RsaCtfTool vs Pwntools: 2026 Comparison
RsaCtfTool is a free penetration testing tool. Pwntools is a free penetration testing tool. Compare features, ratings, integrations, and community reviews side by side to find the best penetration testing fit for your security stack.
CST VerdictBased on our analysis of available product data, here is our conclusion:
Penetration testers and security researchers validating RSA implementations should reach for RsaCtfTool when you need to quickly expose weak key generation in legacy systems; its multi-algorithm factorization approach catches common mistakes that single-method tools miss. With 6,830 GitHub stars and active community contributions, it's the go-to for CTF competitions and authorized assessments of systems you control. Skip this if you're looking for a general cryptanalysis platform covering symmetric ciphers or modern elliptic curve vulnerabilities; RsaCtfTool is RSA-specific and won't help there.
Penetration testers and red teamers who need to write exploits fast will get the most from Pwntools; its Python library handles the tedious low-level socket work, ROP gadget chaining, and shellcode generation so you spend time on vulnerability logic instead of boilerplate. The 13k GitHub stars reflect real adoption in both professional engagements and CTF competitions, where iteration speed matters. Skip this if your team codes exploits in C or expects a GUI; Pwntools is pure command-line and Python, with a learning curve if you're not comfortable scripting.
