PLC-BLASTER

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Knowhow Protection II ● ● ● How to disable the Knowhow Protection? – Set enable flag to: 0x00, 0x00 Problem: source-code is still AES encrypted How is the AES-Key generated? Black Hat Asia 2016: <strong>PLC</strong>-Blaster 46
Knowhow Protection III ● ● Key derived from the hash: K = truncate128Bit(SHA1 HASH) XOR M M = 0x28,0x6f,0x76,0x5c,0x6e,0x3b,0x1e,0x4c, 0xd0,0x8e,0x42,0x31,0x43,0x7b,0x8e,0xbf Siemens Security Advisory: SSA-833048 Black Hat Asia 2016: <strong>PLC</strong>-Blaster 47
Page 1 and 2: PLC-BLASTER A Worm Living Solely in
Page 3 and 4: S7-1211 ● ● ● ● ● Built f
Page 5 and 6: Program Organization Blocks ● OB
Page 7 and 8: Worm ● ● ● ● Target discove
Page 9 and 10: Target Discovery II IF "data".con_s
Page 11 and 12: Worm ● ● ● ● Target discove
Page 13 and 14: Protocol Analysis I ● S7CommPlus
Page 15 and 16: Protocol Analysis III Message 1: Co
Page 17 and 18: Attribute-Blocks II Datatype Attrib
Page 19 and 20: Anti-Replay Mechanism Message 2: Co
Page 21 and 22: Transfer a Program Message: Downloa
Page 23 and 24: Fun with Attribute Blocks I ● Dat
Page 25 and 26: Fun with Attribute Blocks I ● ●
Page 27 and 28: Fun with Attribute Blocks II ●
Page 29 and 30: Implement the Worm ● ● ● ●
Page 31 and 32: Activation ● ● ● ● OB (Orga
Page 33 and 34: Payloads ● ● ● DoS Arbitrary
Page 35 and 36: Demonstration Attacker Injection C&
Page 37 and 38: Demonstration Attacker C&C Server C
Page 39 and 40: Impact on the PLC II ● Memory usa
Page 41 and 42: Persistence & Identification ●
Page 43 and 44: Black Hat Asia 2016: PLC-Blaster 43
Page 45: Knowhow Protection ● ● ● Prev
Page 49 and 50: Copy Proection ● ● ● ● ●
Page 51 and 52: Improvements & Recommendations ●
Page 53 and 54: Test Test Siemens● S7-1200 Ja Ja
Page 55 and 56: Test Test Leading Vendors Supportin
Page 57: Q&A http://opensource-security.de i

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