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Added peekmem! command #9

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Added peekmem! command #9

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1 change: 1 addition & 0 deletions docs/commands/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
| Command | Description |
| ------- | ----------- |
| **dumpmem!** | Dumps the whole 64MB physical memory map to `E:\DEVKIT\dxt\memdump.bin` |
| **peekmem!** _addr_ | Reads a DWORD (4 bytes) from the specified address. |
| **pokemem!** _addr value_ | Writes a specified DWORD (4 bytes) to the specified address. |
| **freezemem!** _addr value_ | Same as pokemem, but instead freezes the specified address with the written value. |
| **startsearch!** _equals/not-equals/less-than/greater-than/unknown value_ | Begins a conditional or unknown search for memory values. Restarts any existing search. |
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1 change: 1 addition & 0 deletions plugin/main.c
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Expand Up @@ -28,6 +28,7 @@ static VOID NTAPI cheat_thread(PKSTART_ROUTINE StartRoutine, PVOID StartContext)

void DxtEntry(ULONG *pfUnload) {
DmRegisterCommandProcessor("DUMPMEM", dump_memory);
DmRegisterCommandProcessor("PEEKMEM", peek_memory);
DmRegisterCommandProcessor("POKEMEM", poke_memory);
DmRegisterCommandProcessor("FREEZEMEM", freeze_memory);
DmRegisterCommandProcessor("STARTSEARCH", start_search);
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17 changes: 17 additions & 0 deletions plugin/memfuncs.c
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Expand Up @@ -32,6 +32,23 @@ HRESULT __stdcall freeze_memory(LPCSTR szCommand, LPSTR szResp, DWORD cchResp, P
return XBDM_NOERR;
}

HRESULT __stdcall peek_memory(LPCSTR szCommand, LPSTR szResp, DWORD cchResp, PDM_CMDCONT pdmcc) {
char code_address_buf[16];
DWORD code_address;

sscanf(szCommand, "peekmem! %s", code_address_buf);

code_address = strtol(code_address_buf, NULL, 16);

PVOID addr = MmMapIoSpace(code_address, 4, PAGE_READWRITE);

sprintf(szResp, "%08X", *(DWORD*)addr);

MmUnmapIoSpace(addr, 4);

return XBDM_NOERR;
}

HRESULT __stdcall poke_memory(LPCSTR szCommand, LPSTR szResp, DWORD cchResp, PDM_CMDCONT pdmcc) {
char code_address_buf[16], val_buf[16];
DWORD code_address, val;
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1 change: 1 addition & 0 deletions plugin/memfuncs.h
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Expand Up @@ -13,6 +13,7 @@ void add_freeze_entry(DWORD address, DWORD val);
void apply_freeze_entries();

HRESULT __stdcall dump_memory(LPCSTR szCommand, LPSTR szResp, DWORD cchResp, PDM_CMDCONT pdmcc);
HRESULT __stdcall peek_memory(LPCSTR szCommand, LPSTR szResp, DWORD cchResp, PDM_CMDCONT pdmcc);
HRESULT __stdcall poke_memory(LPCSTR szCommand, LPSTR szResp, DWORD cchResp, PDM_CMDCONT pdmcc);
HRESULT __stdcall freeze_memory(LPCSTR szCommand, LPSTR szResp, DWORD cchResp, PDM_CMDCONT pdmcc);

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