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_resolvepointers
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@tomvita
tomvita committed Dec 3, 2020
1 parent 6be2b2d commit 04d35c6
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Showing 8 changed files with 117 additions and 69 deletions.
6 changes: 5 additions & 1 deletion server/source/noexs/.vscode/settings.json
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Expand Up @@ -7,7 +7,11 @@
"string": "cpp",
"vector": "cpp",
"system_error": "cpp",
"array": "cpp"
"array": "cpp",
"string_view": "cpp",
"initializer_list": "cpp",
"ranges": "cpp",
"utility": "cpp"
},
"C_Cpp.clang_format_fallbackStyle": "{ BasedOnStyle: LLVM, UseTab: Never, IndentWidth: 4, TabWidth: 4, BreakBeforeBraces: Attach, AllowShortIfStatementsOnASingleLine: false, IndentCaseLabels: false, ColumnLimit: 0, AccessModifierOffset: -4 }"
}
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2 changes: 1 addition & 1 deletion server/source/noexs/include/gecko.h
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Expand Up @@ -12,7 +12,7 @@

#define VER_MAJOR (1)
#define VER_MINOR (1)
#define VER_PATCH (152)
#define VER_PATCH (153)

#define GECKO_BUFFER_SIZE (2048 * 32)
#define GECKO_BUFFER_SIZE2 (2048 * 4)
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178 changes: 111 additions & 67 deletions server/source/noexs/source/commands.cpp
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Expand Up @@ -57,6 +57,72 @@ Result writeCompressed(Gecko::Context& ctx, u32 len) {
}
return 0;
}
static u64 m_heap_start, m_heap_end, m_main_start, m_main_end;
static bool m_32bitmode = false;
static u8 outbuffer[GECKO_BUFFER_SIZE * 9 / 8];
static FILE* g_memdumpFile = NULL;
// static FILE* g_bookmarkFile = NULL;
#define HEADERSIZE 135
enum t_searchsize {
_8, _16, _32, _64
};
enum t_searchtype {
EQ, RANGE
// GT,NE,
// LT,
// SAME,
// DIFF,
// INC,
// DEC
};
#define outbuffer_offset GECKO_BUFFER_SIZE / 8
#define NEQvalue(t,k) (t)m_value1 != *reinterpret_cast<t *>(&ctx.buffer[i+k])
#define NRGvalue(t,k) (t)m_value1 > *reinterpret_cast<t *>(&ctx.buffer[i+k]) && (t)m_value2 < *reinterpret_cast<t *>(&ctx.buffer[i+k])

static Result getmeminfo(Gecko::Context& ctx) {
Result rc = 0;
u64 addr;
u32 requestCount;
u32 count = 0;
MemoryInfo info = {};
addr = 0;
requestCount = 15000;
m_heap_start = 0;
m_main_start = 0;
u32 mod = 0;
for(count = 0; count < requestCount; count++){
if (dmnt) rc = dmntchtQueryCheatProcessMemory(&info, addr);
else rc =ctx.dbg.query(&info, addr);
// printf("info.addr %lx ,info.size %lx ,info.type %x\n",info.addr,info.size,info.type );
if (info.type == MemType_Heap){
if (m_heap_start == 0) m_heap_start = info.addr;
m_heap_end = info.addr + info.size;
}
if (info.type == MemType_CodeStatic && info.perm == Perm_Rx){
if (mod == 1) m_main_start = info.addr;
mod += 1;
}
if (info.type == MemType_CodeMutable){
if (mod ==2 ) m_main_end = info.addr + info.size;
}
if (info.addr + info.size == 0x8000000000 || R_FAILED(rc)) {
break;
}
if (info.type == 0x10 || R_FAILED(rc)) {
break;
}
addr += info.size;
};
if ((m_main_end | m_heap_end) & 0xFFFFFFFF00000000)
m_32bitmode = false;
else
m_32bitmode = true;
printf("Count = %d\n", count);
if (m_32bitmode)
printf("32bitmode\n");
printf("(m_main_end | m_heap_end) & 0xFFFFFFFF00000000 = %lx\n ",(m_main_end | m_heap_end) & 0xFFFFFFFF00000000);
return rc;
}

//0x01
static Result _status(Gecko::Context& ctx){
Expand Down Expand Up @@ -214,6 +280,9 @@ static Result _attach(Gecko::Context& ctx){
}
}
}
if (R_SUCCEEDED(rc)) {
rc = getmeminfo(ctx);
}
return rc;
}

