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PROJECT: updated todo list 

BRIDGE: added FUNCTION structure to the ADDRINFO structure
DBG: fixed some potential buffer overflows in modname variables
DBG: added 'functions' to the database (functionfromaddr, functionoverlaps, functionadd)
DBG: added 'functionadd' command ("functionadd startAddr,endAddr")
DBG: FINALLY fixed this non-silent bug in mathfromstring
GUI: re-enabled Function_single drawing
This commit is contained in:
mr.exodia 2013-12-27 20:54:10 +01:00
parent be36241a69
commit bdecbc6458
13 changed files with 174 additions and 26 deletions
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3
todo_dbg.txt
View File

@ -1,4 +1,4 @@
- attach/detach debugger
- detach debugger
- asm command
- memcpy
- pe data access
@ -69,7 +69,6 @@
- find all intermodular calls
- highlight register changes (only when CIP changed also)
- PAGE UP + PAGE DOWN keys in disasm
- function lines database for analysis
- 'dead' bytes custom analysis
- loops lines database for analysis
- enable/disable hw+mem breakpoint

22
x64_dbg_bridge/bridgemain.cpp
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@ -378,16 +378,20 @@ BRIDGE_IMPEXP bool DbgCmdExecDirect(const char* cmd)
BRIDGE_IMPEXP FUNCTYPE DbgGetFunctionTypeAt(duint addr)
{
//NOTE: test code for 'function.exe'
if(addr==0x0040132A)
return FUNC_BEGIN;
else if(addr>0x0040132A && addr<0x004013BA)
return FUNC_MIDDLE;
else if(addr==0x004013BA)
return FUNC_END;
else if(addr==0x004013BB)
ADDRINFO info;
memset(&info, 0, sizeof(info));
info.flags=flagfunction;
if(!_dbg_addrinfoget(addr, SEG_DEFAULT, &info))
return FUNC_NONE;
duint start=info.function.start;
duint end=info.function.end;
if(start==end)
return FUNC_SINGLE;
return FUNC_NONE;
else if(addr==start)
return FUNC_BEGIN;
else if(addr==end)
return FUNC_END;
return FUNC_MIDDLE;
}
BRIDGE_IMPEXP LOOPTYPE DbgGetLoopTypeAt(duint addr, int depth)

12
x64_dbg_bridge/bridgemain.h
View File

@ -84,7 +84,8 @@ enum ADDRINFOFLAGS
flagmodule=1,
flaglabel=2,
flagcomment=4,
flagbookmark=8
flagbookmark=8,
flagfunction=16
};
enum BPXTYPE
@ -144,13 +145,20 @@ struct BPMAP
BRIDGEBP* bp;
};
struct FUNCTION
{
duint start;
duint end;
};
struct ADDRINFO
{
int flags; //ADDRINFOFLAGS
char module[MAX_MODULE_SIZE]; //module the address is in
char label[MAX_LABEL_SIZE];
char comment[MAX_COMMENT_SIZE];
bool isbookmark;
int flags; //ADDRINFOFLAGS
FUNCTION function;
};
struct FLAGS

2
x64_dbg_bridge/x64_dbg_bridge.cbp
View File

@ -39,7 +39,7 @@
</Build>
<Compiler>
<Add option="-Wall" />
<Add option="-fexceptions" />
<Add option="-fexceptions -Wno-format" />
<Add option="-DBUILD_BRIDGE" />
</Compiler>
<Linker>

5
x64_dbg_dbg/_exports.cpp
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@ -213,6 +213,11 @@ extern "C" DLL_EXPORT bool _dbg_addrinfoget(duint addr, SEGMENTREG segment, ADDR
addrinfo->isbookmark=bookmarkget(addr);
retval=true;
}
if(addrinfo->flags&flagfunction)
{
if(functionfromaddr(addr, &addrinfo->function.start, &addrinfo->function.end))
retval=true;
}
return retval;
}

