rule win_pinchduke_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.pinchduke."
        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.pinchduke"
        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 = { 57 89442418 ffd3 6825050000 e8???????? }
            // n = 5, score = 100
            //   57                   | push                edi
            //   89442418             | mov                 dword ptr [esp + 0x18], eax
            //   ffd3                 | call                ebx
            //   6825050000           | push                0x525
            //   e8????????           |                     

        $sequence_1 = { 68???????? e8???????? 8b7d08 8bcf e8???????? 8d45e8 50 }
            // n = 7, score = 100
            //   68????????           |                     
            //   e8????????           |                     
            //   8b7d08               | mov                 edi, dword ptr [ebp + 8]
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     
            //   8d45e8               | lea                 eax, [ebp - 0x18]
            //   50                   | push                eax

        $sequence_2 = { 53 56 57 7420 8b7c2414 8a1f 84db }
            // n = 7, score = 100
            //   53                   | push                ebx
            //   56                   | push                esi
            //   57                   | push                edi
            //   7420                 | je                  0x22
            //   8b7c2414             | mov                 edi, dword ptr [esp + 0x14]
            //   8a1f                 | mov                 bl, byte ptr [edi]
            //   84db                 | test                bl, bl

        $sequence_3 = { 7d4f 53 57 bf???????? 50 8bcf e8???????? }
            // n = 7, score = 100
            //   7d4f                 | jge                 0x51
            //   53                   | push                ebx
            //   57                   | push                edi
            //   bf????????           |                     
            //   50                   | push                eax
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     

        $sequence_4 = { 8b5510 c1e004 03c6 8d4dd0 e8???????? 5f 5e }
            // n = 7, score = 100
            //   8b5510               | mov                 edx, dword ptr [ebp + 0x10]
            //   c1e004               | shl                 eax, 4
            //   03c6                 | add                 eax, esi
            //   8d4dd0               | lea                 ecx, [ebp - 0x30]
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_5 = { 8bf0 0fb745f4 50 0fb745f2 50 0fb745f0 50 }
            // n = 7, score = 100
            //   8bf0                 | mov                 esi, eax
            //   0fb745f4             | movzx               eax, word ptr [ebp - 0xc]
            //   50                   | push                eax
            //   0fb745f2             | movzx               eax, word ptr [ebp - 0xe]
            //   50                   | push                eax
            //   0fb745f0             | movzx               eax, word ptr [ebp - 0x10]
            //   50                   | push                eax

        $sequence_6 = { 85c0 59 75eb 8b450c 53 e8???????? 59 }
            // n = 7, score = 100
            //   85c0                 | test                eax, eax
            //   59                   | pop                 ecx
            //   75eb                 | jne                 0xffffffed
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   53                   | push                ebx
            //   e8????????           |                     
            //   59                   | pop                 ecx

        $sequence_7 = { 03d1 33c0 390424 b05c 7403 f366ab 59 }
            // n = 7, score = 100
            //   03d1                 | add                 edx, ecx
            //   33c0                 | xor                 eax, eax
            //   390424               | cmp                 dword ptr [esp], eax
            //   b05c                 | mov                 al, 0x5c
            //   7403                 | je                  5
            //   f366ab               | rep stosw           word ptr es:[edi], ax
            //   59                   | pop                 ecx

        $sequence_8 = { 68???????? e8???????? 83c410 2bf0 56 68???????? e8???????? }
            // n = 7, score = 100
            //   68????????           |                     
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   2bf0                 | sub                 esi, eax
            //   56                   | push                esi
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_9 = { 8945fc e8???????? 0fbe00 0345fc 8d4ddc d1f8 50 }
            // n = 7, score = 100
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   e8????????           |                     
            //   0fbe00               | movsx               eax, byte ptr [eax]
            //   0345fc               | add                 eax, dword ptr [ebp - 4]
            //   8d4ddc               | lea                 ecx, [ebp - 0x24]
            //   d1f8                 | sar                 eax, 1
            //   50                   | push                eax

    condition:
        7 of them and filesize < 223680
}