Leaderboard

Uploaded :)

Tutorial (Short version): The kgm does the following: 1) Looks for the file "duh!!.syk" in the same directory (folder), if not found, it loads showing one field only (badboy), else: 2) Reads the text line inside the file "duh!!.syk" & by using a simple (xor 0x40) with each character, result should read "TestingOurSync???", else (badboy) 3) Loads the full form showing both text fields (i.e: name & serial) & a check button. Now try: name: Chilling serial: o!h.$kLB[2E{(,YV;+X/]thj}H.(uCFT~1Wx2iWM;4T*)Y$S"1B.$wcS@J Click the check button & the kgm will: 4) Trims both strings, Base91 decodes the serial into: "26734308-=`~<-YAGAIV-2090603021-2C51325133CEA38" Checks to see if it has 5 parts (separated by "-"), else (badboy). More checks follow. 5) part1 must be 8 characters from "0123456789" 6) part2 must be 4 characters from "$+<=>|~" 7) part3 must be 6 characters from "ABCDEFGHIJKLMNOPQRSTUVWXYZ" 8) Build & check part4: a) Uppercase the constant "If I Only Knew" & add a null byte at start then SDBM Hash (Ozan Yigit) it (in reverse order): 0x57454E4B20594C4E4F204920464900 = 0x7D0BFCAF b) math: 0x7D0BFCAF xor 0x46 (a constant) = 0x7D0BFCE9 c) math: 0x7D0BFCE9 xor StrToInt(p1) 0x0197EEE4 = 0x7C9C120D d) IntToStr(0x7C9C120D) = "2090603021" <> p4 = "2090603021" 9) Check if trimmed name is 4 or more characters (kind of late), else bb 10) Let s1 be the result of joining: name + ' ' (space) + constant "Jalolo" ... "Chilling Jalolo" 11) Let s2 be the result of joining: s1 + constant "WhoamI?" ... "Chilling JaloloWhoamI?" 12) Generate a seed by applying same SDBM Hash method on s2 (uppercase, add a null byte at start, ...) to get: 0x3F494D414F48574F4C4F4C414A20474E494C4C49484300 = 0x0BE39B81 ... seed 13) Build & check part5: Using xxHash64 (Yann Collet), perform xxHash64(WideString(s1), Integer(seed)) = "2C51325133CEA38" <> to p5 If all goes well then (goodboy). Let me know if I've missed anything :) Other combinations: name: XorRanger's Go Figure Fixed!!! serial: Rz;aAkGuG3Xtlk>V;+/zV0Tj|H.(~*AShw`EwnLdR2<:9[ZXjDhb|v1X;Lc name: Happy New Year! serial: E2wbCkcMh2E{(v$M)L!cgvY0|HS*SCBSn!IbLm?R$J+BD+gSzwIzml&M7Ia kg.7z

Solved it already. Thanks to all for the help.

