checkra1n vs SUDO_KILLER: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
checkra1n is a free penetration testing tool. SUDO_KILLER 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 iOS security researchers targeting iPhone 5s through iPhone X need checkra1n for its semi-tethered access to A9-A11 chipsets via the unfixable checkm8 bootrom exploit, which remains unpatched across all iOS versions. The exploit persists because Apple cannot patch bootrom vulnerabilities in hardware already in the field, making checkra1n the only reliable jailbreak for these legacy devices in controlled testing environments. Skip this tool if your scope includes iPhone XS and newer; checkra1n's bootrom approach doesn't reach A12 and later chips, and you'll waste time on incompatible devices.
Penetration testers and red teamers auditing Linux infrastructure should run SUDO_KILLER during privilege escalation testing; it methodically hunts misconfigurations in sudo rules that most manual reviews miss. The tool has 2,447 GitHub stars and costs nothing, making it a zero-friction addition to any Linux assessment toolkit. Skip this if you're looking for post-exploitation persistence or lateral movement coverage; SUDO_KILLER is narrowly focused on the escalation vector itself, which is exactly why it's effective at that one job.
