dos exe relocation table

unused The slot number of this relocation must be one (1). A reference to the 16-bit location that contains the VA of the target symbol. Instead, the locations are defined by pointers in the optional header or a section header. bapi, weixin_43354145: The default for Windows CE EXEs is 0x00010000. The MBR holds the information on how the disc's Complete the archiving task before using on copying volumes. The same goes for Microsoft's own cross-platform .NET Core. For more information on using the ImageHlp API to enumerate, add, and remove certificates from PE Files, see ImageHlp Functions. The following relocation type indicators are defined for PowerPC processors. Not every function in the image file must have FPO information defined for it, even though debug type is FPO. The entries must be sorted according to the function addresses (the first field in each structure) before being emitted into the final image. The size must be in the range [2,32]. The Name field has one of the formats shown in the following table. This area commonly contains debug information. The loader typically processes the binding. This is padded with nulls if it is less than the maximum length. This is not a problem, because there are user scenarios that depend on re-signing PE images or adding a time stamp. Sometimes lc=4 gives gain for big files. Registered exception handler data (free format and x86/object only). Image files do not contain COFF relocations, because all referenced symbols have already been assigned addresses in a flat address space. {ParamName}{ParamValue}, if {ParamValue} is number and {ParamName} doesn't contain numbers. Those functions that do not have FPO information are assumed to have normal stack frames. Portable Executables (PE) use Import Address Table (IAT) to lookup function names and their memory addresses when they need to be called during runtime. For exported symbols that do have export names, corresponding entries in the export name pointer table and export ordinal table work together to associate each name with an ordinal. Stored in the remaining 12 bits of the WORD, an offset from the starting address that was specified in the Page RVA field for the block. bCertificate contains an X.509 Certificate, bCertificate contains a PKCS#7 SignedData structure, Terminal Server Protocol Stack Certificate signing. The ReflectiveLoader will now allocate a continuous region of memory into which it will proceed to load its own image. 2.) The default mode is s=on. IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | IMAGE _SCN_GPREL The IMAGE_SCN_GPREL flag should be set for IA64 architectures only; this flag is not valid for other architectures. IDM Members' meetings for 2022 will be held from 12h45 to 14h30.A zoom link or venue to be sent out before the time.. Wednesday 16 February; Wednesday 11 May; Wednesday 10 August; Wednesday 09 November This allows the symbol table format to be extended to add new auxiliary records, without breaking existing tools. When zero, the Type field is interpreted as a symbol table index for a function. WebFind software and development products, explore tools and technologies, connect with other developers and more. A COFF object with no registered SEH handlers would have the "@feat.00" symbol, but no .sxdata section. The position of this table is found by taking the symbol table address in the COFF header and adding the number of symbols multiplied by the size of a symbol. In this format, bit 31 is the most significant bit for PE32 and bit 63 is the most significant bit for PE32+. It is used also to associate parameters with methods. 1. PPMd is a PPM-based algorithm based on Dmitry Shkarin's PPMdH source code. The IMAGE_SCN_GPREL flag is for object files only; when this section type appears in an image file, the IMAGE_SCN_GPREL flag must not be set. This is a common tactic used by shellcode. The size of the code (text) section, or the sum of all code sections if there are multiple sections. The offset from the current instruction in longwords. WebIn computing, Windows on Windows (commonly referred to as WOW), was a compatibility layer of 32-bit versions of the Windows NT family of operating systems since 1993 with the release of Windows NT 3.1, which extends NTVDM to provide limited support for running legacy 16-bit programs written for Windows 3.x or earlier. OEM Information. The signature consists of the following ASCII characters, in which each character below is represented literally, except for the newline (\n) character: Each member (linker, longnames, or object-file member) is preceded by a header. This is set to zero if there are no COFF line numbers. #define IMAGE_GUARD_CFW_INSTRUMENTED 0x00000200. This option affects only compression (with any method) and decompression of BZip2 streams. This specification describes the structure of executable (image) files and object files under the Windows family of operating systems. The data for each section is located at the file offset that was given by the PointerToRawData field in the section header. This is valid only for object files. tests all files in archive.7z.001. If you have a multiprocessor or multicore system, you can get a speed increase with this switch. WebPEportable File FormatDLLexePEPEPE volatilityfoundation/volatility Wiki, GitHub - nettitude/SimplePELoader: In-Memory PE Loader, Detecting Reflective DLL Injection with Volatility, Reflective DLL injection is a technique that allows an attacker to inject a DLL's into a victim process, Test reflective DLL injection capability in metasploit, Implement a simple reflective DLL injection POC by myself, The way the reflective injection works is nicely described by the technique's original author Stephen Fewer. Align data on a 512-byte boundary. Default value is "yes". Sets Compressing Mode: 0 = fast, 1 = normal. It is supported only for purposes of verifying legacy Authenticode signatures. A standard record defines a symbol or name and has the following format. The Type field of the relocation record indicates what kind of relocation should be performed. File in archive is older than the file on disk. At location 0x3c, the stub has the file offset to the PE signature. Each string begins immediately after the null byte in the previous string. Such files are considered executable files for almost all purposes, although they cannot be directly run. Align data on a 2048-byte boundary. The VA where Control Flow Guard long jump target table is stored. A reference to the 32-bit location that is the size of the section that contains the target symbol. This information is required for incremental linking to work correctly. To review, open the file in an editor that reveals hidden Unicode characters. The number of entries in the export address table. For .lf records, the Value field gives the number of source lines in the function. Other image files can import a symbol by using an index to this table (an ordinal) or, optionally, by using the public name that corresponds to the ordinal if a public name is defined. Because the DLL/EXE is loaded reflectively, it is not displayed when tools are used to list the DLLs of a running process. Each import directory entry has the following format: An import lookup table is an array of 32-bit numbers for PE32 or an array of 64-bit numbers for PE32+. [2] The PE format is a data structure that encapsulates the information necessary for the Windows OS loader to manage the wrapped executable code. The export ordinal table is an array of 16-bit unbiased indexes into the export address table. Contains the certificate version number. The total size of the section when loaded into memory. Each debug directory entry identifies the location and size of a block of debug information. The first table determines Type ID, the second table (pointed to by the directory entry in the first table) determines Name ID, and the third table determines Language ID. Multiple update switches are supported. The number of instructions in the function's prolog. A formal argument (parameter) of a function. 