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Merged
1 commit merged into from
Jul 12, 2014
Merged

Pattern scan for Linux #2

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55 changes: 18 additions & 37 deletions Addresses.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -75,58 +75,39 @@ void CAddress::Initialize(eSAMPVersion sampVersion)
}
}
#else

FUNC_CConsole_AddStringVariable = FindPattern("\x55\x89\xE5\x56\x53\x83\xEC\x00\x8B\x75\x00\x85\xF6\x74\x00\x89\x34\x24", "xxxxxxx?xx?xxx?xxx");
FUNC_CConsole_SetStringVariable = FindPattern("\x55\x89\xE5\x83\xEC\x00\x89\x75\x00\x8B\x45\x00\x89\x7D\x00\x8B\x7D\x00\x89\x5D\x00\x89\x44\x24\x00\x8B\x45\x00", "xxxxx?xx?xx?xx?xx?xx?xxx?xx?");
FUNC_CConsole_SetIntVariable = FindPattern("\x74\x00\x83\x38\x00\x74\x00\xC9\x31\xC0\xC3\x8B\x40\x00\x8B\x00", "x?xx?x?xxxxxx?xx") - 0x1A;
FUNC_CConsole_ModifyVariableFlags = FindPattern("\x89\x04\x24\xE8\x00\x00\x00\x00\x85\xC0\x89\xC2\x74\x00\x8B\x45\x00", "xxxx????xxxxx?xx?") - 0x10;

FUNC_CFilterscripts_LoadFilterscript = FindPattern("\x89\x7D\x00\x8B\x45\x00\x8B\x7D\x00\x89\x5D\x00\x89\x44\x24\x00", "xx?xx?xx?xx?xxx?") - 0x9;
FUNC_CFilterscripts_UnLoadFilterscript = FindPattern("\x31\xF6\x53\x83\xEC\x00\x8B\x45\x00\x8B\x7D\x00\x89\xC3", "xxxxx?xx?xx?xx") - 0x5;

ADDR_CNetGame_GMX_GangZoneDelete = NULL;
FUNC_ContainsInvalidChars = FindPattern("\x53\x8B\x5D\x00\x0F\xB6\x0B\x84\xC9\x74\x00\x66\x90", "xxx?xxxxxx?xx") - 0x3;

switch(sampVersion)
{
case SAMP_VERSION_03Z:
{
VAR_pRestartWaitTime = 0x8150130;

FUNC_CConsole_AddStringVariable = 0x0809F590;
FUNC_CConsole_SetStringVariable = 0x0809EDB0;
FUNC_CConsole_SetIntVariable = 0x0809ED10;
FUNC_CConsole_ModifyVariableFlags = 0x0809EE60;

FUNC_CFilterscripts_LoadFilterscript = 0x0809FDB0;
FUNC_CFilterscripts_UnLoadFilterscript = 0x080A01E0;

ADDR_CNetGame_GMX_GangZoneDelete = NULL;
FUNC_ContainsInvalidChars = 0x080D2A50;
ADDR_RECEIVE_HOOKPOS = 0x80645D6;
VAR_pRestartWaitTime = 0x8150130;

ADDR_RECEIVE_HOOKPOS = 0x80645D6;
break;
}
case SAMP_VERSION_03Z_R2_2:
{
VAR_pRestartWaitTime = 0x8150B60;

FUNC_CConsole_AddStringVariable = 0x809F760;
FUNC_CConsole_SetStringVariable = 0x809F000;
FUNC_CConsole_SetIntVariable = 0x809EEE0;
FUNC_CConsole_ModifyVariableFlags = 0x809F030;

FUNC_CFilterscripts_LoadFilterscript = 0x0809FF80;
FUNC_CFilterscripts_UnLoadFilterscript = 0x080A03B0;
VAR_pRestartWaitTime = 0x8150B60;

