Syscallslib: a library that automates some clean syscalls to make it easier & faster to implement. its pretty basic code, im using hellsgate (TartarusGate) tech to fetch direct syscalls, and it saves times when needed.

So Far The Syscalls Supported :

• NtAllocateVirtualMemory /2
• NtProtectVirtualMemory
• NtCreateSection
• NtOpenSection
• NtMapViewOfSection
• NtUnmapViewOfSection
• NtClose
• NtWriteVirtualMemory
• NtCreateUserProcess /2
• NtQuerySystemInformation

Usage :

• initialize the struct holding the hashes of the syscalls names using InitializeStruct(), it takes 2 parameters, the seed used, and a pointer to HashStruct struct:
• to automates this even more, i included Hasher.c file that can output the hashes of the syscalls directly ...
• after that you are ready to do syscalls
• added a small project to demonstrate the usage here.

#include <Windows.h>
#include <stdio.h>
#include "Syscalls.h"

#pragma comment (lib, "Syscalls.lib")


// generated using hasher.c (Seed = 7)
#define NtAllocateVirtualMemory_StrHashed       0x014044AE
#define NtProtectVirtualMemory_StrHashed        0xE67C7320
#define NtCreateSection_StrHashed               0xAC2EDA02
#define NtOpenSection_StrHashed                 0xD443EC8C
#define NtMapViewOfSection_StrHashed            0x92DD00B3
#define NtUnmapViewOfSection_StrHashed          0x12D71086
#define NtClose_StrHashed                       0x7B3F64A4


int main() {

	NTSTATUS	STATUS		= NULL;
	PVOID		pAddress	= NULL;
	


	HashStruct SyscallHashStruct = {

	.NtAllocateVirtualMemory_Hash   = NtAllocateVirtualMemory_StrHashed,
	.NtProtectVirtualMemory_Hash	= NtProtectVirtualMemory_StrHashed,
	.NtCreateSection_Hash		= NtCreateSection_StrHashed,
	.NtOpenSection_Hash		= NtOpenSection_StrHashed,
	.NtMapViewOfSection_Hash	= NtMapViewOfSection_StrHashed,
	.NtUnmapViewOfSection_Hash	= NtUnmapViewOfSection_StrHashed,
	.NtClose_Hash			= NtClose_StrHashed,

	};


	if (!InitializeStruct(0x07, &SyscallHashStruct)) {
		printf("[-] InitializeStruct Failed \n");
		goto _exit;
	}


	pAddress = NtAllocateVirtualMemory2(0x100, &STATUS);
	if (pAddress == NULL) {
		printf("[-] Error Occured : 0x%0.8X \n", STATUS);
		goto _exit;
	}
	printf("[+] pAddress : 0x%p \n", pAddress);




_exit:
	printf("[i] Press <Enter> To Quit ... ");
	getchar();
	return 0;
}

TODO:

• Add support for more usefull syscalls

Thanks For:

• TartarusGate
• HellsGate