114
x64_dbg_dbg/addrinfo.cpp
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@ -26,6 +26,8 @@ void dbinit()
dprintf("SQL Error: %s\n", sqllasterror());
if(!sqlexec(userdb, "CREATE TABLE IF NOT EXISTS breakpoints (id INTEGER PRIMARY KEY AUTOINCREMENT, addr INT64 NOT NULL, enabled INT NOT NULL, singleshoot INT NOT NULL, oldbytes INT NOT NULL, type INT NOT NULL, titantype INT NOT NULL, mod TEXT, name TEXT)"))
dprintf("SQL Error: %s\n", sqllasterror());
if(!sqlexec(userdb, "CREATE TABLE IF NOT EXISTS functions (id INTEGER PRIMARY KEY AUTOINCREMENT, mod TEXT, start INT64 NOT NULL, end INT64 NOT NULL, manual BOOL NOT NULL)"))
dprintf("SQL Error: %s\n", sqllasterror());
dbsave();
bpenumall(0); //update breakpoint list
GuiUpdateBreakpointsView();
@ -185,7 +187,7 @@ bool apienumexports(uint base, EXPORTENUMCALLBACK cbEnum)
unsigned int NumberOfNames=export_dir.NumberOfNames;
if(!export_dir.NumberOfFunctions or !NumberOfNames) //no named exports
return false;
char modname[256]="";
char modname[MAX_MODULE_SIZE]="";
modnamefromaddr(base, modname, true);
uint original_name_va=export_dir.Name+base;
char original_name[deflen]="";
@ -248,7 +250,7 @@ bool commentset(uint addr, const char* text)
return commentdel(addr);
char commenttext[MAX_COMMENT_SIZE]="";
sqlstringescape(text, commenttext);
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //comments without module
{
@ -282,7 +284,7 @@ bool commentget(uint addr, char* text)
{
if(!IsFileBeingDebugged() or !memisvalidreadptr(fdProcessInfo->hProcess, addr) or !text)
return false;
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //comments without module
sprintf(sql, "SELECT text FROM comments WHERE mod IS NULL AND addr=%"fext"d", addr);
@ -295,7 +297,7 @@ bool commentdel(uint addr)
{
if(!IsFileBeingDebugged() or !memisvalidreadptr(fdProcessInfo->hProcess, addr))
return false;
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //comments without module
sprintf(sql, "SELECT id FROM comments WHERE mod IS NULL AND addr=%"fext"d", addr);
@ -328,7 +330,7 @@ bool labelset(uint addr, const char* text)
return labeldel(addr);
char labeltext[MAX_LABEL_SIZE]="";
sqlstringescape(text, labeltext);
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //labels without module
{
@ -398,7 +400,7 @@ bool labelget(uint addr, char* text)
{
if(!IsFileBeingDebugged() or !memisvalidreadptr(fdProcessInfo->hProcess, addr) or !text)
return false;
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //labels without module
sprintf(sql, "SELECT text FROM labels WHERE mod IS NULL AND addr=%"fext"d", addr);
@ -411,7 +413,7 @@ bool labeldel(uint addr)
{
if(!IsFileBeingDebugged() or !memisvalidreadptr(fdProcessInfo->hProcess, addr))
return false;
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //labels without module
sprintf(sql, "SELECT id FROM labels WHERE mod IS NULL AND addr=%"fext"d", addr);
@ -440,7 +442,7 @@ bool bookmarkset(uint addr)
{
if(!IsFileBeingDebugged() or !memisvalidreadptr(fdProcessInfo->hProcess, addr))
return false;
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //bookmarks without module
{
@ -474,7 +476,7 @@ bool bookmarkget(uint addr)
{
if(!IsFileBeingDebugged() or !memisvalidreadptr(fdProcessInfo->hProcess, addr))
return false;
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //bookmarks without module
sprintf(sql, "SELECT * FROM bookmarks WHERE mod IS NULL AND addr=%"fext"d", addr);
