Disekt targetted CSDS running CROMU_00094 in round 24.

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Type 2 POV

Reading from protected address: 0x4347c001

0xbaaaac4b : mov edi,dword ptr [0x4347c001]

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The application exited with a segmentation fault

0: 0 // esp: 0

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Execution control corruption via return (return to: 0xbaaaaad8).

Tracing data from eip: 0x8048dcf tracing source of memory: 0xbaaaaad8 (value: 0xbaaaac40)

0x804d18d : receive syscall (return)
0x804bff9 : mov dl,byte ptr [eax]
0x804bffb : mov byte ptr [ebp-0x12],dl
0x804c0f2 : mov al,byte ptr [ebp-0x12]
0x804c103 : mov byte ptr [ecx],al
0x804c587 : mov dl,byte ptr [eax]
0x804c597 : mov byte ptr [eax],dl
0x804c587 : mov dl,byte ptr [eax]
0x804c597 : mov byte ptr [eax],dl
0x8048dcf: ret // address: 0xbaaaaad8 value: 0xbaaaac40

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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: 0xbaaaac40 tracing source of memory: 0xbaaaac40 (value: 0x3199c031)

0x804d18d : receive syscall (return)
0x804bff9 : mov dl,byte ptr [eax]
0x804bffb : mov byte ptr [ebp-0x12],dl
0x804c0f2 : mov al,byte ptr [ebp-0x12]
0x804c103 : mov byte ptr [ecx],al
0xbaaaac40: xor eax,eax // address: 0xbaaaac40 value: 0x3199c031