CodeJitsu targetted Disekt running YAN01_00016 in round 91.

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Type 1 POV

eip:0x38e48d83 - eax:0x6f79d0b4

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

Tracing data from eip: 0x8048e4c tracing source of memory: 0xbaaaaff8 (value: 0xbaaaafb0)

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: 0xbaaaafb0

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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: 0xbaaaafb0 tracing source of memory: 0xbaaaafb0 (value: 0x79d0b4b8)

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
0xbaaaafb0: mov eax,0x6f79d0b4 // address: 0xbaaaafb0 value: 0x79d0b4b8

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Negotiated general register: eax:0x6f79d0b4

Tracing data from eip: 0xbaaaafba tracing source of register: eax (value: 0x6f79d0b4)

0xbaaaafb0 : mov eax,0x6f79d0b4
0xbaaaafba: jmp ebx // address: eax value: 0x6f79d0b4