Skip to content
BranchesTags

Latest commit

History

20 Commits

Folders and files

NameName
Last commit message
Last commit date
ShellcodeStdio
ShellcodeStdio
.gitattributes
.gitattributes
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md

Repository files navigation

ShellcodeStdio

An extensible framework for easily writing debuggable, compiler optimized, position independent, x86/x64 shellcode for windows platforms.

For basic usage see main.cpp

Suggested compiler options

C/C++ -> Optimization -> /O1, /Ob2, /Oi, /Os, /Oy-, /GL
C/C++ -> Code Generation -> /MT, /GS-, /Gy
Linker -> General -> /INCREMENTAL:NO

How do I use this?

When working with this framework, and coding shellcode in general, you'll have to keep a few things in mind:

  1. You must declare all your variables on the stack.
  2. Strings are no exception. This is how to create a char*, wchar_t* on the stack. Don't forget to null-terminate.
unsignedchar str[] = { 'E', 'x', 'a', 'm', 'p', 'l', 'e', 0 }; unsignedchar w_str[] = { 'E', 0, 'x', 0, 'a', 0, 'm', 0, 'p', 0, 'l', 0, 'e', 0, 0 };
  1. If you want to use an external function (i.e Windows API) you must first ensure the module containing the function is loaded into the current process.
  2. The second part of calling an external function is calling the DEFINE_FUNC_PTR or DEFINE_FWD_FUNC_PTR macro with the name of the module and the typedef of the function you want to call.
  3. Any forwarded functions will need to be defined using the DEFINE_FWD_FUNC_PTR macro.

Hello World Example

CHAR strUser32[] = { 'u','s','e','r','3','2','.','d','l','l',0 };
CHAR strMboxTitle[] = { 'S','h','e','l','l','S','t','d','i','o', 0 };
CHAR strMboxMsg[] = { 'H','e','l','l','o','', 'W','o','r','l','d','!',0 };
DEFINE_FUNC_PTR("kernel32.dll", LoadLibraryA);
LoadLibraryA(strUser32);
DEFINE_FUNC_PTR("user32.dll", MessageBoxA);
MessageBoxA(NULL, strMboxMsg, strMboxTitle, MB_OK);
DEFINE_FWD_FUNC_PTR("ntdll.dll", "RtlExitUserThread", ExitThread);
ExitThread(0);

Misc

  • If you wish to add a function you must keep it between the MalCodeBegin and MalCodeEnd markers.
  • Don't forget to call the ScStdio::MalCode() at some point, otherwise when compiling in release with the suggested switches, the code will optimized away.

ShellcodeStdio @ winternl.com Credit for cool macros: reddit.com/user/good_nickname

About

An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms.

Resources

Readme
GPL-2.0 license
Activity

Stars

533 stars

Watchers

16 watching

Forks

105 forks
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - jackullrich/ShellcodeStdio: An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms. · GitHub
Skip to content
BranchesTags
Latest commit
History
20 Commits
Folders and files
NameName
Last commit message
Last commit date
ShellcodeStdio
ShellcodeStdio
.gitattributes
.gitattributes
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
ShellcodeStdio
An extensible framework for easily writing debuggable, compiler optimized, position independent, x86/x64 shellcode for windows platforms.
For basic usage see main.cpp
Suggested compiler options
C/C++ -> Optimization -> /O1, /Ob2, /Oi, /Os, /Oy-, /GL
C/C++ -> Code Generation -> /MT, /GS-, /Gy
Linker -> General -> /INCREMENTAL:NO

