ForAllSecure targetted CodeJitsu running CROMU_00095 in round 15.

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Type 1 POV

eip:0xe7a1e0f8 - ebx:0x3c4a349a

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Execution control corruption via return (return to: 0xbaaaaf58).

Tracing data from eip: 0x8054c11 tracing source of memory: 0xbaaaaf58 (value: 0xbaaaaf5c)

0x8054c0d : receive syscall (return)
0x8054c11: ret // address: 0xbaaaaf58 value: 0xbaaaaf5c

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Execution of memory occurred that was not part of the initial text sections or an executably allocated page.

Tracing data from eip: 0xbaaaaf5c tracing source of memory: 0xbaaaaf5c (value: 0x4a349abb)

0x8054c0d : receive syscall (return)
0xbaaaaf5c: mov ebx,0x3c4a349a // address: 0xbaaaaf5c value: 0x4a349abb

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Negotiated general register: ebx:0x3c4a349a

Tracing data from eip: 0xbaaaaf66 tracing source of register: ebx (value: 0x3c4a349a)

0xbaaaaf5c : mov ebx,0x3c4a349a
0xbaaaaf66: jmp eax // address: ebx value: 0x3c4a349a