[spam][crazy] bomb malware

Karl gmkarl at gmail.com
Tue Dec 14 04:38:07 PST 2021


here it is after 'si'.

something to remember when doing this is that it is a very old
practice for binaries like this to detect whether or not they are
being run in a conventional debugger.  so this approach can only get
you so far (and is very risky).

┌─Register group: general────────────────────────────────────────────┐
│eax            0x0                 0
││ecx            0xffffc944          -14012
│
│edx            0x0                 0                                │
│ebx            0x0                 0
││esp            0xffffc91c          0xffffc91c
││ebp            0x0                 0x0
││esi            0x1                 1
│
│edi            0x0                 0                                │
│eip            0x804d23f           0x804d23f                        │
│eflags         0x282               [ SF IF ]
││cs             0x23                35
││ss             0x2b                43
│
│ds             0x2b                43                               │
┌────────────────────────────────────────────────────────────────────┐
│  > 0x804d23f       push   %ebp
││    0x804d240       push   %edi
│
│    0x804d241       push   %esi                                     │
│    0x804d242       push   %ebx
││    0x804d243       sub    $0x8c,%esp
││    0x804d249       mov    0xb8(%esp),%eax
││    0x804d250       mov    0xa8(%esp),%edi
│
│    0x804d257       mov    %eax,0x804e0b8                           │
│    0x804d25c       mov    0xb4(%esp),%eax                          │
│    0x804d263       mov    %eax,0x804e0c8
││    0x804d268       mov    0xa4(%esp),%eax
│
│    0x804d26f       mov    0xac(%esp),%ebp                          │
│    0x804d276       lea    (%edi,%eax,4),%edx                       │
└────────────────────────────────────────────────────────────────────┘native
process 28422 In:                          L??   PC: 0x804d23f
0x0804816d in ?? ()
(gdb) ni
0x0804816e in ?? ()
(gdb) ni
0x0804816f in ?? ()
(gdb) ni
0x08048174 in ?? ()
(gdb) ni
0x08048179 in ?? ()
(gdb) ni
0x0804817a in ?? ()
(gdb) ni
0x0804817b in ?? ()
(gdb) ni
0x08048180 in ?? ()
(gdb) si
0x0804d23f in ?? ()
(gdb)
[0] < 19:bash  20:vim  21:gdb* Battery 100% | Tue 2021-12-14 07:36 -05


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