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bootloader-uboot

U-Boot bootloader attack playbook — console interrupt to break the autoboot countdown, environment variable inspection and manipulation, bootargs override to spawn init=/bin/sh, secure-boot bypass techniques, and fault-injection basics (voltage and clock glitching). Covers MIPS, ARM, and AArch64 targets.

62

Quality

73%

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SecuritybySnyk

Critical

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tessl review fix ./packages/decepticon/decepticon/skills/standard/iot/bootloader-uboot/SKILL.md
SKILL.md
Quality
Evals
Security

Security

2 findings: 1 critical severity, 1 medium severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.

Critical

E006: Malicious code pattern detected in skill scripts.

What this means

Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.

Why it was flagged

This document contains explicit, step‑by‑step instructions to gain root shells, create persistent root backdoors, replace bootloaders, load remote payloads, and bypass secure-boot via fault injection—clearly enabling deliberate malicious compromise and persistence of embedded devices.

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Medium

W013: Attempt to modify system services in skill instructions.

What this means

The skill prompts the agent to compromise the security or integrity of the user’s machine by modifying system-level services or configurations, such as obtaining elevated privileges, altering startup scripts, or changing system-wide settings.

Why it was flagged

The skill explicitly instructs obtaining a root shell (init=/bin/sh), remounting and editing /etc/passwd (adding a backdoor user), persisting changes with saveenv and flashing a replacement bootloader — all actions that modify the target machine's system state and create persistent accounts/backdoors.

Repository
PurpleAILAB/Decepticon
Audited
Security analysis
Snyk

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