ReVa

Solve CTF reverse engineering challenges using systematic analysis to find flags, keys, or passwords. Use for crackmes, binary bombs, key validators, obfuscated code, algorithm recovery, or any challenge requiring program comprehension to extract hidden information.

Solve CTF cryptography challenges by identifying, analyzing, and exploiting weak crypto implementations in binaries to extract keys or decrypt data. Use for custom ciphers, weak crypto, key extraction, or algorithm identification.

Performs focused, depth-first investigation of specific reverse engineering questions through iterative analysis and database improvement. Answers questions like "What does this function do?", "Does this use crypto?", "What's the C2 address?", "Fix types in this function". Makes incremental improvements (renaming, retyping, commenting) to aid understanding. Returns evidence-based answers with new investigation threads. Use after binary-triage for investigating specific suspicious areas or when user asks focused questions about binary behavior.

Write and run Python (PyGhidra) code inside the Ghidra session that ReVa's MCP server is already attached to, using the five ReVa scripting tools — `run-script`, `list-scripts`, `read-script`, `write-script`, `edit-script`. Use this whenever the user asks to execute Python against the current program, reach for the Ghidra Flat API directly, write a custom analysis pass, automate something the other ReVa tools don't expose, or persist a `.py` script in Ghidra's scripts directory. Also use when an existing ReVa MCP tool can't do what's needed and the right answer is "drop into PyGhidra for one call." Do NOT use this skill for plain ReVa tool calls that already have a dedicated MCP tool (use that tool instead); do NOT use it to build standalone Python programs that run pyghidra in their own process (the run-script tool runs *inside* the ReVa-hosted Ghidra).