@ -487,7 +489,7 @@ bool bookmarkdel(uint addr)
{
if(!IsFileBeingDebugged() or !memisvalidreadptr(fdProcessInfo->hProcess, addr))
return false;
char modname[35]="";
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
if(!modnamefromaddr(addr, modname, true)) //bookmarks without module
sprintf(sql, "SELECT id FROM bookmarks WHERE mod IS NULL AND addr=%"fext"d", addr);
@ -525,3 +527,95 @@ bool symfromname(const char* name, uint* addr)
*addr=(uint)pSymbol->Address;
return true;
}
///function functions :D
bool functionfromaddr(duint addr, duint* start, duint* end)
{
if(!IsFileBeingDebugged() or !memisvalidreadptr(fdProcessInfo->hProcess, addr))
return false;
char modname[MAX_MODULE_SIZE]="";
char sql[deflen]="";
uint modbase=0;
if(!modnamefromaddr(addr, modname, true))
sprintf(sql, "SELECT start,end FROM functions WHERE mod IS NULL AND start<=%"fext"d AND end>=%"fext"d", addr, addr);
else
{
modbase=modbasefromaddr(addr);
uint rva=addr-modbase;
sprintf(sql, "SELECT start,end FROM functions WHERE mod='%s' AND start<=%"fext"d AND end>=%"fext"d", modname, rva, rva);
}
if(addr==0x7758100F)
puts(sql);
sqlite3_stmt* stmt;
if(sqlite3_prepare_v2(userdb, sql, -1, &stmt, 0)!=SQLITE_OK)
{
sqlite3_finalize(stmt);
return false;
}
if(sqlite3_step(stmt)!=SQLITE_ROW)
{
sqlite3_finalize(stmt);
return false;
}
#ifdef _WIN64
uint dbstart=sqlite3_column_int64(stmt, 0)+modbase; //start
uint dbend=sqlite3_column_int64(stmt, 1)+modbase; //end
#else
uint dbstart=sqlite3_column_int(stmt, 0)+modbase; //addr
uint dbend=sqlite3_column_int(stmt, 1)+modbase; //end
#endif // _WIN64
sqlite3_finalize(stmt);
if(start)
*start=dbstart;
if(end)
*end=dbend;
return true;
}
bool functionoverlaps(uint start, uint end)
{
char sql[deflen]="";
char modname[MAX_MODULE_SIZE]="";
//check for function overlaps
if(!modnamefromaddr(start, modname, true))
sprintf(sql, "SELECT manual FROM functions WHERE mod IS NULL AND start<=%"fext"d AND end>=%"fext"d", end, start);
else
{
uint modbase=modbasefromaddr(start);
sprintf(sql, "SELECT manual FROM functions WHERE mod='%s' AND start<=%"fext"d AND end>=%"fext"d", modname, end-modbase, start-modbase);
}
if(sqlhasresult(userdb, sql)) //functions overlap
return true;
return false;
}
bool functionadd(uint start, uint end, bool manual)
{
if(!IsFileBeingDebugged() or end<start or memfindbaseaddr(fdProcessInfo->hProcess, start, 0)!=memfindbaseaddr(fdProcessInfo->hProcess, end, 0)) //the function boundaries are not in the same mem page
return false;
char sql[deflen]="";
char modname[MAX_MODULE_SIZE]="";
uint modbase=0;
//check for function overlaps
if(!modnamefromaddr(start, modname, true))
sprintf(sql, "SELECT manual FROM functions WHERE mod IS NULL AND start<=%"fext"d AND end>=%"fext"d", end, start);
else
{
modbase=modbasefromaddr(start);
sprintf(sql, "SELECT manual FROM functions WHERE mod='%s' AND start<=%"fext"d AND end>=%"fext"d", modname, end-modbase, start-modbase);
}
if(sqlhasresult(userdb, sql)) //functions overlap
return false;
if(modbase)
sprintf(sql, "INSERT INTO functions (mod,start,end,manual) VALUES('%s',%"fext"d,%"fext"d,%d)", modname, start-modbase, end-modbase, manual);
else
sprintf(sql, "INSERT INTO functions (start,end,manual) VALUES(%"fext"d,%"fext"d,%d)", start, end, manual);
if(!sqlexec(userdb, sql))
{
dprintf("SQL Error: %s\nSQL Query: %s\n", sqllasterror(), sql);
return false;
}
GuiUpdateAllViews();
dbsave();
return true;
}

