Test design, vulnerability assessment, and quality assurance (13.1K skills)
Analyze running containers in a CTF sandbox by comparing declared configuration with live processes, mounts, and routes. Trace how secrets and helper containers affect behavior, then document the earliest mismatch and a minimal evidence chain.
Analyze WebSocket and SSE realtime connections in CTF sandboxes. Trace connection setup, authentication, subscriptions, and message sequences to explain changes in displayed or stored state and identify the smallest sequence that reproduces them.
Analyze Windows identity and host evidence in CTF sandboxes. Connect authentication tickets, credentials, mailbox rules, and host activity to explain which services accept access and how movement between hosts occurs.
Build an evidence-backed incident timeline in a CTF sandbox by correlating logs, network captures, and other artifacts. Trace attacker actions across sources, distinguish confirmed events from inferred gaps, and preserve the sequence that supports the conclusion.
Compare GraphQL and RPC contracts, which describe expected API behavior, with generated clients and live handlers in a CTF sandbox. Identify hidden or outdated operations and preserve minimal request pairs that demonstrate the mismatch.
Trace queued jobs from submission to their eventual effects in a CTF sandbox. Compare request-time and worker-time settings, follow retries and failed-message handling, and document the smallest sequence that explains a worker-specific result.
Trace server-side request forgery, where a server fetches a supplied URL, through internal services and metadata endpoints in a CTF sandbox. Document credential scope and distinguish successful token extraction from access actually accepted by another service.
Examine container isolation in a CTF sandbox, a controlled security challenge environment. The skill checks kernel and runtime conditions, verifies whether an exploit crosses into host context, and preserves a minimal reproducible chain with evidence.
Trace uploaded files through extraction, conversion, parsing, and reconstruction of saved objects in a CTF sandbox, an isolated competition environment. Preserve original and derived files, distinguish visible validation from backend behavior, and document the smallest reproducible processing chain.
Trace how JWT, JWS, and JWE tokens become accepted identities or privileges in a CTF sandbox. Examine headers, key selection, and claims, the token's attributes, then preserve a minimal reproducible path demonstrating validation confusion.
Investigate web applications in a CTF sandbox by tracing real browser requests, stored state, API calls, and background jobs. Compare successful and failing flows to explain authentication, routing, and differences between interface and server behavior.
Compare how proxies and backend servers interpret HTTP requests in a CTF sandbox. Use paired requests and logs to pinpoint differences in paths, headers, or message boundaries, then document a minimal reproduction of unintended routing.
Investigate Kubernetes permissions and cluster behavior in CTF sandboxes. Trace role-based access control, service accounts, and automated controllers to explain workload changes, secret exposure, and differences between configuration files and live objects.
Investigate Kerberos delegation, which lets services act on another identity, in a CTF sandbox. Trace delegation settings, issued tickets, and service acceptance to document a reproducible trust path and the privileges it actually grants.
Recover hidden malware settings and communication parameters in an isolated CTF environment. Document how values are decoded, preserve supporting evidence, and connect recovered fields to the sample’s observed behavior.
Analyze encrypted ZIP challenges in a CTF sandbox and use bkcrack to recover legacy ZipCrypto keys from known file contents. Create a decrypted archive, validate extraction, and preserve the commands and evidence needed to reproduce the result.
Trace forced authentication and relay chains in a CTF sandbox. Identify what triggers authentication, which service accepts the forwarded identity, and what privilege or artifact results, while distinguishing captured authentication from a successfully accepted relay.
Trace how requests travel through a CTF sandbox, from hostnames and proxy rules to containers and processes. Compare headers and live traffic to identify which service handles a request and what changes its destination.
Solve sandboxed CTF security challenges by reconstructing encoding and encryption steps, extracting data hidden in media, and tracing mobile app signing or storage behavior. Preserve exact parameters and evidence to reproduce decoded content or signed requests.
Analyze binaries, malware samples, memory dumps, and packet captures in sandboxed security challenges. Trace program behavior, investigate crashes, and verify exploit conditions while preserving original files, decoded artifacts, and observable evidence for reproducible findings.
Organize CTF investigations by mapping the supplied targets, tracing one minimal path, and selecting the relevant specialist workflow. Findings are grounded in observed behavior and reproducible evidence, with a clean baseline used for verification.
Trace OAuth and OIDC sign-in flows in a CTF sandbox, from redirects through token exchange to application acceptance. Show where tokens become a recognized identity or permission, and preserve the smallest reproducible flow.
Reconstruct frontend behavior from served JavaScript, build manifests, and source maps, which link built code to source. Trace loaded modules, recover route and API references, and identify the smallest asset sequence that explains observed behavior.
Trace mailbox abuse in a CTF sandbox, a controlled security challenge environment. The skill connects OAuth permissions, forwarding rules, delegated access, and message logs to concrete mail effects, documenting the smallest reproducible sequence and supporting evidence.