How do I use this?
When working with this framework, and coding shellcode in general, you'll have to keep a few things in mind:
  1. You must declare all your variables on the stack.
  2. Strings are no exception. This is how to create a char*, wchar_t* on the stack. Don't forget to null-terminate.
unsignedchar str[] = { 'E', 'x', 'a', 'm', 'p', 'l', 'e', 0 }; unsignedchar w_str[] = { 'E', 0, 'x', 0, 'a', 0, 'm', 0, 'p', 0, 'l', 0, 'e', 0, 0 };
  1. If you want to use an external function (i.e Windows API) you must first ensure the module containing the function is loaded into the current process.
  2. The second part of calling an external function is calling the DEFINE_FUNC_PTR or DEFINE_FWD_FUNC_PTR macro with the name of the module and the typedef of the function you want to call.
  3. Any forwarded functions will need to be defined using the DEFINE_FWD_FUNC_PTR macro.
Hello World Example
CHAR strUser32[] = { 'u','s','e','r','3','2','.','d','l','l',0 };
CHAR strMboxTitle[] = { 'S','h','e','l','l','S','t','d','i','o', 0 };
CHAR strMboxMsg[] = { 'H','e','l','l','o','', 'W','o','r','l','d','!',0 };
DEFINE_FUNC_PTR("kernel32.dll", LoadLibraryA);
LoadLibraryA(strUser32);
DEFINE_FUNC_PTR("user32.dll", MessageBoxA);
MessageBoxA(NULL, strMboxMsg, strMboxTitle, MB_OK);
DEFINE_FWD_FUNC_PTR("ntdll.dll", "RtlExitUserThread", ExitThread);
ExitThread(0);
Misc
  • If you wish to add a function you must keep it between the MalCodeBegin and MalCodeEnd markers.
  • Don't forget to call the ScStdio::MalCode() at some point, otherwise when compiling in release with the suggested switches, the code will optimized away.
ShellcodeStdio @ winternl.com
Credit for cool macros: reddit.com/user/good_nickname
About
An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms.
Resources
Readme
GPL-2.0 license
Activity
Stars
533 stars
Watchers
16 watching
Forks
105 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - jackullrich/ShellcodeStdio: An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms. · GitHub
Skip to content
BranchesTags
Latest commit
History
20 Commits
Folders and files
NameName
Last commit message
Last commit date
ShellcodeStdio
ShellcodeStdio
.gitattributes
.gitattributes
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
ShellcodeStdio
An extensible framework for easily writing debuggable, compiler optimized, position independent, x86/x64 shellcode for windows platforms.
For basic usage see main.cpp
Suggested compiler options
C/C++ -> Optimization -> /O1, /Ob2, /Oi, /Os, /Oy-, /GL
C/C++ -> Code Generation -> /MT, /GS-, /Gy
Linker -> General -> /INCREMENTAL:NO

How do I use this?
When working with this framework, and coding shellcode in general, you'll have to keep a few things in mind:
  1. You must declare all your variables on the stack.
  2. Strings are no exception. This is how to create a char*, wchar_t* on the stack. Don't forget to null-terminate.
unsignedchar str[] = { 'E', 'x', 'a', 'm', 'p', 'l', 'e', 0 }; unsignedchar w_str[] = { 'E', 0, 'x', 0, 'a', 0, 'm', 0, 'p', 0, 'l', 0, 'e', 0, 0 };
  1. If you want to use an external function (i.e Windows API) you must first ensure the module containing the function is loaded into the current process.
  2. The second part of calling an external function is calling the DEFINE_FUNC_PTR or DEFINE_FWD_FUNC_PTR macro with the name of the module and the typedef of the function you want to call.
  3. Any forwarded functions will need to be defined using the DEFINE_FWD_FUNC_PTR macro.
Hello World Example
CHAR strUser32[] = { 'u','s','e','r','3','2','.','d','l','l',0 };
CHAR strMboxTitle[] = { 'S','h','e','l','l','S','t','d','i','o', 0 };
CHAR strMboxMsg[] = { 'H','e','l','l','o','', 'W','o','r','l','d','!',0 };
DEFINE_FUNC_PTR("kernel32.dll", LoadLibraryA);
LoadLibraryA(strUser32);
DEFINE_FUNC_PTR("user32.dll", MessageBoxA);
MessageBoxA(NULL, strMboxMsg, strMboxTitle, MB_OK);
DEFINE_FWD_FUNC_PTR("ntdll.dll", "RtlExitUserThread", ExitThread);
ExitThread(0);
Misc
  • If you wish to add a function you must keep it between the MalCodeBegin and MalCodeEnd markers.
  • Don't forget to call the ScStdio::MalCode() at some point, otherwise when compiling in release with the suggested switches, the code will optimized away.
ShellcodeStdio @ winternl.com
Credit for cool macros: reddit.com/user/good_nickname
About
An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms.
Resources
Readme
GPL-2.0 license
Activity
Stars
533 stars
Watchers
16 watching
Forks
105 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - jackullrich/ShellcodeStdio: An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms. · GitHub
Skip to content
BranchesTags
Latest commit
History
20 Commits
Folders and files
NameName
Last commit message
Last commit date
ShellcodeStdio
ShellcodeStdio
.gitattributes
.gitattributes
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
ShellcodeStdio
An extensible framework for easily writing debuggable, compiler optimized, position independent, x86/x64 shellcode for windows platforms.
For basic usage see main.cpp
Suggested compiler options
C/C++ -> Optimization -> /O1, /Ob2, /Oi, /Os, /Oy-, /GL
C/C++ -> Code Generation -> /MT, /GS-, /Gy
Linker -> General -> /INCREMENTAL:NO