3
x64_dbg_dbg/addrinfo.h
View File

@ -40,5 +40,8 @@ bool bookmarkset(uint addr);
bool bookmarkget(uint addr);
bool bookmarkdel(uint addr);
bool symfromname(const char* name, uint* addr);
bool functionfromaddr(duint addr, duint* start, duint* end);
bool functionoverlaps(uint start, uint end);
bool functionadd(uint start, uint end, bool manual);
#endif // _ADDRINFO_H

18
x64_dbg_dbg/instruction.cpp
View File

@ -417,3 +417,21 @@ CMDRESULT cbAssemble(int argc, char* argv[])
GuiUpdateAllViews();
return STATUS_CONTINUE;
}
CMDRESULT cbFunction(int argc, char* argv[])
{
if(argc<3)
{
dputs("not enough arguments!");
return STATUS_ERROR;
}
uint start=0;
uint end=0;
if(!valfromstring(argv[1], &start, 0, 0, false, 0) or !valfromstring(argv[2], &end, 0, 0, false, 0))
return STATUS_ERROR;
if(functionadd(start, end, true))
dputs("function added!");
else
dputs("function NOT added...");
return STATUS_CONTINUE;
}

1
x64_dbg_dbg/instruction.h
View File

@ -20,5 +20,6 @@ CMDRESULT cbInstrBookmarkDel(int argc, char* argv[]);
CMDRESULT cbLoaddb(int argc, char* argv[]);
CMDRESULT cbSavedb(int argc, char* argv[]);
CMDRESULT cbAssemble(int argc, char* argv[]);
CMDRESULT cbFunction(int argc, char* argv[]);
#endif // _INSTRUCTIONS_H

4
x64_dbg_dbg/math.cpp
View File

@ -374,7 +374,7 @@ bool mathfromstring(const char* string, uint* value, int* value_size, bool* isva
}
if(!highestop)
{
if(!valfromstring(string, value, value_size, isvar, false, 0))
if(!valfromstring(string, value, value_size, isvar, silent, 0))
return false;
return true;
}
@ -392,7 +392,7 @@ bool mathfromstring(const char* string, uint* value, int* value_size, bool* isva
return false;
}
uint right=0;
if(!valfromstring(strright, &right, 0, 0, false, 0))
if(!valfromstring(strright, &right, 0, 0, silent, 0))
{
efree(strleft, "mathfromstring:strleft");
efree(strright, "mathfromstring:strright");

1
x64_dbg_dbg/x64_dbg.cpp
View File

@ -80,6 +80,7 @@ static void registercommands()
cmdnew(cmd, "asm", cbAssemble, true); //assemble instruction
cmdnew(cmd, "AttachDebugger\1attach", cbDebugAttach, false); //attach
//cmdnew(cmd, "DetachDebugger\1detach", cbDebugDetach, true); //detach
cmdnew(cmd, "functionadd\1function\1func", cbFunction, true); //function
}
static bool cbCommandProvider(char* cmd, int maxlen)

14
x64_dbg_gui/Project/Src/BasicView/Disassembly.cpp
View File

@ -218,6 +218,8 @@ QString Disassembly::paintContent(QPainter* painter, int_t rowBase, int rowOffse
switch(DbgGetFunctionTypeAt(cur_addr))
{
case FUNC_SINGLE:
funcType=Function_single;
break;
case FUNC_NONE:
funcType=Function_none;
break;
@ -670,6 +672,18 @@ int Disassembly::paintFunctionGraphic(QPainter* painter, int x, int y, Function_
}
switch(funcType)
{
case Function_single:
{
if(loop)
y_add=height/2+1;
painter->drawLine(x+x_add+line_width, y+y_add, x+x_add, y+y_add);
painter->drawLine(x+x_add, y+y_add, x+x_add, y+height-y_add-1);
if(loop)
y_add=height/2-1;
painter->drawLine(x+x_add, y+height-y_add, x+x_add+line_width, y+height-y_add);
}
break;
case Function_start:
{
if(loop)

1
x64_dbg_gui/Project/Src/BasicView/Disassembly.h
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@ -40,6 +40,7 @@ public:
enum Function_t
{
Function_none,
Function_single,
Function_start,
Function_middle,
Function_loop_entry,