ghost-bits-cast-attack
byyaklang· 59 skills
Java "Ghost Bits" / Cast Attack playbook (Black Hat Asia 2026). Use when attacking Java services where 16-bit char is silently narrowed to 8-bit byte to bypass WAF/IDS for SQL injection, deserialization RCE, file upload (Webshell), path traversal, CRLF injection, request smuggling, and SMTP injection. Affects Tomcat, Spring, Jetty, Undertow, Vert.x, Jackson, Fastjson, Apache Commons BCEL, Apache HttpClient, Angus Mail, JDK HttpServer, Lettuce, Jodd, XMLWriter and re-enables many "patched" CVEs through WAF bypass.
How to install ghost-bits-cast-attack?
yaklang/hack-skills/ghost-bits-cast-attack
$npx -y skills add yaklang/hack-skills --skill ghost-bits-cast-attackInstalls into the current project.
›Prefer a prompt? Paste this to your agent
Run `npx skills use "https://github.com/yaklang/hack-skills" --skill "yaklang/hack-skills/ghost-bits-cast-attack"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/yaklang/hack-skills" that are relevant to the current task. Run `npx skills add "https://github.com/yaklang/hack-skills"` and select the relevant skills, then follow their instructions.
Related
6 picksType
- entra-app-registrationGuides Microsoft Entra ID app registration, OAuth 2.0 authentication, and MSAL integration.Jul 2026
- azure-complianceRun Azure compliance and security audits with azqr plus Key Vault expiration checks.Jul 2026
- entra-agent-idProvision Microsoft Entra Agent Identity Blueprints, BlueprintPrincipals, and per-instance Agent Identities via Microsoft Graph, and configure OAuth 2.0 token…Jul 2026
- firebase-security-rules-auditorAudits Firebase (Firestore, Cloud Storage) security rules for vulnerabilities, privilege escalation, role bypasses, create vs update inconsistencies, resource…Jul 2026
- golang-securitySecurity best practices and vulnerability prevention for Golang.Jul 2026
- gws-modelarmorGoogle Model Armor: Filter user-generated content for safety.Jul 2026
