rule win_minibike_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.minibike."
        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.minibike"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 894da8 8945a4 85c0 7430 8b75dc 8b55e4 2bf7 }
            // n = 7, score = 100
            //   894da8               | mov                 dword ptr [ebp - 0x58], ecx
            //   8945a4               | mov                 dword ptr [ebp - 0x5c], eax
            //   85c0                 | test                eax, eax
            //   7430                 | je                  0x32
            //   8b75dc               | mov                 esi, dword ptr [ebp - 0x24]
            //   8b55e4               | mov                 edx, dword ptr [ebp - 0x1c]
            //   2bf7                 | sub                 esi, edi

        $sequence_1 = { 8bc8 83e03f c1f906 6bd038 8b0c8d08280410 804c112802 5b }
            // n = 7, score = 100
            //   8bc8                 | mov                 ecx, eax
            //   83e03f               | and                 eax, 0x3f
            //   c1f906               | sar                 ecx, 6
            //   6bd038               | imul                edx, eax, 0x38
            //   8b0c8d08280410       | mov                 ecx, dword ptr [ecx*4 + 0x10042808]
            //   804c112802           | or                  byte ptr [ecx + edx + 0x28], 2
            //   5b                   | pop                 ebx

        $sequence_2 = { 8bcb e8???????? 8b95f0f3ffff 8bf0 83fa10 722b }
            // n = 6, score = 100
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     
            //   8b95f0f3ffff         | mov                 edx, dword ptr [ebp - 0xc10]
            //   8bf0                 | mov                 esi, eax
            //   83fa10               | cmp                 edx, 0x10
            //   722b                 | jb                  0x2d

        $sequence_3 = { 660fd645d8 0f2805???????? 50 51 8d4dd8 c7458405000000 0f118574ffffff }
            // n = 7, score = 100
            //   660fd645d8           | movq                qword ptr [ebp - 0x28], xmm0
            //   0f2805????????       |                     
            //   50                   | push                eax
            //   51                   | push                ecx
            //   8d4dd8               | lea                 ecx, [ebp - 0x28]
            //   c7458405000000       | mov                 dword ptr [ebp - 0x7c], 5
            //   0f118574ffffff       | movups              xmmword ptr [ebp - 0x8c], xmm0

        $sequence_4 = { 890a 3bc6 72f6 43 83c204 3b9d10feffff 72db }
            // n = 7, score = 100
            //   890a                 | mov                 dword ptr [edx], ecx
            //   3bc6                 | cmp                 eax, esi
            //   72f6                 | jb                  0xfffffff8
            //   43                   | inc                 ebx
            //   83c204               | add                 edx, 4
            //   3b9d10feffff         | cmp                 ebx, dword ptr [ebp - 0x1f0]
            //   72db                 | jb                  0xffffffdd

        $sequence_5 = { 51 56 e8???????? 83c408 0f2805???????? 33c9 0f118544feffff }
            // n = 7, score = 100
            //   51                   | push                ecx
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   0f2805????????       |                     
            //   33c9                 | xor                 ecx, ecx
            //   0f118544feffff       | movups              xmmword ptr [ebp - 0x1bc], xmm0

        $sequence_6 = { 751a 83f8ff 740f 83f8fe 740a 6bfa38 033c8d08280410 }
            // n = 7, score = 100
            //   751a                 | jne                 0x1c
            //   83f8ff               | cmp                 eax, -1
            //   740f                 | je                  0x11
            //   83f8fe               | cmp                 eax, -2
            //   740a                 | je                  0xc
            //   6bfa38               | imul                edi, edx, 0x38
            //   033c8d08280410       | add                 edi, dword ptr [ecx*4 + 0x10042808]

        $sequence_7 = { c645fc13 51 0f57c0 c78514feffff00000000 8d8598fcffff 660fd6850cfeffff 0f2805???????? }
            // n = 7, score = 100
            //   c645fc13             | mov                 byte ptr [ebp - 4], 0x13
            //   51                   | push                ecx
            //   0f57c0               | xorps               xmm0, xmm0
            //   c78514feffff00000000     | mov    dword ptr [ebp - 0x1ec], 0
            //   8d8598fcffff         | lea                 eax, [ebp - 0x368]
            //   660fd6850cfeffff     | movq                qword ptr [ebp - 0x1f4], xmm0
            //   0f2805????????       |                     

        $sequence_8 = { ff75ec c645b400 ff75b4 51 8d4dbc e8???????? 3b7508 }
            // n = 7, score = 100
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   c645b400             | mov                 byte ptr [ebp - 0x4c], 0
            //   ff75b4               | push                dword ptr [ebp - 0x4c]
            //   51                   | push                ecx
            //   8d4dbc               | lea                 ecx, [ebp - 0x44]
            //   e8????????           |                     
            //   3b7508               | cmp                 esi, dword ptr [ebp + 8]

        $sequence_9 = { bf10270000 e8???????? 99 f7ff 85f6 750f }
            // n = 6, score = 100
            //   bf10270000           | mov                 edi, 0x2710
            //   e8????????           |                     
            //   99                   | cdq                 
            //   f7ff                 | idiv                edi
            //   85f6                 | test                esi, esi
            //   750f                 | jne                 0x11

    condition:
        7 of them and filesize < 574464
}