rule win_tinynuke_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.tinynuke."
        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.tinynuke"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { c3 55 8bec 817d0c00040000 }
            // n = 4, score = 1600
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   817d0c00040000       | cmp                 dword ptr [ebp + 0xc], 0x400

        $sequence_1 = { 8d8530f6ffff 50 6802020000 ff15???????? 85c0 }
            // n = 5, score = 1400
            //   8d8530f6ffff         | lea                 eax, [ebp - 0x9d0]
            //   50                   | push                eax
            //   6802020000           | push                0x202
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax

        $sequence_2 = { 57 8b7d10 57 ff15???????? 8bc8 33d2 }
            // n = 6, score = 1400
            //   57                   | push                edi
            //   8b7d10               | mov                 edi, dword ptr [ebp + 0x10]
            //   57                   | push                edi
            //   ff15????????         |                     
            //   8bc8                 | mov                 ecx, eax
            //   33d2                 | xor                 edx, edx

        $sequence_3 = { ff15???????? 6a07 59 ff35???????? 33c0 }
            // n = 5, score = 1400
            //   ff15????????         |                     
            //   6a07                 | push                7
            //   59                   | pop                 ecx
            //   ff35????????         |                     
            //   33c0                 | xor                 eax, eax

        $sequence_4 = { 7508 ff35???????? eb06 ff35???????? 50 ff15???????? }
            // n = 6, score = 1400
            //   7508                 | jne                 0xa
            //   ff35????????         |                     
            //   eb06                 | jmp                 8
            //   ff35????????         |                     
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_5 = { 53 8bf0 8d45fc 50 ff750c 57 }
            // n = 6, score = 1400
            //   53                   | push                ebx
            //   8bf0                 | mov                 esi, eax
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   57                   | push                edi

        $sequence_6 = { 8945f4 8d85d4feffff 50 ff15???????? }
            // n = 4, score = 1400
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   8d85d4feffff         | lea                 eax, [ebp - 0x12c]
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_7 = { ff15???????? ff35???????? a3???????? ff75f8 ff15???????? ff35???????? a3???????? }
            // n = 7, score = 1400
            //   ff15????????         |                     
            //   ff35????????         |                     
            //   a3????????           |                     
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff15????????         |                     
            //   ff35????????         |                     
            //   a3????????           |                     

        $sequence_8 = { 50 ff15???????? ff35???????? 8d85a4feffff }
            // n = 4, score = 1300
            //   50                   | push                eax
            //   ff15????????         |                     
            //   ff35????????         |                     
            //   8d85a4feffff         | lea                 eax, [ebp - 0x15c]

        $sequence_9 = { ff75ec ff75fc e8???????? 83c40c 5f }
            // n = 5, score = 1300
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   5f                   | pop                 edi

        $sequence_10 = { ff35???????? 8d85a4feffff 50 ff15???????? }
            // n = 4, score = 1300
            //   ff35????????         |                     
            //   8d85a4feffff         | lea                 eax, [ebp - 0x15c]
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_11 = { ff15???????? a3???????? ff35???????? ff75f8 ff15???????? }
            // n = 5, score = 800
            //   ff15????????         |                     
            //   a3????????           |                     
            //   ff35????????         |                     
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff15????????         |                     

        $sequence_12 = { a3???????? 68e2010000 68???????? 68???????? e8???????? }
            // n = 5, score = 800
            //   a3????????           |                     
            //   68e2010000           | push                0x1e2
            //   68????????           |                     
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_13 = { 8a00 3c0a 7409 3c0d 740f }
            // n = 5, score = 800
            //   8a00                 | mov                 al, byte ptr [eax]
            //   3c0a                 | cmp                 al, 0xa
            //   7409                 | je                  0xb
            //   3c0d                 | cmp                 al, 0xd
            //   740f                 | je                  0x11

        $sequence_14 = { ff35???????? ff7508 ff15???????? 68???????? }
            // n = 4, score = 800
            //   ff35????????         |                     
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ff15????????         |                     
            //   68????????           |                     

        $sequence_15 = { 6a2a 50 8945fc ff15???????? }
            // n = 4, score = 800
            //   6a2a                 | push                0x2a
            //   50                   | push                eax
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   ff15????????         |                     

        $sequence_16 = { a3???????? ff35???????? ff75ec ff15???????? }
            // n = 4, score = 800
            //   a3????????           |                     
            //   ff35????????         |                     
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   ff15????????         |                     

        $sequence_17 = { e8???????? eb18 83f803 7519 ff7608 }
            // n = 5, score = 800
            //   e8????????           |                     
            //   eb18                 | jmp                 0x1a
            //   83f803               | cmp                 eax, 3
            //   7519                 | jne                 0x1b
            //   ff7608               | push                dword ptr [esi + 8]

