163 lines
6.8 KiB
C
163 lines
6.8 KiB
C
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#ifndef _MEMDBG_MEMSEARCH_H
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#define _MEMDBG_MEMSEARCH_H
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// memsearch.h
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// 4/20/2014 jichi
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#include "memdbg/memdbg.h"
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MEMDBG_BEGIN_NAMESPACE
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/// Estimated maximum size of the caller function, the same as ITH FindCallAndEntryAbs
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enum { MaximumFunctionSize = 0x800 };
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/**
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* Return the absolute address of the caller function
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* The same as ITH FindCallAndEntryAbs().
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*
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* @param funcAddr callee function address
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* @param funcInst the machine code where the caller function starts
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* @param lowerBound the lower memory address to search
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* @param upperBound the upper memory address to search
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* @param* callerSearchSize the maximum size of caller
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* @return the caller absolute address if succeed or 0 if fail
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*
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* Example funcInst:
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* 0x55: push ebp
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* 0x81,0xec: sub esp XXOO (0xec81)
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* 0x83,0xec: sub esp XXOO (0xec83)
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*/
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dword_t findCallerAddress(dword_t funcAddr, dword_t funcInst, dword_t lowerBound, dword_t upperBound, dword_t callerSearchSize = MaximumFunctionSize);
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dword_t findCallerAddressAfterInt3(dword_t funcAddr, dword_t lowerBound, dword_t upperBound, dword_t callerSearchSize = MaximumFunctionSize);
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dword_t findLastCallerAddress(dword_t funcAddr, dword_t funcInst, dword_t lowerBound, dword_t upperBound, dword_t callerSearchSize = MaximumFunctionSize);
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dword_t findLastCallerAddressAfterInt3(dword_t funcAddr, dword_t lowerBound, dword_t upperBound, dword_t callerSearchSize = MaximumFunctionSize);
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dword_t findMultiCallerAddress(dword_t funcAddr, const dword_t funcInsts[], dword_t funcInstCount, dword_t lowerBound, dword_t upperBound, dword_t callerSearchSize = MaximumFunctionSize);
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/**
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* Return the absolute address of the long jump (not short jump) instruction address.
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* The same as ITH FindCallOrJmpAbs(false).
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*
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* @param funcAddr callee function address
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* @param lowerBound the lower memory address to search
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* @param upperBound the upper memory address to search
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* @return the call instruction address if succeed or 0 if fail
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*/
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dword_t findJumpAddress(dword_t funcAddr, dword_t lowerBound, dword_t upperBound);
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/**
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* Return the absolute address of the far call (inter-module) instruction address.
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* The same as ITH FindCallOrJmpAbs(true).
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*
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* @param funcAddr callee function address
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* @param lowerBound the lower memory address to search
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* @param upperBound the upper memory address to search
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* @return the call instruction address if succeed or 0 if fail
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*/
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dword_t findFarCallAddress(dword_t funcAddr, dword_t lowerBound, dword_t upperBound);
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/// Near call (intra-module)
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dword_t findNearCallAddress(dword_t funcAddr, dword_t lowerBound, dword_t upperBound);
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/// Default to far call
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inline dword_t findCallAddress(dword_t funcAddr, dword_t lowerBound, dword_t upperBound)
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{ return findFarCallAddress(funcAddr, lowerBound, upperBound); }
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/// Push value >= 0xff
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dword_t findPushDwordAddress(dword_t value, dword_t lowerBound, dword_t upperBound);
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/// Push value <= 0xff
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dword_t findPushByteAddress(byte_t value, dword_t lowerBound, dword_t upperBound);
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/// Default to push DWORD
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inline dword_t findPushAddress(dword_t value, dword_t lowerBound, dword_t upperBound)
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{ return findPushDwordAddress(value, lowerBound, upperBound); }
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/**
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* Return the enclosing function address outside the given address.
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* The same as ITH FindEntryAligned().
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* "Aligned" here means the function must be after in3 (0xcc) or nop (0x90).
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*
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* If the function does NOT exist, this function might raise without admin privilege.
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* It is safer to wrap this function within SEH.
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*
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* @param addr address within th function
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* @param searchSize max backward search size
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* @return beginning address of the function
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* @exception illegal memory access
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*/
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dword_t findEnclosingAlignedFunction(dword_t addr, dword_t searchSize = MaximumFunctionSize);
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/**
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* Return the address of the first matched pattern.
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* Return 0 if failed. The return result is ambiguous if the pattern address is 0.
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* This function simpily traverse all bytes in memory range and would raise
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* if no access to the region.
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*
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* @param pattern array of bytes to match
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* @param patternSize size of the pattern array
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* @param lowerBound search start address
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* @param upperBound search stop address
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* @return absolute address
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* @exception illegal memory access
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*/
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dword_t findBytes(const void *pattern, dword_t patternSize, dword_t lowerBound, dword_t upperBound);
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/**
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* jichi 2/5/2014: The same as findBytes except it uses widecard to match everything.
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* The widecard should use the byte seldom appears in the pattern.
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* See: http://sakuradite.com/topic/124
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*
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* @param pattern array of bytes to match
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* @param patternSize size of the pattern array
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* @param lowerBound search start address
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* @param upperBound search stop address
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* @param* widecard the character to match everything
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* @return absolute address
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* @exception illegal memory access
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*/
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enum : byte_t { WidecardByte = 0x11 }; // jichi 7/17/2014: 0x11 seldom appear in PSP code pattern
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//enum : WORD { WidecardWord = 0xffff };
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dword_t matchBytes(const void *pattern, dword_t patternSize, dword_t lowerBound, dword_t upperBound,
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byte_t wildcard = WidecardByte);
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// User space: 0 - 2G (0 - 0x7ffeffff)
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// Kernel space: 2G - 4G (0x80000000 - 0xffffffff)
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//
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// http://msdn.microsoft.com/en-us/library/windows/hardware/ff560042%28v=vs.85%29.aspx
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// http://codesequoia.wordpress.com/2008/11/28/understand-process-address-space-usage/
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// http://stackoverflow.com/questions/17244912/open-process-with-debug-privileges-and-read-write-memory
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enum MemoryRange : dword_t {
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UserMemoryStartAddress = 0, UserMemoryStopAddress = 0x7ffeffff
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, KernelMemoryStartAddress = 0x80000000, KernelMemoryStopAddress = 0xffffffff
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, MappedMemoryStartAddress = 0x01000000
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, MemoryStartAddress = UserMemoryStartAddress, MemoryStopAddress = UserMemoryStopAddress
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};
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#if 0 // not used
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/**
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* Traverse memory continues pages and return the address of the first matched pattern.
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*
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* @param pattern array of bytes to match
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* @param patternSize size of the pattern array
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* @param lowerBound search start address
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* @param upperBound search stop address
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* @param* search search all pages (SearchAll) or stop on first illegal access (SearchFirst)
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* @return absolute address
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*/
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enum SearchType : byte_t { SearchAll = 0 , SearchFirst };
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dword_t findBytesInPages(const void *pattern, dword_t patternSize,
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dword_t lowerBound = MemoryStartAddress, dword_t upperBound = MemoryStopAddress,
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SearchType search = SearchAll);
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dword_t matchBytesInPages(const void *pattern, dword_t patternSize,
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dword_t lowerBound = MemoryStartAddress, dword_t upperBound = MemoryStopAddress,
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byte_t wildcard = WidecardByte, SearchType search = SearchAll);
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#endif // 0
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MEMDBG_END_NAMESPACE
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#endif // _MEMDBG_MEMSEARCH_H
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