[spam][crazy] bomb malware

Karl gmkarl at gmail.com
Tue Dec 14 02:59:41 PST 2021


fork situation resolved

i've loaded the mirai binary into the ghidra analyser.

Here's how ghidra displays the mirai entrypoint.  Comments from me are
preceded by "//" inline.


**************************************************************
                             *
                   *
                             *  FUNCTION
                   *

**************************************************************
                             undefined __regparm3 entry(undefined4
param_1, undefined...
             undefined         AL:1           <RETURN>
             undefined4        EAX:4          param_1
             undefined4        EDX:4          param_2
             undefined4        Stack[-0x8]:4  local_8
               XREF[1]:     0804816d(*)
                             entry
      XREF[2]:     Entry Point(*), 08048018(*)
        08048164 31 ed           XOR        EBP,EBP
        08048166 5e              POP        ESI
        08048167 89 e1           MOV        ECX,ESP
        08048169 83 e4 f0        AND        ESP,0xfffffff0
        0804816c 50              PUSH       param_1
        0804816d 54              PUSH       ESP=>local_8
        0804816e 52              PUSH       param_2
        0804816f 68 d6 db        PUSH       LAB_0804dbd6
                 04 08
        08048174 68 94 80        PUSH       LAB_08048094
                 04 08
        08048179 51              PUSH       ECX
        0804817a 56              PUSH       ESI
        0804817b 68 40 a5        PUSH       FUN_0804a540
                 04 08
        08048180 e8 ba 50        CALL       FUN_0804d23f
                      int FUN_0804d23f(undefined * par
                 00 00
        08048185 f4              HLT
        08048186 90 90 90        align      align(10)
                 90 90 90
                 90 90 90 90


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