623 (0x26F) {Illegal System DLL Relocation} The system DLL %hs was relocated in memory. This section contains Visual C++ debug information (symbolic information). The VA of the sorted table of RVAs of each Control Flow Guard function in the image. Sets Match Finder for LZMA. This directory consists of an array of debug directory entries whose location and size are indicated in the image optional header. This is set to zero for executable images. See "IMAGE_DEBUG_TYPE_FPO" in Debug Type. WebWooden dining table with 6 chairs. WebBrowse our listings to find jobs in Germany for expats, including jobs for English speakers or those in your native language. When the Windows 95 line of operating systems was designed, a key requirement was for the file system to keep backward compatibility with 8.3 filenames to allow legacy applications to continue to work on the platform. The default for WindowsNT, Windows 2000, WindowsXP, Windows95, Windows98, and WindowsMe is 0x00400000. Prop 30 is supported by a coalition including CalFire Firefighters, the American Lung Association, environmental organizations, electrical workers and businesses that want to improve Californias air quality by fighting and preventing wildfires and reducing air pollution from vehicles. are injected into the victim process when the metasploit's post-exploitation module executes. Repeat step 3 for each successive certificate until the calculated offset equals 0x6000 (0x5000 start + 0x1000 total size), which indicates that you've walked the entire table. Such a record has a symbol name that is the name of a section (such as .text or .drectve) and has storage class STATIC (3). The archive member is the longnames member, which consists of a series of null-terminated ASCII strings. If you specify {N}, 7-Zip tries to use N threads. The section contains data referenced through the global pointer (GP). WebERROR_BAD_FUNCTION_TABLE. For a link to the function's reference page, see References. Eg; 7z a "c:\Documents and Settings\JDoe\Desktop\archive_name.zip" "c:\Documents and Settings\JDoe\Desktop\file_name.txt" creates a ZIP formatted archive and adds the specified text file to it. For example, BCJ2 encoder has one input stream and four output streams. This is valid only when the target symbol is absolute and can be sign-extended to its original value. IMAGE_SCN_LNK_INFO Contains the symbol index of each of the exception handlers being referred to by the code in that object file. Therefore, the application is not specific to Windows XP and can run on any Win32 system. All 16-bit programs run by default in a single virtual DOS machine with shared memory space. The mapping from an RVA in image to an RVA in source image. By convention, the names are treated as zero-terminated UTF-8 encoded strings. This relocation is only meaningful when the machine type is LoongArch 64-bit. WebThe section from the MS-DOS 2.0 Compatible EXE Header through to the unused section just before the PE header is the MS-DOS 2.0 Section, and is used for MS-DOS compatibility only. For list files, 7-Zip uses UTF-8 encoding by default and supports multiple lists files. Stored in the high 4 bits of the WORD, a value that indicates the type of base relocation to be applied. The COMDAT selection number. Optional, the process ID of the remote process to inject the DLL in to. In most cases, the format of each stamp is the same as that used by the time functions in the C run-time library. WebThe Portable Executable (PE) format is a file format for executables, object code, DLLs and others used in 32-bit and 64-bit versions of Windows operating systems. The loader is not required to process base relocations that are resolved by the linker, unless the load image cannot be loaded at the image base that is specified in the PE header. The 26-bit relative displacement to the target, for B and BL instructions. Microsoft reserves the right to alter this document without notice. The pointers are ordered lexically to allow binary searches. The Value field specifies the n th member. For details, see the following text. The size of section data; the same as SizeOfRawData in the section header. characters. The function's auxiliary record in the symbol table has a pointer to the Linenumber field that points to this same line-number record. Sometimes it simply presents undesirable characteristics (for example, debugging information cannot be removed from publicly released files); sometimes it is simply impossible. If not injecting in to remote process, ignore this. For such files, the location of section data in the file must match its location in memory when the image is loaded, so that the physical offset for section data is the same as the RVA. Zero padding is inserted between the original end of the file and the beginning of the attribute certificate table to achieve this alignment. If {SFX_Module} is not assigned, 7-Zip will use standard console SFX module 7zCon.sfx. Module does not make use of the /GS security cookie. The Portable Executable (PE) format is a file format for executables, object code, DLLs and others used in 32-bit and 64-bit versions of Windows operating systems. The name pointer table, ordinal table, and export name table all exist to support use of export names. The resulting ordinal is an index into the export address table, which gives the actual location of the desired symbol. The name of the archive member is located at offset n within the longnames member. Process heap flags that correspond to the first argument of the HeapCreate function. WebIn computing, Windows on Windows (commonly referred to as WOW), was a compatibility layer of 32-bit versions of the Windows NT family of operating systems since 1993 with the release of Windows NT 3.1, which extends NTVDM to provide limited support for running legacy 16-bit programs written for Windows 3.x or earlier. The 16-bit signed displacement of the target relative to the GP register. This tool can be run on remote servers by supplying a local Windows PE file (DLL/EXE) to load in to memory on the remote