HACKABLE SECURITY MODULES

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WHAT NOW? Correlate string references in both firmwares, same strings at same functions (easy) Check out branches from the same functions (harder) Fix the rest by hand (much harder) Read the code and profit!
CAN WE PROFIT? These products are methodically tested and the best security practices are used during design Bugs should not exist At least, simple and easy to identify bugs should be eliminated Let's move on to an example of security checks...
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HACKABLE SECURITY MODULES: REVERSIN
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OUTLINE What is an HSM and HSM secu
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USAGE Securely store cryptographic
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BIG PLAYERS Gemalto Bought Safenet,
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BIG PLAYERS Utimaco Primary target
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WHERE ARE THEY USED?
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DNSSEC Root Zone operators store ke
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ONE DOES NOT SIMPLY Implement serio
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GENERAL INFORMATION As HSMs are use
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FIPS 140-2 Defines 4 different secu
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FIPS 140-2 FIPS 140-2 validation ha
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COMMON CRITERIA Interesting fact: I
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VARIOUS MODELS OF THE CRYPTOSERVER
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THE HARDWARE Network HSMs are Linux
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DEVICE KEY A single key created whe
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TOOLS csadm: Command line tool to m
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USERS Every user has: An authentica
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COMMUNICATION PROTOCOL Custom commu
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FORMAT A single blob in a custom .m
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MTC FILES Individual firmware modul
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MTC FILES $ binwalk adm_3.0.18.1_c5
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MTC FILES $ hexdump -C adm_3.0.18.1
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MTC FILES $ strings csadm | grep CO
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MTC FILES Now what???
Page 49 and 50: MTC FILES We can now extract the CO
Page 51 and 52: MTC FILES
Page 53 and 54: MTC FILES (Insert multiple slides w
Page 55 and 56: THE TMS320C64X DSP Steps to write o
Page 57 and 58: BLOCK DIAGRAM
Page 59 and 60: PARALLEL EXECUTION 8 execution unit
Page 61 and 62: REGISTERS A0-A2,B0-B2 are also cond
Page 63 and 64: DELAY SLOTS Most instructions are e
Page 65 and 66: REVERSING TOOLS Still wondering why
Page 67 and 68: ABI - CALLING CONVENTIONS No stack
Page 69 and 70: ABI - REGISTERS 12 callee-saved reg
Page 71 and 72: IMPLEMENTING THE DISASSEMBLER We kn
Page 73 and 74: THE CAPSTONE DISASSEMBLY FRAMEWORK
Page 75 and 76: WHERE DO WE START? Clone the projec
Page 77 and 78: THE TABLEGEN FILE Let's first gener
Page 79 and 80: WHAT'S ACTUALLY NEEDED? In our case
Page 81 and 82: HOW DO WE DEFINE REGISTERS? Simple,
Page 83 and 84: HOW DO WE DEFINE OPERANDS? def memo
Page 85 and 86: HOW DO WE DEFINE INSTRUCTION CLASSE
Page 87 and 88: HOW DO WE DEFINE INSTRUCTION CLASSE
Page 89 and 90: HOW DO WE DEFINE INSTRUCTIONS? defm
Page 91 and 92: LETS FINISH THIS THING!
Page 93 and 94: PROBLEMS FACED Instructions that us
Page 95 and 96: CONGRATULATIONS! We have a disassem
Page 97 and 98: REVERSING THE FIRMWARE Let's check
Page 99: REVERSING THE FIRMWARE We've got sy
Page 103 and 104: EXTRACTION OF MBK DATABASE BACKUP S
Page 105 and 106: WHAT ABOUT OTHER BUGS? All the code
Page 107 and 108: DOWNLOADS Reversing tools: https://
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