received it specifies that a certain numbered version
of the GNU Lesser General Public License "or any later version"
applies to it, you have the option of following the terms and
conditions either of that published version or of any later version
published by the Free Software Foundation. If the Library as you
received it does not specify a version number of the GNU Lesser
General Public License, you may choose any version of the GNU Lesser
General Public License ever published by the Free Software Foundation.
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights
to grant the rights to its Contributions conveyed by this License.
If the Library as you received it specifies that a proxy can decide
whether future versions of the GNU Lesser General Public License shall
apply, that proxy's public statement of acceptance of any version is
permanent authorization for you to choose that version for the
Library.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
in Section 2.1.
3. Responsibilities
-------------------
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
(a) such Covered Software must also be made available in Source Code
Form, as described in Section 3.1, and You must inform recipients of
the Executable Form how they can obtain a copy of such Source Code
Form by reasonable means in a timely manner, at a charge no more
than the cost of distribution to the recipient; and
(b) You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter
the recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty,
or limitations of liability) contained within the Source Code Form of
the Covered Software, except that You may alter any license notices to
the extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
---------------------------------------------------
If it is impossible for You to comply with any of the terms of this
License with respect to some or all of the Covered Software due to
statute, judicial order, or regulation then You must: (a) comply with
the terms of this License to the maximum extent possible; and (b)
describe the limitations and the code they affect. Such description must
be placed in a text file included with all distributions of the Covered
Software under this License. Except to the extent prohibited by statute
or regulation, such description must be sufficiently detailed for a
recipient of ordinary skill to be able to understand it.
5. Termination
--------------
5.1. The rights granted under this License will terminate automatically
if You fail to comply with any of its terms. However, if You become
compliant, then the rights granted under this License from a particular
Contributor are reinstated (a) provisionally, unless and until such
Contributor explicitly and finally terminates Your grants, and (b) on an
ongoing basis, if such Contributor fails to notify You of the
non-compliance by some reasonable means prior to 60 days after You have
come back into compliance. Moreover, Your grants from a particular
Contributor are reinstated on an ongoing basis if such Contributor
notifies You of the non-compliance by some reasonable means, this is the
first time You have received notice of non-compliance with this License
from such Contributor, and You become compliant prior to 30 days after
Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all
end user license agreements (excluding distributors and resellers) which
have been validly granted by You or Your distributors under this License
prior to termination shall survive termination.
************************************************************************
* *
* 6. Disclaimer of Warranty *
* ------------------------- *
* *
* Covered Software is provided under this License on an "as is" *
* basis, without warranty of any kind, either expressed, implied, or *
* statutory, including, without limitation, warranties that the *
* Covered Software is free of defects, merchantable, fit for a *
* particular purpose or non-infringing. The entire risk as to the *
* quality and performance of the Covered Software is with You. *
* Should any Covered Software prove defective in any respect, You *
* (not any Contributor) assume the cost of any necessary servicing, *
* repair, or correction. This disclaimer of warranty constitutes an *
* essential part of this License. No use of any Covered Software is *
* authorized under this License except under this disclaimer. *
* *
************************************************************************
************************************************************************
* *
* 7. Limitation of Liability *
* -------------------------- *
* *
* Under no circumstances and under no legal theory, whether tort *
* (including negligence), contract, or otherwise, shall any *
* Contributor, or anyone who distributes Covered Software as *
* permitted above, be liable to You for any direct, indirect, *
* special, incidental, or consequential damages of any character *
* including, without limitation, damages for lost profits, loss of *
* goodwill, work stoppage, computer failure or malfunction, or any *
* and all other commercial damages or losses, even if such party *
* shall have been informed of the possibility of such damages. This *
* limitation of liability shall not apply to liability for death or *
* personal injury resulting from such party's negligence to the *
* extent applicable law prohibits such limitation. Some *
* jurisdictions do not allow the exclusion or limitation of *
* incidental or consequential damages, so this exclusion and *
* limitation may not apply to You. *
* *
************************************************************************
8. Litigation
-------------
Any litigation relating to this License may be brought only in the
courts of a jurisdiction where the defendant maintains its principal
place of business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions.
Nothing in this Section shall prevent a party's ability to bring
cross-claims or counter-claims.
9. Miscellaneous
----------------
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides
that the language of a contract shall be construed against the drafter
shall not be used to construe this License against a Contributor.
10. Versions of the License
---------------------------
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
-------------------------------------------
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular
file, then You may include the notice in a location (such as a LICENSE
file in a relevant directory) where a recipient would be likely to look
for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
---------------------------------------------------------
This Source Code Form is "Incompatible With Secondary Licenses", as
defined by the Mozilla Public License, v. 2.0.