How do I use this?
When working with this framework, and coding shellcode in general, you'll have to keep a few things in mind:
  1. You must declare all your variables on the stack.
  2. Strings are no exception. This is how to create a char*, wchar_t* on the stack. Don't forget to null-terminate.
unsignedchar str[] = { 'E', 'x', 'a', 'm', 'p', 'l', 'e', 0 }; unsignedchar w_str[] = { 'E', 0, 'x', 0, 'a', 0, 'm', 0, 'p', 0, 'l', 0, 'e', 0, 0 };
  1. If you want to use an external function (i.e Windows API) you must first ensure the module containing the function is loaded into the current process.
  2. The second part of calling an external function is calling the DEFINE_FUNC_PTR or DEFINE_FWD_FUNC_PTR macro with the name of the module and the typedef of the function you want to call.
  3. Any forwarded functions will need to be defined using the DEFINE_FWD_FUNC_PTR macro.
Hello World Example
CHAR strUser32[] = { 'u','s','e','r','3','2','.','d','l','l',0 };
CHAR strMboxTitle[] = { 'S','h','e','l','l','S','t','d','i','o', 0 };
CHAR strMboxMsg[] = { 'H','e','l','l','o','', 'W','o','r','l','d','!',0 };
DEFINE_FUNC_PTR("kernel32.dll", LoadLibraryA);
LoadLibraryA(strUser32);
DEFINE_FUNC_PTR("user32.dll", MessageBoxA);
MessageBoxA(NULL, strMboxMsg, strMboxTitle, MB_OK);
DEFINE_FWD_FUNC_PTR("ntdll.dll", "RtlExitUserThread", ExitThread);
ExitThread(0);
Misc
  • If you wish to add a function you must keep it between the MalCodeBegin and MalCodeEnd markers.
  • Don't forget to call the ScStdio::MalCode() at some point, otherwise when compiling in release with the suggested switches, the code will optimized away.
ShellcodeStdio @ winternl.com
Credit for cool macros: reddit.com/user/good_nickname
About
An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms.
Resources
Readme
GPL-2.0 license
Activity
Stars
533 stars
Watchers
16 watching
Forks
105 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - jackullrich/ShellcodeStdio: An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms. · GitHub
Skip to content
BranchesTags
Latest commit
History
20 Commits
Folders and files
NameName
Last commit message
Last commit date
ShellcodeStdio
ShellcodeStdio
.gitattributes
.gitattributes
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
ShellcodeStdio
An extensible framework for easily writing debuggable, compiler optimized, position independent, x86/x64 shellcode for windows platforms.
For basic usage see main.cpp
Suggested compiler options
C/C++ -> Optimization -> /O1, /Ob2, /Oi, /Os, /Oy-, /GL
C/C++ -> Code Generation -> /MT, /GS-, /Gy
Linker -> General -> /INCREMENTAL:NO

How do I use this?
When working with this framework, and coding shellcode in general, you'll have to keep a few things in mind:
  1. You must declare all your variables on the stack.
  2. Strings are no exception. This is how to create a char*, wchar_t* on the stack. Don't forget to null-terminate.
unsignedchar str[] = { 'E', 'x', 'a', 'm', 'p', 'l', 'e', 0 }; unsignedchar w_str[] = { 'E', 0, 'x', 0, 'a', 0, 'm', 0, 'p', 0, 'l', 0, 'e', 0, 0 };
  1. If you want to use an external function (i.e Windows API) you must first ensure the module containing the function is loaded into the current process.
  2. The second part of calling an external function is calling the DEFINE_FUNC_PTR or DEFINE_FWD_FUNC_PTR macro with the name of the module and the typedef of the function you want to call.
  3. Any forwarded functions will need to be defined using the DEFINE_FWD_FUNC_PTR macro.
Hello World Example
CHAR strUser32[] = { 'u','s','e','r','3','2','.','d','l','l',0 };
CHAR strMboxTitle[] = { 'S','h','e','l','l','S','t','d','i','o', 0 };
CHAR strMboxMsg[] = { 'H','e','l','l','o','', 'W','o','r','l','d','!',0 };
DEFINE_FUNC_PTR("kernel32.dll", LoadLibraryA);
LoadLibraryA(strUser32);
DEFINE_FUNC_PTR("user32.dll", MessageBoxA);
MessageBoxA(NULL, strMboxMsg, strMboxTitle, MB_OK);
DEFINE_FWD_FUNC_PTR("ntdll.dll", "RtlExitUserThread", ExitThread);
ExitThread(0);
Misc
  • If you wish to add a function you must keep it between the MalCodeBegin and MalCodeEnd markers.
  • Don't forget to call the ScStdio::MalCode() at some point, otherwise when compiling in release with the suggested switches, the code will optimized away.
ShellcodeStdio @ winternl.com
Credit for cool macros: reddit.com/user/good_nickname
About
An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms.
Resources
Readme
GPL-2.0 license
Activity
Stars
533 stars
Watchers
16 watching
Forks
105 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - jackullrich/ShellcodeStdio: An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms. · GitHub
Skip to content
BranchesTags
Latest commit
History
20 Commits
Folders and files
NameName
Last commit message
Last commit date
ShellcodeStdio
ShellcodeStdio
.gitattributes
.gitattributes
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
ShellcodeStdio
An extensible framework for easily writing debuggable, compiler optimized, position independent, x86/x64 shellcode for windows platforms.
For basic usage see main.cpp
Suggested compiler options
C/C++ -> Optimization -> /O1, /Ob2, /Oi, /Os, /Oy-, /GL
C/C++ -> Code Generation -> /MT, /GS-, /Gy
Linker -> General -> /INCREMENTAL:NO