        $sequence_18 = { ff7508 ff15???????? ff35???????? ff7508 }
            // n = 4, score = 800
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ff15????????         |                     
            //   ff35????????         |                     
            //   ff7508               | push                dword ptr [ebp + 8]

        $sequence_19 = { ff15???????? 8b35???????? 8d430c 50 }
            // n = 4, score = 200
            //   ff15????????         |                     
            //   8b35????????         |                     
            //   8d430c               | lea                 eax, [ebx + 0xc]
            //   50                   | push                eax

        $sequence_20 = { 75a4 8b7c241c 8b4728 891c24 }
            // n = 4, score = 100
            //   75a4                 | jne                 0xffffffa6
            //   8b7c241c             | mov                 edi, dword ptr [esp + 0x1c]
            //   8b4728               | mov                 eax, dword ptr [edi + 0x28]
            //   891c24               | mov                 dword ptr [esp], ebx

        $sequence_21 = { 89442404 e8???????? 83ec08 e8???????? 3b44242c 740c 83c438 }
            // n = 7, score = 100
            //   89442404             | mov                 dword ptr [esp + 4], eax
            //   e8????????           |                     
            //   83ec08               | sub                 esp, 8
            //   e8????????           |                     
            //   3b44242c             | cmp                 eax, dword ptr [esp + 0x2c]
            //   740c                 | je                  0xe
            //   83c438               | add                 esp, 0x38

        $sequence_22 = { 89442404 e8???????? 8945fc 8b0f }
            // n = 4, score = 100
            //   89442404             | mov                 dword ptr [esp + 4], eax
            //   e8????????           |                     
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   8b0f                 | mov                 ecx, dword ptr [edi]

        $sequence_23 = { e8???????? 83ec08 891c24 c744241881000000 c744241400000000 c744241000000000 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   83ec08               | sub                 esp, 8
            //   891c24               | mov                 dword ptr [esp], ebx
            //   c744241881000000     | mov                 dword ptr [esp + 0x18], 0x81
            //   c744241400000000     | mov                 dword ptr [esp + 0x14], 0
            //   c744241000000000     | mov                 dword ptr [esp + 0x10], 0

        $sequence_24 = { c7410800000000 895908 833e00 7504 890e }
            // n = 5, score = 100
            //   c7410800000000       | mov                 dword ptr [ecx + 8], 0
            //   895908               | mov                 dword ptr [ecx + 8], ebx
            //   833e00               | cmp                 dword ptr [esi], 0
            //   7504                 | jne                 6
            //   890e                 | mov                 dword ptr [esi], ecx

        $sequence_25 = { 85c0 74e5 891c24 c744240400000000 e8???????? 83ec08 }
            // n = 6, score = 100
            //   85c0                 | test                eax, eax
            //   74e5                 | je                  0xffffffe7
            //   891c24               | mov                 dword ptr [esp], ebx
            //   c744240400000000     | mov                 dword ptr [esp + 4], 0
            //   e8????????           |                     
            //   83ec08               | sub                 esp, 8

        $sequence_26 = { 8b0f 85c9 742a 8d440b02 85c9 }
            // n = 5, score = 100
            //   8b0f                 | mov                 ecx, dword ptr [edi]
            //   85c9                 | test                ecx, ecx
            //   742a                 | je                  0x2c
            //   8d440b02             | lea                 eax, [ebx + ecx + 2]
            //   85c9                 | test                ecx, ecx

        $sequence_27 = { ff7510 ff750c 56 750f ff75ec }
            // n = 5, score = 100
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   56                   | push                esi
            //   750f                 | jne                 0x11
            //   ff75ec               | push                dword ptr [ebp - 0x14]

        $sequence_28 = { 89442408 e8???????? 0fb76f06 31ff }
            // n = 4, score = 100
            //   89442408             | mov                 dword ptr [esp + 8], eax
            //   e8????????           |                     
            //   0fb76f06             | movzx               ebp, word ptr [edi + 6]
            //   31ff                 | xor                 edi, edi

        $sequence_29 = { 01de 8b16 85d2 7449 8b4604 }
            // n = 5, score = 100
            //   01de                 | add                 esi, ebx
            //   8b16                 | mov                 edx, dword ptr [esi]
            //   85d2                 | test                edx, edx
            //   7449                 | je                  0x4b
            //   8b4604               | mov                 eax, dword ptr [esi + 4]

        $sequence_30 = { 8bf0 85f6 7509 33c0 5f }
            // n = 5, score = 100
            //   8bf0                 | mov                 esi, eax
            //   85f6                 | test                esi, esi
            //   7509                 | jne                 0xb
            //   33c0                 | xor                 eax, eax
            //   5f                   | pop                 edi

    condition:
        7 of them and filesize < 1196032
}