67
MyDebugger/MyDebugger.h
View File

@ -8,11 +8,64 @@ using namespace GleeBug;
class MyDebugger : public Debugger
{
protected:
void cbMemoryBreakpoint2(const BreakpointInfo & info)
{
printf("Reached memory breakpoint#2! GIP: 0x%p\n",
mRegisters->Gip());
}
void cbMemoryBreakpoint(const BreakpointInfo & info)
{
unsigned char dataToExec[4];
const char tmp[] = "aaaa";
printf("Reached memory breakpoint! GIP: 0x%p\n",
mRegisters->Gip());
mProcess->MemReadUnsafe(mRegisters->Gip(), dataToExec, 4);
printf("\n What are my bytes? I am so lost.. Dump: ");
for (int i = 0; i < 4; i++)
{
printf("%02X ", dataToExec[i]);
}
mProcess->DeleteMemoryBreakpoint(mRegisters->Gip());
memcpy(dataToExec, tmp, 4);
mProcess->MemReadUnsafe(mRegisters->Gip(), dataToExec, 4);
printf("\n What are my bytes? I am so lost.. Dump: ");
for (int i = 0; i < 4; i++)
{
printf("%02X ", dataToExec[i]);
}
mProcess->SetMemoryBreakpoint(mRegisters->Gip() + 1, 0x1, this, &MyDebugger::cbMemoryBreakpoint2, MemoryType::Access, false);
memcpy(dataToExec, tmp, 4);
mProcess->MemReadUnsafe(mRegisters->Gip(), dataToExec, 4);
printf("\n What are my bytes? I am so lost.. Dump: ");
for (int i = 0; i < 4; i++)
{
printf("%02X ", dataToExec[i]);
}
}
void cbEntryBreakpoint(const BreakpointInfo & info)
{
printf("Reached entry breakpoint! GIP: 0x%p\n",
mRegisters->Gip());
if (mProcess->DeleteBreakpoint(info.address))
#ifdef _WIN64
auto addr = mRegisters->Rbx();
#else
auto addr = mRegisters->Esi();
#endif //_WIN64
printf("Addr: 0x%p\n", addr);
if (mProcess->SetMemoryBreakpoint(addr, 0x10000, this, &MyDebugger::cbMemoryBreakpoint, MemoryType::Execute, false))
puts("Memory breakpoint set!");
else
puts("Failed to set memory breakpoint...");
//system("pause");
/*if (mProcess->DeleteBreakpoint(info.address))
printf("Entry breakpoint deleted!\n");
else
printf("Failed to delete entry breakpoint...\n");
@ -20,7 +73,7 @@ protected:
{
printf("Step after entry breakpoint! GIP: 0x%p\n",
mRegisters->Gip());
});
});*/
}
void cbEntryHardwareBreakpoint(const BreakpointInfo & info)
@ -61,7 +114,13 @@ protected:
else
printf("No free hardware breakpoint slot...\n");*/
if(mProcess->SetBreakpoint(entry, this, &MyDebugger::cbEntryBreakpoint))
//https://github.com/mrexodia/GleeBugMembpTest
#ifdef _WIN64
entry = ptr(createProcess.lpBaseOfImage) + 0x1060; //MembpTest, main.cpp:43 (x64)
#else
entry = ptr(createProcess.lpBaseOfImage) + 0x108F; //MembpTest, main.cpp:43 (x32)
#endif //_WIN64
if(mProcess->SetBreakpoint(entry, this, &MyDebugger::cbEntryBreakpoint, true))
printf("Breakpoint set at 0x%p!\n", entry);
else
printf("Failed to set breakpoint at 0x%p...\b", entry);
@ -119,6 +178,8 @@ protected:
exceptionType,
exceptionInfo.ExceptionRecord.ExceptionCode,
exceptionInfo.ExceptionRecord.ExceptionAddress);
for (DWORD i = 0; i < exceptionInfo.ExceptionRecord.NumberParameters; i++)
printf(" ExceptionInformation[%d] = 0x%p\n", i, exceptionInfo.ExceptionRecord.ExceptionInformation[i]);
}
void cbDebugStringEvent(const OUTPUT_DEBUG_STRING_INFO & debugString) override