Just give me the binary

X0rby what ai engine used to get this code? Haven't tried your code yet will try it asap. Looks very clean and simple. Fixed my code from Hex-ray and this is the decompiled working ok code: Obfuscate_Data(uint8_t* input, uint8_t* output) { int v2; uint8_t buffer[12]; uint8_t* output_1; int v5; int i; uint8_t v7; uint8_t v8; uint8_t v9; uint8_t n117_1; int n12; uint8_t* v12; uint8_t v13; uint32_t internal_state; uint8_t state; uint8_t table_var; uint32_t table[11]; buffer[0] = input[1]; HIBYTE(table[4]) = *input; buffer[4] = input[2]; BYTE2(table[3]) = buffer[0]; buffer[0] = input[3]; BYTE1(table[5]) = buffer[4]; buffer[4] = input[4]; BYTE1(table[4]) = buffer[0]; buffer[0] = input[5]; HIBYTE(table[3]) = buffer[4]; buffer[4] = input[6]; LOBYTE(table[5]) = buffer[0]; buffer[0] = input[7]; LOBYTE(table[3]) = buffer[4]; buffer[4] = input[8]; BYTE2(table[4]) = buffer[0]; buffer[0] = input[9]; output_1 = output; LOBYTE(table[4]) = buffer[4]; BYTE1(table[3]) = buffer[0]; table[0] = 0x6F6D6564; table[1] = 0x4F4D4544; table[2] = 0x45444F4D; table_var = 0xEA; internal_state = 0; v2 = 0; for (i = 0; i < 10; ++i) { v7 = *((_BYTE*)&table[3] + i); v8 = v7 * (i + 1); LOBYTE(internal_state) = v8 + internal_state; v9 = BYTE1(internal_state) - v8; BYTE2(internal_state) += v7 * (i + 56); BYTE1(internal_state) -= v8; } n117_1 = table_var; BYTE2(table[5]) = LOBYTE(table[3]) * internal_state; HIBYTE(table[5]) = (LOBYTE(table[3]) * internal_state) ^ v9; state = (BYTE2(internal_state) ^ (HIBYTE(table[5]) + 1)) & 3; n12 = 0; while (1) { v12 = &output_1[n12]; v13 = 5 * n12++ + (n117_1 ^ *((_BYTE*)&table[3] + v12[(char*)table - (char*)output])); *v12 = v13; n117_1 = v13 + 34; if (n12 >= 12) break; output_1 = output; } output[12] = state | (4 * v2) & 0xC; return 1; }But i need function that reverses the output of the function. I mean to get the input if i have the output buffer already. PS. Tried X0rby code but no luck it didn't give good result. Only the first byte is encoded ok with this function.

#include <stdint.h> #include <string.h> #include <stdio.h> #ifndef _WIN32 #define __stdcall #endif int __stdcall ted(uint8_t* input_buf, uint8_t* output_buf, uint8_t arg_8) { uint8_t permuted_input[10]; permuted_input[0] = input_buf[6]; // var_10 permuted_input[1] = input_buf[9]; // var_F permuted_input[2] = input_buf[1]; // var_E permuted_input[3] = input_buf[4]; // var_D permuted_input[4] = input_buf[8]; // var_C permuted_input[5] = input_buf[3]; // var_B permuted_input[6] = input_buf[7]; // var_A permuted_input[7] = input_buf[0]; // var_9 permuted_input[8] = input_buf[5]; // var_8 permuted_input[9] = input_buf[2]; // var_7 uint8_t var_24[4] = {0, 0, 0, 0}; uint8_t key_string[] = { 0x6F, 0x6D, 0x65, 0x64, 0x4F, 0x4D, 0x45, 0x44, 0x45, 0x44, 0x4F, 0x4D }; uint8_t var_1D = 0xEA; for (int i = 0; i < 10; i++) { uint8_t val = permuted_input[i]; uint16_t product1 = (i + 1) * val; uint8_t p1_low = (uint8_t)product1; var_24[0] += p1_low; var_24[1] -= p1_low; uint16_t product2 = (i + 0x38) * val; var_24[2] += (uint8_t)product2; } uint8_t al = var_24[0] * permuted_input[0]; uint8_t bl = var_24[1] ^ al; var_24[2] = ((bl + 1) ^ var_24[2]) & 3; uint8_t current_dl = var_1D; for (int i = 0; i < 12; i++) { uint8_t key_char = key_string[i]; - // The original assembly does: mov al, [ebp + key_char + var_10] // This reads outside the 'permuted_input' array. uint8_t magic_byte = *( (&permuted_input[0]) + key_char ); uint8_t calculated = magic_byte ^ current_dl; uint8_t add_val = (uint8_t)(i * 5); calculated += add_val; output_buf[i] = calculated; current_dl = calculated + 0x22; } uint8_t final_byte = ((arg_8 * 4) & 0x0C) | var_24[2]; output_buf[12] = final_byte; return 1; } int main() { uint8_t input[] = {0,1,2,3,4,5,6,7,8,9}; uint8_t output[13]; ted(input, output, 0x10); return 0; }

pay them they will instantly do for you.

Try AI, grok will give you a much better code but you will need several iterations till it gets a working one

My previous video link is dead. Here below you can watch how to use my plugin.

