Disekt targetted Shellphish running CROMU_00065 in round 94.


Type 1 POV

eip:0x3afa3114 - ebp:0x80f6724


Execution control corruption via call.

Tracing data from eip: 0x80496a3 tracing source of register: edx (value: 0xbaaaae69)

0x804d401 : receive syscall (return)
0x804a342 : mov al,byte ptr [ebp-0x21]
0x804a34b : mov byte ptr [edx+ecx],al
0x8049690 : mov edx,dword ptr [ecx+eax+0xc]
0x80496a3: call edx // address: edx value: 0xbaaaae69

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

Tracing data from eip: 0xbaaaae69 tracing source of memory: 0xbaaaae69 (value: 0xf6724bd)

0x804d401 : receive syscall (return)
0x804a342 : mov al,byte ptr [ebp-0x21]
0x804a34b : mov byte ptr [edx+ecx],al
0xbaaaae69: mov ebp,0x80f6724 // address: 0xbaaaae69 value: 0xf6724bd

Negotiated general register: ebp:0x80f6724

Tracing data from eip: 0xbaaaae73 tracing source of register: ebp (value: 0x80f6724)

0xbaaaae69 : mov ebp,0x80f6724
0xbaaaae73: jmp ebx // address: ebp value: 0x80f6724

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