CodeJitsu targetted ForAllSecure running YAN01_00016 in round 88.

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Type 1 POV

eip:0x2ca60e24 - ebx:0x662202a

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Execution control corruption via return (return to: 0xbaaaaff8).

Tracing data from eip: 0x8048e4c tracing source of memory: 0xbaaaaff8 (value: 0xbaaaafb1)

0x804956a : receive syscall (return)
0x804926b : mov bl,byte ptr [esi+ecx]
0x804926e : mov byte ptr [ebp-0x29],bl
0x8049271 : mov bl,byte ptr [ebp-0x29]
0x804927a : mov byte ptr [edx+ecx],bl
0x8048e4c: ret // address: 0xbaaaaff8 value: 0xbaaaafb1

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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: 0xbaaaafb1 tracing source of memory: 0xbaaaafb1 (value: 0x62202abb)

0x804956a : receive syscall (return)
0x804926b : mov bl,byte ptr [esi+ecx]
0x804926e : mov byte ptr [ebp-0x29],bl
0x8049271 : mov bl,byte ptr [ebp-0x29]
0x804927a : mov byte ptr [edx+ecx],bl
0xbaaaafb1: mov ebx,0x662202a // address: 0xbaaaafb1 value: 0x62202abb

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Negotiated general register: ebx:0x662202a

Tracing data from eip: 0xbaaaafbb tracing source of register: ebx (value: 0x662202a)

0xbaaaafb1 : mov ebx,0x662202a
0xbaaaafbb: jmp eax // address: ebx value: 0x662202a