rule win_pwnpos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.pwnpos."
        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.pwnpos"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 68???????? bb05000000 52 899c2468020000 e8???????? 83c40c }
            // n = 6, score = 100
            //   68????????           |                     
            //   bb05000000           | mov                 ebx, 5
            //   52                   | push                edx
            //   899c2468020000       | mov                 dword ptr [esp + 0x268], ebx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_1 = { 8b4508 c7400801000000 8b4808 8b0c8d84644400 }
            // n = 4, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   c7400801000000       | mov                 dword ptr [eax + 8], 1
            //   8b4808               | mov                 ecx, dword ptr [eax + 8]
            //   8b0c8d84644400       | mov                 ecx, dword ptr [ecx*4 + 0x446484]

        $sequence_2 = { 8d8dbcf9ffff 3985b4f9ffff 8b85a0f9ffff 7306 8d85a0f9ffff 51 }
            // n = 6, score = 100
            //   8d8dbcf9ffff         | lea                 ecx, [ebp - 0x644]
            //   3985b4f9ffff         | cmp                 dword ptr [ebp - 0x64c], eax
            //   8b85a0f9ffff         | mov                 eax, dword ptr [ebp - 0x660]
            //   7306                 | jae                 8
            //   8d85a0f9ffff         | lea                 eax, [ebp - 0x660]
            //   51                   | push                ecx

        $sequence_3 = { 3bf7 0f95c0 85c0 792c 8b550c 8b45f8 52 }
            // n = 7, score = 100
            //   3bf7                 | cmp                 esi, edi
            //   0f95c0               | setne               al
            //   85c0                 | test                eax, eax
            //   792c                 | jns                 0x2e
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   52                   | push                edx

        $sequence_4 = { 8b56f8 8b4204 c74430f8???????? 8b4ee8 8b5104 c74432e848ed4300 8b4df4 }
            // n = 7, score = 100
            //   8b56f8               | mov                 edx, dword ptr [esi - 8]
            //   8b4204               | mov                 eax, dword ptr [edx + 4]
            //   c74430f8????????     |                     
            //   8b4ee8               | mov                 ecx, dword ptr [esi - 0x18]
            //   8b5104               | mov                 edx, dword ptr [ecx + 4]
            //   c74432e848ed4300     | mov                 dword ptr [edx + esi - 0x18], 0x43ed48
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]

        $sequence_5 = { 83c702 83c102 89bd34ffffff 898d40ffffff 3bfa 0f826afeffff 8a8547ffffff }
            // n = 7, score = 100
            //   83c702               | add                 edi, 2
            //   83c102               | add                 ecx, 2
            //   89bd34ffffff         | mov                 dword ptr [ebp - 0xcc], edi
            //   898d40ffffff         | mov                 dword ptr [ebp - 0xc0], ecx
            //   3bfa                 | cmp                 edi, edx
            //   0f826afeffff         | jb                  0xfffffe70
            //   8a8547ffffff         | mov                 al, byte ptr [ebp - 0xb9]

        $sequence_6 = { 83c404 c745fcffffffff 83bd78ffffff10 c745e80f000000 895de4 885dd4 }
            // n = 6, score = 100
            //   83c404               | add                 esp, 4
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   83bd78ffffff10       | cmp                 dword ptr [ebp - 0x88], 0x10
            //   c745e80f000000       | mov                 dword ptr [ebp - 0x18], 0xf
            //   895de4               | mov                 dword ptr [ebp - 0x1c], ebx
            //   885dd4               | mov                 byte ptr [ebp - 0x2c], bl

        $sequence_7 = { 8b4c2424 51 8d4c2458 e8???????? eb2d 8b542434 }
            // n = 6, score = 100
            //   8b4c2424             | mov                 ecx, dword ptr [esp + 0x24]
            //   51                   | push                ecx
            //   8d4c2458             | lea                 ecx, [esp + 0x58]
            //   e8????????           |                     
            //   eb2d                 | jmp                 0x2f
            //   8b542434             | mov                 edx, dword ptr [esp + 0x34]

        $sequence_8 = { 50 e8???????? 83c404 c745fcffffffff 83bd78ffffff10 }
            // n = 5, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   83bd78ffffff10       | cmp                 dword ptr [ebp - 0x88], 0x10

        $sequence_9 = { 7567 8b8c15acfeffff 8b11 8b5228 6a01 6a02 57 }
            // n = 7, score = 100
            //   7567                 | jne                 0x69
            //   8b8c15acfeffff       | mov                 ecx, dword ptr [ebp + edx - 0x154]
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   8b5228               | mov                 edx, dword ptr [edx + 0x28]
            //   6a01                 | push                1
            //   6a02                 | push                2
            //   57                   | push                edi

    condition:
        7 of them and filesize < 638976
}