TECHx targetted CSDS running CROMU_00094 in round 18.


Type 1 POV

eip:0xe672a - ebp:0x8071980


The application exited with a segmentation fault

0x8048dcf: 0x8048dcf // esp: 0xbaaaaad8

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

Tracing data from eip: 0x8048dcf tracing source of memory: 0xbaaaaad8 (value: 0xe672a)

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: 0xe672a

Negotiated general register: ebp:0x8071980

Tracing data from eip: 0x8048dcf tracing source of register: ebp (value: 0x8071980)

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
0x8048dce : pop ebp
0x8048dcf: ret // address: ebp value: 0x8071980

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