How do I use this?
When working with this framework, and coding shellcode in general, you'll have to keep a few things in mind:
  1. You must declare all your variables on the stack.
  2. Strings are no exception. This is how to create a char*, wchar_t* on the stack. Don't forget to null-terminate.
unsignedchar str[] = { 'E', 'x', 'a', 'm', 'p', 'l', 'e', 0 }; unsignedchar w_str[] = { 'E', 0, 'x', 0, 'a', 0, 'm', 0, 'p', 0, 'l', 0, 'e', 0, 0 };
  1. If you want to use an external function (i.e Windows API) you must first ensure the module containing the function is loaded into the current process.
  2. The second part of calling an external function is calling the DEFINE_FUNC_PTR or DEFINE_FWD_FUNC_PTR macro with the name of the module and the typedef of the function you want to call.
  3. Any forwarded functions will need to be defined using the DEFINE_FWD_FUNC_PTR macro.
Hello World Example
CHAR strUser32[] = { 'u','s','e','r','3','2','.','d','l','l',0 };
CHAR strMboxTitle[] = { 'S','h','e','l','l','S','t','d','i','o', 0 };
CHAR strMboxMsg[] = { 'H','e','l','l','o','', 'W','o','r','l','d','!',0 };
DEFINE_FUNC_PTR("kernel32.dll", LoadLibraryA);
LoadLibraryA(strUser32);
DEFINE_FUNC_PTR("user32.dll", MessageBoxA);
MessageBoxA(NULL, strMboxMsg, strMboxTitle, MB_OK);
DEFINE_FWD_FUNC_PTR("ntdll.dll", "RtlExitUserThread", ExitThread);
ExitThread(0);
Misc
  • If you wish to add a function you must keep it between the MalCodeBegin and MalCodeEnd markers.
  • Don't forget to call the ScStdio::MalCode() at some point, otherwise when compiling in release with the suggested switches, the code will optimized away.
ShellcodeStdio @ winternl.com
Credit for cool macros: reddit.com/user/good_nickname
About
An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms.
Resources
Readme
GPL-2.0 license
Activity
Stars
533 stars
Watchers
16 watching
Forks
105 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - jackullrich/ShellcodeStdio: An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms. · GitHub
Skip to content
BranchesTags
Latest commit
History
20 Commits
Folders and files
NameName
Last commit message
Last commit date
ShellcodeStdio
ShellcodeStdio
.gitattributes
.gitattributes
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
ShellcodeStdio
An extensible framework for easily writing debuggable, compiler optimized, position independent, x86/x64 shellcode for windows platforms.
For basic usage see main.cpp
Suggested compiler options
C/C++ -> Optimization -> /O1, /Ob2, /Oi, /Os, /Oy-, /GL
C/C++ -> Code Generation -> /MT, /GS-, /Gy
Linker -> General -> /INCREMENTAL:NO

