CodeJitsu targetted DeepRed running CROMU_00073 in round 29.

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Type 1 POV

eip:0x822cc6e6 - ebx:0x8442aa28

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The application exited with a segmentation fault

Tracing data from eip: 0x805032c tracing source of memory: 0xbaaaaa04 (value: 0x822cc6e6)

0x805027d : receive syscall (return)
0x80483a3 : mov dl,byte ptr [ecx+eax]
0x80483ad : mov byte ptr [ecx+eax],dl
0x8050313 : mov ecx,dword ptr [edx]
0x8050329 : mov dword ptr [esp],ecx
0x805032c: ret // address: 0xbaaaaa04 value: 0x822cc6e6

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Execution control corruption via return (return to: 0xbaaaaef8).

Tracing data from eip: 0x80482c6 tracing source of memory: 0xbaaaaef8 (value: 0x8050313)

0x805027d : receive syscall (return)
0x80483b7 : mov dl,byte ptr [ecx+eax]
0x80483c7 : mov byte ptr [ecx+eax],dl
0x80482c6: ret // address: 0xbaaaaef8 value: 0x8050313

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Negotiated general register: ebx:0x8442aa28

Tracing data from eip: 0x805032c tracing source of register: ebx (value: 0x8442aa28)

0x805027d : receive syscall (return)
0x80483a3 : mov dl,byte ptr [ecx+eax]
0x80483ad : mov byte ptr [ecx+eax],dl
0x8050315 : mov ebx,dword ptr [edx+0x4]
0x805032c: ret // address: ebx value: 0x8442aa28