rule win_findpos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        version = "1"
        description = "Detects win.findpos."
        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.findpos"
        malpedia_rule_date = "20220513"
        malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26"
        malpedia_version = "20220516"
        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 = { ba68cb7a76 873a bfe5920925 3f 2afa b4c5 b7cb }
            // n = 7, score = 100
            //   ba68cb7a76           | mov                 edx, 0x767acb68
            //   873a                 | xchg                dword ptr [edx], edi
            //   bfe5920925           | mov                 edi, 0x250992e5
            //   3f                   | aas                 
            //   2afa                 | sub                 bh, dl
            //   b4c5                 | mov                 ah, 0xc5
            //   b7cb                 | mov                 bh, 0xcb

        $sequence_1 = { 751a 2bca 84db 7414 42 }
            // n = 5, score = 100
            //   751a                 | jne                 0x1c
            //   2bca                 | sub                 ecx, edx
            //   84db                 | test                bl, bl
            //   7414                 | je                  0x16
            //   42                   | inc                 edx

        $sequence_2 = { e8???????? 6a00 6a01 8d4c2418 e9???????? 68???????? 8d4c242c }
            // n = 7, score = 100
            //   e8????????           |                     
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   e9????????           |                     
            //   68????????           |                     
            //   8d4c242c             | lea                 ecx, [esp + 0x2c]

        $sequence_3 = { 46 41 3bca 7ced 3bfb 7d10 }
            // n = 6, score = 100
            //   46                   | inc                 esi
            //   41                   | inc                 ecx
            //   3bca                 | cmp                 ecx, edx
            //   7ced                 | jl                  0xffffffef
            //   3bfb                 | cmp                 edi, ebx
            //   7d10                 | jge                 0x12

        $sequence_4 = { 8b75f8 3bf7 75cb 813d????????c8000000 }
            // n = 4, score = 100
            //   8b75f8               | mov                 esi, dword ptr [ebp - 8]
            //   3bf7                 | cmp                 esi, edi
            //   75cb                 | jne                 0xffffffcd
            //   813d????????c8000000     |     

        $sequence_5 = { 834dfcff 6a00 6a01 e8???????? eb02 }
            // n = 5, score = 100
            //   834dfcff             | or                  dword ptr [ebp - 4], 0xffffffff
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   e8????????           |                     
            //   eb02                 | jmp                 4

        $sequence_6 = { 51 ff15???????? 8b45f8 891d???????? 6a04 6800300000 }
            // n = 6, score = 100
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   891d????????         |                     
            //   6a04                 | push                4
            //   6800300000           | push                0x3000

        $sequence_7 = { 6800800000 53 51 ff15???????? }
            // n = 4, score = 100
            //   6800800000           | push                0x8000
            //   53                   | push                ebx
            //   51                   | push                ecx
            //   ff15????????         |                     

        $sequence_8 = { 8945f8 8d45f8 50 c745ec00200000 ff15???????? 85c0 745f }
            // n = 7, score = 100
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   50                   | push                eax
            //   c745ec00200000       | mov                 dword ptr [ebp - 0x14], 0x2000
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   745f                 | je                  0x61

        $sequence_9 = { 02d0 8875fb 8855fa 33c9 }
            // n = 4, score = 100
            //   02d0                 | add                 dl, al
            //   8875fb               | mov                 byte ptr [ebp - 5], dh
            //   8855fa               | mov                 byte ptr [ebp - 6], dl
            //   33c9                 | xor                 ecx, ecx

    condition:
        7 of them and filesize < 286720
}