To avoid blind guessing, I suggest you to get old iLO firmware packages and analyze them. See what conditions must be fulfilled in order to get the "SmartMemory" status. If my google-fu is working, Gen10 servers use iLO5, here is it's general spec: https://www.hpe.com/us/en/collaterals/collateral.c04154343.html, and here are the download links https://support.hpe.com/connect/s/softwaredetails?language=en_US&collectionId=MTX-2dc80c4ae4b943fa. It would appear that older firmware packages didn't use any encryption, just some (trivial) compression, making the job so much easier.

My server is working, i just migrated to docker. (Its WebDav , https) https://eddynet.cz:9865 File list is in attached files. content_250414.7z

I admit it, I'm just showing off, you can show off if you have the ability. Unfortunately, apart from jealousy, you are useless. You only fantasize about getting someone else's knowledge without any effort. Anyone with some level of proficiency will think and search for clues based on the documents I provide. Only someone like you who only wants to get something for nothing would make these unreasonable demands? Everyone knows who the joke is. You can you up, No can no BB

😁 I'm not asking you to share your src or tuts/offer a solution. But your reply in my topic are these useful? No - absolutely not. Only one sentence, one picture, and one RAR package. Even more unfortunately, some files in your RAR package are deliberately VM some code snippets. What can the downloaders learn from your RAR package? Besides the analysis reply I provided, which downloader provided an effective analysis reply? In this topic, you're just trying to get attention by showing-off that you can do this with some deliberately modified files that don't have any useful information. We're here to learn and share knowledge. If you don't want to share, that's fine. No need to brag, but if you do, I don't mind. In addition, this topic would like to give special thanks to @TRISTAN Pro for selflessly sharing his tutorials and knowledge.

Please record the process and post it, so we can get benefit from you. Regards. sean.

After spending three days i m still stuck at 4th challenge now i understand what it mean to be a reverse engineer. May be i will not solve all(or may be even the half of them) the challenge but i still try my best till the last day.

@Rurik: why the kdnet requirement? Why 2 virtual machines? I'm no kernel debugging wizard by any means, but here's a primitive setup that serves me well. WinDbg runs on my main machine, connects to VMWare guest machine via a named pipe. Pretty much everything was taken from this guide: https://www.triplefault.io/2017/07/setting-up-kernel-debugging-using.html 1) Windbg - I have a BAT file with the command-line. It's used only for kernel debugging: windbg -k com:pipe,port=\\.\pipe\com_1,resets=0,reconnect 2) VMWare guest is set up to have virtual com port that uses named pipe: 3) When necessary, I enable kernel debugging in VMWare guest using bcdedit commands from elevated command prompt: bcdedit /debug on bcdedit /dbgsettings serial debugport:1 baudrate:115200 4) Reboot the guest machine, it will freeze for ~30 seconds waiting for WinDbg to attach. 5) Run WinDbg from .BAT file, done. If you insist on running WinDbg in the other VM, you can still link 2 machines via virtual com port and named pipes. I just quickly tried, something like this: 1) set up VMWare with kernel debugging enabled just like before. 2) set up VMWare with Windbg to use com port like this: Notice "this end is the client" setting 3) Start VMWare with WinDbg, run WinDbg like this: windbg -k com:port=COM1,baud=115200 4) (re-)start VMWare with kernel debugging enabled, WinDbg should automagically attach.

I do not release the decoder but the code optimizer (not immediately), this is not specific to the oream vm, it is only far more effective than others. What do you say about angr or miasm or optimice or codedoctor ?? do we eliminate them all the tools for binary code analysis ?? I do not issue the decoder code because my hobby is a hobby and I do not want to give anybody a damn but reversing is sharing (I unfortunately belong to the old old reverser school). If I spoke good English I would probably share a lot more info and would not like others who just write for self-celebration. Do you know Scherzo or Softworm ?? I'm an old man who now deals with reversing and my only good luck is that the day they will all program in python or javascript I will not be there anymore..hahahahaha