ADDR_CNetGame_GMX_GangZoneDelete = NULL;
FUNC_ContainsInvalidChars = 0x080D2F50;
ADDR_RECEIVE_HOOKPOS = 0x80645D6;
ADDR_RECEIVE_HOOKPOS = 0x80645D6;
break;
}
case SAMP_VERSION_03Z_R3:
{
VAR_pRestartWaitTime = 0x8150B60;
VAR_pRestartWaitTime = 0x8150B60;

FUNC_CConsole_AddStringVariable = 0x809F760;
FUNC_CConsole_SetStringVariable = 0x809F000;
FUNC_CConsole_SetIntVariable = 0x809EEE0;
FUNC_CConsole_ModifyVariableFlags = 0x809F030;

FUNC_CFilterscripts_LoadFilterscript = 0x0809FF80; // done
FUNC_CFilterscripts_UnLoadFilterscript = 0x080A03B0; // done

ADDR_CNetGame_GMX_GangZoneDelete = NULL;
FUNC_ContainsInvalidChars = 0x080D2F50;
ADDR_RECEIVE_HOOKPOS = 0x80645D6;
ADDR_RECEIVE_HOOKPOS = 0x80645D6;
break;
}
}
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57 changes: 28 additions & 29 deletions Hooks.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -109,39 +109,38 @@ void AssemblyRedirect(void * from, void * to, char * ret)
AssemblySwap((char *)from, ret, 5);
}

#ifdef WIN32
DWORD FindPattern(char *pattern, char *mask)
{
#ifdef WIN32
MODULEINFO mInfo = {0};
GetModuleInformation(GetCurrentProcess(), GetModuleHandle(NULL), &mInfo, sizeof(MODULEINFO));
DWORD base = (DWORD)mInfo.lpBaseOfDll;
DWORD size = (DWORD)mInfo.SizeOfImage;
#else
#endif
DWORD patternLength = (DWORD)strlen(mask);
for(DWORD i = 0; i < size - patternLength; i++)
DWORD i;
DWORD size;
DWORD address;
#ifdef WIN32
MODULEINFO info = { 0 };

address = (DWORD)GetModuleHandle(NULL);
GetModuleInformation(GetCurrentProcess(), GetModuleHandle(NULL), &info, sizeof(MODULEINFO));
size = (DWORD)info.SizeOfImage;
#else
address = 0x804b480; // around the elf base
size = 0x8128B80 - address;
#endif
for(i = 0; i < size; ++i)
{
bool found = true;
for(DWORD j = 0; j < patternLength; j++)
{
found &= mask[j] == '?' || pattern[j] == *(char*)(base + i + j);
}

if(found)
{
return base + i;
}
if(memory_compare((BYTE *)(address + i), (BYTE *)pattern, mask))
return (DWORD)(address + i);
}

return NULL;
}
#endif
return 0;
}

bool memory_compare(const BYTE *data, const BYTE *pattern, const char *mask)
{
for(; *mask; ++mask, ++data, ++pattern)
{
if(*mask == 'x' && *data != *pattern)
return false;
}
return (*mask) == NULL;
}

// From "amx.c", part of the PAWN language runtime:
// http://code.google.com/p/pawnscript/source/browse/trunk/amx/amx.c
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4 changes: 2 additions & 2 deletions Hooks.h
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@

#include "SDK/amx/amx.h"
#include "SDK/plugincommon.h"
#include "CTypes.h"
#include "Inlines.h"

// Hopefully this will be optimised out
Expand All @@ -19,9 +20,8 @@ void AssemblyRedirect(void * from, void * to, char * ret);

void Redirect(AMX * amx, char const * const from, ucell to, AMX_NATIVE * store);

#ifdef WIN32
DWORD FindPattern(char *pattern, char *mask);
#endif
bool memory_compare(BYTE *data, const BYTE *pattern, const char *mask);

bool YSF_ContainsInvalidChars(char * szString);
void GetAddresses();
Expand Down