6
MyDebugger/main.cpp
View File

@ -7,9 +7,9 @@
static void testDebugger()
{
#ifdef _WIN64
wchar_t szFilePath[256] = L"c:\\test64.exe";
wchar_t szFilePath[256] = L"c:\\MembpTest_x64.exe";
#else //x86
wchar_t szFilePath[256] = L"c:\\test32.exe";
wchar_t szFilePath[256] = L"c:\\MembpTest_x32.exe";
#endif //_WIN64
wchar_t szCommandLine[256] = L"";
wchar_t szCurrentDir[256] = L"c:\\";
@ -161,7 +161,7 @@ static void testCorkami()
int main()
{
testPeFile(L"C:\\test64.exe");
testDebugger();
//testCorkami();
//testPeFile(L"c:\\!exclude\\pe\\bin\\appendedhdr.exe");
puts("");

59
TitanEngineEmulator/Emulator.h
View File

@ -186,6 +186,12 @@ public:
return OpenProcess(dwDesiredAccess, bInheritHandle, dwProcessId);
}
HANDLE TitanOpenThread(DWORD dwDesiredAccess, bool bInheritHandle, DWORD dwThreadId)
{
//TODO
return OpenThread(dwDesiredAccess, bInheritHandle, dwThreadId);
}
ULONG_PTR ImporterGetRemoteAPIAddress(HANDLE hProcess, ULONG_PTR APIAddress)
{
//TODO
@ -229,6 +235,8 @@ public:
auto thread = threadFromHandle(hActiveThread);
if (!thread)
return 0;
if(mIsRunning)
thread->RegReadContext();
return thread->registers.Get(registerFromDword(IndexOfRegister));
}
@ -237,7 +245,11 @@ public:
auto thread = threadFromHandle(hActiveThread);
if (!thread)
return false;
if(mIsRunning)
thread->RegReadContext();
thread->registers.Set(registerFromDword(IndexOfRegister), NewRegisterValue);
if(mIsRunning)
thread->RegWriteContext();
return true;
}
@ -246,6 +258,8 @@ public:
auto thread = threadFromHandle(hActiveThread);
if (!thread || !titcontext)
return false;
if(mIsRunning)
thread->RegReadContext();
memset(titcontext, 0, sizeof(TITAN_ENGINE_CONTEXT_t));
auto context = thread->registers.GetContext();
titcontext->cax = thread->registers.Gax();
@ -288,6 +302,8 @@ public:
auto thread = threadFromHandle(hActiveThread);
if (!thread || !titcontext)
return false;
if(mIsRunning)
thread->RegReadContext();
thread->registers.Gax = titcontext->cax;
thread->registers.Gcx = titcontext->ccx;
thread->registers.Gdx = titcontext->cdx;
@ -322,6 +338,8 @@ public:
context.SegCs = titcontext->cs;
context.SegSs = titcontext->ss;
thread->registers.SetContext(context);
if(mIsRunning)
thread->RegWriteContext();
return true;
}
@ -423,14 +441,19 @@ public:
//Memory Breakpoints
bool SetMemoryBPXEx(ULONG_PTR MemoryStart, SIZE_T SizeOfMemory, DWORD BreakPointType, bool RestoreOnHit, LPVOID bpxCallBack)
{
//TODO
return false;
if (!mProcess)
return false;
return mProcess->SetMemoryBreakpoint(ptr(MemoryStart), ptr(SizeOfMemory), [bpxCallBack](const BreakpointInfo & info)
{
(MEMBPCALLBACK(bpxCallBack))((const void*)info.address);
}, memtypeFromTitan(BreakPointType), !RestoreOnHit);
}
bool RemoveMemoryBPX(ULONG_PTR MemoryStart, SIZE_T SizeOfMemory)
{
//TODO
return false;
if (!mProcess)
return false;
return mProcess->DeleteMemoryBreakpoint(ptr(MemoryStart));
}
//Hardware Breakpoints
@ -438,11 +461,17 @@ public:
{
if (!mProcess)
return false;
return mProcess->SetHardwareBreakpoint(bpxAddress,
if(mIsRunning)
mProcess->RegReadContext();
if(!mProcess->SetHardwareBreakpoint(bpxAddress,
(HardwareSlot)IndexOfRegister, [bpxCallBack](const BreakpointInfo & info)
{
(HWBPCALLBACK(bpxCallBack))((const void*)info.address);
}, hwtypeFromTitan(bpxType), hwsizeFromTitan(bpxSize));
}, hwtypeFromTitan(bpxType), hwsizeFromTitan(bpxSize)))
return false;
if(mIsRunning)
mProcess->RegWriteContext();
return true;
}
bool DeleteHardwareBreakPoint(DWORD IndexOfRegister)
@ -660,12 +689,30 @@ private: //functions
}
}
static MemoryType memtypeFromTitan(DWORD type)
{
switch (type)
{
case UE_MEMORY:
return MemoryType::Access;
case UE_MEMORY_READ:
return MemoryType::Read;
case UE_MEMORY_WRITE:
return MemoryType::Write;
case UE_MEMORY_EXECUTE:
return MemoryType::Execute;
default:
return MemoryType::Access;
}
}
private: //variables
bool mSetDebugPrivilege = false;
typedef void(*CUSTOMHANDLER)(const void*);
typedef void(*STEPCALLBACK)();
typedef STEPCALLBACK BPCALLBACK;
typedef CUSTOMHANDLER HWBPCALLBACK;
typedef CUSTOMHANDLER MEMBPCALLBACK;
CUSTOMHANDLER mCbCREATEPROCESS = nullptr;
CUSTOMHANDLER mCbEXITPROCESS = nullptr;
CUSTOMHANDLER mCbCREATETHREAD = nullptr;

