Individual skill
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.
packages/decepticon/decepticon/skills/standard/iot/bootloader-uboot/SKILL.md
Source commit cc6044561ff32188dc0aa899bcc7d3666ffcfd1c
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- Matches the observed repository HEAD
- Yes
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- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 2, 2026
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- Repository stars (not skill ratings)
- 6,560
- Repository last updated
- Nov 7, 2026
- License
- Apache-2.0
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- agent Repository topic
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Read excerpt
# U-Boot Bootloader Attack
> U-Boot is the dominant open-source bootloader for embedded Linux devices.
> A UART console with an unpatched autoboot allows complete OS compromise
> without touching the running filesystem: override `bootargs`, pass
> `init=/bin/sh`, and land a root shell before `init` starts.
## Prerequisites
- UART console connected (see `firmware-acquisition` skill, Tier 1).
- Serial terminal: `screen /dev/ttyUSB0 115200` or `picocom -b 115200 /dev/ttyUSB0`.
- Physical access to power-cycle the device.
- Tools (optional, for scripted attacks): `minicom`, `expect`, `python3-serial`.