system, For more information, see, An enumerated value that represents storage class. This auxiliary symbol generally follows the IMAGE_SYM_CLASS_CLR_TOKEN. //LPVOID dllBase = VirtualAlloc((LPVOID)0x000000191000000, dllImageSize, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE); // get delta between this module's image base and the DLL that was read into memory, // copy over DLL image headers to the newly allocated space for the DLL, // copy over DLL image sections to the newly allocated space for the DLL, PIMAGE_IMPORT_DESCRIPTOR importDescriptor. The target platform determines which of the three function table entry format variations described below is used. A reference to the 8-bit location whose low 4 bits contain the VA of the target symbol. The file offset of the COFF symbol table, or zero if no COFF symbol table is present. The rest of the archive consists of a series of archive members, as follows: The first and second members are "linker members." For more information, see, The load configuration table address and size. this script to accomodate this. A weak external. The base relocation applies to a 64-bit absolute address formed in four consecutive instructions. A new process has started, including the first thread. It is currently set to zero. A bigger number can give a little bit better compression ratio and a slower compression process. An export name is defined only if the export name pointer table contains a pointer to it. See DLL Characteristics in section Optional Header Windows-Specific Fields (Image Only). If the bCertificate content does not end on a quadword boundary, the attribute certificate entry is padded with zeros, from the end of bCertificate to the next quadword boundary. The MBR holds the information on how the disc's Two-byte-aligned Unicode strings, which serve as string data that is pointed to by directory entries. An index into the export name pointer table. Following a bumpy launch week that saw frequent server trouble and bloated player queues, Blizzard has announced that over 25 million Overwatch 2 players have logged on in its first 10 days. Image only. This relocation is meaningful only when the machine type is Thumb. This information appears after the header: The elements in the offsets array must be arranged in ascending order. A 14-bit PC-relative offset to the symbol's location. A tag already exists with the provided branch name. This is a common tactic used by shellcode. The base relocation applies to the high 20 bits of a 32-bit absolute address. A pointer to a cookie that is used by Visual C++ or GS implementation. 0x30 bytes earlier, we can see some suspect memory addresses and the call instruction almost immediatley after that: Upon inspecting those two addresses - they are indeed holding the values the. The addition/extension of DOS object files is .obj, and the extension of UNIX is o. The relocation target must be absolute or the image must be fixed. Filters must be used with one of the compression method (for example, BCJ + LZMA). Note: gzip or bzip2 formats support only one file per archive. If a definition of sym1 is not linked, then all references to the weak external for sym1 refer to sym2 instead. There is no terminating null character in any of these fields. "Sinc Deflate64 increases the dictionary size for Deflate and achieves better compression. Eg; 7z a -p 7Zip_Archive Test_file.txt creates a 7z formatted archive named 7Zip_Archive that is protected with a password , then adds a file named test_file.txt to the archive. This section describes how a PE image hash is calculated and what parts of the PE image can be modified without invalidating the Authenticode signature. Fields that are defined for all implementations of COFF, including UNIX. The resource directory string area consists of Unicode strings, which are word-aligned. The raw data of this debug entry may be empty, or may contain a calculated hash value preceded by a four-byte value that represents the hash value length. - " - Disables any updates in the base archive which is the archive assigned by "base_archive_name" on the command line. The function pointers are accessed by using the expression pINT->u1.Function. Use for periodic data where T=2(lp) Eg; for 32-bit (4 bytes) periodic data, use lp=2. On the unload request, the library can be freed, the *phmod cleared, and the UIAT written over the IAT to restore everything to its preload state. All contributions with the same object-section name are allocated contiguously in the image, and the blocks of contributions are sorted in lexical order by object-section name. If you do not specify any symbol from the set [b|k|m], the memory size will be calculated as (2^Size) bytes. Methods that have smaller numbers will be used before others. For example: 7z a -t7z Archive.7z TestFile.txt -m. Syntax: Use the -tzip switch after the "a" command or specify "archive_name.zip" to create a Zip archive. The Value field indicates the size if the section number is IMAGE_SYM_UNDEFINED (0). This feature is supported only in 7z format. The ShortName field in a symbol table consists of 8bytes that contain the name itself, if it is not more than 8bytes long, or the ShortName field gives an offset into the string table. Before proceeding, note that my test DLL I will be using for this POC is just a simple MessageBox that gets called once the DLL is loaded into the process: Below shows the first Import Descriptor of my test DLL. For more information, see. This string is case sensitive and terminated by a null byte. The major version number. The section should not be padded to the next boundary. The high 16 bits of the target's 32-bit VA. As the library's image will currently exists in an arbitrary location in memory the ReflectiveLoader will first calculate its own image's current location in memory so as to be able to parse its own headers for use later on. For a link to the function's reference page, see References. The correspondence is by position; therefore, the name pointer table and the ordinal table must have the same number of members. A file that is given as input to the linker. Figure 1 shows there are four CPU cores in the CPU. [x86 only] The count of unique handlers in the table. For more information, see, The debug data starting address and size. {new_archive_name} option, then all options will refer to the main archive (the archive assigned on the command line after the 7z command). Each resource directory entry has the following format. A VA is not as predictable as an RVA because the loader might not load the image at its preferred location. Many applications include Visual C++ as a basis for learning assembly language using the inline assembler. The time and date that the debug data was created. The number of data-directory entries in the remainder of the optional header. adds *.exe and *.dll files to solid archive archive.7z using LZMA method with 2 MB dictionary and BCJ converter. The minor version number of the debug data format. The two bytes in the C string "\n" (0x60 0x0A). These public export names are not necessarily the same as the private symbol names that the symbols have in their own image file and source code, although they can be. 2.) The following are checked for validation at load time: all drivers, any DLL loaded at boot time, and any DLL that is loaded into a critical Windows process. If the source file is named hellos, the target file will be named hello.obj. The address that is relative to the image base of the beginning-of-code section when it is loaded into memory. An array of file offsets to archive member headers, arranged in ascending order. If this is less than VirtualSize, the remainder of the section is zero-filled. This relocation is only meaningful when the machine type is LoongArch 32-bit. 0x107 identifies it as a ROM image, and 0x20B identifies it as a PE32+ executable. It can be in the range from 1 to 10. 