mirror of
https://github.com/rapid7/metasploit-payloads
synced 2025-03-24 18:16:24 +01:00
58 lines
1.4 KiB
C
Executable File
58 lines
1.4 KiB
C
Executable File
/*!
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* @file common.c
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* @brief Definitions for various common components used across the Meterpreter suite.
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*/
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#include "common.h"
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#define SLEEP_MAX_SEC (MAXDWORD / 1000)
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/*!
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* @brief Returns a unix timestamp in UTC.
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* @return Integer value representing the UTC Unix timestamp of the current time.
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*/
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int current_unix_timestamp(void) {
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SYSTEMTIME system_time;
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FILETIME file_time;
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ULARGE_INTEGER ularge;
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GetSystemTime(&system_time);
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SystemTimeToFileTime(&system_time, &file_time);
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ularge.LowPart = file_time.dwLowDateTime;
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ularge.HighPart = file_time.dwHighDateTime;
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return (long)((ularge.QuadPart - 116444736000000000) / 10000000L);
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}
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/*!
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* @brief Sleep for the given number of seconds.
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* @param seconds DWORD value representing the number of seconds to sleep.
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* @remark This was implemented so that extended sleep times can be used (beyond the
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* 49 day limit imposed by Sleep()).
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*/
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VOID sleep(DWORD seconds)
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{
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while (seconds > SLEEP_MAX_SEC)
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{
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Sleep(SLEEP_MAX_SEC * 1000);
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seconds -= SLEEP_MAX_SEC;
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}
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Sleep(seconds * 1000);
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}
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VOID xor_bytes(DWORD xorKey, LPBYTE buffer, DWORD bufferSize)
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{
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static BOOL initialised = FALSE;
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if (!initialised)
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{
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srand((unsigned int)time(NULL));
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initialised = TRUE;
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}
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LPBYTE xor = (LPBYTE)&xorKey;
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for (DWORD i = 0; i < bufferSize; ++i)
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{
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buffer[i] ^= xor[i % sizeof(DWORD)];
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}
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}
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