Hi, I'm beginning not to ask for the program because I will not make it public, I do not want to harm anybody. Instead I will release the source code of the deobfuscator as soon as I have time to fix some points. @miraculix The deobfuser completely rebuilds the CFG (remove fake Jcc, Opaque Predicates etc .. etc ..) apply PeepHole (pattern recognition) remove DeadCode and Constant Folding and call analyzer and more. Thanks to the suggestions of @fvrmatteo I could try different peepHole solutions than the pattern recognition but the result was never as efficient as the use of pattern recognition so I use this solution at the moment (I reverse, not a conference at MIT code needs to work well .. hahahaha). I only use Pascal. As a disassembler engine use Capstone and as Emulator (for small portions of code) use Unicorn Engine.Not use Virtual Machines Symbolic Execution Phyton script etc .. etc .. Place a small video to give an idea. deob.rar

First you say Themida is trashtier, then you pick a far inferior packer and state that it is better..? People need to start realizing, that if you have no clue what you're talking about, you should either start your sentence with "I assume" or you shouldn't say anything at all. Silence is bliss. VMProtect is actually rather bad, as the virtual machine in VMProtect is really easy to crack. If you have to choose between Themida and VMProtect, you should always pick Themida. Why? Because Themidas virtual machines are much more advanced and much harder to crack than VMProtect. Themida was initially known for their CISC VM which was (at the time) very strong. It has since been defeated (by Deathway) and is now considered weak (since it's actually rather simple once you start to understand it). VMProtect's virtual machine is almost an exact replica of the Themida CISC VM featuring stronger obfuscation, and as such it works in the exact same way, which makes it (almost) equally weak. Since then, Themida developed the RISC machine (RISC64 and RISC128), which was against defeated by Deathway. They then proceeded to develop the FISH and TIGER machines, which features very new tricks such as complex combined handlers (FISH) doing multiple operations each instead of a handler for each operation like CISC had, and also internal (yet simple) cryptography. The TIGER VM is very similar to the FISH VM (since it is built on the same engine), but doesn't utilize the cryptographic internal registers, etc. Themida also features hybrid virtual machines, such as SHARK, which is FISH virtualized by TIGER, or PUMA, which is TIGER virtualized by FISH. The newest machine(s) from Themida is the DOLPHIN machine, which is yet another layer of complexity upon the newer FISH/TIGER engine, while also supplying a hybrid VM called EAGLE, which is FISH virtualized by DOLPHIN (if memory serves right). If you want to compare the complexity of the newer Themida VMs (e.g. EAGLE) vs. VMProtect's VM, you're probably looking at a complexity scale saying 15:1 or something like that. TL;DR Don't listen to the guys above, as they are completely clueless on the topic. Pick Themida if you have to choose between the two of them.

Haven't touched this project for a long time. So I worked this weekend on updating the script and catching up with all the changes that they did in the last 1-2 years. Everything works right now except for TIGER. They added a new weird "push" handler, which is very different from any other TIGER handler. (the offset for the push isn't from a parameter, but from a call to another function that return an internal state value, usually that internal state value is used with a parameter to get the wanted real value, but this time it is used just with a constant number... in your binary for example one such handler is at 0x0562AC9). Nothing too bad, but I ran out of time for this weekend. I will do it during this week and update this comment with the devirtualized tiger when it is done. Except for that most of the changes were small. Some of them are fixing bugged handlers, other are adding some small protection templates to the handlers. One change that they did was not reseting the state when re-entering the vm after external instruction execution. (instructions that they don't virtualize). Another change was changing the start of the vm. Until now the start of the vm was something like that: (They push all the registers to the stack before they enter the vm) pop VM_REG_1 pop VM_REG_2 pop VM_REG_3 .. They changed it to: (in a random order) mov VM_REG_1, [esp] mov VM_REG_2, [esp+4] mov VM_REG_3, [esp+8] ... add esp, ... Another change is obfuscating the ending of some of the FISH and TIGER handlers. The FISH(32/64) BLACK is probably the most annoying vm. since the handlers are heavily obfuscated, with fake conditional jumps and all of that shit. One big handler can be 100000+ instructions. So even a small bug when handling it can fornication up everything. It is probably the safest vm because of that but also really really slow. oh, and in 64-bit my compiled devirtualized code isn't the same size as the original code, I am not sure why is that, which of the compiled opcodes take more space than the original . But I still had enough space for the devirtualized code in the original address because of the surrounding macros. devirtualizeme_tmd_2.4.6.0_fish32.devirtualize.clean.exe.7z devirtualizeme_tmd_2.4.6.0_fish64.devirtualize.clean.exe.7z

Chances are that first packet, because your on a TCP/IP network is a broadcast for the MAC address if its not already been found and cached? But you should be able to confirm this by pinging the device and sniffing the packets... Ted.