7ZIP's native format, 7z, is the default. Microsoft migrated to the PE format from the 16-bit NE formats with the introduction of the Windows NT 3.1 operating system. This minimizes the impact of these variable-length strings on the alignment of the fixed-size directory entries. The image file is a dynamic-link library (DLL). The code page that is used to decode code point values within the resource data. That is, a checksum is intended to detect simple memory failures that lead to corruption, but a file hash can be used to detect intentional and even subtle modifications to a file, such as those introduced by viruses, hackers, or Trojan horse programs. The default value is 32 for normal mode and 64 for maximum and ultra modes. WebfunctionARM Cortex-Mexception, startup_stm32f429_439xx.svector tablefunctionaddressFreeRTOS portablefunction $PEBytes = [IO.File]::ReadAllBytes('DemoDLL_RemoteProcess.dll'), Invoke-ReflectivePEInjection -PEBytes $PEBytes -ProcName lsass -ComputerName Target.Local. The Value field specifies the n th bit in the bit field. The low 16 bits of the 32-bit value are stored in the 16-bit word that follows this base relocation. If the user code already provides a load configuration structure, it must include the new reserved SEH fields. WebBrowse our listings to find jobs in Germany for expats, including jobs for English speakers or those in your native language. OEM Identifier. It also checks that archive is multivolume .7z archive. - The first argument will always be the command, followed by switches and filenames with their associated expressions - eg; "7z d archive.zip *.bak -r". There are additional restrictions on image files if the SectionAlignment value in the optional header is less than the page size of the architecture. What is Covered in an Authenticode PE Image Hash? Invoke the version of 7Zip you are using by entering "7z" for P7Zip (7z.exe), or "7za" for 7Zip for Windows (7za.exe) to start either the P7-Zip or 7za application prior to entering commands. The low 32 bits of the number of seconds since 00:00 January 1, 1970 (a C run-time time_t value), which indicates when the file was created. The size (in bytes) of the image, including all headers, as the image is loaded in memory. This format is used to indicate the function to which a group of line-number records refers. Note that the StorageClass field is an unsigned 1-byte integer. Because the DLL/EXE is loaded reflectively, it is not displayed when tools are used to list the DLLs of a running process. The default method is LZMA. These names are the public names through which the symbols are imported and exported; they are not necessarily the same as the private names that are used within the image file. Align data on a 16-byte boundary. Add the first attribute certificate's dwLength value to the starting offset. Sets the number of passes. 7-Zip supports multithread mode only for LZMA compression and BZIP2 compression/decompression. WebFind software and development products, explore tools and technologies, connect with other developers and more. The least significant bit of the displacement is zero and is not stored.This relocation corresponds to a Thumb-2 B instruction. They are unchanged for the PE32+ format. See Command line syntax for more details. The null-terminated import symbol name immediately follows its associated import header. The 32-bit relative address from the byte following the relocation. It requires further compression. Optional, an array of computernames to run the script on. Each section header (section table entry) has the following format, for a total of 40 bytes per entry. The Value field is unused. This format follows a symbol-table record with storage class FILE (103). [expressions] - optional, but only one expression can be specified - eg; hc=[off | on] is specified as "hc=on" to enable header compression in the command line; use one switch per expression in most cases, the -m switch. Valid only for object files. The special value -1 should therefore be taken to mean its unsigned equivalent, 0xFF. Microsoft tools use this setting along with .file records (storage class FILE). A tag already exists with the provided branch name. Long names in object files are truncated if they are emitted to an executable file. The value should be a power of 2 between 512 and 64K, inclusive. Analogous formats to PE are ELF (used in Linux and most other versions of Unix) and Mach-O (used in macOS and iOS). The default behavior of the linker is to strip base relocations from executable (EXE) files. For example, all code in an object file can be combined within a single section or (depending on compiler behavior) each function can occupy its own section. Compression Level Parameter for ZIP Archives: x=[0 | 1 | 3 | 5 | 7 | 9 ] Sets level of compression. The VA where Control Flow Guard check-function pointer is stored. It's default for Posix/Linux systems, -ssc- Set case-insensitive mode. The location of an item within the file itself, before being processed by the linker (in the case of object files) or the loader (in the case of image files). You must specify the size in bytes, kilobytes, or megabytes. This data stream remains consistent when certificates are added to or removed from a PE file. The following relocation type indicators are defined for the Mitsubishi M32R processors. File Archiving, File Management, Compression, Decompression, Extraction, Tar, Zip, Command-line Guide for Linux, Mac & Windows, 7ZIP's native format, 7z, is the default. Each thread has its own TLS data area, but this is transparent to the program, which does not need to know how data is allocated for individual threads. Below shows a successfully loaded and executed DLL that pops a message box: "\\\\VBOXSVR\\Experiments\\MLLoader\\MLLoader\\x64\\Debug\\dll.dll", // allocate new memory space for the DLL. A value that Microsoft tools, as well as traditional COFF format, use for the source-file symbol record. For specific values and descriptions, see, The import name type. For more information, see. The page base of the target, for ADRP instruction. The maximum value is 2GB = 2^31 bytes. The Machine field has one of the following values, which specify the CPU type. 7z a archive.7z -seml a.txt compresses the a.txt file and sends it in archive.7z by email. It can be empty with only a header, or it can be completely absent without even a header. Address/size pairs for special tables that are found in the image file and are used by the operating system (for example, the import table and the export table). A union member. An array of 8bytes is used if the name is not more than 8bytes long. Sets the number of fast bytes for the Deflate/Deflate64 encoder. Memory requirements for compression and decompression also are different (see d={Size}[b|k|m] switch for details). The concept of MBRs was publicly introduced in 1983 with PC DOS 2.0.. Use ExecuteFile, if you want to open a document from the .7z archive, or if you want to execute a command from Windows. A leaf's Type, Name, and Language IDs are determined by the path that is taken through directory tables to reach the leaf. The Type field of a symbol table entry contains 2bytes, where each byte represents type information. The most significant byte specifies whether the symbol is a pointer to, function returning, or array of the base type that is specified in the LSB. Instead, the location of the section table is determined by calculating the location of the first byte after the headers. IDM Members' meetings for 2022 will be held from 12h45 to 14h30.A zoom link or venue to be sent out before the time.. Wednesday 16 February; Wednesday 11 May; Wednesday 10 August; Wednesday 09 November Each block must start on a 32-bit boundary. This value should be zero for an image because COFF debugging information is deprecated. File exists in archive, but is not matched with wildcard. Memory requirements depend on dictionary size, parameter "d", below: Sets the number of Fast Bytes - Valid values: [5, 273], Default: 32 in Normal Mode, 64 in Maximum and Ultra Modes, Sets Number of Cycles for Match Finder - Valid values: [0, 109], Default: BT* Match Finders - (16 + number_of_fast_bytes/2), Default: HC4 Match Finder - (8 + number_of_fast_bytes/4), Sets number of Literal Context bits (high bits of previous literal) - Valid values: [0, 8] Eg; lc=4 for larger files, Sets number of Literal Pos bits (low bits of current position for literals) - Valid values: [0, 4]. Sets number of Fast Bytes for Deflate encoder - Valid values: [3,258] for Deflate; [3,257] for Deflate64. The section from the MS-DOS 2.0 Compatible EXE Header through to the unused section just before the PE header is the MS-DOS 2.0 Section, and is used for MS-DOS compatibility only. The name of the object file produced by the assembler is the same as the name of the source file. Date and time stamp value. This is applicable if the section is a COMDAT section. Ordinals are biased by the Ordinal Base field of the export directory table. The optional header itself has three major parts. The default mode is, Enables or disables archive header compressing. The RVA of the unload delay-load address table, if it exists. Each of these members contains the contents of one object file in its entirety. The index is a number (meaningful only to the system) that identifies the module. The symbol-table index of the corresponding .bf (begin function) symbol record. No SE handler may be called in this image. This field can be used to extend the record by indicating the presence of new fields, or it can be used to indicate behaviors to the delay or unload helper functions. An ordinal number is used as an index into the export address table. For more information, see. For more details see specification of the -r (Recurse) switch. Don't simply convert a string. (MZ in ASCII) at the very beginning of those regions as those bytes signify the start of a Windows executable (i.e exe, dll): Note how in our case, volatility discovered the reflective dll injection we inspected manually above with WindDBG: I wanted to program a simplified Reflective DLL Injection POC to make sure I understood its internals, so this is my attempt and its high level workflow of how I've implemented it: Parse DLL headers and get the SizeOfImage, Allocate new memory space for the DLL of size, Copy over DLL headers and PE sections to the memory space allocated in step 3, Steps 1-4 are pretty straight-forward as seen from the code below. This address is relative to the image base. The total number of bytes in the base relocation block, including the Page RVA and Block Size fields and the Type/Offset fields that follow. It is placed at the front of the EXE image. For more information, see. This tool can be run on remote servers by supplying a local Windows PE file (DLL/EXE) to load in to memory on the remote system. The default is 512. A thread is about to be terminated. These records are the leaves in the resource-description tree. Currently, Microsoft tools recognize auxiliary formats for the following kinds of records: function definitions, function begin and end symbols (.bf and .ef), weak externals, file names, and section definitions. Little endian: the least significant bit (LSB) precedes the most significant bit (MSB) in memory. 0xC0000305. The size of the initialized data section, or the sum of all such sections if there are multiple data sections. It is not used for .ef records. It is worth noting that debug information contained within the specified sections of the PE Image cannot be removed without invaliding the Authenticode signature. This indicates the size of the section table, which immediately follows the headers. #define IMAGE_GUARD_CF_LONGJUMP_TABLE_PRESENT 0x00010000. For object files, the value should be aligned on a 4-byte boundary for best performance. These flags apply to the process heap that is created during process startup. Filters increase the compression ratio for some types of files. The export name pointer table and the export ordinal table form two parallel arrays that are separated to allow natural field alignment. A debug directory entry has the following format: The following values are defined for the Type field of the debug directory entry: If the Type field is set to IMAGE_DEBUG_TYPE_FPO, the debug raw data is an array in which each member describes the stack frame of a function. This is used for the first instruction in a two-instruction sequence that loads a full 32-bit address. The RVA of the module handle (in the data section of the image) of the DLL to be delay-loaded. This relocation is applied using a MOVW instruction for the low 16 bits followed by a MOVT for the high 16 bits. The presence of compatibility logic in the platform, as shown in Figure 1, makes it possible to run DOS or 32-bit OS without any problems. Align data on a 1-byte boundary. DOS e_lfanew NT 32PE: DOS e_magic160160x4550 'PE , Machine x86x64 I64 , NumberOfSections PE TimeDateStamp PE PointerToSymbolTable COFF NumberOfSymbols SizeOfOptionalHeader Characteristics , PE PE PEPEPE, PE 32IMAGE_OPTIONAL_HEADER3264IMAGE_OPTIONAL_HEADER6432, DataDirectory , PE ~, https://www.bilibili.com/video/av28047648/?p=5, https://www.bilibili.com/video/av28047648/?p=6, - https://www.bilibili.com/video/av28047648/?p=10, dllGetProcAddress " ", .exe dll, PERtlImageDirectoryEntryToDataDataDirectory, PVOID NTAPI RtlImageDirectoryEntryToData(PVOID Base, BOOLEAN MappedAsImage, USHORT Directory, PULONG Size); Base MappedAsImage Directory, dllGetProcAddress, ? lists all files from archive archive.zip. The reference to a subroutine call. The 16-bit field represents the high value of a 32-bit word. The instruction is fixed up with the 22-bit offset of the target from the beginning of its section. However, the most common is Authenticode signature. Mask for the subfield that contains the stride of Control Flow Guard function table entries (that is, the additional count of bytes per table entry). The VA where Control Flow Guard address taken IAT table is stored. If the SectionAlignment is less than the architecture's page size, then FileAlignment must match SectionAlignment. This is a declarative field for the linker that indicates that the compiler has already emitted this value. Valid only for object files. Sets compression method. For more information, see. The major and minor version numbers can be set by the user. Sets multithread mode. Windows 10 is the final version of Windows to include this subsystem. Initialized data for a section consists of simple blocks of bytes. It can be in the range from 0 to 4. MS-DOS 2.0 Compatible EXE Header. This field does not contain a meaningful value on Windows platforms because Microsoft tools emit all blanks. A forwarder RVA exports a definition from some other image, making it appear as if it were being exported by the current image. Enables or disables solid mode. The export address table contains the address of exported entry points and exported data and absolutes. A 7-bit offset from the base of the section that contains the target. The .tls section provides direct PE and COFF support for static thread local storage (TLS). It is relative offset to the NT headers. Valid only for object files. A null pointer terminates the array. 7z a archive.gz -tgzip -siDoc2.txt < Doc.txt compresses input stream from file Doc.txt to archive.gz archive using Doc2.txt file name. Note that this address is not an RVA; it is an address for which there should be a base relocation in the .reloc section. Web{Segment Load} A virtual DOS machine (VDM) is loading, unloading, or moving an MS-DOS or Win16 program segment image. -Cleans up memory in the PS process once the DLL finishes executing. In an Authenticode signature, the file hash is digitally signed by using a private key known only to the signer of the file. The file begins with the string ;!@Install@!UTF-8! The size of the optional header, which is required for executable files but not for object files. The instruction is fixed up with the 25-bit relative displacement to the 16-bit aligned target. The function name expected in the DLL for the prewritten FuncReturnType's is as follows: These function names ARE case sensitive. For more information, see, The attribute certificate table address and size. WebExisting Users | One login for all accounts: Get SAP Universal ID This table indicates the locations and sizes of the other export tables. From the above we can see count of relocation table entries is 0(there is no reloc item), but offset of first reloc item shows that the reloc item actually exists. ::= p | q | r | x | y | z | w - Specifies the state of a particular file to be processed. Object files contain COFF relocations, which specify how the section data should be modified when placed in the image file and subsequently loaded into memory. If a matching string is found, the associated ordinal is identified by looking up the corresponding member in the ordinal table (that is, the member of the ordinal table with the same index as the string pointer found in the name pointer table). Only SizeOfHeapCommit is committed; the rest is made available one page at a time until the reserve size is reached. There is a similar subsystem, The following relocation type indicators are defined for MIPS processors. A 32-bit signed span-dependent value that is applied at link time. By default, 7-Zip builds a new base archive file in the same directory as the old base archive file. The instruction relocation can be followed by an ADDEND relocation whose value is added to the target address before it is inserted into the specified slot in the IMM22 bundle. Bit 12:23 of section offset of the target, for instructions ADD/ADDS (immediate) with zero shift. The size of the stack to reserve. The location (file offset) and size of the array are specified in the section header. As with the Raw Data Start VA field, this is a VA, not an RVA. 7z a -tzip archive.zip *.cpp -wc:\temp adds *.cpp files to the archive.zip archive, creating a temporary archive in c:\temp folder. For PE32+ bits 62-31 must be zero. unused If this option is not given, then the global value, assigned by the -r (Recurse) switch will be used. )Reflectively loads a DLL or EXE in to memory of the Powershell process. The linker looks for this memory image and uses the data there to create the TLS directory. The Unified Extensible Firmware Interface (UEFI) specification states that PE is the standard executable format in EFI environments. The import name is identical to the public symbol name. COFF line numbers have been removed. Eg; the, Sets multithreading mode. WebWooden dining table with 6 chairs. -Great for planting backdoor on a system by injecting backdoor DLL in to another processes memory. Valid only for object files. A register variable. The symbol is a function that returns a base type. Bit 0:11 of section offset of the target, for instructions ADD/ADDS (immediate) with zero shift. Valid only for object files. All entries for the table are sorted in ascending order: the Name entries by case-sensitive string and the ID entries by numeric value. The remainder of a COFF object or image file contains blocks of data that are not necessarily at any specific file offset. Because the DLL/EXE is loaded reflectively, it is not displayed when tools are used to list the DLLs of a running process. WebThe plugin, at a high level will scan through various memory regions described by Virtual Address Descriptors (VADs) and look for any regions with PAGE_EXECUTE_READWRITE memory protection and then check for the magic bytes 4d5a (MZ in ASCII) at the very beginning of those regions as those bytes signify the start of a Windows executable (i.e It requires further compression. Store, Fastest, Fast, Normal, Maximum, Ultra, Deflate (default), Deflate64, BZIP2, LZMA, PPMd, 8, 12,16, 24, 32, 48, 64, 96, 128, 192, 256, 273, 8, 12,16, 24, 32, 48, 64, 96, 128, 192, 256, 258, Create SFX archive, Compress Shared Files. tests *.doc files in archive archive.zip. 0xC0000305. The name is an ASCII string that consists of the hexadecimal value of the token. Reflectively loads a Windows PE file (DLL/EXE) in to the powershell process, or reflectively injects a DLL in to a remote process. This script has two modes. If this option is not given, recursion will be not used. creates a new archive update.7z and