rule elf_satori_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects elf.satori."
        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/elf.satori"
        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 = { 56 31c9 53 83ec04 }
            // n = 4, score = 100
            //   56                   | push                esi
            //   31c9                 | xor                 ecx, ecx
            //   53                   | push                ebx
            //   83ec04               | sub                 esp, 4

        $sequence_1 = { 8d4508 66c1c808 66894104 0fb6442407 }
            // n = 4, score = 100
            //   8d4508               | lea                 eax, [ebp + 8]
            //   66c1c808             | ror                 ax, 8
            //   66894104             | mov                 word ptr [ecx + 4], ax
            //   0fb6442407           | movzx               eax, byte ptr [esp + 7]

        $sequence_2 = { e8???????? 5f 5d 6a09 a1???????? f7d8 50 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5d                   | pop                 ebp
            //   6a09                 | push                9
            //   a1????????           |                     
            //   f7d8                 | neg                 eax
            //   50                   | push                eax

        $sequence_3 = { 6a00 8d942444060000 52 e8???????? c7042420000000 }
            // n = 5, score = 100
            //   6a00                 | push                0
            //   8d942444060000       | lea                 edx, [esp + 0x644]
            //   52                   | push                edx
            //   e8????????           |                     
            //   c7042420000000       | mov                 dword ptr [esp], 0x20

        $sequence_4 = { e8???????? 83c410 eb30 6800400000 83c303 6a03 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   eb30                 | jmp                 0x32
            //   6800400000           | push                0x4000
            //   83c303               | add                 ebx, 3
            //   6a03                 | push                3

        $sequence_5 = { 50 8d842450060000 50 e9???????? 83ec0c 6a1d e8???????? }
            // n = 7, score = 100
            //   50                   | push                eax
            //   8d842450060000       | lea                 eax, [esp + 0x650]
            //   50                   | push                eax
            //   e9????????           |                     
            //   83ec0c               | sub                 esp, 0xc
            //   6a1d                 | push                0x1d
            //   e8????????           |                     

        $sequence_6 = { ba???????? b804000000 e8???????? b901000000 ba???????? b804000000 }
            // n = 6, score = 100
            //   ba????????           |                     
            //   b804000000           | mov                 eax, 4
            //   e8????????           |                     
            //   b901000000           | mov                 ecx, 1
            //   ba????????           |                     
            //   b804000000           | mov                 eax, 4

        $sequence_7 = { 5b 5e c3 55 57 31ff 56 }
            // n = 7, score = 100
            //   5b                   | pop                 ebx
            //   5e                   | pop                 esi
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   57                   | push                edi
            //   31ff                 | xor                 edi, edi
            //   56                   | push                esi

        $sequence_8 = { c7042420000000 89c6 e8???????? c7042420000000 89c3 e8???????? 57 }
            // n = 7, score = 100
            //   c7042420000000       | mov                 dword ptr [esp], 0x20
            //   89c6                 | mov                 esi, eax
            //   e8????????           |                     
            //   c7042420000000       | mov                 dword ptr [esp], 0x20
            //   89c3                 | mov                 ebx, eax
            //   e8????????           |                     
            //   57                   | push                edi

        $sequence_9 = { 740d 3c17 0f8598000000 e9???????? 80bb3404000002 0f8486000000 80bb3504000002 }
            // n = 7, score = 100
            //   740d                 | je                  0xf
            //   3c17                 | cmp                 al, 0x17
            //   0f8598000000         | jne                 0x9e
            //   e9????????           |                     
            //   80bb3404000002       | cmp                 byte ptr [ebx + 0x434], 2
            //   0f8486000000         | je                  0x8c
            //   80bb3504000002       | cmp                 byte ptr [ebx + 0x435], 2

    condition:
        7 of them and filesize < 122880
}