CodeJitsu targetted DeepRed running CROMU_00065 in round 81.


Type 1 POV

eip:0x5ea8ea3b - eax:0x441fe629


Execution control corruption via call.

Tracing data from eip: 0x8049796 tracing source of register: eax (value: 0xbaaaae6a)

0x804d401 : receive syscall (return)
0x804a342 : mov al,byte ptr [ebp-0x21]
0x804a34b : mov byte ptr [edx+ecx],al
0x8049772 : mov eax,dword ptr [ecx+0xc]
0x8049796: call eax // address: eax value: 0xbaaaae6a

Execution of memory occurred that was not part of the initial text sections or an executably allocated page.

Tracing data from eip: 0xbaaaae6a tracing source of memory: 0xbaaaae6a (value: 0x1fe629b8)

0x804d401 : receive syscall (return)
0x804a342 : mov al,byte ptr [ebp-0x21]
0x804a34b : mov byte ptr [edx+ecx],al
0xbaaaae6a: mov eax,0x441fe629 // address: 0xbaaaae6a value: 0x1fe629b8

Negotiated general register: eax:0x441fe629

Tracing data from eip: 0xbaaaae74 tracing source of register: eax (value: 0x441fe629)

0xbaaaae6a : mov eax,0x441fe629
0xbaaaae74: jmp ebx // address: eax value: 0x441fe629

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