Menu

Individual skill

hunt-aspnet

0upvotes

Hunt ASP.NET-specific surface — ViewState deserialization (signed-only vs encrypted), machineKey recovery, dual-parser MAC-bypass anti-pattern, request-validator bypass, trace.axd/elmah.axd disclosure, load-balanced ViewState cross-node failures, SafeControl enumeration via reflection, customErrors mode=Off stack-trace leaks, classic Webforms .aspx/.asmx/.svc surface. Built for ASP.NET Webforms + WCF + SharePoint farms.

skills/hunt-aspnet/SKILL.md

Read pinned source

Source commit d67cc00d9297a15b9210121e0a93c33f9fb6be46

What was checked

Matches the observed repository HEAD
Yes
Scanner rules are current
Yes
Repository scan complete
No
Skill scan complete
No
Observed behavior
Network or broad shell
Last checked
Nov 9, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings)
5,505
Repository last updated
Nov 8, 2026
License
MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files
Read excerpt

## Crown Jewel Targets

ASP.NET deserialization bugs pay among the highest amounts in bug bounty when they reach RCE. Even when patched, the disclosure-tier findings (signed-only ViewState, dual-parser differential, request-validator quirks) reliably pay Low-Medium.

**Highest-value targets:**

- **SharePoint farms** (any version — 2013/2016/2019/SE) — sign-only ViewState + permissive ToolPane.aspx + anonymous FormDigest creates the CVE-2025-53770 ToolShell precondition chain
- **Telerik UI for ASP.NET AJAX** — `Telerik.Web.UI.WebResource.axd` is a documented RCE sink when keys leak (CVE-2017-11317, CVE-2017-11357, CVE-2019-18935)
- **Classic ASP.NET Webforms enterprise apps** — banking portals, dealer portals, HR systems left on .NET Framework 4.x
- **WCF services** (`*.svc?WSDL`) — often forgotten admin endpoints with looser auth than the main app
- **Sitecore CMS** — ViewState + Sitecore-specific deserialization chains (CVE-2021-42237)
- **DotNetNuke (DNN)** — historic ViewState RCE chains
- **Umbraco CMS** — ViewState + custom deserialization sinks
Back to top