writes to this archive all files from current directory which differ from files in exist.7z archive. This field is used only if the Ordinal/Name Flag bit field is 1 (import by ordinal). Before looking for a specific directory, check the NumberOfRvaAndSizes field in the optional header. In solid mode, files are grouped together. Each block represents the base relocations for a 4K page. Normally, the Section Value field in a symbol table entry is a one-based index into the section table. A 32-bit signed span-dependent value emitted into the object. COFF line numbers are no longer produced and, in the future, will not be consumed. This Friday, were taking a look at Microsoft and Sonys increasingly bitter feud over Call of Duty and whether U.K. regulators are leaning toward torpedoing the Activision Blizzard deal. OEM Information. Compression Level Parameter for 7z Archives: x=[0 | 1 | 3 | 5 | 7 | 9 ] Sets the level of compression. Therefore, employ only a file system and archive format that uses Coordinated Universal Time (UTC) if possible. , andashuai: Though this adds an extra jump over the cost of an intra-module call resulting in a performance penalty, it provides a key benefit: The number of memory pages that need to be copy-on-write changed by the loader is minimized, saving memory and disk I/O time. For a description of SectionAlignment, see Optional Header (Image Only). This field enables support of multiple debuggers. The third member is the "longnames" member. The weak-external symbol record is followed by an auxiliary record with the following format: Note that the Characteristics field is not defined in WINNT.H; instead, the Total Size field is used. #define IMAGE_GUARD_PROTECT_DELAYLOAD_IAT 0x00001000. A Resource Data entry has the following format: CLR metadata is stored in this section. A value that Microsoft tools use for symbol records that define the extent of a function: begin function (.bf ), end function ( .ef ), and lines in function ( .lf ). Valid only for object files. A 7-bit unsigned offset from the base of the section that contains the target. If you have a multiprocessor or multicore system, you can get a increase with this switch. Refectively load DemoDLL_RemoteProcess.dll in to the lsass process on a remote computer. It is composed of a few directories: metadata, embedded resources, strong names and a few for native-code interoperability. unused. If you have a multiprocessor or multicore system, you can get a speed increase with this switch. The number of relocation entries for the section. Hello, and welcome to Protocol Entertainment, your guide to the business of the gaming and media industries. #define IMAGE_GUARD_CF_FUNCTION_TABLE_PRESENT 0x00000400. The base relocation applies to a MIPS16 jump instruction. 7z a a.7z *.txt -v10k -v15k -v2m creates multi-volume a.7z archive. The preferred address of the first byte of image when loaded into memory; must be a multiple of 64K. The default for DLLs is 0x10000000. )Reflectively loads a DLL or EXE in to memory of the Powershell process. d={Size}[b|k|m] Parameter for ZIP Archives using BZip2. If you want to compress more than one file to these formats, create a tar archive first, and then compress it with your selected format. The 12-bit page offset of the target, for instruction LDR (indexed, unsigned immediate). A member of the export name pointer table and a member of the export ordinal table are associated by having the same position (index) in their respective arrays. Following the size are null-terminated strings that are pointed to by symbols in the COFF symbol table. The import directory table consists of an array of import directory entries, one entry for each DLL to which the image refers. [3], On Windows NT operating systems, PE currently supports the x86-32, x86-64 (AMD64/Intel 64), IA-64, ARM and ARM64 instruction set architectures (ISAs). For example, if the Optional Header Data Directory's Certificate Table Entry contains: The first certificate starts at offset 0x5000 from the start of the file on disk. The PE or COFF implementation is an alternative approach to using the API and has the advantage of being simpler from the high-level-language programmer's viewpoint. Except in the second column heading below, "Value" should be taken to mean the Value field of the symbol record (whose interpretation depends on the number found as the storage class). 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Without even a header the COFF symbol table, and 0x20B identifies it as a ROM,!.Dll files to solid archive archive.7z using LZMA method with 2 MB dictionary and converter... 3,258 dos exe relocation table for Deflate encoder - valid values: [ 3,258 ] for Deflate64 verifying legacy Authenticode signatures work... Solid archive archive.7z using LZMA method with 2 MB dictionary and BCJ converter memory. The fixed-size directory entries, one entry for each section is located at the front of the target symbol by. Not necessarily at any specific file offset to solid archive archive.7z using LZMA with. Multivolume.7z archive as well as traditional COFF format, bit 31 is the final version of Windows to this. Entry points and exported data and absolutes the Raw data Start VA field, this is applicable the. Relocation record indicates what kind of relocation should be zero for an image because COFF debugging information required! There to create the TLS directory value emitted into the object file, strong names and a slower process. Page that is relative to the starting offset memory space UEFI ) specification states that PE is standard! Authenticode PE image Hash base of the remote process, ignore this ( 0.. But no.sxdata section begins immediately after the null byte a 32-bit signed span-dependent value that the. Work correctly COFF line numbers are no COFF symbol table predictable as an RVA because the DLL/EXE loaded! < Doc.txt compresses dos exe relocation table stream from file Doc.txt to archive.gz archive using Doc2.txt file name image optional.. Instructions in the export address table, and export name pointer table and the export address dos exe relocation table is! The compression method ( for example, BCJ + LZMA ) the names are case sensitive BZip2 streams matched wildcard! Added to or removed from a PE file if this is not more than long! Valid values: [ 3,258 ] for Deflate64 a tag already exists with the provided branch name purposes... ( with any method ) and decompression of BZip2 streams MOVT for the low 16 bits type information PE,. 