1
TitanEngineEmulator/TitanEngine.h
View File

@ -1012,6 +1012,7 @@ __declspec(dllexport) long TITCALL GetActiveProcessId(const char* szImageName);
__declspec(dllexport) long TITCALL GetActiveProcessIdW(const wchar_t* szImageName);
__declspec(dllexport) void TITCALL EnumProcessesWithLibrary(const char* szLibraryName, void* EnumFunction);
__declspec(dllexport) HANDLE TITCALL TitanOpenProcess(DWORD dwDesiredAccess, bool bInheritHandle, DWORD dwProcessId);
__declspec(dllexport) HANDLE TITCALL TitanOpenThread(DWORD dwDesiredAccess, bool bInheritHandle, DWORD dwThreadId);
// TitanEngine.TLSFixer.functions:
__declspec(dllexport) bool TITCALL TLSBreakOnCallBack(LPVOID ArrayOfCallBacks, DWORD NumberOfCallBacks, LPVOID bpxCallBack);
__declspec(dllexport) bool TITCALL TLSGrabCallBackData(const char* szFileName, LPVOID ArrayOfCallBacks, LPDWORD NumberOfCallBacks);

5
TitanEngineEmulator/TitanEngineEmulator.cpp
View File

@ -117,6 +117,11 @@ __declspec(dllexport) HANDLE TITCALL TitanOpenProcess(DWORD dwDesiredAccess, boo
return emu.TitanOpenProces(dwDesiredAccess, bInheritHandle, dwProcessId);
}
__declspec(dllexport) HANDLE TITCALL TitanOpenThread(DWORD dwDesiredAccess, bool bInheritHandle, DWORD dwThreadId)
{
return emu.TitanOpenThread(dwDesiredAccess, bInheritHandle, dwThreadId);
}
__declspec(dllexport) ULONG_PTR TITCALL ImporterGetRemoteAPIAddress(HANDLE hProcess, ULONG_PTR APIAddress)
{
return emu.ImporterGetRemoteAPIAddress(hProcess, APIAddress);

2
capstone_wrapper

@ -1 +1 @@
Subproject commit 619f5e0a0c43b19ca9dabf34da4ddd19cb84a704
Subproject commit 2034d2a0151866ae56fa51171788217d59c47a7b