How do I use this?
When working with this framework, and coding shellcode in general, you'll have to keep a few things in mind:
  1. You must declare all your variables on the stack.
  2. Strings are no exception. This is how to create a char*, wchar_t* on the stack. Don't forget to null-terminate.
unsignedchar str[] = { 'E', 'x', 'a', 'm', 'p', 'l', 'e', 0 }; unsignedchar w_str[] = { 'E', 0, 'x', 0, 'a', 0, 'm', 0, 'p', 0, 'l', 0, 'e', 0, 0 };
  1. If you want to use an external function (i.e Windows API) you must first ensure the module containing the function is loaded into the current process.
  2. The second part of calling an external function is calling the DEFINE_FUNC_PTR or DEFINE_FWD_FUNC_PTR macro with the name of the module and the typedef of the function you want to call.
  3. Any forwarded functions will need to be defined using the DEFINE_FWD_FUNC_PTR macro.
Hello World Example
CHAR strUser32[] = { 'u','s','e','r','3','2','.','d','l','l',0 };
CHAR strMboxTitle[] = { 'S','h','e','l','l','S','t','d','i','o', 0 };
CHAR strMboxMsg[] = { 'H','e','l','l','o','', 'W','o','r','l','d','!',0 };
DEFINE_FUNC_PTR("kernel32.dll", LoadLibraryA);
LoadLibraryA(strUser32);
DEFINE_FUNC_PTR("user32.dll", MessageBoxA);
MessageBoxA(NULL, strMboxMsg, strMboxTitle, MB_OK);
DEFINE_FWD_FUNC_PTR("ntdll.dll", "RtlExitUserThread", ExitThread);
ExitThread(0);
Misc
  • If you wish to add a function you must keep it between the MalCodeBegin and MalCodeEnd markers.
  • Don't forget to call the ScStdio::MalCode() at some point, otherwise when compiling in release with the suggested switches, the code will optimized away.
ShellcodeStdio @ winternl.com
Credit for cool macros: reddit.com/user/good_nickname
About
An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms.
Resources
Readme
GPL-2.0 license
Activity
Stars
533 stars
Watchers
16 watching
Forks
105 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
GitHub - jackullrich/ShellcodeStdio: An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms. · GitHub
Skip to content
BranchesTags
Latest commit
History
20 Commits
Folders and files
NameName
Last commit message
Last commit date
ShellcodeStdio
ShellcodeStdio
.gitattributes
.gitattributes
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
ShellcodeStdio
An extensible framework for easily writing debuggable, compiler optimized, position independent, x86/x64 shellcode for windows platforms.
For basic usage see main.cpp
Suggested compiler options
C/C++ -> Optimization -> /O1, /Ob2, /Oi, /Os, /Oy-, /GL
C/C++ -> Code Generation -> /MT, /GS-, /Gy
Linker -> General -> /INCREMENTAL:NO

How do I use this?
When working with this framework, and coding shellcode in general, you'll have to keep a few things in mind:
  1. You must declare all your variables on the stack.
  2. Strings are no exception. This is how to create a char*, wchar_t* on the stack. Don't forget to null-terminate.
unsignedchar str[] = { 'E', 'x', 'a', 'm', 'p', 'l', 'e', 0 }; unsignedchar w_str[] = { 'E', 0, 'x', 0, 'a', 0, 'm', 0, 'p', 0, 'l', 0, 'e', 0, 0 };
  1. If you want to use an external function (i.e Windows API) you must first ensure the module containing the function is loaded into the current process.
  2. The second part of calling an external function is calling the DEFINE_FUNC_PTR or DEFINE_FWD_FUNC_PTR macro with the name of the module and the typedef of the function you want to call.
  3. Any forwarded functions will need to be defined using the DEFINE_FWD_FUNC_PTR macro.
Hello World Example
CHAR strUser32[] = { 'u','s','e','r','3','2','.','d','l','l',0 };
CHAR strMboxTitle[] = { 'S','h','e','l','l','S','t','d','i','o', 0 };
CHAR strMboxMsg[] = { 'H','e','l','l','o','', 'W','o','r','l','d','!',0 };
DEFINE_FUNC_PTR("kernel32.dll", LoadLibraryA);
LoadLibraryA(strUser32);
DEFINE_FUNC_PTR("user32.dll", MessageBoxA);
MessageBoxA(NULL, strMboxMsg, strMboxTitle, MB_OK);
DEFINE_FWD_FUNC_PTR("ntdll.dll", "RtlExitUserThread", ExitThread);
ExitThread(0);
Misc
  • If you wish to add a function you must keep it between the MalCodeBegin and MalCodeEnd markers.
  • Don't forget to call the ScStdio::MalCode() at some point, otherwise when compiling in release with the suggested switches, the code will optimized away.
ShellcodeStdio @ winternl.com
Credit for cool macros: reddit.com/user/good_nickname
About
An extensible framework for easily writing compiler optimized position independent x86 / x64 shellcode for windows platforms.
Resources
Readme
GPL-2.0 license
Activity
Stars
533 stars
Watchers
16 watching
Forks
105 forks
Report repository
Releases
Packages
Used by
Contributors
Languages