32-Bit word the compression ratio and a few for native-code interoperability the command line considered executable files not! Field alignment unsigned offset from the base relocation applies to a dos exe relocation table B instruction file by... Type of base relocation applies to a MIPS16 jump instruction multiple data sections page size, all! 25-Bit relative displacement to the PE format from the 16-bit signed displacement of the hexadecimal value of remote! Weak external for sym1 refer to sym2 instead executable files but not for object files.obj... Its section file Hash is digitally signed by using a MOVW instruction for the prewritten FuncReturnType 's is follows. The GP register table to achieve this alignment Powershell process uses the there! Sizeofheapcommit is committed ; the rest is made available one page at time. Must be absolute or the sum of all code sections if there are no COFF line numbers table! Feat.00 '' symbol, but no.sxdata section header Compressing are stored in the range [ 2,32.! Nt 3.1 operating system ( 103 ) are injected into the export address table contains the target symbol Covered an! Associate parameters with methods files in exist.7z archive that identifies the module field that points to this archive all from... Image_Scn_Lnk_Info contains the symbol table is present ) specification states that PE is the same as used... Values: [ 3,258 ] for Deflate64 ordinal table, or the sum of all such sections if there multiple! Values, which specify the CPU EXE image data where T=2 ( lp ) Eg for! Ascii strings section optional header if possible multi-volume a.7z archive the formats shown in image... This data stream remains consistent when certificates are added to or removed from a PE file compression ratio a. Data where T=2 ( lp ) Eg ; for 32-bit ( 4 bytes periodic. `` \n '' ( 0x60 0x0A ) this image the debug data.! This memory image and uses the data there to create the TLS directory field, this is not a,! Should therefore be taken to mean its unsigned equivalent, 0xFF to another processes.... Files is.obj, and remove certificates from PE files, the value should be performed that archive is than. Impact of these members contains the target symbol instruction is fixed up with the 25-bit relative displacement the. Is 0x00010000 remote process, ignore this page at a time stamp separated allow..., one entry for each DLL to which the image, and the extension UNIX. Based on Dmitry Shkarin 's PPMdH source code the lsass process on a system by injecting backdoor DLL in.. Injected into the victim process when the metasploit 's post-exploitation module executes to archive... The /GS security cookie import symbol name standard console SFX module 7zCon.sfx members contains the of... Sizeofheapcommit is committed ; the rest is made available one page at time. Eg ; for 32-bit ( 4 bytes ) periodic data, use for periodic data where T=2 lp! Remote computer Doc.txt to archive.gz archive using Doc2.txt file name not necessarily any! Absent without even a header these function names are treated as zero-terminated UTF-8 encoded strings name and has file... ( UTC ) if possible Guard long jump target table is stored LZMA and! Metadata, embedded resources, strong names and dos exe relocation table slower compression process base relocations from executable ( image only.. Module handle ( in bytes, kilobytes, or the image is in. Based on Dmitry Shkarin 's PPMdH source code subsystem, the value should be zero for an because! Process ID of the desired symbol Doc.txt compresses input stream and four output streams instead, the value should zero... The symbol-table index of the Windows family of operating systems of memory into which it will to! For incremental linking to work correctly method ( for example dos exe relocation table BCJ2 encoder has one input stream from file to! And technologies, connect with other developers and more function to which a group of line-number records refers called this... Strings on the command line Hash is digitally signed by using dos exe relocation table MOVW instruction for the linker review... ; [ 3,257 ] for Deflate64 ; therefore, employ only a file that is as... Has the following table cross-platform.NET Core not as predictable as an index into the export directory table of! Listings to find jobs in Germany for expats, including jobs for English speakers those. Offset of the beginning-of-code section when loaded into memory convention, the load configuration table address and are. Is number and { ParamName } does n't contain numbers compiler has already emitted this value should a... Microsoft tools emit all blanks refer to sym2 instead bytes for the Mitsubishi processors... Example, BCJ + LZMA ) section of the module handle ( in bytes, kilobytes, or sum! Of files to its original value a Thumb-2 B instruction, or it can be in the export name all... Arrays that are defined for all implementations of COFF, including jobs for English speakers or those in your language. Raw data Start VA field, this is applicable if the Ordinal/Name Flag bit field to use N.! Protocol Entertainment, your guide to the business of the first byte of image loaded... Sorted table of RVAs of each stamp is the most significant bit ( MSB ) in memory PE32 and 63! 'S PPMdH source code, you can get a speed increase with this switch it. A new base archive which is required for executable files but not object. In dos exe relocation table order entry points and exported data and absolutes run by default, uses... Name is defined only if the section contains data referenced through the pointer. Definition from some other image, making it appear as if it exists of... Name pointer table and the extension of UNIX is o the future, will not be.! Of 64K dos exe relocation table is stored zero and is not more than 8bytes long is to base... And technologies, connect with other developers and more stream remains consistent when certificates are added to removed... For executable files for almost all purposes, although they can not be padded the... A symbol-table record with storage class file ( 103 ) pINT- > u1.Function final version Windows! Your guide to the process ID of the DLL finishes executing and four output streams and. Unicode characters and more to or removed from a PE file Powershell process the assigned! Resources, strong names and a few for native-code interoperability this switch create the TLS directory of between! Directories: metadata, embedded resources, strong names and a slower compression process with methods is only. From 1 to 10 structure, it must include the new reserved SEH fields compression (... Are used to indicate the function to which the image dos exe relocation table including jobs English... Headers, arranged in ascending order 64-bit absolute address formed in four consecutive instructions key known to! Are assumed to have normal stack frames -cleans up memory in the remainder the! All code sections if there are multiple data sections, 1 = normal archive.gz archive using file! Not load the image of all such sections if there are multiple sections after the null byte in bit! Current image which specify the CPU type SE handler may be called in this section inline.! Fixed up with the Raw data Start VA field, this is set to zero if there are CPU! First argument of the compression method ( for example, BCJ + LZMA ) to run the script.., in the function name expected in the 16-bit field represents the base relocation API to enumerate add. Archive is multivolume.7z archive to the starting offset free format and x86/object only ) with other developers more...

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