Well, you found the line where it crashes but the problem is much deeper. It's caused by pointers and memory reallocation. Something like this: Line 117: if FileToBytes(szFilePath, bFile) then // allocates a memory for TByteArray Line 134: IID := @bFile[dwIATPos]; // IID is a pointer into current TByteArray Line 145: SetLength(bFile, Length(bFile) + dwSize); // resizes TByteArray, memory is not reallocated yet Line 148: CopyMemory(@bFile[dwPos], @Imports.szLibName[1], Length(Imports.szLibName)); // first write into resized array, Delphi memory manager reallocates memory. IID is a pointer into garbage now. Line 149: IID.Name := OffsetToRVA(dwPos, ISH.VirtualAddress, ISH.PointerToRawData); // crash! Your code is quite a mess, so it's hard to give a suggestion how to fix it properly. I'd try avoid using pointers into bFile at all costs. Cheers, kao.

char v2; // al char v3; // dl char v4; // cl char v5; // dl char v6; // cl char v7; // dl char v8; // cl char v9; // dl char v10; // cl char v11; // dl int v12; // esi char v13; // al int i; // ecx char v15; // dl char v16; // al char v17; // bl char v18; // dl int v19; // ecx _BYTE *v20; // esi char v21; // al int v23; // [esp+14h] [ebp-24h] char v24; // [esp+16h] [ebp-22h] char v25; // [esp+1Bh] [ebp-1Dh] int v26; // [esp+1Ch] [ebp-1Ch] BYREF int v27; // [esp+20h] [ebp-18h] int v28; // [esp+24h] [ebp-14h] _BYTE v29[11]; // [esp+28h] [ebp-10h] char v30; // [esp+33h] [ebp-5h] v3 = a1[1]; v29[7] = *a1; v4 = a1[2]; v29[2] = v3; v5 = a1[3]; v29[9] = v4; v6 = a1[4]; v29[5] = v5; v7 = a1[5]; v29[3] = v6; v8 = a1[6]; v29[8] = v7; v9 = a1[7]; v29[0] = v8; v10 = a1[8]; v29[6] = v9; v11 = a1[9]; v12 = a2; v13 = 4 * v2; v29[4] = v10; v29[1] = v11; v26 = 1684368751; v27 = 1145392463; v28 = 1297040453; v25 = -22; v23 = 0; for ( i = 0; i < 10; ++i ) { v15 = v29[i]; v16 = v15 * (i + 1); LOBYTE(v23) = v16 + v23; v17 = BYTE1(v23) - v16; BYTE2(v23) += v15 * (i + 56); BYTE1(v23) -= v16; } v18 = v25; v29[10] = v29[0] * v23; v30 = (v29[0] * v23) ^ v17; v24 = (BYTE2(v23) ^ (v30 + 1)) & 3; v19 = 0; while ( 1 ) { v20 = (_BYTE *)(v19 + v12); v21 = 5 * v19++ + (v18 ^ v29[(unsigned __int8)v20[(_DWORD)&v26 - a2]]); *v20 = v21; v18 = v21 + 34; if ( v19 >= 12 ) break; v12 = a2; } *(_BYTE *)(a2 + 12) = v24 | (4 * v2) & 0xC; return 1; }This is what i got from hex-rays but it is very bad and useless decompiled code.

The target has a license server that collects minimal, anonymized information about the launch. Information about debugger detections, code integrity violations, launches in virtual environment, etc. is also transmitted to the license server. Most likely, you simply did not reach the point where the application would display a MessageBox with a message about detecting a debugger. The debugger was detected by 3 out of 3 methods, ScyllaHide was unable to deceive any of them. The screenshot shows the log of your last target launch.