rule win_ddkong_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.ddkong."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ddkong"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 894508 7447 56 50 }
            // n = 4, score = 100
            //   894508               | mov                 dword ptr [ebp + 8], eax
            //   7447                 | je                  0x49
            //   56                   | push                esi
            //   50                   | push                eax

        $sequence_1 = { 03c7 03eb 8928 8b4104 42 83e808 }
            // n = 6, score = 100
            //   03c7                 | add                 eax, edi
            //   03eb                 | add                 ebp, ebx
            //   8928                 | mov                 dword ptr [eax], ebp
            //   8b4104               | mov                 eax, dword ptr [ecx + 4]
            //   42                   | inc                 edx
            //   83e808               | sub                 eax, 8

        $sequence_2 = { 6a04 e8???????? 8065ec00 8065c400 }
            // n = 4, score = 100
            //   6a04                 | push                4
            //   e8????????           |                     
            //   8065ec00             | and                 byte ptr [ebp - 0x14], 0
            //   8065c400             | and                 byte ptr [ebp - 0x3c], 0

        $sequence_3 = { 885c2426 c644242746 c644242872 88442429 8844242a c644242b00 ffd6 }
            // n = 7, score = 100
            //   885c2426             | mov                 byte ptr [esp + 0x26], bl
            //   c644242746           | mov                 byte ptr [esp + 0x27], 0x46
            //   c644242872           | mov                 byte ptr [esp + 0x28], 0x72
            //   88442429             | mov                 byte ptr [esp + 0x29], al
            //   8844242a             | mov                 byte ptr [esp + 0x2a], al
            //   c644242b00           | mov                 byte ptr [esp + 0x2b], 0
            //   ffd6                 | call                esi

        $sequence_4 = { c645f172 c645f276 c645f369 c645f463 c645f565 c645f653 c645f774 }
            // n = 7, score = 100
            //   c645f172             | mov                 byte ptr [ebp - 0xf], 0x72
            //   c645f276             | mov                 byte ptr [ebp - 0xe], 0x76
            //   c645f369             | mov                 byte ptr [ebp - 0xd], 0x69
            //   c645f463             | mov                 byte ptr [ebp - 0xc], 0x63
            //   c645f565             | mov                 byte ptr [ebp - 0xb], 0x65
            //   c645f653             | mov                 byte ptr [ebp - 0xa], 0x53
            //   c645f774             | mov                 byte ptr [ebp - 9], 0x74

        $sequence_5 = { ffd6 8985ecfeffff 8d4594 50 8d45f0 }
            // n = 5, score = 100
            //   ffd6                 | call                esi
            //   8985ecfeffff         | mov                 dword ptr [ebp - 0x114], eax
            //   8d4594               | lea                 eax, [ebp - 0x6c]
            //   50                   | push                eax
            //   8d45f0               | lea                 eax, [ebp - 0x10]

        $sequence_6 = { c645d261 c645d364 8d45c8 50 }
            // n = 4, score = 100
            //   c645d261             | mov                 byte ptr [ebp - 0x2e], 0x61
            //   c645d364             | mov                 byte ptr [ebp - 0x2d], 0x64
            //   8d45c8               | lea                 eax, [ebp - 0x38]
            //   50                   | push                eax

        $sequence_7 = { 898574ffffff 8d45e4 50 68???????? c645e443 c645e572 c645e665 }
            // n = 7, score = 100
            //   898574ffffff         | mov                 dword ptr [ebp - 0x8c], eax
            //   8d45e4               | lea                 eax, [ebp - 0x1c]
            //   50                   | push                eax
            //   68????????           |                     
            //   c645e443             | mov                 byte ptr [ebp - 0x1c], 0x43
            //   c645e572             | mov                 byte ptr [ebp - 0x1b], 0x72
            //   c645e665             | mov                 byte ptr [ebp - 0x1a], 0x65

        $sequence_8 = { c645f854 c645f968 c645fa72 c645fb65 c645fc61 c645fd64 ff15???????? }
            // n = 7, score = 100
            //   c645f854             | mov                 byte ptr [ebp - 8], 0x54
            //   c645f968             | mov                 byte ptr [ebp - 7], 0x68
            //   c645fa72             | mov                 byte ptr [ebp - 6], 0x72
            //   c645fb65             | mov                 byte ptr [ebp - 5], 0x65
            //   c645fc61             | mov                 byte ptr [ebp - 4], 0x61
            //   c645fd64             | mov                 byte ptr [ebp - 3], 0x64
            //   ff15????????         |                     

        $sequence_9 = { c645d54e c645d661 c645d76d c645d865 c645d941 ffd7 }
            // n = 6, score = 100
            //   c645d54e             | mov                 byte ptr [ebp - 0x2b], 0x4e
            //   c645d661             | mov                 byte ptr [ebp - 0x2a], 0x61
            //   c645d76d             | mov                 byte ptr [ebp - 0x29], 0x6d
            //   c645d865             | mov                 byte ptr [ebp - 0x28], 0x65
            //   c645d941             | mov                 byte ptr [ebp - 0x27], 0x41
            //   ffd7                 | call                edi

    condition:
        7 of them and filesize < 81920
}