Expand Down Expand Up @@ -386,72 +455,6 @@ static Result _freeze_address(Gecko::Context& ctx){



static u64 m_heap_start, m_heap_end, m_main_start, m_main_end;
static bool m_32bitmode = false;
static u8 outbuffer[GECKO_BUFFER_SIZE * 9 / 8];
static FILE* g_memdumpFile = NULL;
// static FILE* g_bookmarkFile = NULL;
#define HEADERSIZE 135
enum t_searchsize {
_8, _16, _32, _64
};
enum t_searchtype {
EQ, RANGE
// GT,NE,
// LT,
// SAME,
// DIFF,
// INC,
// DEC
};
#define outbuffer_offset GECKO_BUFFER_SIZE / 8
#define NEQvalue(t,k) (t)m_value1 != *reinterpret_cast<t *>(&ctx.buffer[i+k])
#define NRGvalue(t,k) (t)m_value1 > *reinterpret_cast<t *>(&ctx.buffer[i+k]) && (t)m_value2 < *reinterpret_cast<t *>(&ctx.buffer[i+k])

static Result getmeminfo(Gecko::Context& ctx) {
Result rc = 0;
u64 addr;
u32 requestCount;
u32 count = 0;
MemoryInfo info = {};
addr = 0;
requestCount = 15000;
m_heap_start = 0;
m_main_start = 0;
u32 mod = 0;
for(count = 0; count < requestCount; count++){
if (dmnt) rc = dmntchtQueryCheatProcessMemory(&info, addr);
else rc =ctx.dbg.query(&info, addr);
// printf("info.addr %lx ,info.size %lx ,info.type %x\n",info.addr,info.size,info.type );
if (info.type == MemType_Heap){
if (m_heap_start == 0) m_heap_start = info.addr;
m_heap_end = info.addr + info.size;
}
if (info.type == MemType_CodeStatic && info.perm == Perm_Rx){
if (mod == 1) m_main_start = info.addr;
mod += 1;
}
if (info.type == MemType_CodeMutable){
if (mod ==2 ) m_main_end = info.addr + info.size;
}
if (info.addr + info.size == 0x8000000000 || R_FAILED(rc)) {
break;
}
if (info.type == 0x10 || R_FAILED(rc)) {
break;
}
addr += info.size;
};
if ((m_main_end | m_heap_end) & 0xFFFFFFFF00000000)
m_32bitmode = false;
else
m_32bitmode = true;
printf("Count = %d\n", count);
if (m_32bitmode)
printf("32bitmode\n");
printf("(m_main_end | m_heap_end) & 0xFFFFFFFF00000000 = %lx\n ",(m_main_end | m_heap_end) & 0xFFFFFFFF00000000);
return rc;
}

static Result process(Gecko::Context &ctx, u64 m_start, u64 m_end) {
Result rc = 0;
Expand Down Expand Up @@ -770,14 +773,55 @@ static Result _putbookmark(Gecko::Context& ctx){
static Result _dmnt_resume(Gecko::Context& ctx){
return dmntchtResumeCheatProcess();
}
//0x1E
static Result _resolvepointers(Gecko::Context &ctx) {
printf("resolve pointers\n");
Result rc=0;
u32 size, offset;
s16 depth,j;
u64 address=0, value;
READ_CHECKED(ctx, size);
printf("size %d\n",size);
for (u32 idx = 0; idx < size; idx++) {
READ_CHECKED(ctx, depth);
printf("depth %d\n",depth);
if (depth > 0) { //main case
value = m_main_start; // need to initialise this value with attach
} else { //heap case
value = m_heap_start;
depth = -depth;
}
for (j = 0; j < depth; j++) {
printf("value %lx\n",value);
READ_CHECKED(ctx, offset);
printf("offset %x\n",offset);
address = value + offset;
printf("address %lx\n",address);
if (dmnt)
rc = dmntchtReadCheatProcessMemory(address, ctx.buffer, 8);
else
rc = ctx.dbg.readMem(ctx.buffer, address, 8);
if(R_FAILED(rc)){
break;
}
value = *reinterpret_cast<u64 *>(&ctx.buffer[0]);
}
printf("value %lx\n",value);
WRITE_CHECKED(ctx, idx); //4
WRITE_CHECKED(ctx, j); //2
WRITE_CHECKED(ctx, address); //8
WRITE_CHECKED(ctx, value); //8
}
return rc;
}

Result cmd_decode(Gecko::Context& ctx, int cmd){
static Result (*cmds[287])(Gecko::Context &) = {NULL, _status, _poke8, _poke16, _poke32, _poke64, _readmem,
_writemem, _resume, _pause, _attach, _detatch, _querymem_single,
_querymem_multi, _current_pid, _attached_pid, _list_pids,
_get_titleid, _disconnect, _readmem_multi, _set_breakpoint, _freeze_address,
_search_local, _fetch_result, _detach_dmnt, _dump_ptr, _attach_dmnt,
_getbookmark, _putbookmark, _dmnt_resume};
_getbookmark, _putbookmark, _dmnt_resume, _resolvepointers};
Result rc = 0;
if(cmds[cmd]){
rc = cmds[cmd](ctx);
Expand Down

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