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dev-mem

Runtime memory access and manipulation on embedded Linux via /dev/mem, /dev/kmem, and MTD devices. Covers physical memory reads/writes, kernel symbol resolution via /proc/kallsyms, live firmware patching with mtd_debug and flashcp, and bypassing memory-access restrictions (CONFIG_STRICT_DEVMEM, kernel.perf_event_paranoid).

65

Quality

80%

Does it follow best practices?

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SecuritybySnyk

Critical

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tessl review fix ./packages/decepticon/decepticon/skills/standard/iot/dev-mem/SKILL.md
SKILL.md
Quality
Evals
Security
Critical

E005: Suspicious download URL detected in skill instructions.

What this means

Detected a suspicious URL in the skill instructions that could lead the agent to download and execute malicious scripts or binaries. This includes links to executables from untrusted sources, typosquatting of official packages, URL shorteners that obscure the destination, and personal file hosting services.

Why it was flagged

These GitHub repositories provide low-level tools (devmem2 and mtd-utils) that, when downloaded/built from less-established GitHub accounts, can deliver binaries used for direct kernel/flash manipulation and thus are higher-risk sources for malicious or tampered executables.

Report incorrect finding
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

The document provides step-by-step instructions to read/write physical and kernel memory, extract credentials, escalate privileges, inject persistent backdoors into firmware/U‑Boot, and dump memory for exfiltration—strong indicators of deliberate malicious intent and high abuse potential.

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 root-level memory and flash access (e.g., /dev/mem, /dev/kmem, /dev/mtd*), kernel patching, modifying U-Boot/env and injecting a backdoor account into /etc/passwd, all actions that modify and can compromise the machine state.

Repository
PurpleAILAB/Decepticon
Audited
Security analysis
Snyk

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