베디드 시스템 취약 분석 - grayhash.com

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( ). . . . . ( ) . . . . . / . . . . ( , ). GrayHash( ) . ( ) . (codegate, secuinside) . Defcon CTF . . . . . . . .. .. . . . Step1 : . Step2 : (wallpad). Step3 : wallpad ( ) . Step4 : wallpad . Step5 : UART . Step6 : . Step7 : (Exploitation) . Step1. . : (gateway). : (gateway). : (gateway). : (gateway). OS : Embedded Linux : Wallpad ( ). OS : Linux ( Android ). : Wallpad ( ). . . . . . . . . . . . . . . / (P2P). . . . ( ). Step2. . Wallpad VS Gateway Wallpad UI . . P2P . Gateway , . . . Wallpad VS Gateway . . , . , Gateway . ( ). Wallpad . Step3. Wallpad ( ). . 1. . 2. / . 3. UART . 4. Shell . (partition dump, /dev/mtdblock). 5. Flash Memory . 6. JTAG . 1. . . ~iptime/ . . . Boot-loader Kernel Ram Disk (initrd). Root File System (applications). . . 2. / . . . ? => . ex> 1.

베디드 시스템 취약 분석 (홈네트워크 사례 중심) cybermong@grayhash.com 2015.4.23